{"repo": "achuan-2/slidesci", "files": {"SlideSCI/components/AISidebarControl.cs": {"fdab6a504df7eee331d5c0676e6b1f60091db177": {"t": 1785746184.6312273, "n": 59906, "h": "9e04dab5d8dcad98", "c": "using System;\nusing System.Collections.Generic;\nusing System.Drawing;\nusing System.Drawing.Drawing2D;\nusing System.IO;\nusing System.Net.Http;\nusing System.Text;\nusing System.Text.RegularExpressions;\nusing System.Threading;\nusing System.Threading.Tasks;\nusing System.Windows.Forms;\nusing Newtonsoft.Json;\nusing PowerPoint = Microsoft.Office.Interop.PowerPoint;\n\nnamespace SlideSCI\n{\n    public class AISidebarControl : UserControl\n    {\n        private FlowLayoutPanel chatFlowLayout;\n        \n        private Panel inputPanel;\n        private TextBox txtInput;\n        private Button btnSend;\n        private Button btnClear;\n        private Button btnSettings;\n        private ToolTip toolTip;\n\n        private string configPath;\n        private AIConfig currentConfig;\n        private List<ChatMessage> conversationHistory = new List<ChatMessage>();\n        private static readonly HttpClient httpClient = new HttpClient();\n        private bool isGenerating = false;\n        private CancellationTokenSource cts;\n\n        public PowerPoint.DocumentWindow AssociatedWindow { get; set; }\n\n        public AISidebarControl()\n        {\n            // Enable TLS 1.2 and TLS 1.3 for secure API calls\n            try\n            {\n                System.Net.ServicePointManager.SecurityProtocol |= \n                    System.Net.SecurityProtocolType.Tls12 | \n                    System.Net.SecurityProtocolType.Tls11 |\n                    (System.Net.SecurityProtocolType)12288; // TLS 1.3\n            }\n            catch { }\n\n            InitializeConfigPath();\n            LoadConfig();\n            InitializeComponent();\n            InitializeSystemMessage();\n        }\n\n        private void InitializeConfigPath()\n        {\n            string appData = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);\n            string slideSciDir = Path.Combine(appData, \"SlideSCI\");\n            if (!Directory.Exists(slideSciDir))\n            {\n                Directory.CreateDirectory(slideSciDir);\n            }\n            configPath = Path.Combine(slideSciDir, \"ai_config.json\");\n        }\n\n        private void LoadConfig()\n        {\n            if (File.Exists(configPath))\n            {\n                try\n                {\n                    string json = File.ReadAllText(configPath);\n                    currentConfig = JsonConvert.DeserializeObject<AIConfig>(json);\n\n                    // Migration: If no presets exist but we have old single-config fields, create a default preset\n                    if (currentConfig != null && (currentConfig.Presets == null || currentConfig.Presets.Count == 0))\n                    {\n                        var dict = JsonConvert.DeserializeObject<Dictionary<string, object>>(json);\n                        string oldUrl = dict.ContainsKey(\"ApiUrl\") ? dict[\"ApiUrl\"]?.ToString() : null;\n                        string oldKey = dict.ContainsKey(\"ApiKey\") ? dict[\"ApiKey\"]?.ToString() : null;\n                        string oldModel = dict.ContainsKey(\"Model\") ? dict[\"Model\"]?.ToString() : null;\n                        string oldPrompt = dict.ContainsKey(\"SystemPrompt\") ? dict[\"SystemPrompt\"]?.ToString() : null;\n\n                        currentConfig.Presets = new List<AIPreset>();\n                        if (!string.IsNullOrEmpty(oldUrl) || !string.IsNullOrEmpty(oldKey))\n                        {\n                            currentConfig.Presets.Add(new AIPreset\n                            {\n                                Name = \"Default\",\n                                ApiUrl = oldUrl ?? \"https://api.openai.com/v1\",\n                                ApiKey = oldKey ?? \"\",\n                                Model = oldModel ?? \"gpt-4o\",\n                                SystemPrompt = oldPrompt ?? GetDefaultSystemPrompt()\n                            });\n                            currentConfig.CurrentPresetName = \"Default\";\n                        }\n                    }\n                }\n                catch\n                {\n                    currentConfig = new AIConfig();\n                }\n            }\n            else\n            {\n                currentConfig = new AIConfig();\n            }\n\n            if (currentConfig == null) currentConfig = new AIConfig();\n\n            // Ensure we have some default presets if list is still empty\n            if (currentConfig.Presets == null || currentConfig.Presets.Count == 0)\n            {\n                currentConfig.Presets = new List<AIPreset>\n                {\n                    new AIPreset { Name = \"Kimi\", ApiUrl = \"https://api.moonshot.cn/v1\", Model = \"kimi-latest\", SystemPrompt = GetDefaultSystemPrompt() },\n                    new AIPreset { Name = \"DeepSeek\", ApiUrl = \"https://api.deepseek.com/v1\", Model = \"deepseek-chat\", SystemPrompt = GetDefaultSystemPrompt() },\n                    new AIPreset { Name = \"OpenAI\", ApiUrl = \"https://api.openai.com/v1\", Model = \"gpt-4o\", SystemPrompt = GetDefaultSystemPrompt() }\n                };\n                currentConfig.CurrentPresetName = \"Kimi\";\n                SaveConfig();\n            }\n\n            if (string.IsNullOrWhiteSpace(currentConfig.SystemPrompt) ||\n                currentConfig.SystemPrompt.Contains(\"Office.MsoShapeType.msoShapeRectangle\") ||\n                currentConfig.SystemPrompt.Contains(\"msoShapeRoundRectangle\"))\n            {\n                currentConfig.SystemPrompt = GetDefaultSystemPrompt();\n                SaveConfig();\n            }\n        }\n\n        private void SaveConfig()\n        {\n            try\n            {\n                string json = JsonConvert.SerializeObject(currentConfig, Formatting.Indented);\n                File.WriteAllText(configPath, json);\n            }\n            catch (Exception ex)\n            {\n                MessageBox.Show($\"保存设置失败: {ex.Message}\", \"错误\", MessageBoxButtons.OK, MessageBoxIcon.Error);\n            }\n        }\n\n        private void InitializeComponent()\n        {\n            this.Dock = DockStyle.Fill;\n            this.BackColor = Color.FromArgb(245, 246, 247);\n            this.Font = new Font(\"Microsoft YaHei\", 9F, FontStyle.Regular, GraphicsUnit.Point);\n\n            toolTip = new ToolTip();\n\n            // 1. Input Panel (Docked at Bottom)\n            inputPanel = new Panel\n            {\n                Dock = DockStyle.Bottom,\n                Height = 105,\n                BackColor = Color.White,\n                Padding = new Padding(10, 8, 10, 8)\n            };\n            inputPanel.Paint += (s, e) =>\n            {\n                using (Pen pen = new Pen(Color.FromArgb(225, 225, 225), 1))\n                {\n                    e.Graphics.DrawLine(pen, 0, 0, inputPanel.Width, 0);\n                }\n            };\n\n            // Custom border panel for textbox\n            Panel txtWrapper = new Panel\n            {\n                Location = new Point(10, 8),\n                Width = this.Width - 20,\n                Height = 52,\n                BackColor = Color.White,\n                Padding = new Padding(4)\n            };\n            txtWrapper.Paint += (s, e) =>\n            {\n                Color borderColor = txtInput.Focused ? Color.FromArgb(0, 120, 212) : Color.FromArgb(220, 220, 220);\n                using (Pen pen = new Pen(borderColor, 1))\n                {\n                    e.Graphics.DrawRectangle(pen, 0, 0, txtWrapper.Width - 1, txtWrapper.Height - 1);\n                }\n            };\n\n            txtInput = new TextBox\n            {\n                Multiline = true,\n                BorderStyle = BorderStyle.None,\n                Dock = DockStyle.Fill,\n                Font = new Font(\"Microsoft YaHei\", 9F),\n                ScrollBars = ScrollBars.Vertical\n            };\n            txtInput.GotFocus += (s, e) => txtWrapper.Invalidate();\n            txtInput.LostFocus += (s, e) => txtWrapper.Invalidate();\n            txtInput.KeyDown += TxtInput_KeyDown;\n            txtWrapper.Controls.Add(txtInput);\n            inputPanel.Controls.Add(txtWrapper);\n\n            // Icon-only Clear button\n            btnClear = new Button\n            {\n                Image = CreateIcon(\"trash\", 16, Color.FromArgb(100, 100, 100)),\n                FlatStyle = FlatStyle.Flat,\n                BackColor = Color.Transparent,\n                Location = new Point(10, 68),\n                Width = 28,\n                Height = 26,\n                Cursor = Cursors.Hand\n            };\n            btnClear.FlatAppearance.BorderSize = 0;\n            btnClear.FlatAppearance.MouseOverBackColor = Color.FromArgb(240, 240, 240);\n            btnClear.Click += (s, e) => ClearChat();\n            toolTip.SetToolTip(btnClear, \"清空对话\");\n            inputPanel.Controls.Add(btnClear);\n\n            // Icon-only Settings button\n            btnSettings = new Button\n            {\n                Image = CreateIcon(\"settings\", 16, Color.FromArgb(100, 100, 100)),\n                FlatStyle = FlatStyle.Flat,\n                BackColor = Color.Transparent,\n                Location = new Point(44, 68),\n                Width = 28,\n                Height = 26,\n                Cursor = Cursors.Hand\n            };\n            btnSettings.FlatAppearance.BorderSize = 0;\n            btnSettings.FlatAppearance.MouseOverBackColor = Color.FromArgb(240, 240, 240);\n            btnSettings.Click += BtnSettings_Click;\n            toolTip.SetToolTip(btnSettings, \"AI 设置\");\n            inputPanel.Controls.Add(btnSettings);\n\n            btnSend = new Button\n            {\n                Text = \"发送\",\n                FlatStyle = FlatStyle.Flat,\n                BackColor = Color.FromArgb(0, 120, 212),\n                ForeColor = Color.White,\n                Font = new Font(\"Microsoft YaHei\", 9F, FontStyle.Bold),\n                Location = new Point(this.Width - 75, 68),\n                Width = 65,\n                Height = 26,\n                Cursor = Cursors.Hand\n            };\n            btnSend.FlatAppearance.BorderSize = 0;\n            btnSend.Click += async (s, e) => await HandleSendAsync();\n            inputPanel.Controls.Add(btnSend);\n\n            this.Controls.Add(inputPanel);\n\n            // 2. Chat Flow Layout Panel (Docked Fill)\n            chatFlowLayout = new FlowLayoutPanel\n            {\n                Dock = DockStyle.Fill,\n                AutoScroll = true,\n                FlowDirection = FlowDirection.LeftToRight,\n                WrapContents = true,\n                Padding = new Padding(8),\n                BackColor = Color.FromArgb(245, 246, 247)\n            };\n            typeof(FlowLayoutPanel).InvokeMember(\"DoubleBuffered\",\n                System.Reflection.BindingFlags.SetProperty | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic,\n                null, chatFlowLayout, new object[] { true });\n\n            this.Controls.Add(chatFlowLayout);\n\n            // Ensure Z-order prevents bottom layout overlapping\n            chatFlowLayout.BringToFront();\n\n            this.Resize += AISidebarControl_Resize;\n            chatFlowLayout.Resize += (s, e) => UpdateBubbleWidths();\n        }\n\n        private void AISidebarControl_Resize(object sender, EventArgs e)\n        {\n            if (inputPanel != null)\n            {\n                foreach (Control ctrl in inputPanel.Controls)\n                {\n                    if (ctrl is Panel p) // txtWrapper\n                    {\n                        p.Width = inputPanel.Width - 20;\n                    }\n                    else if (ctrl == btnSend)\n                    {\n                        btnSend.Left = inputPanel.Width - 75;\n                    }\n                }\n            }\n            UpdateBubbleWidths();\n        }\n\n        private void BtnSettings_Click(object sender, EventArgs e)\n        {\n            using (var settingsForm = new AISettingsForm(currentConfig))\n            {\n                if (settingsForm.ShowDialog(this) == DialogResult.OK)\n                {\n                    settingsForm.UpdateConfig(currentConfig);\n                    SaveConfig();\n\n                    // Update the active system message in the conversation history\n                    if (conversationHistory.Count > 0 && conversationHistory[0].Role == \"system\")\n                    {\n                        conversationHistory[0].Content = currentConfig.SystemPrompt;\n                    }\n                }\n            }\n        }\n\n        private void InitializeSystemMessage()\n        {\n            string systemPrompt = currentConfig.SystemPrompt;\n            if (string.IsNullOrWhiteSpace(systemPrompt))\n            {\n                systemPrompt = GetDefaultSystemPrompt();\n                currentConfig.SystemPrompt = systemPrompt;\n            }\n\n            conversationHistory.Add(new ChatMessage { Role = \"system\", Content = systemPrompt });\n            AppendBubble(\"你好！我是你的 SlideSCI AI 助手。我可以执行以下命令：\\n1. 把选中的文字或文本框颜色改为红色、蓝色等。\\n2. 添加各种形状（矩形、圆形等）。\\n3. 新增一页空白幻灯片。\\n4. 将幻灯片中的指定文字进行查找替换。\\n\\n请在下方输入你的指令！\", isUser: false, isSystem: false);\n        }\n\n        public static string GetDefaultSystemPrompt()\n        {\n            return @\"你是一个PowerPoint AI助手，你可以通过编写和执行C#代码来帮用户操作当前幻灯片。\n你有调用 `execute_csharp_code` 工具的能力。\n当你需要对幻灯片进行操作时（如修改文字颜色、添加形状、新建页面、替换文字等），你应该写C#代码，然后通过调用 `execute_csharp_code` 来执行。\n\n编写C#代码时请遵守以下规则：\n1. 代码会在一个包含 `PowerPoint.Application Application` 参数的方法体内执行：`public static void Run(PowerPoint.Application Application)`。\n2. 已经默认导入了以下命名空间，请勿再在代码中写 using 声明：\n   - System\n   - System.Collections.Generic\n   - System.Linq\n   - System.Drawing\n   - System.Windows.Forms\n   - Microsoft.Office.Interop.PowerPoint (别名为 PowerPoint)\n   - Microsoft.Office.Core (别名为 Office)\n3. 安全获取当前幻灯片对象 (Slide) 的方法：\n   PowerPoint.Slide slide = null;\n   try { slide = Application.ActiveWindow.View.Slide as PowerPoint.Slide; } catch {}\n   if (slide == null) {\n       try { slide = Application.ActivePresentation.Slides[Application.ActiveWindow.Selection.SlideRange[1].SlideIndex]; } catch {}\n   }\n   if (slide == null) {\n       throw new Exception(\"\"没有找到活动的幻灯片，请确保PPT处于正常视图。\"\");\n   }\n4. 新增幻灯片页面请直接对 Application.ActivePresentation.Slides 进行 Add 或 Add2 操作，例如：\n   var pres = Application.ActivePresentation;\n   pres.Slides.Add(pres.Slides.Count + 1, PowerPoint.PpSlideLayout.ppLayoutBlank);\n5. 操作文字颜色时，请使用 `System.Drawing.ColorTranslator.ToOle(Color.Red)` 将颜色转换为 OLE 颜色。例如：\n   shape.TextFrame.TextRange.Font.Color.RGB = ColorTranslator.ToOle(Color.Red);\n6. 插入形状时，第一个参数必须是 `Office.MsoAutoShapeType` 枚举类型（注意：千万不可写错成 `Office.MsoShapeType`，否则会报编译错误）。常用的形状枚举如下：\n   - 矩形：`Office.MsoAutoShapeType.msoShapeRectangle`\n   - 圆角矩形（注意是 Rounded，不是 Round）：`Office.MsoAutoShapeType.msoShapeRoundedRectangle`\n   - 椭圆/圆形：`Office.MsoAutoShapeType.msoShapeOval`\n   示例：`slide.Shapes.AddShape(Office.MsoAutoShapeType.msoShapeRectangle, left, top, width, height)`。位置与尺寸参数皆为 float 类型。\n7. 修改文字内容时，如果需要查找并替换，可以遍历幻灯片中的 Shape 并检查 `shape.HasTextFrame == Office.MsoTriState.msoTrue && shape.TextFrame.HasText == Office.MsoTriState.msoTrue`。\n8. 请尽量编写健壮的代码，用 try-catch 包裹可能出错的地方，遇到不支持的操作时抛出异常。\n\n【核心PPT设计审美与排版规范（PPT Aesthetics & Layout Design Rules）】\n为了确保AI添加的PPT样式美观、专业且符合现代高端设计规范，请在编写代码生成/修改PPT内容时，严格遵守以下排版与审美原则：\n\n1. 配色系统与 60-30-10 黄金比例：\n   - 禁止在没有用户明确要求的情况下使用刺眼的高饱和度纯原色（例如纯红 Color.Red、纯蓝 Color.Blue、纯绿 Color.Green、纯黄 Color.Yellow）。这会让 PPT 显得极不专业。\n   - 使用成熟、高对比度且优雅的经典主题配色（使用 Color.FromArgb 定义颜色，然后使用 ColorTranslator.ToOle 转换）：\n     * 极简科技蓝主题：\n       - 主背景/主色：浅灰白 Color.FromArgb(248, 249, 250) 或 极深蓝 Color.FromArgb(10, 34, 64)\n       - 辅助色/卡片背景：浅天蓝 Color.FromArgb(232, 240, 254) 或 经典蓝 Color.FromArgb(26, 115, 232)\n       - 点缀强调色（10%）：温暖橙/金色 Color.FromArgb(245, 166, 35) 或 珊瑚红 Color.FromArgb(234, 67, 53)\n     * 现代商务炭黑主题：\n       - 主色：炭黑色 Color.FromArgb(43, 43, 43)\n       - 辅助色：浅灰色 Color.FromArgb(240, 240, 240)\n       - 点缀色：青/湖蓝色 Color.FromArgb(0, 168, 181)\n     * 暖调人文/学术主题：\n       - 主色：深林绿 Color.FromArgb(27, 67, 50)\n       - 辅助色：柔和米色 Color.FromArgb(245, 242, 235)\n       - 点缀色：赤陶红/土黄 Color.FromArgb(190, 130, 60)\n   - 遵守 60-30-10 比例：背景占 60% 视觉面积，文字/卡片容器等次要元素占 30%，画龙点睛的重点高亮（如关键数字、重点结论词、边框线装饰）占 10%。\n\n2. 视觉层级与字号梯度（Visual Hierarchy & Text Scales）：\n   - 建立清晰鲜明的字号差，中文默认使用“微软雅黑” (Microsoft YaHei)，英文默认使用“Segoe UI”：\n     * 幻灯片大标题（Slide Title）：36pt - 44pt，粗体 (Bold)，深色高对比度。\n     * 章节/卡片小标题（Card Header）：20pt - 24pt，粗体。\n     * 正文内容（Body Text）：14pt - 18pt，常规体 (Regular)，中等对比度（如深灰）。\n     * 关键数据/大数字（Big Stat/Metric）：48pt - 72pt 粗体，可搭配 12pt 的解释性小字。\n   - 为确保文字排版完美，对所有新创建的文本框设置以下属性以防文本溢出或不对齐：\n     * shape.TextFrame.WordWrap = Office.MsoTriState.msoTrue; // 开启自动换行\n     * 适当清除或缩小默认内边距：\n       shape.TextFrame.MarginLeft = 10f;\n       shape.TextFrame.MarginRight = 10f;\n       shape.TextFrame.MarginTop = 10f;\n       shape.TextFrame.MarginBottom = 10f;\n\n3. 负空间与留白（Negative Space & Whitespace）：\n   - 不要把幻灯片塞满！页面必须保留至少 30% - 40% 的空白区域，让观众的眼睛有呼吸的空间。\n   - 绝不允许使用大段文字，请将文字提炼为短句，以列表或卡片形式展现。\n\n4. 动态网格布局与防重叠（Dynamic Grid Layout & Math Positioning）：\n   - 永远通过代码动态获取幻灯片的物理大小，并在此基础上进行百分比定位或网格分栏计算，严禁使用写死的绝对坐标导致在不同比例的PPT中排版错乱：\n     float slideWidth = Application.ActivePresentation.PageSetup.SlideWidth;\n     float slideHeight = Application.ActivePresentation.PageSetup.SlideHeight;\n   - 留出四周安全边距（Margin，通常设为 slideWidth * 0.06f 与 slideHeight * 0.08f）。\n   - 如果需要展示并列的多个观点，应自动计算分栏位置：\n     * 两栏布局：左栏占宽 45%，右栏占宽 45%，中间留空 10%。\n     * 三分栏卡片布局示例：\n       float margin = slideWidth * 0.05f;\n       float availableWidth = slideWidth - 2 * margin;\n       float gap = 20f; // 卡片间距\n       float cardWidth = (availableWidth - 2 * gap) / 3f;\n       float cardHeight = slideHeight * 0.5f;\n       float top = slideHeight * 0.3f;\n       for (int i = 0; i < 3; i++) {\n           float left = margin + i * (cardWidth + gap);\n           // 在 left, top, cardWidth, cardHeight 处绘制卡片容器\n       }\n   - 通过数学计算绝对保证生成的文本框、容器形状之间不会重叠。\n\n5. 扁平化容器卡片化（Flat Card-Based Design）：\n   - 列表或并列观点应使用“浅色卡片”作为容器装载，卡片背景填充非常浅的颜色（如 RGB: 245, 245, 245），并且必须去掉边框轮廓以符合现代扁平化审美：\n     cardShape.Line.Visible = Office.MsoTriState.msoFalse;\n     cardShape.Fill.ForeColor.RGB = ColorTranslator.ToOle(Color.FromArgb(245, 245, 245));\n   - 在卡片之上叠放文字形状时，通过 Y 坐标偏移（如 cardTop + 15 放置标题，cardTop + 45 放置正文）使排版整洁大方。\n   - 尽量使用无轮廓（`Line.Visible = msoFalse`）的形状，如果使用线条，应保持极细（`Line.Weight = 1.0f`）且使用温和的淡灰色。\";\n        }\n\n        private void TxtInput_KeyDown(object sender, KeyEventArgs e)\n        {\n            if (e.KeyCode == Keys.Enter && !e.Shift)\n            {\n                e.SuppressKeyPress = true; // Prevent newline\n                btnSend.PerformClick();\n            }\n        }\n\n        private void ClearChat()\n        {\n            chatFlowLayout.Controls.Clear();\n            conversationHistory.Clear();\n            InitializeSystemMessage();\n        }\n\n        private void AppendBubble(string text, bool isUser, bool isSystem, bool isError = false)\n        {\n            // Strip emojis from the text to prevent square box characters in RichTextBox\n            text = StripEmojis(text);\n\n            ChatRowPanel row = new ChatRowPanel(text, isUser, isSystem, isError, chatFlowLayout.Width - 25);\n            chatFlowLayout.Controls.Add(row);\n            \n            chatFlowLayout.PerformLayout();\n            chatFlowLayout.ScrollControlIntoView(row);\n            \n            try\n            {\n                chatFlowLayout.VerticalScroll.Value = chatFlowLayout.VerticalScroll.Maximum;\n            }\n            catch {}\n        }\n\n        private static string StripEmojis(string text)\n        {\n            if (string.IsNullOrEmpty(text)) return text;\n            try\n            {\n                // Remove surrogate pairs and symbol ranges (emojis, icons, private use areas)\n                return Regex.Replace(text, @\"\\p{Cs}|\\p{So}|\\p{Cn}\", \"\");\n            }\n            catch\n            {\n                return text;\n            }\n        }\n\n        private void UpdateBubbleWidths()\n        {\n            if (chatFlowLayout == null) return;\n            chatFlowLayout.SuspendLayout();\n            int targetWidth = chatFlowLayout.Width - 25;\n            if (targetWidth < 100) targetWidth = 100;\n            foreach (Control ctrl in chatFlowLayout.Controls)\n            {\n                if (ctrl is ChatRowPanel row)\n                {\n                    row.UpdateWidth(targetWidth);\n                }\n            }\n            chatFlowLayout.ResumeLayout(true);\n        }\n\n        private async Task HandleSendAsync()\n        {\n            if (isGenerating)\n            {\n                cts?.Cancel();\n                return;\n            }\n\n            string message = txtInput.Text.Trim();\n            if (string.IsNullOrEmpty(message)) return;\n\n            if (string.IsNullOrEmpty(currentConfig.ApiKey))\n            {\n                MessageBox.Show(\"请先配置 API Key！\", \"提示\", MessageBoxButtons.OK, MessageBoxIcon.Warning);\n                BtnSettings_Click(null, null);\n                return;\n            }\n\n            txtInput.Text = \"\";\n            AppendBubble(message, isUser: true, isSystem: false);\n            conversationHistory.Add(new ChatMessage { Role = \"user\", Content = message });\n\n            isGenerating = true;\n            btnSend.Text = \"停止\";\n            btnSend.BackColor = Color.FromArgb(209, 52, 56);\n            txtInput.Enabled = false;\n            btnClear.Enabled = false;\n            btnSettings.Enabled = false;\n\n            cts = new CancellationTokenSource();\n\n            try\n            {\n                await RunAgentLoopAsync(cts.Token);\n            }\n            catch (OperationCanceledException)\n            {\n                AppendBubble(\"[已终止]: 用户中止了 AI 响应。\", isUser: false, isSystem: true, isError: false);\n            }\n            catch (Exception ex)\n            {\n                AppendBubble($\"[AI 调用出错]:\\n{ex.ToString()}\", isUser: false, isSystem: true, isError: true);\n            }\n            finally\n            {\n                isGenerating = false;\n                btnSend.Text = \"发送\";\n                btnSend.BackColor = Color.FromArgb(0, 120, 212);\n                \n                txtInput.Enabled = true;\n                btnClear.Enabled = true;\n                btnSettings.Enabled = true;\n\n                cts?.Dispose();\n                cts = null;\n            }\n        }\n\n        private async Task RunAgentLoopAsync(CancellationToken token)\n        {\n            int maxIterations = 5;\n            int currentIteration = 0;\n\n            var tools = new List<ChatTool>\n            {\n                new ChatTool\n                {\n                    Function = new ToolFunction\n                    {\n                        Name = \"execute_csharp_code\",\n                        Description = \"在幻灯片中动态编译并执行C#代码来操作系统。代码将被放置在 `public static void Run(PowerPoint.Application Application)` 方法体中运行。你可以使用任何 PowerPoint API 进行操作。\",\n                        Parameters = new ToolParameters\n                        {\n                            Properties = new Dictionary<string, object>\n                            {\n                                {\n                                    \"code\", new Dictionary<string, string>\n                                    {\n                                        { \"type\", \"string\" },\n                                        { \"description\", \"要执行的 C# 语句。必须使用合法的 C# 语法，不用声明 class 或 method，只写方法体内部的执行代码。\" }\n                                    }\n                                }\n                            },\n                            Required = new List<string> { \"code\" }\n                        }\n                    }\n                }\n            };\n\n            while (currentIteration < maxIterations)\n            {\n                token.ThrowIfCancellationRequested();\n                currentIteration++;\n\n                var request = new ChatRequest\n                {\n                    Model = currentConfig.Model,\n                    Messages = conversationHistory,\n                    Tools = tools,\n                    ToolChoice = \"auto\"\n                };\n\n                string requestJson = JsonConvert.SerializeObject(request);\n                var content = new StringContent(requestJson, Encoding.UTF8, \"application/json\");\n\n                httpClient.DefaultRequestHeaders.Clear();\n                httpClient.DefaultRequestHeaders.Add(\"Authorization\", $\"Bearer {currentConfig.ApiKey}\");\n\n                string url = currentConfig.ApiUrl.TrimEnd('/') + \"/chat/completions\";\n                \n                HttpResponseMessage response;\n                try\n                {\n                    response = await httpClient.PostAsync(url, content, token);\n                }\n                catch (OperationCanceledException)\n                {\n                    throw;\n                }\n                catch (Exception ex)\n                {\n                    throw new Exception($\"无法连接到 AI 服务，网络连接异常: {ex.Message}\\n请求地址: {url}\\n\\n详细信息:\\n{ex.ToString()}\");\n                }\n\n                token.ThrowIfCancellationRequested();\n                string responseJson = await response.Content.ReadAsStringAsync();\n                if (!response.IsSuccessStatusCode)\n                {\n                    string errorDetails = \"\";\n                    try\n                    {\n                        var errRes = JsonConvert.DeserializeObject<ChatResponse>(responseJson);\n                        errorDetails = errRes?.Error?.Message;\n                    }\n                    catch {}\n                    if (string.IsNullOrEmpty(errorDetails))\n                    {\n                        errorDetails = responseJson;\n                    }\n                    throw new Exception($\"API 请求失败 (HTTP {response.StatusCode} - {response.ReasonPhrase}):\\n{errorDetails}\");\n                }\n\n                var chatRes = JsonConvert.DeserializeObject<ChatResponse>(responseJson);\n                if (chatRes == null || chatRes.Choices == null || chatRes.Choices.Count == 0)\n                {\n                    throw new Exception(\"API 返回了空响应，无法处理。\");\n                }\n\n                var choiceMessage = chatRes.Choices[0].Message;\n                conversationHistory.Add(choiceMessage);\n\n                if (!string.IsNullOrEmpty(choiceMessage.Content))\n                {\n                    AppendBubble(choiceMessage.Content, isUser: false, isSystem: false);\n                }\n\n                if (choiceMessage.ToolCalls != null && choiceMessage.ToolCalls.Count > 0)\n                {\n                    token.ThrowIfCancellationRequested();\n                    foreach (var toolCall in choiceMessage.ToolCalls)\n                    {\n                        if (toolCall.Function.Name == \"execute_csharp_code\")\n                        {\n                            string code = \"\";\n                            try\n                            {\n                                var args = JsonConvert.DeserializeObject<Dictionary<string, string>>(toolCall.Function.Arguments);\n                                if (args != null && args.TryGetValue(\"code\", out string argCode))\n                                {\n                                    code = argCode;\n                                }\n                            }\n                            catch (Exception ex)\n                            {\n                                string toolErr = $\"解析参数失败: {ex.Message}\";\n                                conversationHistory.Add(new ChatMessage\n                                {\n                                    Role = \"tool\",\n                                    Name = \"execute_csharp_code\",\n                                    Content = toolErr,\n                                    ToolCallId = toolCall.Id\n                                });\n                                AppendBubble($\"[工具调用解析失败]\\n{toolErr}\", isUser: false, isSystem: true, isError: true);\n                                continue;\n                            }\n\n                            AppendBubble($\"[AI 请求执行 C# 代码]:\\n{code}\", isUser: false, isSystem: true);\n\n                            string runResult = \"\";\n                            try\n                            {\n                                runResult = CSharpExecutor.Execute(code, Globals.ThisAddIn.Application);\n                            }\n                            catch (Exception ex)\n                            {\n                                runResult = $\"Critical Runtime Error: {ex.Message}\";\n                            }\n\n                            conversationHistory.Add(new ChatMessage\n                            {\n                                Role = \"tool\",\n                                Name = \"execute_csharp_code\",\n                                Content = runResult,\n                                ToolCallId = toolCall.Id\n                            });\n\n                            if (runResult == \"Success\")\n                            {\n                                AppendBubble(\"[执行结果]: 成功！\", isUser: false, isSystem: true);\n                            }\n                            else\n                            {\n                                AppendBubble($\"[执行结果]: 失败！\\n{runResult}\", isUser: false, isSystem: true, isError: true);\n                            }\n                        }\n                    }\n                    continue;\n                }\n\n                break;\n            }\n        }\n\n        public static Bitmap CreateIcon(string type, int size, Color color)\n        {\n            Bitmap bmp = new Bitmap(size, size);\n            using (Graphics g = Graphics.FromImage(bmp))\n            {\n                g.SmoothingMode = SmoothingMode.AntiAlias;\n                g.Clear(Color.Transparent);\n                using (Pen pen = new Pen(color, 1.8f))\n                using (Brush brush = new SolidBrush(color))\n                {\n                    if (type == \"settings\")\n                    {\n                        int r1 = size / 2 - 1;\n                        int r2 = size / 2 - 4;\n                        int cx = size / 2;\n                        int cy = size / 2;\n                        g.DrawEllipse(pen, cx - r2, cy - r2, r2 * 2, r2 * 2);\n                        \n                        for (int i = 0; i < 8; i++)\n                        {\n                            double angle = i * Math.PI / 4;\n                            float x1 = (float)(cx + r2 * Math.Cos(angle));\n                            float y1 = (float)(cy + r2 * Math.Sin(angle));\n                            float x2 = (float)(cx + r1 * Math.Cos(angle));\n                            float y2 = (float)(cy + r1 * Math.Sin(angle));\n                            g.DrawLine(pen, x1, y1, x2, y2);\n                        }\n                    }\n                    else if (type == \"trash\")\n                    {\n                        g.DrawRectangle(pen, 4, 5, size - 9, size - 8);\n                        g.DrawLine(pen, 2, 3, size - 3, 3);\n                        g.DrawLine(pen, 6, 1, size - 7, 1);\n                        g.DrawLine(pen, 7, 7, 7, size - 5);\n                        g.DrawLine(pen, size / 2, 7, size / 2, size - 5);\n                        g.DrawLine(pen, size - 8, 7, size - 8, size - 5);\n                    }\n                }\n            }\n            return bmp;\n        }\n    }\n\n    // --- Settings Dialog Form ---\n    public class AISettingsForm : Form\n    {\n        private ComboBox cmbPresets;\n        private Button btnAddPreset;\n        private Button btnDeletePreset;\n        private TextBox txtPresetName;\n        private TextBox txtApiUrl;\n        private TextBox txtApiKey;\n        private CheckBox chkShowKey;\n        private TextBox txtModel;\n        private TextBox txtSystemPrompt;\n        private Button btnSave;\n        private Button btnCancel;\n        private Button btnRestoreDefault;\n        private AIConfig config;\n        private List<AIPreset> tempPresets;\n        private string activePresetName;\n        private AIPreset currentEditingPreset = null;\n\n        public AISettingsForm(AIConfig currentConfig)\n        {\n            this.config = currentConfig;\n            this.tempPresets = new List<AIPreset>();\n            foreach (var p in currentConfig.Presets)\n                tempPresets.Add(new AIPreset { Name = p.Name, ApiUrl = p.ApiUrl, ApiKey = p.ApiKey, Model = p.Model, SystemPrompt = p.SystemPrompt });\n            this.activePresetName = currentConfig.CurrentPresetName;\n            InitializeComponent();\n            LoadPresetsToCombo();\n        }\n\n        private void InitializeComponent()\n        {\n            this.Text = \"AI 助手设置\";\n            this.Size = new Size(620, 580);\n            this.FormBorderStyle = FormBorderStyle.FixedDialog;\n            this.MaximizeBox = false;\n            this.MinimizeBox = false;\n            this.StartPosition = FormStartPosition.CenterParent;\n            this.Font = new Font(\"Microsoft YaHei\", 9F);\n            this.BackColor = Color.White;\n\n            Label lblSelectPreset = new Label { Text = \"选择预设:\", Location = new Point(15, 20), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            cmbPresets = new ComboBox { DropDownStyle = ComboBoxStyle.DropDownList, Location = new Point(100, 20), Width = 280, Height = 24 };\n\n            btnAddPreset = new Button { Text = \"新增\", Location = new Point(390, 18), Width = 90, Height = 28, BackColor = Color.FromArgb(240, 240, 240), FlatStyle = FlatStyle.Flat };\n            btnAddPreset.FlatAppearance.BorderColor = Color.LightGray;\n            btnDeletePreset = new Button { Text = \"删除\", Location = new Point(490, 18), Width = 90, Height = 28, BackColor = Color.FromArgb(240, 240, 240), FlatStyle = FlatStyle.Flat };\n            btnDeletePreset.FlatAppearance.BorderColor = Color.LightGray;\n\n            Label lblPresetName = new Label { Text = \"预设名称:\", Location = new Point(15, 60), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtPresetName = new TextBox { Location = new Point(100, 60), Width = 480 };\n            txtPresetName.TextChanged += TxtPresetName_TextChanged;\n\n            Label lblUrl = new Label { Text = \"API 地址:\", Location = new Point(15, 100), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtApiUrl = new TextBox { Location = new Point(100, 100), Width = 480 };\n\n            Label lblKey = new Label { Text = \"API Key:\", Location = new Point(15, 140), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtApiKey = new TextBox { Location = new Point(100, 140), Width = 400, PasswordChar = '*' };\n            chkShowKey = new CheckBox { Text = \"显示\", Location = new Point(510, 140), Width = 70, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            chkShowKey.CheckedChanged += (s, e) => { txtApiKey.PasswordChar = chkShowKey.Checked ? '\\0' : '*'; };\n\n            Label lblModel = new Label { Text = \"模型名称:\", Location = new Point(15, 180), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtModel = new TextBox { Location = new Point(100, 180), Width = 480 };\n\n            Label lblPrompt = new Label { Text = \"系统提示词:\", Location = new Point(15, 220), Width = 85, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtSystemPrompt = new TextBox { Location = new Point(100, 220), Width = 480, Height = 240, Multiline = true, ScrollBars = ScrollBars.Vertical, Font = new Font(\"Microsoft YaHei\", 9F) };\n\n            btnRestoreDefault = new Button { Text = \"恢复默认提示词\", Location = new Point(100, 485), Width = 150, Height = 28, FlatStyle = FlatStyle.Flat };\n            btnRestoreDefault.FlatAppearance.BorderColor = Color.LightGray;\n            btnRestoreDefault.Click += (s, e) => { txtSystemPrompt.Text = AISidebarControl.GetDefaultSystemPrompt(); };\n\n            btnSave = new Button { Text = \"保存\", DialogResult = DialogResult.OK, Location = new Point(380, 485), Width = 90, Height = 28, BackColor = Color.FromArgb(0, 120, 212), ForeColor = Color.White, FlatStyle = FlatStyle.Flat };\n            btnSave.FlatAppearance.BorderSize = 0;\n            btnCancel = new Button { Text = \"取消\", DialogResult = DialogResult.Cancel, Location = new Point(490, 485), Width = 90, Height = 28, FlatStyle = FlatStyle.Flat };\n            btnCancel.FlatAppearance.BorderColor = Color.LightGray;\n\n            this.Controls.AddRange(new Control[] {\n                lblSelectPreset, cmbPresets, btnAddPreset, btnDeletePreset,\n                lblPresetName, txtPresetName, lblUrl, txtApiUrl,\n                lblKey, txtApiKey, chkShowKey, lblModel, txtModel,\n                lblPrompt, txtSystemPrompt, btnRestoreDefault, btnSave, btnCancel\n            });\n            this.AcceptButton = btnSave;\n            this.CancelButton = btnCancel;\n            btnAddPreset.Click += BtnAddPreset_Click;\n            btnDeletePreset.Click += BtnDeletePreset_Click;\n        }\n\n        private void LoadPresetsToCombo()\n        {\n            cmbPresets.SelectedIndexChanged -= CmbPresets_SelectedIndexChanged;\n            cmbPresets.DataSource = null;\n            cmbPresets.DataSource = tempPresets;\n            cmbPresets.DisplayMember = \"Name\";\n            int idx = tempPresets.FindIndex(p => p.Name == activePresetName);\n            if (idx < 0 && tempPresets.Count > 0) idx = 0;\n            cmbPresets.SelectedIndex = idx;\n            if (idx >= 0) { LoadPresetToFields(tempPresets[idx]); activePresetName = tempPresets[idx].Name; }\n            cmbPresets.SelectedIndexChanged += CmbPresets_SelectedIndexChanged;\n        }\n\n        private void SaveCurrentPresetEdits()\n        {\n            if (currentEditingPreset != null)\n            {\n                currentEditingPreset.Name = txtPresetName.Text.Trim();\n                currentEditingPreset.ApiUrl = txtApiUrl.Text.Trim();\n                currentEditingPreset.ApiKey = txtApiKey.Text.Trim();\n                currentEditingPreset.Model = txtModel.Text.Trim();\n                currentEditingPreset.SystemPrompt = txtSystemPrompt.Text;\n            }\n        }\n\n        private void LoadPresetToFields(AIPreset preset)\n        {\n            currentEditingPreset = preset;\n            if (preset != null)\n            {\n                txtPresetName.Text = preset.Name;\n                txtApiUrl.Text = preset.ApiUrl;\n                txtApiKey.Text = preset.ApiKey;\n                txtModel.Text = preset.Model;\n                txtSystemPrompt.Text = preset.SystemPrompt;\n            }\n        }\n\n        private void CmbPresets_SelectedIndexChanged(object sender, EventArgs e)\n        {\n            SaveCurrentPresetEdits();\n            if (cmbPresets.SelectedIndex >= 0)\n            {\n                var selected = cmbPresets.SelectedItem as AIPreset;\n                LoadPresetToFields(selected);\n                this.activePresetName = selected?.Name ?? \"\";\n            }\n        }\n\n        private void TxtPresetName_TextChanged(object sender, EventArgs e)\n        {\n            if (currentEditingPreset != null && cmbPresets.SelectedItem == currentEditingPreset)\n            {\n                string newName = txtPresetName.Text.Trim();\n                if (!string.IsNullOrEmpty(newName) && currentEditingPreset.Name != newName)\n                {\n                    currentEditingPreset.Name = newName;\n                    int idx = cmbPresets.SelectedIndex;\n                    cmbPresets.SelectedIndexChanged -= CmbPresets_SelectedIndexChanged;\n                    cmbPresets.DataSource = null;\n                    cmbPresets.DataSource = tempPresets;\n                    cmbPresets.DisplayMember = \"Name\";\n                    cmbPresets.SelectedIndex = idx;\n                    cmbPresets.SelectedIndexChanged += CmbPresets_SelectedIndexChanged;\n                }\n            }\n        }\n\n        private void BtnAddPreset_Click(object sender, EventArgs e)\n        {\n            SaveCurrentPresetEdits();\n            int count = 1;\n            string newName = \"New Preset\";\n            while (tempPresets.Exists(p => p.Name == $\"{newName} {count}\")) count++;\n            string finalName = $\"{newName} {count}\";\n            var newPreset = new AIPreset { Name = finalName, ApiUrl = \"https://api.openai.com/v1\", ApiKey = \"\", Model = \"gpt-4o\", SystemPrompt = AISidebarControl.GetDefaultSystemPrompt() };\n            tempPresets.Add(newPreset);\n            activePresetName = finalName;\n            LoadPresetsToCombo();\n        }\n\n        private void BtnDeletePreset_Click(object sender, EventArgs e)\n        {\n            if (tempPresets.Count <= 1) { MessageBox.Show(\"必须保留至少一个预设！\", \"提示\", MessageBoxButtons.OK, MessageBoxIcon.Warning); return; }\n            if (cmbPresets.SelectedItem is AIPreset selected)\n            {\n                if (MessageBox.Show($\"确定删除预设 '{selected.Name}' 吗？\", \"确认删除\", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)\n                {\n                    tempPresets.Remove(selected);\n                    currentEditingPreset = null;\n                    activePresetName = tempPresets[0].Name;\n                    LoadPresetsToCombo();\n                }\n            }\n        }\n\n        public void UpdateConfig(AIConfig targetConfig)\n        {\n            SaveCurrentPresetEdits();\n            targetConfig.Presets = this.tempPresets;\n            targetConfig.CurrentPresetName = this.activePresetName;\n        }\n    }\n\n    // --- Data Models for API ---\n    public class AIPreset\n    {\n        public string Name { get; set; } = \"Default\";\n        public string ApiUrl { get; set; } = \"https://api.openai.com/v1\";\n        public string ApiKey { get; set; } = \"\";\n        public string Model { get; set; } = \"gpt-4o\";\n        public string SystemPrompt { get; set; } = \"\";\n        public override string ToString() => Name;\n    }\n\n    public class AIConfig\n    {\n        public List<AIPreset> Presets { get; set; } = new List<AIPreset>();\n        public string CurrentPresetName { get; set; } = \"\";\n\n        [JsonIgnore]\n        public AIPreset CurrentPreset\n        {\n            get\n            {\n                if (Presets == null || Presets.Count == 0)\n                {\n                    Presets = new List<AIPreset> { new AIPreset { Name = \"Default\" } };\n                    CurrentPresetName = \"Default\";\n                }\n                var active = Presets.Find(p => p.Name == CurrentPresetName);\n                if (active == null) { active = Presets[0]; CurrentPresetName = active.Name; }\n                return active;\n            }\n        }\n\n        [JsonIgnore] public string ApiUrl { get => CurrentPreset.ApiUrl; set => CurrentPreset.ApiUrl = value; }\n        [JsonIgnore] public string ApiKey { get => CurrentPreset.ApiKey; set => CurrentPreset.ApiKey = value; }\n        [JsonIgnore] public string Model { get => CurrentPreset.Model; set => CurrentPreset.Model = value; }\n        [JsonIgnore] public string SystemPrompt { get => CurrentPreset.SystemPrompt; set => CurrentPreset.SystemPrompt = value; }\n    }\n\n    public class ChatRequest\n    {\n        [JsonProperty(\"model\")]\n        public string Model { get; set; }\n        [JsonProperty(\"messages\")]\n        public List<ChatMessage> Messages { get; set; }\n        [JsonProperty(\"tools\", NullValueHandling = NullValueHandling.Ignore)]\n        public List<ChatTool> Tools { get; set; }\n        [JsonProperty(\"tool_choice\", NullValueHandling = NullValueHandling.Ignore)]\n        public string ToolChoice { get; set; }\n    }\n\n    public class ChatMessage\n    {\n        [JsonProperty(\"role\")]\n        public string Role { get; set; }\n        [JsonProperty(\"content\", NullValueHandling = NullValueHandling.Ignore)]\n        public string Content { get; set; }\n        [JsonProperty(\"reasoning_content\", NullValueHandling = NullValueHandling.Ignore)]\n        public string ReasoningContent { get; set; }\n        [JsonProperty(\"tool_calls\", NullValueHandling = NullValueHandling.Ignore)]\n        public List<ToolCall> ToolCalls { get; set; }\n        [JsonProperty(\"tool_call_id\", NullValueHandling = NullValueHandling.Ignore)]\n        public string ToolCallId { get; set; }\n        [JsonProperty(\"name\", NullValueHandling = NullValueHandling.Ignore)]\n        public string Name { get; set; }\n    }\n\n    public class ChatTool\n    {\n        [JsonProperty(\"type\")]\n        public string Type { get; set; } = \"function\";\n        [JsonProperty(\"function\")]\n        public ToolFunction Function { get; set; }\n    }\n\n    public class ToolFunction\n    {\n        [JsonProperty(\"name\")]\n        public string Name { get; set; }\n        [JsonProperty(\"description\")]\n        public string Description { get; set; }\n        [JsonProperty(\"parameters\")]\n        public ToolParameters Parameters { get; set; }\n    }\n\n    public class ToolParameters\n    {\n        [JsonProperty(\"type\")]\n        public string Type { get; set; } = \"object\";\n        [JsonProperty(\"properties\")]\n        public Dictionary<string, object> Properties { get; set; }\n        [JsonProperty(\"required\")]\n        public List<string> Required { get; set; }\n    }\n\n    public class ToolCall\n    {\n        [JsonProperty(\"id\")]\n        public string Id { get; set; }\n        [JsonProperty(\"type\")]\n        public string Type { get; set; }\n        [JsonProperty(\"function\")]\n        public ToolCallFunction Function { get; set; }\n    }\n\n    public class ToolCallFunction\n    {\n        [JsonProperty(\"name\")]\n        public string Name { get; set; }\n        [JsonProperty(\"arguments\")]\n        public string Arguments { get; set; }\n    }\n\n    public class ChatResponse\n    {\n        [JsonProperty(\"choices\")]\n        public List<ChatChoice> Choices { get; set; }\n        [JsonProperty(\"error\")]\n        public ApiError Error { get; set; }\n    }\n\n    public class ChatChoice\n    {\n        [JsonProperty(\"message\")]\n        public ChatMessage Message { get; set; }\n    }\n\n    public class ApiError\n    {\n        [JsonProperty(\"message\")]\n        public string Message { get; set; }\n    }\n\n    // --- Custom UI Controls ---\n    public class ChatRowPanel : Panel\n    {\n        [System.Runtime.InteropServices.DllImport(\"user32.dll\")]\n        private static extern bool HideCaret(IntPtr hWnd);\n\n        private Panel bubblePanel;\n        private RichTextBox rtbText;\n        private bool isUser;\n        private bool isSystem;\n        private bool isError;\n\n        // Collapsible properties\n        private bool isCollapsible = false;\n        private bool isExpanded = false;\n        private string headerText = \"\";\n        private string bodyText = \"\";\n        private Panel headerPanel;\n        private Button btnToggle;\n\n        public ChatRowPanel(string text, bool isUser, bool isSystem, bool isError, int width)\n        {\n            this.isUser = isUser;\n            this.isSystem = isSystem;\n            this.isError = isError;\n            this.Width = width;\n            this.BackColor = Color.Transparent;\n\n            // Check if it is a collapsible code block or output log\n            if (isSystem && (text.StartsWith(\"[AI 请求执行 C# 代码]:\") || text.StartsWith(\"[执行结果]:\")))\n            {\n                int firstNewLine = text.IndexOf('\\n');\n                if (firstNewLine >= 0)\n                {\n                    headerText = text.Substring(0, firstNewLine).TrimEnd(':');\n                    bodyText = text.Substring(firstNewLine + 1);\n                    isCollapsible = !string.IsNullOrWhiteSpace(bodyText);\n                }\n                else\n                {\n                    headerText = text;\n                    bodyText = \"\";\n                    isCollapsible = false;\n                }\n                isExpanded = false; // Collapsed by default\n            }\n\n            bubblePanel = new Panel\n            {\n                BackColor = Color.Transparent,\n                Padding = new Padding(10, 8, 10, 8),\n                AutoSize = false\n            };\n\n            rtbText = new RichTextBox\n            {\n                BorderStyle = BorderStyle.None,\n                ScrollBars = RichTextBoxScrollBars.None,\n                ReadOnly = true,\n                Multiline = true,\n                WordWrap = true,\n                BackColor = Color.White,\n                Font = new Font(\"Microsoft YaHei\", 9F)\n            };\n\n            rtbText.GotFocus += (s, e) => { HideCaret(rtbText.Handle); };\n            rtbText.MouseDown += (s, e) => { HideCaret(rtbText.Handle); };\n\n            if (isCollapsible)\n            {\n                headerPanel = new Panel\n                {\n                    Height = 24,\n                    BackColor = Color.Transparent,\n                    Location = new Point(10, 6)\n                };\n\n                Label lblHeader = new Label\n                {\n                    Text = headerText,\n                    Font = new Font(\"Microsoft YaHei\", 9F, FontStyle.Bold),\n                    ForeColor = isError ? Color.FromArgb(180, 40, 40) : Color.FromArgb(80, 80, 80),\n                    Location = new Point(0, 3),\n                    AutoSize = true\n                };\n                headerPanel.Controls.Add(lblHeader);\n\n                btnToggle = new Button\n                {\n                    Text = \"▶ 展开\",\n                    Font = new Font(\"Microsoft YaHei\", 8F),\n                    FlatStyle = FlatStyle.Flat,\n                    BackColor = Color.Transparent,\n                    ForeColor = Color.FromArgb(0, 120, 212),\n                    Location = new Point(lblHeader.Right + 6, 1),\n                    Width = 48,\n                    Height = 22,\n                    Cursor = Cursors.Hand\n                };\n                btnToggle.FlatAppearance.BorderSize = 0;\n                btnToggle.FlatAppearance.MouseOverBackColor = Color.FromArgb(230, 230, 230);\n                btnToggle.Click += BtnToggle_Click;\n                headerPanel.Controls.Add(btnToggle);\n\n                lblHeader.SizeChanged += (s, e) => { btnToggle.Left = lblHeader.Right + 6; };\n\n                bubblePanel.Controls.Add(headerPanel);\n\n                rtbText.Text = bodyText;\n                rtbText.Font = new Font(\"Consolas\", 8.5F);\n                rtbText.ForeColor = Color.FromArgb(60, 60, 60);\n                rtbText.Location = new Point(10, 32);\n                rtbText.Visible = false;\n\n                bubblePanel.Controls.Add(rtbText);\n            }\n            else\n            {\n                FormatMarkdown(rtbText, text, isUser);\n                rtbText.Location = new Point(10, 8);\n                bubblePanel.Controls.Add(rtbText);\n            }\n\n            bubblePanel.Paint += BubblePanel_Paint;\n            this.Controls.Add(bubblePanel);\n            UpdatePosition(width);\n        }\n\n        private void BtnToggle_Click(object sender, EventArgs e)\n        {\n            isExpanded = !isExpanded;\n            rtbText.Visible = isExpanded;\n            btnToggle.Text = isExpanded ? \"▼ 收起\" : \"▶ 展开\";\n            \n            UpdatePosition(this.Width);\n            \n            if (this.Parent is FlowLayoutPanel flp)\n            {\n                flp.PerformLayout();\n            }\n        }\n\n        private void BubblePanel_Paint(object sender, PaintEventArgs e)\n        {\n            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;\n            Color backColor;\n            if (isError) backColor = Color.FromArgb(253, 231, 233);\n            else if (isSystem) backColor = Color.FromArgb(240, 240, 240);\n            else if (isUser) backColor = Color.FromArgb(0, 120, 212);\n            else backColor = Color.White;\n\n            using (GraphicsPath path = GetRoundedPath(new Rectangle(0, 0, bubblePanel.Width - 1, bubblePanel.Height - 1), 8))\n            using (SolidBrush brush = new SolidBrush(backColor))\n            {\n                e.Graphics.FillPath(brush, path);\n            }\n\n            if (!isUser && !isError)\n            {\n                using (GraphicsPath path = GetRoundedPath(new Rectangle(0, 0, bubblePanel.Width - 1, bubblePanel.Height - 1), 8))\n                using (Pen pen = new Pen(Color.FromArgb(220, 220, 220), 1))\n                {\n                    e.Graphics.DrawPath(pen, path);\n                }\n            }\n        }\n\n        private GraphicsPath GetRoundedPath(Rectangle rect, int radius)\n        {\n            GraphicsPath path = new GraphicsPath();\n            int d = radius * 2;\n            path.AddArc(rect.X, rect.Y, d, d, 180, 90);\n            path.AddArc(rect.Right - d, rect.Y, d, d, 270, 90);\n            path.AddArc(rect.Right - d, rect.Bottom - d, d, d, 0, 90);\n            path.AddArc(rect.X, rect.Bottom - d, d, d, 90, 90);\n            path.CloseFigure();\n            return path;\n        }\n\n        public void UpdateWidth(int width)\n        {\n            this.Width = width;\n            UpdatePosition(width);\n        }\n\n        private void UpdatePosition(int width)\n        {\n            int maxBubbleWidth = Convert.ToInt32(width * 0.85);\n            int innerPaddingWidth = 20;\n\n            int textWidth = maxBubbleWidth - innerPaddingWidth;\n            if (textWidth < 50) textWidth = 50;\n\n            // 1. Calculate the final bubble and RichTextBox widths\n            Size measuredSize = TextRenderer.MeasureText(rtbText.Text, rtbText.Font, new Size(textWidth - 20, 0), TextFormatFlags.WordBreak);\n            \n            int finalBubbleWidth;\n            if (isCollapsible)\n            {\n                finalBubbleWidth = maxBubbleWidth;\n            }\n            else\n            {\n                finalBubbleWidth = Math.Min(measuredSize.Width + innerPaddingWidth + 10, maxBubbleWidth);\n            }\n\n            int finalRtbWidth = finalBubbleWidth - innerPaddingWidth;\n            if (finalRtbWidth < 50) finalRtbWidth = 50;\n\n            rtbText.Width = finalRtbWidth;\n\n            // Force handle creation so GetPositionFromCharIndex is completely accurate\n            var handle = rtbText.Handle;\n\n            // 2. Measure precise text wrapping height natively\n            int calculatedHeight = 0;\n            if (!string.IsNullOrEmpty(rtbText.Text))\n            {\n                Point pos = rtbText.GetPositionFromCharIndex(rtbText.Text.Length - 1);\n                \n                // Fallback if handle isn't fully ready or pos.Y returns 0 unexpectedly for multi-line text\n                if (pos.Y == 0 && rtbText.Text.Contains(\"\\n\"))\n                {\n                    int lineCount = rtbText.Lines.Length;\n                    int listBonus = 0;\n                    foreach (var line in rtbText.Lines)\n                    {\n                        if (line.TrimStart().StartsWith(\"- \") || line.TrimStart().StartsWith(\"* \"))\n                        {\n                            listBonus += 15;\n                        }\n                    }\n                    int boldAndFontPadding = 24 + (lineCount * 4) + listBonus;\n                    calculatedHeight = measuredSize.Height + boldAndFontPadding;\n                }\n                else\n                {\n                    calculatedHeight = pos.Y + rtbText.Font.Height + 16;\n                }\n            }\n\n            // 3. Set control heights and layout bounds\n            if (isCollapsible)\n            {\n                headerPanel.Width = finalRtbWidth;\n                if (isExpanded)\n                {\n                    rtbText.Height = calculatedHeight;\n                    bubblePanel.Width = maxBubbleWidth;\n                    bubblePanel.Height = rtbText.Bottom + 8;\n                }\n                else\n                {\n                    bubblePanel.Width = maxBubbleWidth;\n                    bubblePanel.Height = headerPanel.Bottom + 6;\n                }\n            }\n            else\n            {\n                rtbText.Height = calculatedHeight;\n                bubblePanel.Width = finalBubbleWidth;\n                bubblePanel.Height = rtbText.Height + 16;\n            }\n\n            Color bubbleColor;\n            if (isError) bubbleColor = Color.FromArgb(253, 231, 233);\n            else if (isSystem) bubbleColor = Color.FromArgb(240, 240, 240);\n            else if (isUser) bubbleColor = Color.FromArgb(0, 120, 212);\n            else bubbleColor = Color.White;\n\n            rtbText.BackColor = bubbleColor;\n            rtbText.ForeColor = isUser ? Color.White : Color.FromArgb(33, 33, 33);\n\n            this.Height = bubblePanel.Height + 10;\n\n            if (isUser)\n            {\n                bubblePanel.Left = width - bubblePanel.Width - 5;\n            }\n            else\n            {\n                bubblePanel.Left = 5;\n            }\n            bubblePanel.Top = 5;\n            \n            bubblePanel.Invalidate();\n        }\n\n        private static void FormatMarkdown(RichTextBox rtb, string markdown, bool isUser)\n        {\n            rtb.Text = \"\";\n            rtb.SelectionBullet = false;\n            rtb.SelectionIndent = 0;\n\n            string[] lines = markdown.Split('\\n');\n            for (int l = 0; l < lines.Length; l++)\n            {\n                string line = lines[l];\n                \n                if (line.TrimStart().StartsWith(\"- \") || line.TrimStart().StartsWith(\"* \"))\n                {\n                    int bulletIndex = line.IndexOf('-');\n                    if (bulletIndex < 0) bulletIndex = line.IndexOf('*');\n                    line = line.Substring(bulletIndex + 2);\n                    rtb.SelectionBullet = true;\n                    rtb.SelectionIndent = 12;\n                }\n                else\n                {\n                    rtb.SelectionBullet = false;\n                    rtb.SelectionIndent = 0;\n                }\n\n                int i = 0;\n                while (i < line.Length)\n                {\n                    if (i + 1 < line.Length && line[i] == '*' && line[i + 1] == '*')\n                    {\n                        int next = line.IndexOf(\"**\", i + 2);\n                        if (next >= 0)\n                        {\n                            string boldText = line.Substring(i + 2, next - (i + 2));\n                            rtb.SelectionFont = new Font(rtb.Font, FontStyle.Bold);\n                            rtb.AppendText(boldText);\n                            i = next + 2;\n                        }\n                        else\n                        {\n                            rtb.SelectionFont = new Font(rtb.Font, FontStyle.Regular);\n                            rtb.AppendText(\"**\");\n                            i += 2;\n                        }\n                    }\n                    else if (line[i] == '`')\n                    {\n                        int next = line.IndexOf('`', i + 1);\n                        if (next >= 0)\n                        {\n                            string codeText = line.Substring(i + 1, next - (i + 1));\n                            \n                            rtb.SelectionFont = new Font(\"Consolas\", rtb.Font.Size);\n                            rtb.SelectionBackColor = isUser ? Color.FromArgb(0, 60, 120) : Color.FromArgb(228, 229, 230);\n                            rtb.SelectionColor = isUser ? Color.FromArgb(200, 230, 255) : Color.FromArgb(190, 50, 50);\n\n                            rtb.AppendText(codeText);\n                            \n                            rtb.SelectionBackColor = rtb.BackColor;\n                            rtb.SelectionColor = rtb.ForeColor;\n                            \n                            i = next + 1;\n                        }\n                        else\n                        {\n                            rtb.SelectionFont = new Font(rtb.Font, FontStyle.Regular);\n                            rtb.AppendText(\"`\");\n                            i++;\n                        }\n                    }\n                    else\n                    {\n                        rtb.SelectionFont = new Font(rtb.Font, FontStyle.Regular);\n                        rtb.SelectionColor = isUser ? Color.White : Color.FromArgb(33, 33, 33);\n                        rtb.AppendText(line[i].ToString());\n                        i++;\n                    }\n                }\n\n                if (l < lines.Length - 1)\n                {\n                    rtb.AppendText(Environment.NewLine);\n                }\n            }\n        }\n    }\n}\n"}, "9cdb239520d74d34e14ee1600da7f5ae3470e87f": {"t": 1785760380.6516836, "n": 59906, "h": "9e04dab5d8dcad98", "c": "using System;\nusing System.Collections.Generic;\nusing System.Drawing;\nusing System.Drawing.Drawing2D;\nusing System.IO;\nusing System.Net.Http;\nusing System.Text;\nusing System.Text.RegularExpressions;\nusing System.Threading;\nusing System.Threading.Tasks;\nusing System.Windows.Forms;\nusing Newtonsoft.Json;\nusing PowerPoint = Microsoft.Office.Interop.PowerPoint;\n\nnamespace SlideSCI\n{\n    public class AISidebarControl : UserControl\n    {\n        private FlowLayoutPanel chatFlowLayout;\n        \n        private Panel inputPanel;\n        private TextBox txtInput;\n        private Button btnSend;\n        private Button btnClear;\n        private Button btnSettings;\n        private ToolTip toolTip;\n\n        private string configPath;\n        private AIConfig currentConfig;\n        private List<ChatMessage> conversationHistory = new List<ChatMessage>();\n        private static readonly HttpClient httpClient = new HttpClient();\n        private bool isGenerating = false;\n        private CancellationTokenSource cts;\n\n        public PowerPoint.DocumentWindow AssociatedWindow { get; set; }\n\n        public AISidebarControl()\n        {\n            // Enable TLS 1.2 and TLS 1.3 for secure API calls\n            try\n            {\n                System.Net.ServicePointManager.SecurityProtocol |= \n                    System.Net.SecurityProtocolType.Tls12 | \n                    System.Net.SecurityProtocolType.Tls11 |\n                    (System.Net.SecurityProtocolType)12288; // TLS 1.3\n            }\n            catch { }\n\n            InitializeConfigPath();\n            LoadConfig();\n            InitializeComponent();\n            InitializeSystemMessage();\n        }\n\n        private void InitializeConfigPath()\n        {\n            string appData = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);\n            string slideSciDir = Path.Combine(appData, \"SlideSCI\");\n            if (!Directory.Exists(slideSciDir))\n            {\n                Directory.CreateDirectory(slideSciDir);\n            }\n            configPath = Path.Combine(slideSciDir, \"ai_config.json\");\n        }\n\n        private void LoadConfig()\n        {\n            if (File.Exists(configPath))\n            {\n                try\n                {\n                    string json = File.ReadAllText(configPath);\n                    currentConfig = JsonConvert.DeserializeObject<AIConfig>(json);\n\n                    // Migration: If no presets exist but we have old single-config fields, create a default preset\n                    if (currentConfig != null && (currentConfig.Presets == null || currentConfig.Presets.Count == 0))\n                    {\n                        var dict = JsonConvert.DeserializeObject<Dictionary<string, object>>(json);\n                        string oldUrl = dict.ContainsKey(\"ApiUrl\") ? dict[\"ApiUrl\"]?.ToString() : null;\n                        string oldKey = dict.ContainsKey(\"ApiKey\") ? dict[\"ApiKey\"]?.ToString() : null;\n                        string oldModel = dict.ContainsKey(\"Model\") ? dict[\"Model\"]?.ToString() : null;\n                        string oldPrompt = dict.ContainsKey(\"SystemPrompt\") ? dict[\"SystemPrompt\"]?.ToString() : null;\n\n                        currentConfig.Presets = new List<AIPreset>();\n                        if (!string.IsNullOrEmpty(oldUrl) || !string.IsNullOrEmpty(oldKey))\n                        {\n                            currentConfig.Presets.Add(new AIPreset\n                            {\n                                Name = \"Default\",\n                                ApiUrl = oldUrl ?? \"https://api.openai.com/v1\",\n                                ApiKey = oldKey ?? \"\",\n                                Model = oldModel ?? \"gpt-4o\",\n                                SystemPrompt = oldPrompt ?? GetDefaultSystemPrompt()\n                            });\n                            currentConfig.CurrentPresetName = \"Default\";\n                        }\n                    }\n                }\n                catch\n                {\n                    currentConfig = new AIConfig();\n                }\n            }\n            else\n            {\n                currentConfig = new AIConfig();\n            }\n\n            if (currentConfig == null) currentConfig = new AIConfig();\n\n            // Ensure we have some default presets if list is still empty\n            if (currentConfig.Presets == null || currentConfig.Presets.Count == 0)\n            {\n                currentConfig.Presets = new List<AIPreset>\n                {\n                    new AIPreset { Name = \"Kimi\", ApiUrl = \"https://api.moonshot.cn/v1\", Model = \"kimi-latest\", SystemPrompt = GetDefaultSystemPrompt() },\n                    new AIPreset { Name = \"DeepSeek\", ApiUrl = \"https://api.deepseek.com/v1\", Model = \"deepseek-chat\", SystemPrompt = GetDefaultSystemPrompt() },\n                    new AIPreset { Name = \"OpenAI\", ApiUrl = \"https://api.openai.com/v1\", Model = \"gpt-4o\", SystemPrompt = GetDefaultSystemPrompt() }\n                };\n                currentConfig.CurrentPresetName = \"Kimi\";\n                SaveConfig();\n            }\n\n            if (string.IsNullOrWhiteSpace(currentConfig.SystemPrompt) ||\n                currentConfig.SystemPrompt.Contains(\"Office.MsoShapeType.msoShapeRectangle\") ||\n                currentConfig.SystemPrompt.Contains(\"msoShapeRoundRectangle\"))\n            {\n                currentConfig.SystemPrompt = GetDefaultSystemPrompt();\n                SaveConfig();\n            }\n        }\n\n        private void SaveConfig()\n        {\n            try\n            {\n                string json = JsonConvert.SerializeObject(currentConfig, Formatting.Indented);\n                File.WriteAllText(configPath, json);\n            }\n            catch (Exception ex)\n            {\n                MessageBox.Show($\"保存设置失败: {ex.Message}\", \"错误\", MessageBoxButtons.OK, MessageBoxIcon.Error);\n            }\n        }\n\n        private void InitializeComponent()\n        {\n            this.Dock = DockStyle.Fill;\n            this.BackColor = Color.FromArgb(245, 246, 247);\n            this.Font = new Font(\"Microsoft YaHei\", 9F, FontStyle.Regular, GraphicsUnit.Point);\n\n            toolTip = new ToolTip();\n\n            // 1. Input Panel (Docked at Bottom)\n            inputPanel = new Panel\n            {\n                Dock = DockStyle.Bottom,\n                Height = 105,\n                BackColor = Color.White,\n                Padding = new Padding(10, 8, 10, 8)\n            };\n            inputPanel.Paint += (s, e) =>\n            {\n                using (Pen pen = new Pen(Color.FromArgb(225, 225, 225), 1))\n                {\n                    e.Graphics.DrawLine(pen, 0, 0, inputPanel.Width, 0);\n                }\n            };\n\n            // Custom border panel for textbox\n            Panel txtWrapper = new Panel\n            {\n                Location = new Point(10, 8),\n                Width = this.Width - 20,\n                Height = 52,\n                BackColor = Color.White,\n                Padding = new Padding(4)\n            };\n            txtWrapper.Paint += (s, e) =>\n            {\n                Color borderColor = txtInput.Focused ? Color.FromArgb(0, 120, 212) : Color.FromArgb(220, 220, 220);\n                using (Pen pen = new Pen(borderColor, 1))\n                {\n                    e.Graphics.DrawRectangle(pen, 0, 0, txtWrapper.Width - 1, txtWrapper.Height - 1);\n                }\n            };\n\n            txtInput = new TextBox\n            {\n                Multiline = true,\n                BorderStyle = BorderStyle.None,\n                Dock = DockStyle.Fill,\n                Font = new Font(\"Microsoft YaHei\", 9F),\n                ScrollBars = ScrollBars.Vertical\n            };\n            txtInput.GotFocus += (s, e) => txtWrapper.Invalidate();\n            txtInput.LostFocus += (s, e) => txtWrapper.Invalidate();\n            txtInput.KeyDown += TxtInput_KeyDown;\n            txtWrapper.Controls.Add(txtInput);\n            inputPanel.Controls.Add(txtWrapper);\n\n            // Icon-only Clear button\n            btnClear = new Button\n            {\n                Image = CreateIcon(\"trash\", 16, Color.FromArgb(100, 100, 100)),\n                FlatStyle = FlatStyle.Flat,\n                BackColor = Color.Transparent,\n                Location = new Point(10, 68),\n                Width = 28,\n                Height = 26,\n                Cursor = Cursors.Hand\n            };\n            btnClear.FlatAppearance.BorderSize = 0;\n            btnClear.FlatAppearance.MouseOverBackColor = Color.FromArgb(240, 240, 240);\n            btnClear.Click += (s, e) => ClearChat();\n            toolTip.SetToolTip(btnClear, \"清空对话\");\n            inputPanel.Controls.Add(btnClear);\n\n            // Icon-only Settings button\n            btnSettings = new Button\n            {\n                Image = CreateIcon(\"settings\", 16, Color.FromArgb(100, 100, 100)),\n                FlatStyle = FlatStyle.Flat,\n                BackColor = Color.Transparent,\n                Location = new Point(44, 68),\n                Width = 28,\n                Height = 26,\n                Cursor = Cursors.Hand\n            };\n            btnSettings.FlatAppearance.BorderSize = 0;\n            btnSettings.FlatAppearance.MouseOverBackColor = Color.FromArgb(240, 240, 240);\n            btnSettings.Click += BtnSettings_Click;\n            toolTip.SetToolTip(btnSettings, \"AI 设置\");\n            inputPanel.Controls.Add(btnSettings);\n\n            btnSend = new Button\n            {\n                Text = \"发送\",\n                FlatStyle = FlatStyle.Flat,\n                BackColor = Color.FromArgb(0, 120, 212),\n                ForeColor = Color.White,\n                Font = new Font(\"Microsoft YaHei\", 9F, FontStyle.Bold),\n                Location = new Point(this.Width - 75, 68),\n                Width = 65,\n                Height = 26,\n                Cursor = Cursors.Hand\n            };\n            btnSend.FlatAppearance.BorderSize = 0;\n            btnSend.Click += async (s, e) => await HandleSendAsync();\n            inputPanel.Controls.Add(btnSend);\n\n            this.Controls.Add(inputPanel);\n\n            // 2. Chat Flow Layout Panel (Docked Fill)\n            chatFlowLayout = new FlowLayoutPanel\n            {\n                Dock = DockStyle.Fill,\n                AutoScroll = true,\n                FlowDirection = FlowDirection.LeftToRight,\n                WrapContents = true,\n                Padding = new Padding(8),\n                BackColor = Color.FromArgb(245, 246, 247)\n            };\n            typeof(FlowLayoutPanel).InvokeMember(\"DoubleBuffered\",\n                System.Reflection.BindingFlags.SetProperty | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic,\n                null, chatFlowLayout, new object[] { true });\n\n            this.Controls.Add(chatFlowLayout);\n\n            // Ensure Z-order prevents bottom layout overlapping\n            chatFlowLayout.BringToFront();\n\n            this.Resize += AISidebarControl_Resize;\n            chatFlowLayout.Resize += (s, e) => UpdateBubbleWidths();\n        }\n\n        private void AISidebarControl_Resize(object sender, EventArgs e)\n        {\n            if (inputPanel != null)\n            {\n                foreach (Control ctrl in inputPanel.Controls)\n                {\n                    if (ctrl is Panel p) // txtWrapper\n                    {\n                        p.Width = inputPanel.Width - 20;\n                    }\n                    else if (ctrl == btnSend)\n                    {\n                        btnSend.Left = inputPanel.Width - 75;\n                    }\n                }\n            }\n            UpdateBubbleWidths();\n        }\n\n        private void BtnSettings_Click(object sender, EventArgs e)\n        {\n            using (var settingsForm = new AISettingsForm(currentConfig))\n            {\n                if (settingsForm.ShowDialog(this) == DialogResult.OK)\n                {\n                    settingsForm.UpdateConfig(currentConfig);\n                    SaveConfig();\n\n                    // Update the active system message in the conversation history\n                    if (conversationHistory.Count > 0 && conversationHistory[0].Role == \"system\")\n                    {\n                        conversationHistory[0].Content = currentConfig.SystemPrompt;\n                    }\n                }\n            }\n        }\n\n        private void InitializeSystemMessage()\n        {\n            string systemPrompt = currentConfig.SystemPrompt;\n            if (string.IsNullOrWhiteSpace(systemPrompt))\n            {\n                systemPrompt = GetDefaultSystemPrompt();\n                currentConfig.SystemPrompt = systemPrompt;\n            }\n\n            conversationHistory.Add(new ChatMessage { Role = \"system\", Content = systemPrompt });\n            AppendBubble(\"你好！我是你的 SlideSCI AI 助手。我可以执行以下命令：\\n1. 把选中的文字或文本框颜色改为红色、蓝色等。\\n2. 添加各种形状（矩形、圆形等）。\\n3. 新增一页空白幻灯片。\\n4. 将幻灯片中的指定文字进行查找替换。\\n\\n请在下方输入你的指令！\", isUser: false, isSystem: false);\n        }\n\n        public static string GetDefaultSystemPrompt()\n        {\n            return @\"你是一个PowerPoint AI助手，你可以通过编写和执行C#代码来帮用户操作当前幻灯片。\n你有调用 `execute_csharp_code` 工具的能力。\n当你需要对幻灯片进行操作时（如修改文字颜色、添加形状、新建页面、替换文字等），你应该写C#代码，然后通过调用 `execute_csharp_code` 来执行。\n\n编写C#代码时请遵守以下规则：\n1. 代码会在一个包含 `PowerPoint.Application Application` 参数的方法体内执行：`public static void Run(PowerPoint.Application Application)`。\n2. 已经默认导入了以下命名空间，请勿再在代码中写 using 声明：\n   - System\n   - System.Collections.Generic\n   - System.Linq\n   - System.Drawing\n   - System.Windows.Forms\n   - Microsoft.Office.Interop.PowerPoint (别名为 PowerPoint)\n   - Microsoft.Office.Core (别名为 Office)\n3. 安全获取当前幻灯片对象 (Slide) 的方法：\n   PowerPoint.Slide slide = null;\n   try { slide = Application.ActiveWindow.View.Slide as PowerPoint.Slide; } catch {}\n   if (slide == null) {\n       try { slide = Application.ActivePresentation.Slides[Application.ActiveWindow.Selection.SlideRange[1].SlideIndex]; } catch {}\n   }\n   if (slide == null) {\n       throw new Exception(\"\"没有找到活动的幻灯片，请确保PPT处于正常视图。\"\");\n   }\n4. 新增幻灯片页面请直接对 Application.ActivePresentation.Slides 进行 Add 或 Add2 操作，例如：\n   var pres = Application.ActivePresentation;\n   pres.Slides.Add(pres.Slides.Count + 1, PowerPoint.PpSlideLayout.ppLayoutBlank);\n5. 操作文字颜色时，请使用 `System.Drawing.ColorTranslator.ToOle(Color.Red)` 将颜色转换为 OLE 颜色。例如：\n   shape.TextFrame.TextRange.Font.Color.RGB = ColorTranslator.ToOle(Color.Red);\n6. 插入形状时，第一个参数必须是 `Office.MsoAutoShapeType` 枚举类型（注意：千万不可写错成 `Office.MsoShapeType`，否则会报编译错误）。常用的形状枚举如下：\n   - 矩形：`Office.MsoAutoShapeType.msoShapeRectangle`\n   - 圆角矩形（注意是 Rounded，不是 Round）：`Office.MsoAutoShapeType.msoShapeRoundedRectangle`\n   - 椭圆/圆形：`Office.MsoAutoShapeType.msoShapeOval`\n   示例：`slide.Shapes.AddShape(Office.MsoAutoShapeType.msoShapeRectangle, left, top, width, height)`。位置与尺寸参数皆为 float 类型。\n7. 修改文字内容时，如果需要查找并替换，可以遍历幻灯片中的 Shape 并检查 `shape.HasTextFrame == Office.MsoTriState.msoTrue && shape.TextFrame.HasText == Office.MsoTriState.msoTrue`。\n8. 请尽量编写健壮的代码，用 try-catch 包裹可能出错的地方，遇到不支持的操作时抛出异常。\n\n【核心PPT设计审美与排版规范（PPT Aesthetics & Layout Design Rules）】\n为了确保AI添加的PPT样式美观、专业且符合现代高端设计规范，请在编写代码生成/修改PPT内容时，严格遵守以下排版与审美原则：\n\n1. 配色系统与 60-30-10 黄金比例：\n   - 禁止在没有用户明确要求的情况下使用刺眼的高饱和度纯原色（例如纯红 Color.Red、纯蓝 Color.Blue、纯绿 Color.Green、纯黄 Color.Yellow）。这会让 PPT 显得极不专业。\n   - 使用成熟、高对比度且优雅的经典主题配色（使用 Color.FromArgb 定义颜色，然后使用 ColorTranslator.ToOle 转换）：\n     * 极简科技蓝主题：\n       - 主背景/主色：浅灰白 Color.FromArgb(248, 249, 250) 或 极深蓝 Color.FromArgb(10, 34, 64)\n       - 辅助色/卡片背景：浅天蓝 Color.FromArgb(232, 240, 254) 或 经典蓝 Color.FromArgb(26, 115, 232)\n       - 点缀强调色（10%）：温暖橙/金色 Color.FromArgb(245, 166, 35) 或 珊瑚红 Color.FromArgb(234, 67, 53)\n     * 现代商务炭黑主题：\n       - 主色：炭黑色 Color.FromArgb(43, 43, 43)\n       - 辅助色：浅灰色 Color.FromArgb(240, 240, 240)\n       - 点缀色：青/湖蓝色 Color.FromArgb(0, 168, 181)\n     * 暖调人文/学术主题：\n       - 主色：深林绿 Color.FromArgb(27, 67, 50)\n       - 辅助色：柔和米色 Color.FromArgb(245, 242, 235)\n       - 点缀色：赤陶红/土黄 Color.FromArgb(190, 130, 60)\n   - 遵守 60-30-10 比例：背景占 60% 视觉面积，文字/卡片容器等次要元素占 30%，画龙点睛的重点高亮（如关键数字、重点结论词、边框线装饰）占 10%。\n\n2. 视觉层级与字号梯度（Visual Hierarchy & Text Scales）：\n   - 建立清晰鲜明的字号差，中文默认使用“微软雅黑” (Microsoft YaHei)，英文默认使用“Segoe UI”：\n     * 幻灯片大标题（Slide Title）：36pt - 44pt，粗体 (Bold)，深色高对比度。\n     * 章节/卡片小标题（Card Header）：20pt - 24pt，粗体。\n     * 正文内容（Body Text）：14pt - 18pt，常规体 (Regular)，中等对比度（如深灰）。\n     * 关键数据/大数字（Big Stat/Metric）：48pt - 72pt 粗体，可搭配 12pt 的解释性小字。\n   - 为确保文字排版完美，对所有新创建的文本框设置以下属性以防文本溢出或不对齐：\n     * shape.TextFrame.WordWrap = Office.MsoTriState.msoTrue; // 开启自动换行\n     * 适当清除或缩小默认内边距：\n       shape.TextFrame.MarginLeft = 10f;\n       shape.TextFrame.MarginRight = 10f;\n       shape.TextFrame.MarginTop = 10f;\n       shape.TextFrame.MarginBottom = 10f;\n\n3. 负空间与留白（Negative Space & Whitespace）：\n   - 不要把幻灯片塞满！页面必须保留至少 30% - 40% 的空白区域，让观众的眼睛有呼吸的空间。\n   - 绝不允许使用大段文字，请将文字提炼为短句，以列表或卡片形式展现。\n\n4. 动态网格布局与防重叠（Dynamic Grid Layout & Math Positioning）：\n   - 永远通过代码动态获取幻灯片的物理大小，并在此基础上进行百分比定位或网格分栏计算，严禁使用写死的绝对坐标导致在不同比例的PPT中排版错乱：\n     float slideWidth = Application.ActivePresentation.PageSetup.SlideWidth;\n     float slideHeight = Application.ActivePresentation.PageSetup.SlideHeight;\n   - 留出四周安全边距（Margin，通常设为 slideWidth * 0.06f 与 slideHeight * 0.08f）。\n   - 如果需要展示并列的多个观点，应自动计算分栏位置：\n     * 两栏布局：左栏占宽 45%，右栏占宽 45%，中间留空 10%。\n     * 三分栏卡片布局示例：\n       float margin = slideWidth * 0.05f;\n       float availableWidth = slideWidth - 2 * margin;\n       float gap = 20f; // 卡片间距\n       float cardWidth = (availableWidth - 2 * gap) / 3f;\n       float cardHeight = slideHeight * 0.5f;\n       float top = slideHeight * 0.3f;\n       for (int i = 0; i < 3; i++) {\n           float left = margin + i * (cardWidth + gap);\n           // 在 left, top, cardWidth, cardHeight 处绘制卡片容器\n       }\n   - 通过数学计算绝对保证生成的文本框、容器形状之间不会重叠。\n\n5. 扁平化容器卡片化（Flat Card-Based Design）：\n   - 列表或并列观点应使用“浅色卡片”作为容器装载，卡片背景填充非常浅的颜色（如 RGB: 245, 245, 245），并且必须去掉边框轮廓以符合现代扁平化审美：\n     cardShape.Line.Visible = Office.MsoTriState.msoFalse;\n     cardShape.Fill.ForeColor.RGB = ColorTranslator.ToOle(Color.FromArgb(245, 245, 245));\n   - 在卡片之上叠放文字形状时，通过 Y 坐标偏移（如 cardTop + 15 放置标题，cardTop + 45 放置正文）使排版整洁大方。\n   - 尽量使用无轮廓（`Line.Visible = msoFalse`）的形状，如果使用线条，应保持极细（`Line.Weight = 1.0f`）且使用温和的淡灰色。\";\n        }\n\n        private void TxtInput_KeyDown(object sender, KeyEventArgs e)\n        {\n            if (e.KeyCode == Keys.Enter && !e.Shift)\n            {\n                e.SuppressKeyPress = true; // Prevent newline\n                btnSend.PerformClick();\n            }\n        }\n\n        private void ClearChat()\n        {\n            chatFlowLayout.Controls.Clear();\n            conversationHistory.Clear();\n            InitializeSystemMessage();\n        }\n\n        private void AppendBubble(string text, bool isUser, bool isSystem, bool isError = false)\n        {\n            // Strip emojis from the text to prevent square box characters in RichTextBox\n            text = StripEmojis(text);\n\n            ChatRowPanel row = new ChatRowPanel(text, isUser, isSystem, isError, chatFlowLayout.Width - 25);\n            chatFlowLayout.Controls.Add(row);\n            \n            chatFlowLayout.PerformLayout();\n            chatFlowLayout.ScrollControlIntoView(row);\n            \n            try\n            {\n                chatFlowLayout.VerticalScroll.Value = chatFlowLayout.VerticalScroll.Maximum;\n            }\n            catch {}\n        }\n\n        private static string StripEmojis(string text)\n        {\n            if (string.IsNullOrEmpty(text)) return text;\n            try\n            {\n                // Remove surrogate pairs and symbol ranges (emojis, icons, private use areas)\n                return Regex.Replace(text, @\"\\p{Cs}|\\p{So}|\\p{Cn}\", \"\");\n            }\n            catch\n            {\n                return text;\n            }\n        }\n\n        private void UpdateBubbleWidths()\n        {\n            if (chatFlowLayout == null) return;\n            chatFlowLayout.SuspendLayout();\n            int targetWidth = chatFlowLayout.Width - 25;\n            if (targetWidth < 100) targetWidth = 100;\n            foreach (Control ctrl in chatFlowLayout.Controls)\n            {\n                if (ctrl is ChatRowPanel row)\n                {\n                    row.UpdateWidth(targetWidth);\n                }\n            }\n            chatFlowLayout.ResumeLayout(true);\n        }\n\n        private async Task HandleSendAsync()\n        {\n            if (isGenerating)\n            {\n                cts?.Cancel();\n                return;\n            }\n\n            string message = txtInput.Text.Trim();\n            if (string.IsNullOrEmpty(message)) return;\n\n            if (string.IsNullOrEmpty(currentConfig.ApiKey))\n            {\n                MessageBox.Show(\"请先配置 API Key！\", \"提示\", MessageBoxButtons.OK, MessageBoxIcon.Warning);\n                BtnSettings_Click(null, null);\n                return;\n            }\n\n            txtInput.Text = \"\";\n            AppendBubble(message, isUser: true, isSystem: false);\n            conversationHistory.Add(new ChatMessage { Role = \"user\", Content = message });\n\n            isGenerating = true;\n            btnSend.Text = \"停止\";\n            btnSend.BackColor = Color.FromArgb(209, 52, 56);\n            txtInput.Enabled = false;\n            btnClear.Enabled = false;\n            btnSettings.Enabled = false;\n\n            cts = new CancellationTokenSource();\n\n            try\n            {\n                await RunAgentLoopAsync(cts.Token);\n            }\n            catch (OperationCanceledException)\n            {\n                AppendBubble(\"[已终止]: 用户中止了 AI 响应。\", isUser: false, isSystem: true, isError: false);\n            }\n            catch (Exception ex)\n            {\n                AppendBubble($\"[AI 调用出错]:\\n{ex.ToString()}\", isUser: false, isSystem: true, isError: true);\n            }\n            finally\n            {\n                isGenerating = false;\n                btnSend.Text = \"发送\";\n                btnSend.BackColor = Color.FromArgb(0, 120, 212);\n                \n                txtInput.Enabled = true;\n                btnClear.Enabled = true;\n                btnSettings.Enabled = true;\n\n                cts?.Dispose();\n                cts = null;\n            }\n        }\n\n        private async Task RunAgentLoopAsync(CancellationToken token)\n        {\n            int maxIterations = 5;\n            int currentIteration = 0;\n\n            var tools = new List<ChatTool>\n            {\n                new ChatTool\n                {\n                    Function = new ToolFunction\n                    {\n                        Name = \"execute_csharp_code\",\n                        Description = \"在幻灯片中动态编译并执行C#代码来操作系统。代码将被放置在 `public static void Run(PowerPoint.Application Application)` 方法体中运行。你可以使用任何 PowerPoint API 进行操作。\",\n                        Parameters = new ToolParameters\n                        {\n                            Properties = new Dictionary<string, object>\n                            {\n                                {\n                                    \"code\", new Dictionary<string, string>\n                                    {\n                                        { \"type\", \"string\" },\n                                        { \"description\", \"要执行的 C# 语句。必须使用合法的 C# 语法，不用声明 class 或 method，只写方法体内部的执行代码。\" }\n                                    }\n                                }\n                            },\n                            Required = new List<string> { \"code\" }\n                        }\n                    }\n                }\n            };\n\n            while (currentIteration < maxIterations)\n            {\n                token.ThrowIfCancellationRequested();\n                currentIteration++;\n\n                var request = new ChatRequest\n                {\n                    Model = currentConfig.Model,\n                    Messages = conversationHistory,\n                    Tools = tools,\n                    ToolChoice = \"auto\"\n                };\n\n                string requestJson = JsonConvert.SerializeObject(request);\n                var content = new StringContent(requestJson, Encoding.UTF8, \"application/json\");\n\n                httpClient.DefaultRequestHeaders.Clear();\n                httpClient.DefaultRequestHeaders.Add(\"Authorization\", $\"Bearer {currentConfig.ApiKey}\");\n\n                string url = currentConfig.ApiUrl.TrimEnd('/') + \"/chat/completions\";\n                \n                HttpResponseMessage response;\n                try\n                {\n                    response = await httpClient.PostAsync(url, content, token);\n                }\n                catch (OperationCanceledException)\n                {\n                    throw;\n                }\n                catch (Exception ex)\n                {\n                    throw new Exception($\"无法连接到 AI 服务，网络连接异常: {ex.Message}\\n请求地址: {url}\\n\\n详细信息:\\n{ex.ToString()}\");\n                }\n\n                token.ThrowIfCancellationRequested();\n                string responseJson = await response.Content.ReadAsStringAsync();\n                if (!response.IsSuccessStatusCode)\n                {\n                    string errorDetails = \"\";\n                    try\n                    {\n                        var errRes = JsonConvert.DeserializeObject<ChatResponse>(responseJson);\n                        errorDetails = errRes?.Error?.Message;\n                    }\n                    catch {}\n                    if (string.IsNullOrEmpty(errorDetails))\n                    {\n                        errorDetails = responseJson;\n                    }\n                    throw new Exception($\"API 请求失败 (HTTP {response.StatusCode} - {response.ReasonPhrase}):\\n{errorDetails}\");\n                }\n\n                var chatRes = JsonConvert.DeserializeObject<ChatResponse>(responseJson);\n                if (chatRes == null || chatRes.Choices == null || chatRes.Choices.Count == 0)\n                {\n                    throw new Exception(\"API 返回了空响应，无法处理。\");\n                }\n\n                var choiceMessage = chatRes.Choices[0].Message;\n                conversationHistory.Add(choiceMessage);\n\n                if (!string.IsNullOrEmpty(choiceMessage.Content))\n                {\n                    AppendBubble(choiceMessage.Content, isUser: false, isSystem: false);\n                }\n\n                if (choiceMessage.ToolCalls != null && choiceMessage.ToolCalls.Count > 0)\n                {\n                    token.ThrowIfCancellationRequested();\n                    foreach (var toolCall in choiceMessage.ToolCalls)\n                    {\n                        if (toolCall.Function.Name == \"execute_csharp_code\")\n                        {\n                            string code = \"\";\n                            try\n                            {\n                                var args = JsonConvert.DeserializeObject<Dictionary<string, string>>(toolCall.Function.Arguments);\n                                if (args != null && args.TryGetValue(\"code\", out string argCode))\n                                {\n                                    code = argCode;\n                                }\n                            }\n                            catch (Exception ex)\n                            {\n                                string toolErr = $\"解析参数失败: {ex.Message}\";\n                                conversationHistory.Add(new ChatMessage\n                                {\n                                    Role = \"tool\",\n                                    Name = \"execute_csharp_code\",\n                                    Content = toolErr,\n                                    ToolCallId = toolCall.Id\n                                });\n                                AppendBubble($\"[工具调用解析失败]\\n{toolErr}\", isUser: false, isSystem: true, isError: true);\n                                continue;\n                            }\n\n                            AppendBubble($\"[AI 请求执行 C# 代码]:\\n{code}\", isUser: false, isSystem: true);\n\n                            string runResult = \"\";\n                            try\n                            {\n                                runResult = CSharpExecutor.Execute(code, Globals.ThisAddIn.Application);\n                            }\n                            catch (Exception ex)\n                            {\n                                runResult = $\"Critical Runtime Error: {ex.Message}\";\n                            }\n\n                            conversationHistory.Add(new ChatMessage\n                            {\n                                Role = \"tool\",\n                                Name = \"execute_csharp_code\",\n                                Content = runResult,\n                                ToolCallId = toolCall.Id\n                            });\n\n                            if (runResult == \"Success\")\n                            {\n                                AppendBubble(\"[执行结果]: 成功！\", isUser: false, isSystem: true);\n                            }\n                            else\n                            {\n                                AppendBubble($\"[执行结果]: 失败！\\n{runResult}\", isUser: false, isSystem: true, isError: true);\n                            }\n                        }\n                    }\n                    continue;\n                }\n\n                break;\n            }\n        }\n\n        public static Bitmap CreateIcon(string type, int size, Color color)\n        {\n            Bitmap bmp = new Bitmap(size, size);\n            using (Graphics g = Graphics.FromImage(bmp))\n            {\n                g.SmoothingMode = SmoothingMode.AntiAlias;\n                g.Clear(Color.Transparent);\n                using (Pen pen = new Pen(color, 1.8f))\n                using (Brush brush = new SolidBrush(color))\n                {\n                    if (type == \"settings\")\n                    {\n                        int r1 = size / 2 - 1;\n                        int r2 = size / 2 - 4;\n                        int cx = size / 2;\n                        int cy = size / 2;\n                        g.DrawEllipse(pen, cx - r2, cy - r2, r2 * 2, r2 * 2);\n                        \n                        for (int i = 0; i < 8; i++)\n                        {\n                            double angle = i * Math.PI / 4;\n                            float x1 = (float)(cx + r2 * Math.Cos(angle));\n                            float y1 = (float)(cy + r2 * Math.Sin(angle));\n                            float x2 = (float)(cx + r1 * Math.Cos(angle));\n                            float y2 = (float)(cy + r1 * Math.Sin(angle));\n                            g.DrawLine(pen, x1, y1, x2, y2);\n                        }\n                    }\n                    else if (type == \"trash\")\n                    {\n                        g.DrawRectangle(pen, 4, 5, size - 9, size - 8);\n                        g.DrawLine(pen, 2, 3, size - 3, 3);\n                        g.DrawLine(pen, 6, 1, size - 7, 1);\n                        g.DrawLine(pen, 7, 7, 7, size - 5);\n                        g.DrawLine(pen, size / 2, 7, size / 2, size - 5);\n                        g.DrawLine(pen, size - 8, 7, size - 8, size - 5);\n                    }\n                }\n            }\n            return bmp;\n        }\n    }\n\n    // --- Settings Dialog Form ---\n    public class AISettingsForm : Form\n    {\n        private ComboBox cmbPresets;\n        private Button btnAddPreset;\n        private Button btnDeletePreset;\n        private TextBox txtPresetName;\n        private TextBox txtApiUrl;\n        private TextBox txtApiKey;\n        private CheckBox chkShowKey;\n        private TextBox txtModel;\n        private TextBox txtSystemPrompt;\n        private Button btnSave;\n        private Button btnCancel;\n        private Button btnRestoreDefault;\n        private AIConfig config;\n        private List<AIPreset> tempPresets;\n        private string activePresetName;\n        private AIPreset currentEditingPreset = null;\n\n        public AISettingsForm(AIConfig currentConfig)\n        {\n            this.config = currentConfig;\n            this.tempPresets = new List<AIPreset>();\n            foreach (var p in currentConfig.Presets)\n                tempPresets.Add(new AIPreset { Name = p.Name, ApiUrl = p.ApiUrl, ApiKey = p.ApiKey, Model = p.Model, SystemPrompt = p.SystemPrompt });\n            this.activePresetName = currentConfig.CurrentPresetName;\n            InitializeComponent();\n            LoadPresetsToCombo();\n        }\n\n        private void InitializeComponent()\n        {\n            this.Text = \"AI 助手设置\";\n            this.Size = new Size(620, 580);\n            this.FormBorderStyle = FormBorderStyle.FixedDialog;\n            this.MaximizeBox = false;\n            this.MinimizeBox = false;\n            this.StartPosition = FormStartPosition.CenterParent;\n            this.Font = new Font(\"Microsoft YaHei\", 9F);\n            this.BackColor = Color.White;\n\n            Label lblSelectPreset = new Label { Text = \"选择预设:\", Location = new Point(15, 20), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            cmbPresets = new ComboBox { DropDownStyle = ComboBoxStyle.DropDownList, Location = new Point(100, 20), Width = 280, Height = 24 };\n\n            btnAddPreset = new Button { Text = \"新增\", Location = new Point(390, 18), Width = 90, Height = 28, BackColor = Color.FromArgb(240, 240, 240), FlatStyle = FlatStyle.Flat };\n            btnAddPreset.FlatAppearance.BorderColor = Color.LightGray;\n            btnDeletePreset = new Button { Text = \"删除\", Location = new Point(490, 18), Width = 90, Height = 28, BackColor = Color.FromArgb(240, 240, 240), FlatStyle = FlatStyle.Flat };\n            btnDeletePreset.FlatAppearance.BorderColor = Color.LightGray;\n\n            Label lblPresetName = new Label { Text = \"预设名称:\", Location = new Point(15, 60), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtPresetName = new TextBox { Location = new Point(100, 60), Width = 480 };\n            txtPresetName.TextChanged += TxtPresetName_TextChanged;\n\n            Label lblUrl = new Label { Text = \"API 地址:\", Location = new Point(15, 100), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtApiUrl = new TextBox { Location = new Point(100, 100), Width = 480 };\n\n            Label lblKey = new Label { Text = \"API Key:\", Location = new Point(15, 140), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtApiKey = new TextBox { Location = new Point(100, 140), Width = 400, PasswordChar = '*' };\n            chkShowKey = new CheckBox { Text = \"显示\", Location = new Point(510, 140), Width = 70, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            chkShowKey.CheckedChanged += (s, e) => { txtApiKey.PasswordChar = chkShowKey.Checked ? '\\0' : '*'; };\n\n            Label lblModel = new Label { Text = \"模型名称:\", Location = new Point(15, 180), Width = 80, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtModel = new TextBox { Location = new Point(100, 180), Width = 480 };\n\n            Label lblPrompt = new Label { Text = \"系统提示词:\", Location = new Point(15, 220), Width = 85, Height = 22, TextAlign = ContentAlignment.MiddleLeft };\n            txtSystemPrompt = new TextBox { Location = new Point(100, 220), Width = 480, Height = 240, Multiline = true, ScrollBars = ScrollBars.Vertical, Font = new Font(\"Microsoft YaHei\", 9F) };\n\n            btnRestoreDefault = new Button { Text = \"恢复默认提示词\", Location = new Point(100, 485), Width = 150, Height = 28, FlatStyle = FlatStyle.Flat };\n            btnRestoreDefault.FlatAppearance.BorderColor = Color.LightGray;\n            btnRestoreDefault.Click += (s, e) => { txtSystemPrompt.Text = AISidebarControl.GetDefaultSystemPrompt(); };\n\n            btnSave = new Button { Text = \"保存\", DialogResult = DialogResult.OK, Location = new Point(380, 485), Width = 90, Height = 28, BackColor = Color.FromArgb(0, 120, 212), ForeColor = Color.White, FlatStyle = FlatStyle.Flat };\n            btnSave.FlatAppearance.BorderSize = 0;\n            btnCancel = new Button { Text = \"取消\", DialogResult = DialogResult.Cancel, Location = new Point(490, 485), Width = 90, Height = 28, FlatStyle = FlatStyle.Flat };\n            btnCancel.FlatAppearance.BorderColor = Color.LightGray;\n\n            this.Controls.AddRange(new Control[] {\n                lblSelectPreset, cmbPresets, btnAddPreset, btnDeletePreset,\n                lblPresetName, txtPresetName, lblUrl, txtApiUrl,\n                lblKey, txtApiKey, chkShowKey, lblModel, txtModel,\n                lblPrompt, txtSystemPrompt, btnRestoreDefault, btnSave, btnCancel\n            });\n            this.AcceptButton = btnSave;\n            this.CancelButton = btnCancel;\n            btnAddPreset.Click += BtnAddPreset_Click;\n            btnDeletePreset.Click += BtnDeletePreset_Click;\n        }\n\n        private void LoadPresetsToCombo()\n        {\n            cmbPresets.SelectedIndexChanged -= CmbPresets_SelectedIndexChanged;\n            cmbPresets.DataSource = null;\n            cmbPresets.DataSource = tempPresets;\n            cmbPresets.DisplayMember = \"Name\";\n            int idx = tempPresets.FindIndex(p => p.Name == activePresetName);\n            if (idx < 0 && tempPresets.Count > 0) idx = 0;\n            cmbPresets.SelectedIndex = idx;\n            if (idx >= 0) { LoadPresetToFields(tempPresets[idx]); activePresetName = tempPresets[idx].Name; }\n            cmbPresets.SelectedIndexChanged += CmbPresets_SelectedIndexChanged;\n        }\n\n        private void SaveCurrentPresetEdits()\n        {\n            if (currentEditingPreset != null)\n            {\n                currentEditingPreset.Name = txtPresetName.Text.Trim();\n                currentEditingPreset.ApiUrl = txtApiUrl.Text.Trim();\n                currentEditingPreset.ApiKey = txtApiKey.Text.Trim();\n                currentEditingPreset.Model = txtModel.Text.Trim();\n                currentEditingPreset.SystemPrompt = txtSystemPrompt.Text;\n            }\n        }\n\n        private void LoadPresetToFields(AIPreset preset)\n        {\n            currentEditingPreset = preset;\n            if (preset != null)\n            {\n                txtPresetName.Text = preset.Name;\n                txtApiUrl.Text = preset.ApiUrl;\n                txtApiKey.Text = preset.ApiKey;\n                txtModel.Text = preset.Model;\n                txtSystemPrompt.Text = preset.SystemPrompt;\n            }\n        }\n\n        private void CmbPresets_SelectedIndexChanged(object sender, EventArgs e)\n        {\n            SaveCurrentPresetEdits();\n            if (cmbPresets.SelectedIndex >= 0)\n            {\n                var selected = cmbPresets.SelectedItem as AIPreset;\n                LoadPresetToFields(selected);\n                this.activePresetName = selected?.Name ?? \"\";\n            }\n        }\n\n        private void TxtPresetName_TextChanged(object sender, EventArgs e)\n        {\n            if (currentEditingPreset != null && cmbPresets.SelectedItem == currentEditingPreset)\n            {\n                string newName = txtPresetName.Text.Trim();\n                if (!string.IsNullOrEmpty(newName) && currentEditingPreset.Name != newName)\n                {\n                    currentEditingPreset.Name = newName;\n                    int idx = cmbPresets.SelectedIndex;\n                    cmbPresets.SelectedIndexChanged -= CmbPresets_SelectedIndexChanged;\n                    cmbPresets.DataSource = null;\n                    cmbPresets.DataSource = tempPresets;\n                    cmbPresets.DisplayMember = \"Name\";\n                    cmbPresets.SelectedIndex = idx;\n                    cmbPresets.SelectedIndexChanged += CmbPresets_SelectedIndexChanged;\n                }\n            }\n        }\n\n        private void BtnAddPreset_Click(object sender, EventArgs e)\n        {\n            SaveCurrentPresetEdits();\n            int count = 1;\n            string newName = \"New Preset\";\n            while (tempPresets.Exists(p => p.Name == $\"{newName} {count}\")) count++;\n            string finalName = $\"{newName} {count}\";\n            var newPreset = new AIPreset { Name = finalName, ApiUrl = \"https://api.openai.com/v1\", ApiKey = \"\", Model = \"gpt-4o\", SystemPrompt = AISidebarControl.GetDefaultSystemPrompt() };\n            tempPresets.Add(newPreset);\n            activePresetName = finalName;\n            LoadPresetsToCombo();\n        }\n\n        private void BtnDeletePreset_Click(object sender, EventArgs e)\n        {\n            if (tempPresets.Count <= 1) { MessageBox.Show(\"必须保留至少一个预设！\", \"提示\", MessageBoxButtons.OK, MessageBoxIcon.Warning); return; }\n            if (cmbPresets.SelectedItem is AIPreset selected)\n            {\n                if (MessageBox.Show($\"确定删除预设 '{selected.Name}' 吗？\", \"确认删除\", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)\n                {\n                    tempPresets.Remove(selected);\n                    currentEditingPreset = null;\n                    activePresetName = tempPresets[0].Name;\n                    LoadPresetsToCombo();\n                }\n            }\n        }\n\n        public void UpdateConfig(AIConfig targetConfig)\n        {\n            SaveCurrentPresetEdits();\n            targetConfig.Presets = this.tempPresets;\n            targetConfig.CurrentPresetName = this.activePresetName;\n        }\n    }\n\n    // --- Data Models for API ---\n    public class AIPreset\n    {\n        public string Name { get; set; } = \"Default\";\n        public string ApiUrl { get; set; } = \"https://api.openai.com/v1\";\n        public string ApiKey { get; set; } = \"\";\n        public string Model { get; set; } = \"gpt-4o\";\n        public string SystemPrompt { get; set; } = \"\";\n        public override string ToString() => Name;\n    }\n\n    public class AIConfig\n    {\n        public List<AIPreset> Presets { get; set; } = new List<AIPreset>();\n        public string CurrentPresetName { get; set; } = \"\";\n\n        [JsonIgnore]\n        public AIPreset CurrentPreset\n        {\n            get\n            {\n                if (Presets == null || Presets.Count == 0)\n                {\n                    Presets = new List<AIPreset> { new AIPreset { Name = \"Default\" } };\n                    CurrentPresetName = \"Default\";\n                }\n                var active = Presets.Find(p => p.Name == CurrentPresetName);\n                if (active == null) { active = Presets[0]; CurrentPresetName = active.Name; }\n                return active;\n            }\n        }\n\n        [JsonIgnore] public string ApiUrl { get => CurrentPreset.ApiUrl; set => CurrentPreset.ApiUrl = value; }\n        [JsonIgnore] public string ApiKey { get => CurrentPreset.ApiKey; set => CurrentPreset.ApiKey = value; }\n        [JsonIgnore] public string Model { get => CurrentPreset.Model; set => CurrentPreset.Model = value; }\n        [JsonIgnore] public string SystemPrompt { get => CurrentPreset.SystemPrompt; set => CurrentPreset.SystemPrompt = value; }\n    }\n\n    public class ChatRequest\n    {\n        [JsonProperty(\"model\")]\n        public string Model { get; set; }\n        [JsonProperty(\"messages\")]\n        public List<ChatMessage> Messages { get; set; }\n        [JsonProperty(\"tools\", NullValueHandling = NullValueHandling.Ignore)]\n        public List<ChatTool> Tools { get; set; }\n        [JsonProperty(\"tool_choice\", NullValueHandling = NullValueHandling.Ignore)]\n        public string ToolChoice { get; set; }\n    }\n\n    public class ChatMessage\n    {\n        [JsonProperty(\"role\")]\n        public string Role { get; set; }\n        [JsonProperty(\"content\", NullValueHandling = NullValueHandling.Ignore)]\n        public string Content { get; set; }\n        [JsonProperty(\"reasoning_content\", NullValueHandling = NullValueHandling.Ignore)]\n        public string ReasoningContent { get; set; }\n        [JsonProperty(\"tool_calls\", NullValueHandling = NullValueHandling.Ignore)]\n        public List<ToolCall> ToolCalls { get; set; }\n        [JsonProperty(\"tool_call_id\", NullValueHandling = NullValueHandling.Ignore)]\n        public string ToolCallId { get; set; }\n        [JsonProperty(\"name\", NullValueHandling = NullValueHandling.Ignore)]\n        public string Name { get; set; }\n    }\n\n    public class ChatTool\n    {\n        [JsonProperty(\"type\")]\n        public string Type { get; set; } = \"function\";\n        [JsonProperty(\"function\")]\n        public ToolFunction Function { get; set; }\n    }\n\n    public class ToolFunction\n    {\n        [JsonProperty(\"name\")]\n        public string Name { get; set; }\n        [JsonProperty(\"description\")]\n        public string Description { get; set; }\n        [JsonProperty(\"parameters\")]\n        public ToolParameters Parameters { get; set; }\n    }\n\n    public class ToolParameters\n    {\n        [JsonProperty(\"type\")]\n        public string Type { get; set; } = \"object\";\n        [JsonProperty(\"properties\")]\n        public Dictionary<string, object> Properties { get; set; }\n        [JsonProperty(\"required\")]\n        public List<string> Required { get; set; }\n    }\n\n    public class ToolCall\n    {\n        [JsonProperty(\"id\")]\n        public string Id { get; set; }\n        [JsonProperty(\"type\")]\n        public string Type { get; set; }\n        [JsonProperty(\"function\")]\n        public ToolCallFunction Function { get; set; }\n    }\n\n    public class ToolCallFunction\n    {\n        [JsonProperty(\"name\")]\n        public string Name { get; set; }\n        [JsonProperty(\"arguments\")]\n        public string Arguments { get; set; }\n    }\n\n    public class ChatResponse\n    {\n        [JsonProperty(\"choices\")]\n        public List<ChatChoice> Choices { get; set; }\n        [JsonProperty(\"error\")]\n        public ApiError Error { get; set; }\n    }\n\n    public class ChatChoice\n    {\n        [JsonProperty(\"message\")]\n        public ChatMessage Message { get; set; }\n    }\n\n    public class ApiError\n    {\n        [JsonProperty(\"message\")]\n        public string Message { get; set; }\n    }\n\n    // --- Custom UI Controls ---\n    public class ChatRowPanel : Panel\n    {\n        [System.Runtime.InteropServices.DllImport(\"user32.dll\")]\n        private static extern bool HideCaret(IntPtr hWnd);\n\n        private Panel bubblePanel;\n        private RichTextBox rtbText;\n        private bool isUser;\n        private bool isSystem;\n        private bool isError;\n\n        // Collapsible properties\n        private bool isCollapsible = false;\n        private bool isExpanded = false;\n        private string headerText = \"\";\n        private string bodyText = \"\";\n        private Panel headerPanel;\n        private Button btnToggle;\n\n        public ChatRowPanel(string text, bool isUser, bool isSystem, bool isError, int width)\n        {\n            this.isUser = isUser;\n            this.isSystem = isSystem;\n            this.isError = isError;\n            this.Width = width;\n            this.BackColor = Color.Transparent;\n\n            // Check if it is a collapsible code block or output log\n            if (isSystem && (text.StartsWith(\"[AI 请求执行 C# 代码]:\") || text.StartsWith(\"[执行结果]:\")))\n            {\n                int firstNewLine = text.IndexOf('\\n');\n                if (firstNewLine >= 0)\n                {\n                    headerText = text.Substring(0, firstNewLine).TrimEnd(':');\n                    bodyText = text.Substring(firstNewLine + 1);\n                    isCollapsible = !string.IsNullOrWhiteSpace(bodyText);\n                }\n                else\n                {\n                    headerText = text;\n                    bodyText = \"\";\n                    isCollapsible = false;\n                }\n                isExpanded = false; // Collapsed by default\n            }\n\n            bubblePanel = new Panel\n            {\n                BackColor = Color.Transparent,\n                Padding = new Padding(10, 8, 10, 8),\n                AutoSize = false\n            };\n\n            rtbText = new RichTextBox\n            {\n                BorderStyle = BorderStyle.None,\n                ScrollBars = RichTextBoxScrollBars.None,\n                ReadOnly = true,\n                Multiline = true,\n                WordWrap = true,\n                BackColor = Color.White,\n                Font = new Font(\"Microsoft YaHei\", 9F)\n            };\n\n            rtbText.GotFocus += (s, e) => { HideCaret(rtbText.Handle); };\n            rtbText.MouseDown += (s, e) => { HideCaret(rtbText.Handle); };\n\n            if (isCollapsible)\n            {\n                headerPanel = new Panel\n                {\n                    Height = 24,\n                    BackColor = Color.Transparent,\n                    Location = new Point(10, 6)\n                };\n\n                Label lblHeader = new Label\n                {\n                    Text = headerText,\n                    Font = new Font(\"Microsoft YaHei\", 9F, FontStyle.Bold),\n                    ForeColor = isError ? Color.FromArgb(180, 40, 40) : Color.FromArgb(80, 80, 80),\n                    Location = new Point(0, 3),\n                    AutoSize = true\n                };\n                headerPanel.Controls.Add(lblHeader);\n\n                btnToggle = new Button\n                {\n                    Text = \"▶ 展开\",\n                    Font = new Font(\"Microsoft YaHei\", 8F),\n                    FlatStyle = FlatStyle.Flat,\n                    BackColor = Color.Transparent,\n                    ForeColor = Color.FromArgb(0, 120, 212),\n                    Location = new Point(lblHeader.Right + 6, 1),\n                    Width = 48,\n                    Height = 22,\n                    Cursor = Cursors.Hand\n                };\n                btnToggle.FlatAppearance.BorderSize = 0;\n                btnToggle.FlatAppearance.MouseOverBackColor = Color.FromArgb(230, 230, 230);\n                btnToggle.Click += BtnToggle_Click;\n                headerPanel.Controls.Add(btnToggle);\n\n                lblHeader.SizeChanged += (s, e) => { btnToggle.Left = lblHeader.Right + 6; };\n\n                bubblePanel.Controls.Add(headerPanel);\n\n                rtbText.Text = bodyText;\n                rtbText.Font = new Font(\"Consolas\", 8.5F);\n                rtbText.ForeColor = Color.FromArgb(60, 60, 60);\n                rtbText.Location = new Point(10, 32);\n                rtbText.Visible = false;\n\n                bubblePanel.Controls.Add(rtbText);\n            }\n            else\n            {\n                FormatMarkdown(rtbText, text, isUser);\n                rtbText.Location = new Point(10, 8);\n                bubblePanel.Controls.Add(rtbText);\n            }\n\n            bubblePanel.Paint += BubblePanel_Paint;\n            this.Controls.Add(bubblePanel);\n            UpdatePosition(width);\n        }\n\n        private void BtnToggle_Click(object sender, EventArgs e)\n        {\n            isExpanded = !isExpanded;\n            rtbText.Visible = isExpanded;\n            btnToggle.Text = isExpanded ? \"▼ 收起\" : \"▶ 展开\";\n            \n            UpdatePosition(this.Width);\n            \n            if (this.Parent is FlowLayoutPanel flp)\n            {\n                flp.PerformLayout();\n            }\n        }\n\n        private void BubblePanel_Paint(object sender, PaintEventArgs e)\n        {\n            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;\n            Color backColor;\n            if (isError) backColor = Color.FromArgb(253, 231, 233);\n            else if (isSystem) backColor = Color.FromArgb(240, 240, 240);\n            else if (isUser) backColor = Color.FromArgb(0, 120, 212);\n            else backColor = Color.White;\n\n            using (GraphicsPath path = GetRoundedPath(new Rectangle(0, 0, bubblePanel.Width - 1, bubblePanel.Height - 1), 8))\n            using (SolidBrush brush = new SolidBrush(backColor))\n            {\n                e.Graphics.FillPath(brush, path);\n            }\n\n            if (!isUser && !isError)\n            {\n                using (GraphicsPath path = GetRoundedPath(new Rectangle(0, 0, bubblePanel.Width - 1, bubblePanel.Height - 1), 8))\n                using (Pen pen = new Pen(Color.FromArgb(220, 220, 220), 1))\n                {\n                    e.Graphics.DrawPath(pen, path);\n                }\n            }\n        }\n\n        private GraphicsPath GetRoundedPath(Rectangle rect, int radius)\n        {\n            GraphicsPath path = new GraphicsPath();\n            int d = radius * 2;\n            path.AddArc(rect.X, rect.Y, d, d, 180, 90);\n            path.AddArc(rect.Right - d, rect.Y, d, d, 270, 90);\n            path.AddArc(rect.Right - d, rect.Bottom - d, d, d, 0, 90);\n            path.AddArc(rect.X, rect.Bottom - d, d, d, 90, 90);\n            path.CloseFigure();\n            return path;\n        }\n\n        public void UpdateWidth(int width)\n        {\n            this.Width = width;\n            UpdatePosition(width);\n        }\n\n        private void UpdatePosition(int width)\n        {\n            int maxBubbleWidth = Convert.ToInt32(width * 0.85);\n            int innerPaddingWidth = 20;\n\n            int textWidth = maxBubbleWidth - innerPaddingWidth;\n            if (textWidth < 50) textWidth = 50;\n\n            // 1. Calculate the final bubble and RichTextBox widths\n            Size measuredSize = TextRenderer.MeasureText(rtbText.Text, rtbText.Font, new Size(textWidth - 20, 0), TextFormatFlags.WordBreak);\n            \n            int finalBubbleWidth;\n            if (isCollapsible)\n            {\n                finalBubbleWidth = maxBubbleWidth;\n            }\n            else\n            {\n                finalBubbleWidth = Math.Min(measuredSize.Width + innerPaddingWidth + 10, maxBubbleWidth);\n            }\n\n            int finalRtbWidth = finalBubbleWidth - innerPaddingWidth;\n            if (finalRtbWidth < 50) finalRtbWidth = 50;\n\n            rtbText.Width = finalRtbWidth;\n\n            // Force handle creation so GetPositionFromCharIndex is completely accurate\n            var handle = rtbText.Handle;\n\n            // 2. Measure precise text wrapping height natively\n            int calculatedHeight = 0;\n            if (!string.IsNullOrEmpty(rtbText.Text))\n            {\n                Point pos = rtbText.GetPositionFromCharIndex(rtbText.Text.Length - 1);\n                \n                // Fallback if handle isn't fully ready or pos.Y returns 0 unexpectedly for multi-line text\n                if (pos.Y == 0 && rtbText.Text.Contains(\"\\n\"))\n                {\n                    int lineCount = rtbText.Lines.Length;\n                    int listBonus = 0;\n                    foreach (var line in rtbText.Lines)\n                    {\n                        if (line.TrimStart().StartsWith(\"- \") || line.TrimStart().StartsWith(\"* \"))\n                        {\n                            listBonus += 15;\n                        }\n                    }\n                    int boldAndFontPadding = 24 + (lineCount * 4) + listBonus;\n                    calculatedHeight = measuredSize.Height + boldAndFontPadding;\n                }\n                else\n                {\n                    calculatedHeight = pos.Y + rtbText.Font.Height + 16;\n                }\n            }\n\n            // 3. Set control heights and layout bounds\n            if (isCollapsible)\n            {\n                headerPanel.Width = finalRtbWidth;\n                if (isExpanded)\n                {\n                    rtbText.Height = calculatedHeight;\n                    bubblePanel.Width = maxBubbleWidth;\n                    bubblePanel.Height = rtbText.Bottom + 8;\n                }\n                else\n                {\n                    bubblePanel.Width = maxBubbleWidth;\n                    bubblePanel.Height = headerPanel.Bottom + 6;\n                }\n            }\n            else\n            {\n                rtbText.Height = calculatedHeight;\n                bubblePanel.Width = finalBubbleWidth;\n                bubblePanel.Height = rtbText.Height + 16;\n            }\n\n            Color bubbleColor;\n            if (isError) bubbleColor = Color.FromArgb(253, 231, 233);\n            else if (isSystem) bubbleColor = Color.FromArgb(240, 240, 240);\n            else if (isUser) bubbleColor = Color.FromArgb(0, 120, 212);\n            else bubbleColor = Color.White;\n\n            rtbText.BackColor = bubbleColor;\n            rtbText.ForeColor = isUser ? Color.White : Color.FromArgb(33, 33, 33);\n\n            this.Height = bubblePanel.Height + 10;\n\n            if (isUser)\n            {\n                bubblePanel.Left = width - bubblePanel.Width - 5;\n            }\n            else\n            {\n                bubblePanel.Left = 5;\n            }\n            bubblePanel.Top = 5;\n            \n            bubblePanel.Invalidate();\n        }\n\n        private static void FormatMarkdown(RichTextBox rtb, string markdown, bool isUser)\n        {\n            rtb.Text = \"\";\n            rtb.SelectionBullet = false;\n            rtb.SelectionIndent = 0;\n\n            string[] lines = markdown.Split('\\n');\n            for (int l = 0; l < lines.Length; l++)\n            {\n                string line = lines[l];\n                \n                if (line.TrimStart().StartsWith(\"- \") || line.TrimStart().StartsWith(\"* \"))\n                {\n                    int bulletIndex = line.IndexOf('-');\n                    if (bulletIndex < 0) bulletIndex = line.IndexOf('*');\n                    line = line.Substring(bulletIndex + 2);\n                    rtb.SelectionBullet = true;\n                    rtb.SelectionIndent = 12;\n                }\n                else\n                {\n                    rtb.SelectionBullet = false;\n                    rtb.SelectionIndent = 0;\n                }\n\n                int i = 0;\n                while (i < line.Length)\n                {\n                    if (i + 1 < line.Length && line[i] == '*' && line[i + 1] == '*')\n                    {\n                        int next = line.IndexOf(\"**\", i + 2);\n                        if (next >= 0)\n                        {\n                            string boldText = line.Substring(i + 2, next - (i + 2));\n                            rtb.SelectionFont = new Font(rtb.Font, FontStyle.Bold);\n                            rtb.AppendText(boldText);\n                            i = next + 2;\n                        }\n                        else\n                        {\n                            rtb.SelectionFont = new Font(rtb.Font, FontStyle.Regular);\n                            rtb.AppendText(\"**\");\n                            i += 2;\n                        }\n                    }\n                    else if (line[i] == '`')\n                    {\n                        int next = line.IndexOf('`', i + 1);\n                        if (next >= 0)\n                        {\n                            string codeText = line.Substring(i + 1, next - (i + 1));\n                            \n                            rtb.SelectionFont = new Font(\"Consolas\", rtb.Font.Size);\n                            rtb.SelectionBackColor = isUser ? Color.FromArgb(0, 60, 120) : Color.FromArgb(228, 229, 230);\n                            rtb.SelectionColor = isUser ? Color.FromArgb(200, 230, 255) : Color.FromArgb(190, 50, 50);\n\n                            rtb.AppendText(codeText);\n                            \n                            rtb.SelectionBackColor = rtb.BackColor;\n                            rtb.SelectionColor = rtb.ForeColor;\n                            \n                            i = next + 1;\n                        }\n                        else\n                        {\n                            rtb.SelectionFont = new Font(rtb.Font, FontStyle.Regular);\n                            rtb.AppendText(\"`\");\n                            i++;\n                        }\n                    }\n                    else\n                    {\n                        rtb.SelectionFont = new Font(rtb.Font, FontStyle.Regular);\n                        rtb.SelectionColor = isUser ? Color.White : Color.FromArgb(33, 33, 33);\n                        rtb.AppendText(line[i].ToString());\n                        i++;\n                    }\n                }\n\n                if (l < lines.Length - 1)\n                {\n                    rtb.AppendText(Environment.NewLine);\n                }\n            }\n        }\n    }\n}\n"}}}}