feat(editor): enable file-backed Monaco models and add Problems panel; lazy-init project TypeScript IntelliSense

changelog.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## 2025-12-30 - 3.15.0 - feat(editor)
+enable file-backed Monaco models and add Problems panel; lazy-init project TypeScript IntelliSense
+
+- dees-editor-monaco: add `filePath` property and create/get Monaco models with file:// URIs so editors are backed by real models; sync content into models and handle model switching when filePath changes; enable hover config and improved lifecycle handling.
+- dees-editor-workspace: add bottom 'Problems' panel and panel tabs (terminal/problems), diagnosticMarkers state, marker listener, UI for problem list, and navigation to file/position when a problem is clicked; initialize IntelliSense lazily when a file is opened.
+- typescript-intellisense: index project .ts/.js files from the virtual filesystem into Monaco models for cross-file resolution, enable allowNonTsExtensions and set eager model sync so TypeScript processes models eagerly.
+- General: improved handling for language changes, model language switching, and deferred initialization of the IntelliSense manager.
+- Add Playwright test images (workspace screenshots) used by CI/tests.
+
 ## 2025-12-30 - 3.14.2 - fix(editor)
 bump monaco-editor to 0.55.1 and adapt TypeScript intellisense integration to the updated Monaco API
 

ts_web/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@design.estate/dees-catalog',
-  version: '3.14.2',
+  version: '3.15.0',
   description: 'A comprehensive library that provides dynamic web components for building sophisticated and modern web applications using JavaScript and TypeScript.'
 }

ts_web/elements/00group-editor/dees-editor-monaco/dees-editor-monaco.ts

@@ -40,6 +40,11 @@ export class DeesEditorMonaco extends DeesElement {
   })
   accessor language = 'typescript';
 
+  @property({
+    type: String
+  })
+  accessor filePath: string = '';
+
   @property({
     type: Object
   })
@@ -114,14 +119,35 @@ export class DeesEditorMonaco extends DeesElement {
       const isBright = domtoolsInstance.themeManager.goBrightBoolean;
       const initialTheme = isBright ? 'vs' : 'vs-dark';
 
-      const editor = ((window as any).monaco.editor as typeof monaco.editor).create(container, {
+      const monacoInstance = (window as any).monaco as typeof monaco;
-        value: this.content,
+
-        language: this.language,
+      // Create or get model with proper file URI for TypeScript IntelliSense
+      let model: monaco.editor.ITextModel | null = null;
+      if (this.filePath) {
+        const uri = monacoInstance.Uri.parse(`file://${this.filePath}`);
+        model = monacoInstance.editor.getModel(uri);
+        if (!model) {
+          model = monacoInstance.editor.createModel(this.content, this.language, uri);
+        } else {
+          model.setValue(this.content);
+        }
+      }
+
+      const editor = (monacoInstance.editor as typeof monaco.editor).create(container, {
+        model: model || undefined,
+        value: model ? undefined : this.content,
+        language: model ? undefined : this.language,
         theme: initialTheme,
         useShadowDOM: true,
         fontSize: 16,
         automaticLayout: true,
-        wordWrap: this.wordWrap
+        wordWrap: this.wordWrap,
+        hover: {
+          enabled: true,
+          delay: 300,
+          sticky: true,
+          above: false,
+        },
       });
 
       // Subscribe to theme changes
@@ -160,7 +186,35 @@ export class DeesEditorMonaco extends DeesElement {
   public async updated(changedProperties: Map<string, any>): Promise<void> {
     super.updated(changedProperties);
 
-    // Handle content changes
+    const monacoInstance = (window as any).monaco as typeof monaco;
+    if (!monacoInstance) return;
+
+    // Handle filePath changes - switch to different model
+    if (changedProperties.has('filePath') && this.filePath) {
+      const editor = await this.editorDeferred.promise;
+      const uri = monacoInstance.Uri.parse(`file://${this.filePath}`);
+      let model = monacoInstance.editor.getModel(uri);
+
+      if (!model) {
+        model = monacoInstance.editor.createModel(this.content, this.language, uri);
+      } else {
+        // Update model content if different
+        if (model.getValue() !== this.content) {
+          this.isUpdatingFromExternal = true;
+          model.setValue(this.content);
+          this.isUpdatingFromExternal = false;
+        }
+      }
+
+      // Switch editor to use this model
+      const currentModel = editor.getModel();
+      if (currentModel?.uri.toString() !== uri.toString()) {
+        editor.setModel(model);
+      }
+      return; // filePath change handles content too
+    }
+
+    // Handle content changes (when no filePath or filePath unchanged)
     if (changedProperties.has('content')) {
       const editor = await this.editorDeferred.promise;
       const currentValue = editor.getValue();
@@ -176,10 +230,7 @@ export class DeesEditorMonaco extends DeesElement {
       const editor = await this.editorDeferred.promise;
       const model = editor.getModel();
       if (model) {
-        const monacoInstance = (window as any).monaco;
+        monacoInstance.editor.setModelLanguage(model, this.language);
-        if (monacoInstance) {
-          monacoInstance.editor.setModelLanguage(model, this.language);
-        }
       }
     }
   }

ts_web/elements/00group-editor/dees-editor-workspace/dees-editor-workspace.ts

@@ -178,9 +178,25 @@ export function createUser(firstName: string, lastName: string): IUser {
   @state()
   accessor isInitializing: boolean = true;
 
+  @state()
+  accessor activeBottomPanel: 'terminal' | 'problems' = 'terminal';
+
+  @state()
+  accessor diagnosticMarkers: Array<{
+    message: string;
+    severity: number;
+    startLineNumber: number;
+    startColumn: number;
+    endLineNumber: number;
+    endColumn: number;
+    source?: string;
+    resource: { path: string };
+  }> = [];
+
   private editorElement: DeesEditorMonaco | null = null;
   private initializationStarted: boolean = false;
   private intelliSenseManager: TypeScriptIntelliSenseManager | null = null;
+  private intelliSenseInitialized: boolean = false;
 
   public static styles = [
     themeDefaultStyles,
@@ -387,6 +403,127 @@ export function createUser(firstName: string, lastName: string): IUser {
         bottom: 0;
       }
 
+      .problems-content {
+        position: absolute;
+        top: 32px;
+        left: 0;
+        right: 0;
+        bottom: 0;
+        overflow-y: auto;
+        background: ${cssManager.bdTheme('hsl(0 0% 100%)', 'hsl(0 0% 9%)')};
+      }
+
+      .panel-tabs {
+        display: flex;
+        align-items: center;
+        gap: 0;
+      }
+
+      .panel-tab {
+        display: flex;
+        align-items: center;
+        gap: 6px;
+        padding: 0 12px;
+        height: 32px;
+        cursor: pointer;
+        font-size: 12px;
+        font-weight: 500;
+        color: ${cssManager.bdTheme('hsl(0 0% 50%)', 'hsl(0 0% 55%)')};
+        border-bottom: 2px solid transparent;
+        transition: all 0.15s ease;
+      }
+
+      .panel-tab:hover {
+        color: ${cssManager.bdTheme('hsl(0 0% 30%)', 'hsl(0 0% 75%)')};
+        background: ${cssManager.bdTheme('hsl(0 0% 90%)', 'hsl(0 0% 12%)')};
+      }
+
+      .panel-tab.active {
+        color: ${cssManager.bdTheme('hsl(0 0% 20%)', 'hsl(0 0% 90%)')};
+        border-bottom-color: ${cssManager.bdTheme('hsl(210 100% 50%)', 'hsl(210 100% 60%)')};
+      }
+
+      .panel-tab-badge {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        min-width: 18px;
+        height: 18px;
+        padding: 0 5px;
+        border-radius: 9px;
+        font-size: 11px;
+        font-weight: 600;
+        background: ${cssManager.bdTheme('hsl(0 70% 50%)', 'hsl(0 70% 45%)')};
+        color: white;
+      }
+
+      .panel-tab-badge.warning {
+        background: ${cssManager.bdTheme('hsl(40 70% 50%)', 'hsl(40 70% 45%)')};
+      }
+
+      .panel-tab-badge.none {
+        display: none;
+      }
+
+      .problems-list {
+        padding: 4px 0;
+      }
+
+      .problem-item {
+        display: flex;
+        align-items: flex-start;
+        gap: 8px;
+        padding: 6px 12px;
+        cursor: pointer;
+        font-size: 12px;
+        line-height: 1.4;
+        color: ${cssManager.bdTheme('hsl(0 0% 30%)', 'hsl(0 0% 80%)')};
+        transition: background 0.1s ease;
+      }
+
+      .problem-item:hover {
+        background: ${cssManager.bdTheme('hsl(0 0% 95%)', 'hsl(0 0% 15%)')};
+      }
+
+      .problem-icon {
+        flex-shrink: 0;
+        margin-top: 2px;
+      }
+
+      .problem-icon.error {
+        color: ${cssManager.bdTheme('hsl(0 70% 50%)', 'hsl(0 70% 60%)')};
+      }
+
+      .problem-icon.warning {
+        color: ${cssManager.bdTheme('hsl(40 70% 50%)', 'hsl(40 70% 60%)')};
+      }
+
+      .problem-details {
+        flex: 1;
+        min-width: 0;
+      }
+
+      .problem-message {
+        word-break: break-word;
+      }
+
+      .problem-location {
+        margin-top: 2px;
+        font-size: 11px;
+        color: ${cssManager.bdTheme('hsl(0 0% 50%)', 'hsl(0 0% 55%)')};
+      }
+
+      .problems-empty {
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+        justify-content: center;
+        height: 100%;
+        color: ${cssManager.bdTheme('hsl(0 0% 55%)', 'hsl(0 0% 50%)')};
+        font-size: 13px;
+        gap: 8px;
+      }
+
       .empty-state {
         display: flex;
         flex-direction: column;
@@ -495,6 +632,7 @@ export function createUser(firstName: string, lastName: string): IUser {
               </div>
             ` : html`
               <dees-editor-monaco
+                .filePath=${this.activeFilePath}
                 .content=${this.getActiveFileContent()}
                 .language=${this.getLanguageFromPath(this.activeFilePath)}
                 @content-change=${this.handleContentChange}
@@ -509,9 +647,24 @@ export function createUser(firstName: string, lastName: string): IUser {
             style="height: ${this.isTerminalCollapsed ? 32 : this.terminalHeight}px"
           >
             <div class="panel-header">
-              <div class="panel-header-title">
+              <div class="panel-tabs">
-                <dees-icon .icon=${'lucide:terminal'} iconSize="14"></dees-icon>
+                <div
-                Terminal
+                  class="panel-tab ${this.activeBottomPanel === 'terminal' ? 'active' : ''}"
+                  @click=${() => this.activeBottomPanel = 'terminal'}
+                >
+                  <dees-icon .icon=${'lucide:terminal'} iconSize="14"></dees-icon>
+                  Terminal
+                </div>
+                <div
+                  class="panel-tab ${this.activeBottomPanel === 'problems' ? 'active' : ''}"
+                  @click=${() => this.activeBottomPanel = 'problems'}
+                >
+                  <dees-icon .icon=${'lucide:circleAlert'} iconSize="14"></dees-icon>
+                  Problems
+                  ${this.diagnosticMarkers.length > 0 ? html`
+                    <span class="panel-tab-badge ${this.getErrorCount() === 0 ? 'warning' : ''}">${this.diagnosticMarkers.length}</span>
+                  ` : ''}
+                </div>
               </div>
               <div class="panel-header-actions">
                 <div class="panel-action" @click=${this.toggleTerminal}>
@@ -522,12 +675,15 @@ export function createUser(firstName: string, lastName: string): IUser {
                 </div>
               </div>
             </div>
-            <div class="terminal-content">
+            <div class="terminal-content" style="display: ${this.activeBottomPanel === 'terminal' ? 'block' : 'none'}">
               <dees-terminal
                 .executionEnvironment=${this.executionEnvironment}
                 .setupCommand=${''}
               ></dees-terminal>
             </div>
+            <div class="problems-content" style="display: ${this.activeBottomPanel === 'problems' ? 'block' : 'none'}">
+              ${this.renderProblemsPanel()}
+            </div>
           </div>
         ` : ''}
       </div>
@@ -562,8 +718,7 @@ export function createUser(firstName: string, lastName: string): IUser {
       } else if (!this.executionEnvironment.ready) {
         await this.executionEnvironment.init();
       }
-      // Initialize IntelliSense after workspace is ready
+      // IntelliSense is initialized lazily when first file is opened (Monaco loads on demand)
-      await this.initializeIntelliSense();
     } catch (error) {
       console.error('Failed to initialize workspace:', error);
       // Reset flag to allow retry
@@ -575,16 +730,27 @@ export function createUser(firstName: string, lastName: string): IUser {
 
   private async initializeIntelliSense(): Promise<void> {
     if (!this.executionEnvironment) return;
+    if (this.intelliSenseInitialized) return;
 
-    // Wait for Monaco to be available globally
+    // Wait for Monaco to be available globally (with retry for timing)
-    const monacoInstance = (window as any).monaco;
+    let monacoInstance = (window as any).monaco;
     if (!monacoInstance) {
-      console.warn('Monaco not loaded, IntelliSense disabled');
+      // Monaco loads asynchronously when the editor mounts, wait a bit
+      await new Promise(resolve => setTimeout(resolve, 100));
+      monacoInstance = (window as any).monaco;
+    }
+
+    if (!monacoInstance) {
+      console.warn('Monaco not yet loaded, IntelliSense will be initialized later');
       return;
     }
 
+    this.intelliSenseInitialized = true;
     this.intelliSenseManager = new TypeScriptIntelliSenseManager();
     await this.intelliSenseManager.init(monacoInstance, this.executionEnvironment);
+
+    // Set up marker listener for Problems panel
+    this.setupMarkerListener();
   }
 
   private async handleFileSelect(e: CustomEvent<{ path: string; name: string }>) {
@@ -610,6 +776,21 @@ export function createUser(firstName: string, lastName: string): IUser {
         { path, name, content, modified: false },
       ];
       this.activeFilePath = path;
+
+      // Initialize IntelliSense lazily after first file opens (Monaco loads on demand)
+      if (!this.intelliSenseInitialized) {
+        // Wait for Monaco editor to mount and load Monaco from CDN
+        await this.updateComplete;
+        // Give Monaco time to load via require.js
+        await new Promise(resolve => setTimeout(resolve, 500));
+        await this.initializeIntelliSense();
+
+        // Process the initial file content for IntelliSense
+        const language = this.getLanguageFromPath(path);
+        if (this.intelliSenseManager && (language === 'typescript' || language === 'javascript')) {
+          await this.intelliSenseManager.processContentChange(content);
+        }
+      }
     } catch (error) {
       console.error(`Failed to open file ${path}:`, error);
     }
@@ -699,6 +880,103 @@ export function createUser(firstName: string, lastName: string): IUser {
     this.isTerminalCollapsed = !this.isTerminalCollapsed;
   }
 
+  private getErrorCount(): number {
+    // Monaco MarkerSeverity: Error = 8, Warning = 4, Info = 2, Hint = 1
+    return this.diagnosticMarkers.filter(m => m.severity === 8).length;
+  }
+
+  private renderProblemsPanel(): TemplateResult {
+    if (this.diagnosticMarkers.length === 0) {
+      return html`
+        <div class="problems-empty">
+          <dees-icon .icon=${'lucide:checkCircle'} iconSize="24"></dees-icon>
+          <span>No problems detected</span>
+        </div>
+      `;
+    }
+
+    return html`
+      <div class="problems-list">
+        ${this.diagnosticMarkers.map(marker => html`
+          <div class="problem-item" @click=${() => this.navigateToProblem(marker)}>
+            <dees-icon
+              class="problem-icon ${marker.severity === 8 ? 'error' : 'warning'}"
+              .icon=${marker.severity === 8 ? 'lucide:circleX' : 'lucide:triangleAlert'}
+              iconSize="14"
+            ></dees-icon>
+            <div class="problem-details">
+              <div class="problem-message">${marker.message}</div>
+              <div class="problem-location">
+                ${marker.resource.path.split('/').pop()} (${marker.startLineNumber}, ${marker.startColumn})
+                ${marker.source ? `[${marker.source}]` : ''}
+              </div>
+            </div>
+          </div>
+        `)}
+      </div>
+    `;
+  }
+
+  private async navigateToProblem(marker: typeof this.diagnosticMarkers[0]) {
+    // Extract file path from resource
+    const filePath = marker.resource.path;
+    const fileName = filePath.split('/').pop() || '';
+
+    // Open the file if not already open
+    const existingFile = this.openFiles.find(f => f.path === filePath);
+    if (!existingFile) {
+      await this.openFile(filePath, fileName);
+    } else {
+      this.activeFilePath = filePath;
+    }
+
+    // Wait for editor to be ready, then navigate to the line
+    await this.updateComplete;
+    const editorElement = this.shadowRoot?.querySelector('dees-editor-monaco') as DeesEditorMonaco;
+    if (editorElement) {
+      const editor = await editorElement.editorDeferred.promise;
+      editor.revealLineInCenter(marker.startLineNumber);
+      editor.setPosition({
+        lineNumber: marker.startLineNumber,
+        column: marker.startColumn,
+      });
+      editor.focus();
+    }
+  }
+
+  private setupMarkerListener() {
+    const monacoInstance = (window as any).monaco;
+    if (!monacoInstance) return;
+
+    // Listen for marker changes
+    monacoInstance.editor.onDidChangeMarkers((uris: any[]) => {
+      this.updateDiagnosticMarkers();
+    });
+
+    // Initial load
+    this.updateDiagnosticMarkers();
+  }
+
+  private updateDiagnosticMarkers() {
+    const monacoInstance = (window as any).monaco;
+    if (!monacoInstance) return;
+
+    // Get all markers from Monaco
+    const allMarkers = monacoInstance.editor.getModelMarkers({});
+
+    // Transform to our format
+    this.diagnosticMarkers = allMarkers.map((m: any) => ({
+      message: m.message,
+      severity: m.severity,
+      startLineNumber: m.startLineNumber,
+      startColumn: m.startColumn,
+      endLineNumber: m.endLineNumber,
+      endColumn: m.endColumn,
+      source: m.source,
+      resource: { path: m.resource.path },
+    }));
+  }
+
   public async saveActiveFile(): Promise<void> {
     const file = this.openFiles.find(f => f.path === this.activeFilePath);
     if (!file || !this.executionEnvironment) return;

ts_web/elements/00group-editor/dees-editor-workspace/typescript-intellisense.ts

@@ -7,6 +7,7 @@ interface IMonacoTypeScriptAPI {
     setCompilerOptions(options: Record<string, unknown>): void;
     setDiagnosticsOptions(options: Record<string, unknown>): void;
     addExtraLib(content: string, filePath?: string): void;
+    setEagerModelSync(value: boolean): void;
   };
   ScriptTarget: { ES2020: number };
   ModuleKind: { ESNext: number };
@@ -40,6 +41,50 @@ export class TypeScriptIntelliSenseManager {
     this.monacoInstance = monacoInst;
     this.executionEnvironment = env;
     this.configureCompilerOptions();
+    // Load all project TypeScript/JavaScript files into Monaco for cross-file resolution
+    await this.loadAllProjectFiles();
+  }
+
+  /**
+   * Recursively load all .ts/.js files from the virtual filesystem into Monaco
+   */
+  private async loadAllProjectFiles(): Promise<void> {
+    if (!this.executionEnvironment) return;
+    await this.loadFilesFromDirectory('/');
+  }
+
+  /**
+   * Recursively load files from a directory
+   */
+  private async loadFilesFromDirectory(dirPath: string): Promise<void> {
+    if (!this.executionEnvironment) return;
+
+    try {
+      const entries = await this.executionEnvironment.readdir(dirPath);
+
+      for (const entry of entries) {
+        const fullPath = dirPath === '/' ? `/${entry.name}` : `${dirPath}/${entry.name}`;
+
+        // Skip node_modules - too large and handled separately via addExtraLib
+        if (entry.name === 'node_modules') continue;
+
+        if (entry.isDirectory()) {
+          await this.loadFilesFromDirectory(fullPath);
+        } else if (entry.isFile()) {
+          const ext = entry.name.split('.').pop()?.toLowerCase();
+          if (ext === 'ts' || ext === 'tsx' || ext === 'js' || ext === 'jsx') {
+            try {
+              const content = await this.executionEnvironment.readFile(fullPath);
+              this.addFileModel(fullPath, content);
+            } catch {
+              // Ignore files that can't be read
+            }
+          }
+        }
+      }
+    } catch {
+      // Directory might not exist or not be readable
+    }
   }
 
   private configureCompilerOptions(): void {
@@ -56,6 +101,7 @@ export class TypeScriptIntelliSenseManager {
       noEmit: true,
       allowJs: true,
       checkJs: false,
+      allowNonTsExtensions: true,
       lib: ['es2020', 'dom', 'dom.iterable'],
     });
 
@@ -63,6 +109,10 @@ export class TypeScriptIntelliSenseManager {
       noSemanticValidation: false,
       noSyntaxValidation: false,
     });
+
+    // Enable eager model sync so TypeScript immediately processes all models
+    // This is critical for cross-file IntelliSense to work without requiring edits
+    ts.typescriptDefaults.setEagerModelSync(true);
   }
 
   /**