# DOM Visualization Feature - Implementation Summary ## Overview Added a keyboard shortcut (Ctrl+Shift+D) to generate and visualize the DOM tree of the current tab as a graph. ## Files Created ### Core Implementation - **src/debug/__init__.py** - Debug utilities package - **src/debug/dom_graph.py** - DOM graph generation and visualization - `generate_dot_graph()` - Generates Graphviz DOT format - `save_dom_graph()` - Saves DOT file - `render_dom_graph_to_svg()` - Renders to SVG (requires graphviz) - `print_dom_tree()` - Text tree representation ### Tests - **tests/test_dom_graph.py** - Comprehensive test suite (10 tests, all passing) - Tests graph generation, coloring, escaping, truncation - Tests tree printing with proper indentation - Tests depth limiting and attribute handling ### Documentation - **docs/DOM_VISUALIZATION.md** - Feature documentation - **test_dom.html** - Example test page - Updated **README.md** with keyboard shortcuts section ## Implementation Details ### Browser Integration (src/browser/chrome.py) 1. **Keyboard Shortcut Setup** - Added `_setup_keyboard_shortcuts()` method - Registers GTK EventControllerKey for key presses - Listens for Ctrl+Shift+D combination 2. **DOM Graph Handler** - Added `_on_key_pressed()` callback - Added `_show_dom_graph()` method that: - Gets current tab's DOM document - Generates graph in DOT format - Attempts SVG rendering (if graphviz installed) - Falls back to DOT file - Prints tree to console - Shows info dialog with result 3. **UI Feedback** - Added `_show_info_dialog()` for user notifications - Opens generated SVG automatically with xdg-open ### Graph Features **Color Coding:** - Light green: ``, `` - Light yellow: Headings (`

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