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fix(wysiwyg): Fix text selection detection for formatting menu in Shadow DOM

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- Update selection detection to properly handle Shadow DOM boundaries
- Use getComposedRanges API correctly according to MDN documentation
- Add direct selection detection within block components
- Dispatch custom events from blocks when text is selected
- Fix formatting menu positioning using selection rect from events
This commit is contained in:
Jürgen Kunz
2025-06-24 16:17:00 +00:00
parent ca525ce7e3
commit 3b93bd63a7
5 changed files with 320 additions and 110 deletions
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285
ts_web/elements/wysiwyg/dees-input-wysiwyg.ts
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@@ -24,6 +24,7 @@ import {
WysiwygDragDropHandler,
WysiwygModalManager,
WysiwygHistory,
WysiwygSelection,
DeesSlashMenu,
DeesFormattingMenu
} from './index.js';
@@ -138,11 +139,38 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
console.log('Adding selectionchange listener');
document.addEventListener('selectionchange', this.selectionChangeHandler);
// Also add listener to our shadow root if supported
if (this.shadowRoot && 'addEventListener' in this.shadowRoot) {
this.shadowRoot.addEventListener('selectionchange', this.selectionChangeHandler);
}
// Listen for custom selection events from blocks
this.addEventListener('block-text-selected', (e: CustomEvent) => {
console.log('Received block-text-selected event:', e.detail);
if (!this.slashMenu.visible) {
this.selectedText = e.detail.text;
this.updateFormattingMenuPosition();
if (e.detail.hasSelection && e.detail.text.length > 0) {
this.selectedText = e.detail.text;
// Use the rect from the event if available
if (e.detail.rect) {
const coords = {
x: e.detail.rect.left + (e.detail.rect.width / 2),
y: Math.max(45, e.detail.rect.top - 45)
};
// Show the formatting menu at the calculated position
this.formattingMenu.show(
coords,
async (command: string) => await this.applyFormat(command)
);
} else {
this.updateFormattingMenuPosition();
}
} else {
// Clear selection
this.hideFormattingMenu();
}
}
});
@@ -700,72 +728,157 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
}
private handleSelectionChange(): void {
// Try to get selection from shadow root first, then fall back to window
const shadowSelection = (this.shadowRoot as any).getSelection ? (this.shadowRoot as any).getSelection() : null;
const windowSelection = window.getSelection();
const editorContent = this.shadowRoot?.querySelector('.editor-content') as HTMLElement;
console.log('=== handleSelectionChange called ===');
// Check both shadow and window selections
let selection = shadowSelection;
let selectedText = shadowSelection?.toString() || '';
// If no shadow selection, check window selection
if (!selectedText && windowSelection) {
selection = windowSelection;
selectedText = windowSelection.toString() || '';
}
console.log('Selection change:', {
hasText: selectedText.length > 0,
selectedText: selectedText.substring(0, 50),
shadowSelection: !!shadowSelection,
windowSelection: !!windowSelection,
rangeCount: selection?.rangeCount,
editorContent: !!editorContent
});
if (!selection || selection.rangeCount === 0 || !editorContent) {
console.log('No selection or editor content');
const selection = window.getSelection();
if (!selection || selection.rangeCount === 0) {
if (this.formattingMenu.visible) {
console.log('No selection, hiding menu');
this.hideFormattingMenu();
}
return;
}
// If we have selected text, show the formatting menu
if (selectedText.length > 0) {
console.log('✅ Text selected:', selectedText);
if (selectedText !== this.selectedText) {
this.selectedText = selectedText;
this.updateFormattingMenuPosition();
const selectedText = selection.toString().trim();
console.log('Selected text:', selectedText);
if (selectedText.length === 0) {
if (this.formattingMenu.visible) {
console.log('No text selected, hiding menu');
this.hideFormattingMenu();
}
} else if (this.formattingMenu.visible) {
console.log('No text selected, hiding menu');
return;
}
// Get all shadow roots in our component tree
const shadowRoots: ShadowRoot[] = [];
if (this.shadowRoot) shadowRoots.push(this.shadowRoot);
// Find all block shadow roots
const blockWrappers = this.shadowRoot?.querySelectorAll('.block-wrapper');
console.log('Found block wrappers:', blockWrappers?.length || 0);
blockWrappers?.forEach(wrapper => {
const blockComponent = wrapper.querySelector('dees-wysiwyg-block');
if (blockComponent?.shadowRoot) {
shadowRoots.push(blockComponent.shadowRoot);
}
});
console.log('Shadow roots collected:', shadowRoots.length);
// Try using getComposedRanges if available
let ranges: Range[] | StaticRange[] = [];
let selectionInEditor = false;
if ('getComposedRanges' in selection && typeof selection.getComposedRanges === 'function') {
console.log('Using getComposedRanges with shadow roots');
try {
// According to MDN, pass shadow roots in options object
ranges = selection.getComposedRanges({ shadowRoots });
console.log('getComposedRanges returned', ranges.length, 'ranges');
if (ranges.length > 0) {
const range = ranges[0];
// Check if the range is within our editor
selectionInEditor = this.isRangeInEditor(range);
}
} catch (error) {
console.warn('getComposedRanges failed:', error);
}
}
// Fallback to regular selection API
if (ranges.length === 0 && selection.rangeCount > 0) {
console.log('Falling back to getRangeAt');
const range = selection.getRangeAt(0);
ranges = [range];
selectionInEditor = this.isRangeInEditor(range);
}
console.log('Selection in editor:', selectionInEditor);
if (selectionInEditor && selectedText !== this.selectedText) {
console.log('✅ Text selected in editor:', selectedText);
this.selectedText = selectedText;
this.updateFormattingMenuPosition();
} else if (!selectionInEditor && this.formattingMenu.visible) {
console.log('Selection not in editor, hiding menu');
this.hideFormattingMenu();
}
}
private isRangeInEditor(range: Range | StaticRange): boolean {
// Check if the selection is within one of our blocks
const blockWrappers = this.shadowRoot?.querySelectorAll('.block-wrapper');
if (!blockWrappers) return false;
// Check each block
for (let i = 0; i < blockWrappers.length; i++) {
const wrapper = blockWrappers[i];
const blockComponent = wrapper.querySelector('dees-wysiwyg-block');
if (blockComponent?.shadowRoot) {
const editableElements = blockComponent.shadowRoot.querySelectorAll('.block, .block.code');
for (let j = 0; j < editableElements.length; j++) {
const elem = editableElements[j];
if (elem) {
// For StaticRange, we need to check differently
if ('startContainer' in range) {
// Check if the range nodes are within this element
const startInElement = this.isNodeInElement(range.startContainer, elem);
const endInElement = this.isNodeInElement(range.endContainer, elem);
if (startInElement || endInElement) {
console.log('Selection found in block:', wrapper.getAttribute('data-block-id'));
return true;
}
}
}
}
}
}
console.log('Selection not in any block. Range:', range);
return false;
}
/**
* Check if a node is within an element (handles shadow DOM)
*/
private isNodeInElement(node: Node, element: Element): boolean {
let current: Node | null = node;
while (current) {
if (current === element) return true;
// Walk up the tree, including shadow host if in shadow DOM
current = current.parentNode || (current as any).host;
}
return false;
}
private updateFormattingMenuPosition(): void {
console.log('updateFormattingMenuPosition called');
const coords = WysiwygFormatting.getSelectionCoordinates(this.shadowRoot as ShadowRoot);
// Get all shadow roots
const shadowRoots: ShadowRoot[] = [];
if (this.shadowRoot) shadowRoots.push(this.shadowRoot);
// Find all block shadow roots
const blockWrappers = this.shadowRoot?.querySelectorAll('.block-wrapper');
blockWrappers?.forEach(wrapper => {
const blockComponent = wrapper.querySelector('dees-wysiwyg-block');
if (blockComponent?.shadowRoot) {
shadowRoots.push(blockComponent.shadowRoot);
}
});
const coords = WysiwygFormatting.getSelectionCoordinates(...shadowRoots);
console.log('Selection coordinates:', coords);
if (coords) {
const container = this.shadowRoot!.querySelector('.wysiwyg-container');
if (!container) {
console.error('Container not found!');
return;
}
const containerRect = container.getBoundingClientRect();
const formattingMenuPosition = {
x: coords.x - containerRect.left,
y: coords.y - containerRect.top
};
console.log('Setting menu position:', formattingMenuPosition);
// Show the global formatting menu
// Show the global formatting menu at absolute coordinates
this.formattingMenu.show(
{ x: coords.x, y: coords.y }, // Use absolute coordinates
{ x: coords.x, y: coords.y },
async (command: string) => await this.applyFormat(command)
);
} else {
@@ -779,33 +892,56 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
}
public async applyFormat(command: string): Promise<void> {
// Save current selection before applying format
const selection = window.getSelection();
if (!selection || selection.rangeCount === 0) return;
// Get the current block
const anchorNode = selection.anchorNode;
const blockElement = anchorNode?.nodeType === Node.TEXT_NODE
? anchorNode.parentElement?.closest('.block')
: (anchorNode as Element)?.closest('.block');
// Get all shadow roots
const shadowRoots: ShadowRoot[] = [];
if (this.shadowRoot) shadowRoots.push(this.shadowRoot);
if (!blockElement) return;
const blockWrapper = blockElement.closest('.block-wrapper');
const blockId = blockWrapper?.getAttribute('data-block-id');
const block = this.blocks.find(b => b.id === blockId);
const blockComponent = blockWrapper?.querySelector('dees-wysiwyg-block') as any;
// Find all block shadow roots
const blockWrappers = this.shadowRoot?.querySelectorAll('.block-wrapper');
blockWrappers?.forEach(wrapper => {
const blockComponent = wrapper.querySelector('dees-wysiwyg-block');
if (blockComponent?.shadowRoot) {
shadowRoots.push(blockComponent.shadowRoot);
}
});
if (!block || !blockComponent) return;
// Get selection info using Shadow DOM-aware utilities
const selectionInfo = WysiwygSelection.getSelectionInfo(...shadowRoots);
if (!selectionInfo) return;
// Find which block contains the selection
let targetBlock: IBlock | undefined;
let targetBlockComponent: any;
const wrappers = this.shadowRoot!.querySelectorAll('.block-wrapper');
for (let i = 0; i < wrappers.length; i++) {
const wrapper = wrappers[i];
const blockComponent = wrapper.querySelector('dees-wysiwyg-block') as any;
if (blockComponent?.shadowRoot) {
const block = blockComponent.shadowRoot.querySelector('.block');
if (block && (
block.contains(selectionInfo.startContainer) ||
block.contains(selectionInfo.endContainer)
)) {
const blockId = wrapper.getAttribute('data-block-id');
targetBlock = this.blocks.find(b => b.id === blockId);
targetBlockComponent = blockComponent;
break;
}
}
}
if (!targetBlock || !targetBlockComponent) return;
// Handle link command specially
if (command === 'link') {
const url = await this.showLinkDialog();
if (!url) {
// User cancelled - restore focus to block
blockComponent.focus();
targetBlockComponent.focus();
return;
}
// Apply link format
WysiwygFormatting.applyFormat(command, url);
} else {
// Apply the format
@@ -813,10 +949,10 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
}
// Update content after a microtask to ensure DOM is updated
await new Promise(resolve => setTimeout(resolve, 0));
await new Promise(resolve => setTimeout(resolve, 10));
// Force content update
block.content = blockComponent.getContent();
targetBlock.content = targetBlockComponent.getContent();
// Update value to persist changes
this.updateValue();
@@ -825,14 +961,9 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
if (command === 'link') {
this.hideFormattingMenu();
} else if (this.formattingMenu.visible) {
// Update menu position if still showing
// Keep selection and update menu position
this.updateFormattingMenuPosition();
}
// Ensure block still has focus
if (document.activeElement !== blockElement) {
blockComponent.focus();
}
}
private async showLinkDialog(): Promise<string | null> {