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fix(wysiwyg): Improve text selection detection with block-level approach

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- Remove global selectionchange listener in favor of block-level detection
- Add comprehensive debugging logs to track selection detection
- Add multiple event listeners (mouseup, keyup, selectstart) for better coverage
- Add debounced selection checking to avoid race conditions
- Add click-outside handler to hide formatting menu
- Simplify selection detection logic by removing complex shadow DOM traversal
This commit is contained in:
Juergen Kunz
2025-06-24 16:31:00 +00:00
parent 3b93bd63a7
commit 366544befc
2 changed files with 93 additions and 201 deletions
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209
ts_web/elements/wysiwyg/dees-input-wysiwyg.ts
View File

@ -77,14 +77,6 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
public editorContentRef: HTMLDivElement;
public isComposing: boolean = false;
private selectionChangeTimeout: any;
private selectionChangeHandler = () => {
// Throttle selection change events
if (this.selectionChangeTimeout) {
clearTimeout(this.selectionChangeTimeout);
}
this.selectionChangeTimeout = setTimeout(() => this.handleSelectionChange(), 50);
};
// Handler instances
public blockOperations: WysiwygBlockOperations;
@ -115,8 +107,7 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
async disconnectedCallback() {
await super.disconnectedCallback();
// Remove selection listener
document.removeEventListener('selectionchange', this.selectionChangeHandler);
// Selection listeners are now handled at block level
// Clean up handlers
this.inputHandler?.destroy();
// Clean up blur timeout
@ -124,56 +115,61 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
clearTimeout(this.blurTimeout);
this.blurTimeout = null;
}
// Clean up selection change timeout
if (this.selectionChangeTimeout) {
clearTimeout(this.selectionChangeTimeout);
this.selectionChangeTimeout = null;
}
}
async firstUpdated() {
this.updateValue();
this.editorContentRef = this.shadowRoot!.querySelector('.editor-content') as HTMLDivElement;
// Add global selection listener
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);
}
// We now rely on block-level selection detection
// No global selection listener needed
// 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) {
if (e.detail.hasSelection && e.detail.text.length > 0) {
this.selectedText = e.detail.text;
if (!this.slashMenu.visible && 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)
};
// 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();
console.log('Showing formatting menu at:', coords);
// Show the formatting menu at the calculated position
this.formattingMenu.show(
coords,
async (command: string) => await this.applyFormat(command)
);
}
}
});
// Hide formatting menu when clicking outside
document.addEventListener('mousedown', (e) => {
// Check if click is on the formatting menu itself
const formattingMenuElement = this.formattingMenu.shadowRoot?.querySelector('.formatting-menu');
if (formattingMenuElement && formattingMenuElement.contains(e.target as Node)) {
return;
}
// Check if we have an active selection
const selection = window.getSelection();
if (selection && selection.toString().trim().length > 0) {
// Don't hide if we still have a selection
return;
}
// Hide the menu
if (this.formattingMenu.visible) {
this.hideFormattingMenu();
}
});
// Add global keyboard listener for undo/redo
this.addEventListener('keydown', (e: KeyboardEvent) => {
// Check if the event is from within our editor
@ -727,133 +723,6 @@ export class DeesInputWysiwyg extends DeesInputBase<string> {
// Let the block component handle selection via custom event
}
private handleSelectionChange(): void {
console.log('=== handleSelectionChange called ===');
const selection = window.getSelection();
if (!selection || selection.rangeCount === 0) {
if (this.formattingMenu.visible) {
console.log('No selection, hiding menu');
this.hideFormattingMenu();
}
return;
}
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();
}
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 {

83
ts_web/elements/wysiwyg/dees-wysiwyg-block.ts
View File

@ -349,8 +349,10 @@ export class DeesWysiwygBlock extends DeesElement {
console.log('Cursor position after mouseup:', pos);
}
// Check for text selection
this.checkForTextSelection();
// Check for text selection with a longer delay
setTimeout(() => {
this.checkForTextSelection();
}, 50);
}, 0);
this.handleMouseUp(e);
@ -368,6 +370,31 @@ export class DeesWysiwygBlock extends DeesElement {
}, 0);
});
// Add select event listener
editableBlock.addEventListener('selectstart', () => {
console.log('Selection started in block');
});
// Listen for selection changes with a mutation observer
let selectionCheckTimeout: any = null;
const checkSelectionDebounced = () => {
if (selectionCheckTimeout) clearTimeout(selectionCheckTimeout);
selectionCheckTimeout = setTimeout(() => {
this.checkForTextSelection();
}, 100);
};
// Check selection on various events
editableBlock.addEventListener('mouseup', checkSelectionDebounced);
editableBlock.addEventListener('keyup', checkSelectionDebounced);
document.addEventListener('selectionchange', () => {
// Check if this block has focus
if (document.activeElement === editableBlock ||
this.shadowRoot?.activeElement === editableBlock) {
checkSelectionDebounced();
}
});
// Set initial content if needed
if (this.block.content) {
if (this.block.type === 'code') {
@ -798,57 +825,51 @@ export class DeesWysiwygBlock extends DeesElement {
const editableElement = this.block?.type === 'code'
? this.shadowRoot?.querySelector('.block.code') as HTMLDivElement
: this.shadowRoot?.querySelector('.block') as HTMLDivElement;
if (!editableElement) return;
const selection = window.getSelection();
if (!selection || selection.rangeCount === 0) {
// Dispatch event to clear selection
this.dispatchEvent(new CustomEvent('block-text-selected', {
detail: {
text: '',
blockId: this.block.id,
hasSelection: false
},
bubbles: true,
composed: true
}));
if (!editableElement) {
console.log('checkForTextSelection: No editable element found');
return;
}
const selectedText = selection.toString().trim();
const selection = window.getSelection();
if (!selection || selection.rangeCount === 0) {
console.log('checkForTextSelection: No selection or range count is 0');
return;
}
const selectedText = selection.toString();
console.log('checkForTextSelection: Selected text raw:', selectedText, 'length:', selectedText.length);
// Only proceed if we have selected text
if (selectedText.length === 0) {
// Dispatch event to clear selection
this.dispatchEvent(new CustomEvent('block-text-selected', {
detail: {
text: '',
blockId: this.block.id,
hasSelection: false
},
bubbles: true,
composed: true
}));
if (selectedText.trim().length === 0) {
console.log('checkForTextSelection: Selected text is empty after trim');
return;
}
// Check if the selection is within this block
const range = selection.getRangeAt(0);
console.log('checkForTextSelection: Range:', {
startContainer: range.startContainer,
endContainer: range.endContainer,
collapsed: range.collapsed
});
// Check if both start and end are within our editable element
const startInBlock = editableElement.contains(range.startContainer);
const endInBlock = editableElement.contains(range.endContainer);
console.log('checkForTextSelection: Start in block:', startInBlock, 'End in block:', endInBlock);
if (startInBlock && endInBlock) {
console.log('Block detected text selection:', selectedText);
console.log('✅ Block detected text selection:', selectedText.trim());
// Get the bounding rect of the selection
const rect = range.getBoundingClientRect();
console.log('Selection rect:', rect);
// Dispatch event to parent with selection details
this.dispatchEvent(new CustomEvent('block-text-selected', {
detail: {
text: selectedText,
text: selectedText.trim(),
blockId: this.block.id,
range: range,
rect: rect,
@ -857,6 +878,8 @@ export class DeesWysiwygBlock extends DeesElement {
bubbles: true,
composed: true
}));
} else {
console.log('checkForTextSelection: Selection not contained in block');
}
}
}