* Move comment * Add DocumentUtil.isInputElement * Use DocumentUtil.isInputElement * Fix simple hotkeys (shift or no modifier) preventing text field input * Improve input detection * Validate key is an input character before blocking hotkey * Simplify * Fix incorrect property
663 lines
23 KiB
JavaScript
663 lines
23 KiB
JavaScript
/*
|
|
* Copyright (C) 2016-2021 Yomichan Authors
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/* global
|
|
* DOMTextScanner
|
|
* TextSourceElement
|
|
* TextSourceRange
|
|
*/
|
|
|
|
class DocumentUtil {
|
|
constructor() {
|
|
this._transparentColorPattern = /rgba\s*\([^)]*,\s*0(?:\.0+)?\s*\)/;
|
|
}
|
|
|
|
getRangeFromPoint(x, y, deepContentScan) {
|
|
const elements = this._getElementsFromPoint(x, y, deepContentScan);
|
|
let imposter = null;
|
|
let imposterContainer = null;
|
|
let imposterSourceElement = null;
|
|
if (elements.length > 0) {
|
|
const element = elements[0];
|
|
switch (element.nodeName.toUpperCase()) {
|
|
case 'IMG':
|
|
case 'BUTTON':
|
|
case 'SELECT':
|
|
return new TextSourceElement(element);
|
|
case 'INPUT':
|
|
imposterSourceElement = element;
|
|
[imposter, imposterContainer] = this._createImposter(element, false);
|
|
break;
|
|
case 'TEXTAREA':
|
|
imposterSourceElement = element;
|
|
[imposter, imposterContainer] = this._createImposter(element, true);
|
|
break;
|
|
}
|
|
}
|
|
|
|
const range = this._caretRangeFromPointExt(x, y, deepContentScan ? elements : []);
|
|
if (range !== null) {
|
|
if (imposter !== null) {
|
|
this._setImposterStyle(imposterContainer.style, 'z-index', '-2147483646');
|
|
this._setImposterStyle(imposter.style, 'pointer-events', 'none');
|
|
}
|
|
return new TextSourceRange(range, '', imposterContainer, imposterSourceElement);
|
|
} else {
|
|
if (imposterContainer !== null) {
|
|
imposterContainer.parentNode.removeChild(imposterContainer);
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Extract a sentence from a document.
|
|
* @param source The text source object, either `TextSourceRange` or `TextSourceElement`.
|
|
* @param layoutAwareScan Whether or not layout-aware scan mode should be used.
|
|
* @param extent The length of the sentence to extract.
|
|
* @param terminateAtNewlines Whether or not a sentence should be terminated at newline characters.
|
|
* @param terminatorMap A mapping of characters that terminate a sentence.
|
|
* Format:
|
|
* ```js
|
|
* new Map([ [character: string, [includeCharacterAtStart: boolean, includeCharacterAtEnd: boolean]], ... ])
|
|
* ```
|
|
* @param forwardQuoteMap A mapping of quote characters that delimit a sentence.
|
|
* Format:
|
|
* ```js
|
|
* new Map([ [character: string, [otherCharacter: string, includeCharacterAtStart: boolean]], ... ])
|
|
* ```
|
|
* @param backwardQuoteMap A mapping of quote characters that delimit a sentence,
|
|
* which is the inverse of forwardQuoteMap.
|
|
* Format:
|
|
* ```js
|
|
* new Map([ [character: string, [otherCharacter: string, includeCharacterAtEnd: boolean]], ... ])
|
|
* ```
|
|
* @returns The sentence and the offset to the original source: `{sentence: string, offset: integer}`.
|
|
*/
|
|
extractSentence(source, layoutAwareScan, extent, terminateAtNewlines, terminatorMap, forwardQuoteMap, backwardQuoteMap) {
|
|
// Scan text
|
|
source = source.clone();
|
|
const startLength = source.setStartOffset(extent, layoutAwareScan);
|
|
const endLength = source.setEndOffset(extent * 2 - startLength, layoutAwareScan, true);
|
|
const text = source.text();
|
|
const textLength = text.length;
|
|
const textEndAnchor = textLength - endLength;
|
|
let pos1 = startLength;
|
|
let pos2 = textEndAnchor;
|
|
|
|
// Move backward
|
|
let quoteStack = [];
|
|
for (; pos1 > 0; --pos1) {
|
|
const c = text[pos1 - 1];
|
|
if (c === '\n' && terminateAtNewlines) { break; }
|
|
|
|
if (quoteStack.length === 0) {
|
|
const terminatorInfo = terminatorMap.get(c);
|
|
if (typeof terminatorInfo !== 'undefined') {
|
|
if (terminatorInfo[0]) { --pos1; }
|
|
break;
|
|
}
|
|
}
|
|
|
|
let quoteInfo = forwardQuoteMap.get(c);
|
|
if (typeof quoteInfo !== 'undefined') {
|
|
if (quoteStack.length === 0) {
|
|
if (quoteInfo[1]) { --pos1; }
|
|
break;
|
|
} else if (quoteStack[0] === c) {
|
|
quoteStack.pop();
|
|
continue;
|
|
}
|
|
}
|
|
|
|
quoteInfo = backwardQuoteMap.get(c);
|
|
if (typeof quoteInfo !== 'undefined') {
|
|
quoteStack.unshift(quoteInfo[0]);
|
|
}
|
|
}
|
|
|
|
// Move forward
|
|
quoteStack = [];
|
|
for (; pos2 < textLength; ++pos2) {
|
|
const c = text[pos2];
|
|
if (c === '\n' && terminateAtNewlines) { break; }
|
|
|
|
if (quoteStack.length === 0) {
|
|
const terminatorInfo = terminatorMap.get(c);
|
|
if (typeof terminatorInfo !== 'undefined') {
|
|
if (terminatorInfo[1]) { ++pos2; }
|
|
break;
|
|
}
|
|
}
|
|
|
|
let quoteInfo = backwardQuoteMap.get(c);
|
|
if (typeof quoteInfo !== 'undefined') {
|
|
if (quoteStack.length === 0) {
|
|
if (quoteInfo[1]) { ++pos2; }
|
|
break;
|
|
} else if (quoteStack[0] === c) {
|
|
quoteStack.pop();
|
|
continue;
|
|
}
|
|
}
|
|
|
|
quoteInfo = forwardQuoteMap.get(c);
|
|
if (typeof quoteInfo !== 'undefined') {
|
|
quoteStack.unshift(quoteInfo[0]);
|
|
}
|
|
}
|
|
|
|
// Trim whitespace
|
|
for (; pos1 < startLength && this._isWhitespace(text[pos1]); ++pos1) { /* NOP */ }
|
|
for (; pos2 > textEndAnchor && this._isWhitespace(text[pos2 - 1]); --pos2) { /* NOP */ }
|
|
|
|
// Result
|
|
return {
|
|
text: text.substring(pos1, pos2),
|
|
offset: startLength - pos1
|
|
};
|
|
}
|
|
|
|
static isPointInRect(x, y, rect) {
|
|
return (
|
|
x >= rect.left && x < rect.right &&
|
|
y >= rect.top && y < rect.bottom
|
|
);
|
|
}
|
|
|
|
static isPointInAnyRect(x, y, rects) {
|
|
for (const rect of rects) {
|
|
if (this.isPointInRect(x, y, rect)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static isPointInSelection(x, y, selection) {
|
|
for (let i = 0; i < selection.rangeCount; ++i) {
|
|
const range = selection.getRangeAt(i);
|
|
if (this.isPointInAnyRect(x, y, range.getClientRects())) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static isMouseButtonPressed(mouseEvent, button) {
|
|
const mouseEventButton = mouseEvent.button;
|
|
switch (button) {
|
|
case 'primary': return mouseEventButton === 0;
|
|
case 'secondary': return mouseEventButton === 2;
|
|
case 'auxiliary': return mouseEventButton === 1;
|
|
default: return false;
|
|
}
|
|
}
|
|
|
|
static getActiveModifiers(event) {
|
|
const modifiers = [];
|
|
if (event.altKey) { modifiers.push('alt'); }
|
|
if (event.ctrlKey) { modifiers.push('ctrl'); }
|
|
if (event.metaKey) { modifiers.push('meta'); }
|
|
if (event.shiftKey) { modifiers.push('shift'); }
|
|
return modifiers;
|
|
}
|
|
|
|
static getActiveModifiersAndButtons(event) {
|
|
const modifiers = this.getActiveModifiers(event);
|
|
this._getActiveButtons(event, modifiers);
|
|
return modifiers;
|
|
}
|
|
|
|
static getActiveButtons(event) {
|
|
const buttons = [];
|
|
this._getActiveButtons(event, buttons);
|
|
return buttons;
|
|
}
|
|
|
|
static addFullscreenChangeEventListener(onFullscreenChanged, eventListenerCollection=null) {
|
|
const target = document;
|
|
const options = false;
|
|
const fullscreenEventNames = [
|
|
'fullscreenchange',
|
|
'MSFullscreenChange',
|
|
'mozfullscreenchange',
|
|
'webkitfullscreenchange'
|
|
];
|
|
for (const eventName of fullscreenEventNames) {
|
|
if (eventListenerCollection === null) {
|
|
target.addEventListener(eventName, onFullscreenChanged, options);
|
|
} else {
|
|
eventListenerCollection.addEventListener(target, eventName, onFullscreenChanged, options);
|
|
}
|
|
}
|
|
}
|
|
|
|
static getFullscreenElement() {
|
|
return (
|
|
document.fullscreenElement ||
|
|
document.msFullscreenElement ||
|
|
document.mozFullScreenElement ||
|
|
document.webkitFullscreenElement ||
|
|
null
|
|
);
|
|
}
|
|
|
|
static getNodesInRange(range) {
|
|
const end = range.endContainer;
|
|
const nodes = [];
|
|
for (let node = range.startContainer; node !== null; node = this.getNextNode(node)) {
|
|
nodes.push(node);
|
|
if (node === end) { break; }
|
|
}
|
|
return nodes;
|
|
}
|
|
|
|
static getNextNode(node) {
|
|
let next = node.firstChild;
|
|
if (next === null) {
|
|
while (true) {
|
|
next = node.nextSibling;
|
|
if (next !== null) { break; }
|
|
|
|
next = node.parentNode;
|
|
if (next === null) { break; }
|
|
|
|
node = next;
|
|
}
|
|
}
|
|
return next;
|
|
}
|
|
|
|
static anyNodeMatchesSelector(nodes, selector) {
|
|
const ELEMENT_NODE = Node.ELEMENT_NODE;
|
|
for (let node of nodes) {
|
|
for (; node !== null; node = node.parentNode) {
|
|
if (node.nodeType !== ELEMENT_NODE) { continue; }
|
|
if (node.matches(selector)) { return true; }
|
|
break;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static everyNodeMatchesSelector(nodes, selector) {
|
|
const ELEMENT_NODE = Node.ELEMENT_NODE;
|
|
for (let node of nodes) {
|
|
while (true) {
|
|
if (node === null) { return false; }
|
|
if (node.nodeType === ELEMENT_NODE && node.matches(selector)) { break; }
|
|
node = node.parentNode;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static isMetaKeySupported(os, browser) {
|
|
return !(browser === 'firefox' || browser === 'firefox-mobile') || os === 'mac';
|
|
}
|
|
|
|
static isInputElementFocused() {
|
|
const element = document.activeElement;
|
|
if (element === null) { return false; }
|
|
const type = element.nodeName.toUpperCase();
|
|
switch (type) {
|
|
case 'INPUT':
|
|
case 'TEXTAREA':
|
|
case 'SELECT':
|
|
return true;
|
|
default:
|
|
return element.isContentEditable;
|
|
}
|
|
}
|
|
|
|
// Private
|
|
|
|
static _getActiveButtons(event, array) {
|
|
let {buttons} = event;
|
|
if (typeof buttons === 'number' && buttons > 0) {
|
|
for (let i = 0; i < 6; ++i) {
|
|
const buttonFlag = (1 << i);
|
|
if ((buttons & buttonFlag) !== 0) {
|
|
array.push(`mouse${i}`);
|
|
buttons &= ~buttonFlag;
|
|
if (buttons === 0) { break; }
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
_setImposterStyle(style, propertyName, value) {
|
|
style.setProperty(propertyName, value, 'important');
|
|
}
|
|
|
|
_createImposter(element, isTextarea) {
|
|
const body = document.body;
|
|
if (body === null) { return [null, null]; }
|
|
|
|
const elementStyle = window.getComputedStyle(element);
|
|
const elementRect = element.getBoundingClientRect();
|
|
const documentRect = document.documentElement.getBoundingClientRect();
|
|
let left = elementRect.left - documentRect.left;
|
|
let top = elementRect.top - documentRect.top;
|
|
|
|
// Container
|
|
const container = document.createElement('div');
|
|
const containerStyle = container.style;
|
|
this._setImposterStyle(containerStyle, 'all', 'initial');
|
|
this._setImposterStyle(containerStyle, 'position', 'absolute');
|
|
this._setImposterStyle(containerStyle, 'left', '0');
|
|
this._setImposterStyle(containerStyle, 'top', '0');
|
|
this._setImposterStyle(containerStyle, 'width', `${documentRect.width}px`);
|
|
this._setImposterStyle(containerStyle, 'height', `${documentRect.height}px`);
|
|
this._setImposterStyle(containerStyle, 'overflow', 'hidden');
|
|
this._setImposterStyle(containerStyle, 'opacity', '0');
|
|
this._setImposterStyle(containerStyle, 'pointer-events', 'none');
|
|
this._setImposterStyle(containerStyle, 'z-index', '2147483646');
|
|
|
|
// Imposter
|
|
const imposter = document.createElement('div');
|
|
const imposterStyle = imposter.style;
|
|
|
|
let value = element.value;
|
|
if (value.endsWith('\n')) { value += '\n'; }
|
|
imposter.textContent = value;
|
|
|
|
for (let i = 0, ii = elementStyle.length; i < ii; ++i) {
|
|
const property = elementStyle[i];
|
|
this._setImposterStyle(imposterStyle, property, elementStyle.getPropertyValue(property));
|
|
}
|
|
this._setImposterStyle(imposterStyle, 'position', 'absolute');
|
|
this._setImposterStyle(imposterStyle, 'top', `${top}px`);
|
|
this._setImposterStyle(imposterStyle, 'left', `${left}px`);
|
|
this._setImposterStyle(imposterStyle, 'margin', '0');
|
|
this._setImposterStyle(imposterStyle, 'pointer-events', 'auto');
|
|
|
|
if (isTextarea) {
|
|
if (elementStyle.overflow === 'visible') {
|
|
this._setImposterStyle(imposterStyle, 'overflow', 'auto');
|
|
}
|
|
} else {
|
|
this._setImposterStyle(imposterStyle, 'overflow', 'hidden');
|
|
this._setImposterStyle(imposterStyle, 'white-space', 'nowrap');
|
|
this._setImposterStyle(imposterStyle, 'line-height', elementStyle.height);
|
|
}
|
|
|
|
container.appendChild(imposter);
|
|
body.appendChild(container);
|
|
|
|
// Adjust size
|
|
const imposterRect = imposter.getBoundingClientRect();
|
|
if (imposterRect.width !== elementRect.width || imposterRect.height !== elementRect.height) {
|
|
const width = parseFloat(elementStyle.width) + (elementRect.width - imposterRect.width);
|
|
const height = parseFloat(elementStyle.height) + (elementRect.height - imposterRect.height);
|
|
this._setImposterStyle(imposterStyle, 'width', `${width}px`);
|
|
this._setImposterStyle(imposterStyle, 'height', `${height}px`);
|
|
}
|
|
if (imposterRect.x !== elementRect.x || imposterRect.y !== elementRect.y) {
|
|
left += (elementRect.left - imposterRect.left);
|
|
top += (elementRect.top - imposterRect.top);
|
|
this._setImposterStyle(imposterStyle, 'left', `${left}px`);
|
|
this._setImposterStyle(imposterStyle, 'top', `${top}px`);
|
|
}
|
|
|
|
imposter.scrollTop = element.scrollTop;
|
|
imposter.scrollLeft = element.scrollLeft;
|
|
|
|
return [imposter, container];
|
|
}
|
|
|
|
_getElementsFromPoint(x, y, all) {
|
|
if (all) {
|
|
// document.elementsFromPoint can return duplicates which must be removed.
|
|
const elements = document.elementsFromPoint(x, y);
|
|
return elements.filter((e, i) => elements.indexOf(e) === i);
|
|
}
|
|
|
|
const e = document.elementFromPoint(x, y);
|
|
return e !== null ? [e] : [];
|
|
}
|
|
|
|
_isPointInRange(x, y, range) {
|
|
// Require a text node to start
|
|
if (range.startContainer.nodeType !== Node.TEXT_NODE) {
|
|
return false;
|
|
}
|
|
|
|
// Scan forward
|
|
const nodePre = range.endContainer;
|
|
const offsetPre = range.endOffset;
|
|
try {
|
|
const {node, offset, content} = new DOMTextScanner(range.endContainer, range.endOffset, true, false).seek(1);
|
|
range.setEnd(node, offset);
|
|
|
|
if (!this._isWhitespace(content) && DocumentUtil.isPointInAnyRect(x, y, range.getClientRects())) {
|
|
return true;
|
|
}
|
|
} finally {
|
|
range.setEnd(nodePre, offsetPre);
|
|
}
|
|
|
|
// Scan backward
|
|
const {node, offset, content} = new DOMTextScanner(range.startContainer, range.startOffset, true, false).seek(-1);
|
|
range.setStart(node, offset);
|
|
|
|
if (!this._isWhitespace(content) && DocumentUtil.isPointInAnyRect(x, y, range.getClientRects())) {
|
|
// This purposefully leaves the starting offset as modified and sets the range length to 0.
|
|
range.setEnd(node, offset);
|
|
return true;
|
|
}
|
|
|
|
// No match
|
|
return false;
|
|
}
|
|
|
|
_isWhitespace(string) {
|
|
return string.trim().length === 0;
|
|
}
|
|
|
|
_caretRangeFromPoint(x, y) {
|
|
if (typeof document.caretRangeFromPoint === 'function') {
|
|
// Chrome, Edge
|
|
return document.caretRangeFromPoint(x, y);
|
|
}
|
|
|
|
if (typeof document.caretPositionFromPoint === 'function') {
|
|
// Firefox
|
|
return this._caretPositionFromPoint(x, y);
|
|
}
|
|
|
|
// No support
|
|
return null;
|
|
}
|
|
|
|
_caretPositionFromPoint(x, y) {
|
|
const position = document.caretPositionFromPoint(x, y);
|
|
if (position === null) {
|
|
return null;
|
|
}
|
|
const node = position.offsetNode;
|
|
if (node === null) {
|
|
return null;
|
|
}
|
|
|
|
let offset = 0;
|
|
const {nodeType} = node;
|
|
switch (nodeType) {
|
|
case Node.TEXT_NODE:
|
|
offset = position.offset;
|
|
break;
|
|
case Node.ELEMENT_NODE:
|
|
// Elements with user-select: all will return the element
|
|
// instead of a text point inside the element.
|
|
if (this._isElementUserSelectAll(node)) {
|
|
return this._caretPositionFromPointNormalizeStyles(x, y, node);
|
|
}
|
|
break;
|
|
}
|
|
|
|
try {
|
|
const range = document.createRange();
|
|
range.setStart(node, offset);
|
|
range.setEnd(node, offset);
|
|
return range;
|
|
} catch (e) {
|
|
// Firefox throws new DOMException("The operation is insecure.")
|
|
// when trying to select a node from within a ShadowRoot.
|
|
return null;
|
|
}
|
|
}
|
|
|
|
_caretPositionFromPointNormalizeStyles(x, y, nextElement) {
|
|
const previousStyles = new Map();
|
|
try {
|
|
while (true) {
|
|
this._recordPreviousStyle(previousStyles, nextElement);
|
|
nextElement.style.setProperty('user-select', 'text', 'important');
|
|
|
|
const position = document.caretPositionFromPoint(x, y);
|
|
if (position === null) {
|
|
return null;
|
|
}
|
|
const node = position.offsetNode;
|
|
if (node === null) {
|
|
return null;
|
|
}
|
|
|
|
let offset = 0;
|
|
const {nodeType} = node;
|
|
switch (nodeType) {
|
|
case Node.TEXT_NODE:
|
|
offset = position.offset;
|
|
break;
|
|
case Node.ELEMENT_NODE:
|
|
// Elements with user-select: all will return the element
|
|
// instead of a text point inside the element.
|
|
if (this._isElementUserSelectAll(node)) {
|
|
if (previousStyles.has(node)) {
|
|
// Recursive
|
|
return null;
|
|
}
|
|
nextElement = node;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
try {
|
|
const range = document.createRange();
|
|
range.setStart(node, offset);
|
|
range.setEnd(node, offset);
|
|
return range;
|
|
} catch (e) {
|
|
// Firefox throws new DOMException("The operation is insecure.")
|
|
// when trying to select a node from within a ShadowRoot.
|
|
return null;
|
|
}
|
|
}
|
|
} finally {
|
|
this._revertStyles(previousStyles);
|
|
}
|
|
}
|
|
|
|
_caretRangeFromPointExt(x, y, elements) {
|
|
let previousStyles = null;
|
|
try {
|
|
let i = 0;
|
|
let startContinerPre = null;
|
|
while (true) {
|
|
const range = this._caretRangeFromPoint(x, y);
|
|
if (range === null) {
|
|
return null;
|
|
}
|
|
|
|
const startContainer = range.startContainer;
|
|
if (startContinerPre !== startContainer) {
|
|
if (this._isPointInRange(x, y, range)) {
|
|
return range;
|
|
}
|
|
startContinerPre = startContainer;
|
|
}
|
|
|
|
if (previousStyles === null) { previousStyles = new Map(); }
|
|
i = this._disableTransparentElement(elements, i, previousStyles);
|
|
if (i < 0) {
|
|
return null;
|
|
}
|
|
}
|
|
} finally {
|
|
if (previousStyles !== null && previousStyles.size > 0) {
|
|
this._revertStyles(previousStyles);
|
|
}
|
|
}
|
|
}
|
|
|
|
_disableTransparentElement(elements, i, previousStyles) {
|
|
while (true) {
|
|
if (i >= elements.length) {
|
|
return -1;
|
|
}
|
|
|
|
const element = elements[i++];
|
|
if (this._isElementTransparent(element)) {
|
|
this._recordPreviousStyle(previousStyles, element);
|
|
element.style.setProperty('pointer-events', 'none', 'important');
|
|
return i;
|
|
}
|
|
}
|
|
}
|
|
|
|
_recordPreviousStyle(previousStyles, element) {
|
|
if (previousStyles.has(element)) { return; }
|
|
const style = element.hasAttribute('style') ? element.getAttribute('style') : null;
|
|
previousStyles.set(element, style);
|
|
}
|
|
|
|
_revertStyles(previousStyles) {
|
|
for (const [element, style] of previousStyles.entries()) {
|
|
if (style === null) {
|
|
element.removeAttribute('style');
|
|
} else {
|
|
element.setAttribute('style', style);
|
|
}
|
|
}
|
|
}
|
|
|
|
_isElementTransparent(element) {
|
|
if (
|
|
element === document.body ||
|
|
element === document.documentElement
|
|
) {
|
|
return false;
|
|
}
|
|
const style = window.getComputedStyle(element);
|
|
return (
|
|
parseFloat(style.opacity) <= 0 ||
|
|
style.visibility === 'hidden' ||
|
|
(style.backgroundImage === 'none' && this._isColorTransparent(style.backgroundColor))
|
|
);
|
|
}
|
|
|
|
_isColorTransparent(cssColor) {
|
|
return this._transparentColorPattern.test(cssColor);
|
|
}
|
|
|
|
_isElementUserSelectAll(element) {
|
|
return getComputedStyle(element).userSelect === 'all';
|
|
}
|
|
}
|