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Diffstat (limited to 'ext/mixed/js/text-scanner.js')
| -rw-r--r-- | ext/mixed/js/text-scanner.js | 982 |
1 files changed, 0 insertions, 982 deletions
diff --git a/ext/mixed/js/text-scanner.js b/ext/mixed/js/text-scanner.js deleted file mode 100644 index 7672b69d..00000000 --- a/ext/mixed/js/text-scanner.js +++ /dev/null @@ -1,982 +0,0 @@ -/* - * Copyright (C) 2019-2021 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 - * DocumentUtil - * api - */ - -class TextScanner extends EventDispatcher { - constructor({ - node, - documentUtil, - getSearchContext, - ignoreElements=null, - ignorePoint=null, - searchTerms=false, - searchKanji=false, - searchOnClick=false, - searchOnClickOnly=false - }) { - super(); - this._node = node; - this._documentUtil = documentUtil; - this._getSearchContext = getSearchContext; - this._ignoreElements = ignoreElements; - this._ignorePoint = ignorePoint; - this._searchTerms = searchTerms; - this._searchKanji = searchKanji; - this._searchOnClick = searchOnClick; - this._searchOnClickOnly = searchOnClickOnly; - - this._isPrepared = false; - this._includeSelector = null; - this._excludeSelector = null; - - this._inputInfoCurrent = null; - this._scanTimerPromise = null; - this._textSourceCurrent = null; - this._textSourceCurrentSelected = false; - this._pendingLookup = false; - - this._deepContentScan = false; - this._selectText = false; - this._delay = 0; - this._touchInputEnabled = false; - this._pointerEventsEnabled = false; - this._scanLength = 1; - this._layoutAwareScan = false; - this._preventMiddleMouse = false; - this._sentenceScanExtent = 0; - this._sentenceTerminatorMap = new Map(); - this._sentenceForwardQuoteMap = new Map(); - this._sentenceBackwardQuoteMap = new Map(); - this._inputs = []; - - this._enabled = false; - this._enabledValue = false; - this._eventListeners = new EventListenerCollection(); - - this._primaryTouchIdentifier = null; - this._preventNextContextMenu = false; - this._preventNextMouseDown = false; - this._preventNextClick = false; - this._preventScroll = false; - this._penPointerPressed = false; - this._penPointerReleased = false; - this._pointerIdTypeMap = new Map(); - - this._canClearSelection = true; - } - - get canClearSelection() { - return this._canClearSelection; - } - - set canClearSelection(value) { - this._canClearSelection = value; - } - - get includeSelector() { - return this._includeSelector; - } - - set includeSelector(value) { - this._includeSelector = value; - } - - get excludeSelector() { - return this._excludeSelector; - } - - set excludeSelector(value) { - this._excludeSelector = value; - } - - prepare() { - this._isPrepared = true; - this.setEnabled(this._enabled); - } - - setEnabled(enabled) { - this._enabled = enabled; - - const value = enabled && this._isPrepared; - if (this._enabledValue === value) { return; } - - this._eventListeners.removeAllEventListeners(); - this._primaryTouchIdentifier = null; - this._preventNextContextMenu = false; - this._preventNextMouseDown = false; - this._preventNextClick = false; - this._preventScroll = false; - this._penPointerPressed = false; - this._penPointerReleased = false; - this._pointerIdTypeMap.clear(); - - this._enabledValue = value; - - if (value) { - this._hookEvents(); - } else { - this.clearSelection(true); - } - } - - setOptions({ - inputs, - deepContentScan, - selectText, - delay, - touchInputEnabled, - pointerEventsEnabled, - scanLength, - layoutAwareScan, - preventMiddleMouse, - sentenceParsingOptions - }) { - if (Array.isArray(inputs)) { - this._inputs = inputs.map(({ - include, - exclude, - types, - options: { - searchTerms, - searchKanji, - scanOnTouchMove, - scanOnPenHover, - scanOnPenPress, - scanOnPenRelease, - preventTouchScrolling - } - }) => ({ - include: this._getInputArray(include), - exclude: this._getInputArray(exclude), - types: this._getInputTypeSet(types), - options: { - searchTerms, - searchKanji, - scanOnTouchMove, - scanOnPenHover, - scanOnPenPress, - scanOnPenRelease, - preventTouchScrolling - } - })); - } - if (typeof deepContentScan === 'boolean') { - this._deepContentScan = deepContentScan; - } - if (typeof selectText === 'boolean') { - this._selectText = selectText; - } - if (typeof delay === 'number') { - this._delay = delay; - } - if (typeof touchInputEnabled === 'boolean') { - this._touchInputEnabled = touchInputEnabled; - } - if (typeof pointerEventsEnabled === 'boolean') { - this._pointerEventsEnabled = pointerEventsEnabled; - } - if (typeof scanLength === 'number') { - this._scanLength = scanLength; - } - if (typeof layoutAwareScan === 'boolean') { - this._layoutAwareScan = layoutAwareScan; - } - if (typeof preventMiddleMouse === 'boolean') { - this._preventMiddleMouse = preventMiddleMouse; - } - if (typeof sentenceParsingOptions === 'object' && sentenceParsingOptions !== null) { - const {scanExtent, enableTerminationCharacters, terminationCharacters} = sentenceParsingOptions; - const hasTerminationCharacters = (typeof terminationCharacters === 'object' && Array.isArray(terminationCharacters)); - if (typeof scanExtent === 'number') { - this._sentenceScanExtent = sentenceParsingOptions.scanExtent; - } - if (typeof enableTerminationCharacters === 'boolean' || hasTerminationCharacters) { - const sentenceTerminatorMap = this._sentenceTerminatorMap; - const sentenceForwardQuoteMap = this._sentenceForwardQuoteMap; - const sentenceBackwardQuoteMap = this._sentenceBackwardQuoteMap; - sentenceTerminatorMap.clear(); - sentenceForwardQuoteMap.clear(); - sentenceBackwardQuoteMap.clear(); - if (enableTerminationCharacters !== false && hasTerminationCharacters) { - for (const {enabled, character1, character2, includeCharacterAtStart, includeCharacterAtEnd} of terminationCharacters) { - if (!enabled) { continue; } - if (character2 === null) { - sentenceTerminatorMap.set(character1, [includeCharacterAtStart, includeCharacterAtEnd]); - } else { - sentenceForwardQuoteMap.set(character1, [character2, includeCharacterAtStart]); - sentenceBackwardQuoteMap.set(character2, [character1, includeCharacterAtEnd]); - } - } - } - } - } - } - - getTextSourceContent(textSource, length, layoutAwareScan) { - const clonedTextSource = textSource.clone(); - - clonedTextSource.setEndOffset(length, layoutAwareScan); - - const includeSelector = this._includeSelector; - const excludeSelector = this._excludeSelector; - if (includeSelector !== null || excludeSelector !== null) { - this._constrainTextSource(clonedTextSource, includeSelector, excludeSelector, layoutAwareScan); - } - - return clonedTextSource.text(); - } - - hasSelection() { - return (this._textSourceCurrent !== null); - } - - clearSelection(passive) { - if (!this._canClearSelection) { return; } - if (this._textSourceCurrent !== null) { - if (this._textSourceCurrentSelected) { - this._textSourceCurrent.deselect(); - } - this._textSourceCurrent = null; - this._textSourceCurrentSelected = false; - this._inputInfoCurrent = null; - } - this.trigger('clearSelection', {passive}); - } - - getCurrentTextSource() { - return this._textSourceCurrent; - } - - setCurrentTextSource(textSource) { - this._textSourceCurrent = textSource; - if (this._selectText) { - this._textSourceCurrent.select(); - this._textSourceCurrentSelected = true; - } else { - this._textSourceCurrentSelected = false; - } - } - - async searchLast() { - if (this._textSourceCurrent !== null && this._inputInfoCurrent !== null) { - await this._search(this._textSourceCurrent, this._searchTerms, this._searchKanji, this._inputInfoCurrent); - return true; - } - return false; - } - - async search(textSource, inputDetail) { - const inputInfo = this._createInputInfo(null, 'script', 'script', true, [], [], inputDetail); - return await this._search(textSource, this._searchTerms, this._searchKanji, inputInfo); - } - - // Private - - _createOptionsContextForInput(baseOptionsContext, inputInfo) { - const optionsContext = clone(baseOptionsContext); - const {modifiers, modifierKeys} = inputInfo; - optionsContext.modifiers = [...modifiers]; - optionsContext.modifierKeys = [...modifierKeys]; - return optionsContext; - } - - async _search(textSource, searchTerms, searchKanji, inputInfo) { - let definitions = null; - let sentence = null; - let type = null; - let error = null; - let searched = false; - let optionsContext = null; - let detail = null; - - try { - if (this._textSourceCurrent !== null && this._textSourceCurrent.hasSameStart(textSource)) { - return null; - } - - ({optionsContext, detail} = await this._getSearchContext()); - optionsContext = this._createOptionsContextForInput(optionsContext, inputInfo); - - searched = true; - - const result = await this._findDefinitions(textSource, searchTerms, searchKanji, optionsContext); - if (result !== null) { - ({definitions, sentence, type} = result); - this._inputInfoCurrent = inputInfo; - this.setCurrentTextSource(textSource); - } - } catch (e) { - error = e; - } - - if (!searched) { return null; } - - const results = { - textScanner: this, - type, - definitions, - sentence, - inputInfo, - textSource, - optionsContext, - detail, - error - }; - this.trigger('searched', results); - return results; - } - - _onMouseOver(e) { - if (this._ignoreElements !== null && this._ignoreElements().includes(e.target)) { - this._scanTimerClear(); - } - } - - _onMouseMove(e) { - this._scanTimerClear(); - - const inputInfo = this._getMatchingInputGroupFromEvent('mouse', 'mouseMove', e); - if (inputInfo === null) { return; } - - this._searchAtFromMouseMove(e.clientX, e.clientY, inputInfo); - } - - _onMouseDown(e) { - if (this._preventNextMouseDown) { - this._preventNextMouseDown = false; - this._preventNextClick = true; - e.preventDefault(); - e.stopPropagation(); - return false; - } - - switch (e.button) { - case 0: // Primary - this._scanTimerClear(); - this.clearSelection(false); - break; - case 1: // Middle - if (this._preventMiddleMouse) { - e.preventDefault(); - e.stopPropagation(); - return false; - } - break; - } - } - - _onMouseOut() { - this._scanTimerClear(); - } - - _onClick(e) { - if (this._searchOnClick) { - const modifiers = DocumentUtil.getActiveModifiersAndButtons(e); - const modifierKeys = DocumentUtil.getActiveModifiers(e); - const inputInfo = this._createInputInfo(null, 'mouse', 'click', false, modifiers, modifierKeys); - this._searchAt(e.clientX, e.clientY, inputInfo); - } - - if (this._preventNextClick) { - this._preventNextClick = false; - e.preventDefault(); - e.stopPropagation(); - return false; - } - } - - _onAuxClick() { - this._preventNextContextMenu = false; - } - - _onContextMenu(e) { - if (this._preventNextContextMenu) { - this._preventNextContextMenu = false; - e.preventDefault(); - e.stopPropagation(); - return false; - } - } - - _onTouchStart(e) { - if (this._primaryTouchIdentifier !== null || e.changedTouches.length === 0) { - return; - } - - const {clientX, clientY, identifier} = e.changedTouches[0]; - this._onPrimaryTouchStart(e, clientX, clientY, identifier); - } - - _onPrimaryTouchStart(e, x, y, identifier) { - this._preventScroll = false; - this._preventNextContextMenu = false; - this._preventNextMouseDown = false; - this._preventNextClick = false; - - if (DocumentUtil.isPointInSelection(x, y, window.getSelection())) { - return; - } - - this._primaryTouchIdentifier = identifier; - - this._searchAtFromTouchStart(e, x, y); - } - - _onTouchEnd(e) { - if ( - this._primaryTouchIdentifier === null || - this._getTouch(e.changedTouches, this._primaryTouchIdentifier) === null - ) { - return; - } - - this._onPrimaryTouchEnd(); - } - - _onPrimaryTouchEnd() { - this._primaryTouchIdentifier = null; - this._preventScroll = false; - this._preventNextClick = false; - // Don't revert context menu and mouse down prevention, since these events can occur after the touch has ended. - // I.e. this._preventNextContextMenu and this._preventNextMouseDown should not be assigned to false. - } - - _onTouchCancel(e) { - this._onTouchEnd(e); - } - - _onTouchMove(e) { - if (!this._preventScroll || !e.cancelable || this._primaryTouchIdentifier === null) { - return; - } - - const primaryTouch = this._getTouch(e.changedTouches, this._primaryTouchIdentifier); - if (primaryTouch === null) { - return; - } - - const inputInfo = this._getMatchingInputGroupFromEvent('touch', 'touchMove', e); - if (inputInfo === null) { return; } - - if (inputInfo.input.options.scanOnTouchMove) { - this._searchAt(primaryTouch.clientX, primaryTouch.clientY, inputInfo); - } - - e.preventDefault(); // Disable scroll - } - - _onPointerOver(e) { - const {pointerType, pointerId, isPrimary} = e; - if (pointerType === 'pen') { - this._pointerIdTypeMap.set(pointerId, pointerType); - } - - if (!isPrimary) { return; } - switch (pointerType) { - case 'mouse': return this._onMousePointerOver(e); - case 'touch': return this._onTouchPointerOver(e); - case 'pen': return this._onPenPointerOver(e); - } - } - - _onPointerDown(e) { - if (!e.isPrimary) { return; } - switch (this._getPointerEventType(e)) { - case 'mouse': return this._onMousePointerDown(e); - case 'touch': return this._onTouchPointerDown(e); - case 'pen': return this._onPenPointerDown(e); - } - } - - _onPointerMove(e) { - if (!e.isPrimary) { return; } - switch (this._getPointerEventType(e)) { - case 'mouse': return this._onMousePointerMove(e); - case 'touch': return this._onTouchPointerMove(e); - case 'pen': return this._onPenPointerMove(e); - } - } - - _onPointerUp(e) { - if (!e.isPrimary) { return; } - switch (this._getPointerEventType(e)) { - case 'mouse': return this._onMousePointerUp(e); - case 'touch': return this._onTouchPointerUp(e); - case 'pen': return this._onPenPointerUp(e); - } - } - - _onPointerCancel(e) { - this._pointerIdTypeMap.delete(e.pointerId); - if (!e.isPrimary) { return; } - switch (e.pointerType) { - case 'mouse': return this._onMousePointerCancel(e); - case 'touch': return this._onTouchPointerCancel(e); - case 'pen': return this._onPenPointerCancel(e); - } - } - - _onPointerOut(e) { - this._pointerIdTypeMap.delete(e.pointerId); - if (!e.isPrimary) { return; } - switch (e.pointerType) { - case 'mouse': return this._onMousePointerOut(e); - case 'touch': return this._onTouchPointerOut(e); - case 'pen': return this._onPenPointerOut(e); - } - } - - _onMousePointerOver(e) { - return this._onMouseOver(e); - } - - _onMousePointerDown(e) { - return this._onMouseDown(e); - } - - _onMousePointerMove(e) { - return this._onMouseMove(e); - } - - _onMousePointerUp() { - // NOP - } - - _onMousePointerCancel(e) { - return this._onMouseOut(e); - } - - _onMousePointerOut(e) { - return this._onMouseOut(e); - } - - _onTouchPointerOver() { - // NOP - } - - _onTouchPointerDown(e) { - const {clientX, clientY, pointerId} = e; - return this._onPrimaryTouchStart(e, clientX, clientY, pointerId); - } - - _onTouchPointerMove(e) { - if (!this._preventScroll || !e.cancelable) { - return; - } - - const inputInfo = this._getMatchingInputGroupFromEvent('touch', 'touchMove', e); - if (inputInfo === null || !inputInfo.input.options.scanOnTouchMove) { return; } - - this._searchAt(e.clientX, e.clientY, inputInfo); - } - - _onTouchPointerUp() { - return this._onPrimaryTouchEnd(); - } - - _onTouchPointerCancel() { - return this._onPrimaryTouchEnd(); - } - - _onTouchPointerOut() { - // NOP - } - - _onTouchMovePreventScroll(e) { - if (!this._preventScroll) { return; } - - if (e.cancelable) { - e.preventDefault(); - } else { - this._preventScroll = false; - } - } - - _onPenPointerOver(e) { - this._penPointerPressed = false; - this._penPointerReleased = false; - this._searchAtFromPen(e, e.clientX, e.clientY, 'pointerOver', false); - } - - _onPenPointerDown(e) { - this._penPointerPressed = true; - this._searchAtFromPen(e, e.clientX, e.clientY, 'pointerDown', true); - } - - _onPenPointerMove(e) { - if (this._penPointerPressed && (!this._preventScroll || !e.cancelable)) { return; } - this._searchAtFromPen(e, e.clientX, e.clientY, 'pointerMove', true); - } - - _onPenPointerUp() { - this._penPointerPressed = false; - this._penPointerReleased = true; - this._preventScroll = false; - } - - _onPenPointerCancel(e) { - this._onPenPointerOut(e); - } - - _onPenPointerOut() { - this._penPointerPressed = false; - this._penPointerReleased = false; - this._preventScroll = false; - this._preventNextContextMenu = false; - this._preventNextMouseDown = false; - this._preventNextClick = false; - } - - async _scanTimerWait() { - const delay = this._delay; - const promise = promiseTimeout(delay, true); - this._scanTimerPromise = promise; - try { - return await promise; - } finally { - if (this._scanTimerPromise === promise) { - this._scanTimerPromise = null; - } - } - } - - _scanTimerClear() { - if (this._scanTimerPromise !== null) { - this._scanTimerPromise.resolve(false); - this._scanTimerPromise = null; - } - } - - _arePointerEventsSupported() { - return (this._pointerEventsEnabled && typeof PointerEvent !== 'undefined'); - } - - _hookEvents() { - let eventListenerInfos; - if (this._searchOnClickOnly) { - eventListenerInfos = this._getMouseClickOnlyEventListeners(); - } else if (this._arePointerEventsSupported()) { - eventListenerInfos = this._getPointerEventListeners(); - } else { - eventListenerInfos = this._getMouseEventListeners(); - if (this._touchInputEnabled) { - eventListenerInfos.push(...this._getTouchEventListeners()); - } - } - - for (const args of eventListenerInfos) { - this._eventListeners.addEventListener(...args); - } - } - - _getPointerEventListeners() { - return [ - [this._node, 'pointerover', this._onPointerOver.bind(this)], - [this._node, 'pointerdown', this._onPointerDown.bind(this)], - [this._node, 'pointermove', this._onPointerMove.bind(this)], - [this._node, 'pointerup', this._onPointerUp.bind(this)], - [this._node, 'pointercancel', this._onPointerCancel.bind(this)], - [this._node, 'pointerout', this._onPointerOut.bind(this)], - [this._node, 'touchmove', this._onTouchMovePreventScroll.bind(this), {passive: false}], - [this._node, 'mousedown', this._onMouseDown.bind(this)], - [this._node, 'click', this._onClick.bind(this)], - [this._node, 'auxclick', this._onAuxClick.bind(this)] - ]; - } - - _getMouseEventListeners() { - return [ - [this._node, 'mousedown', this._onMouseDown.bind(this)], - [this._node, 'mousemove', this._onMouseMove.bind(this)], - [this._node, 'mouseover', this._onMouseOver.bind(this)], - [this._node, 'mouseout', this._onMouseOut.bind(this)], - [this._node, 'click', this._onClick.bind(this)] - ]; - } - - _getMouseClickOnlyEventListeners() { - return [ - [this._node, 'click', this._onClick.bind(this)] - ]; - } - _getTouchEventListeners() { - return [ - [this._node, 'auxclick', this._onAuxClick.bind(this)], - [this._node, 'touchstart', this._onTouchStart.bind(this)], - [this._node, 'touchend', this._onTouchEnd.bind(this)], - [this._node, 'touchcancel', this._onTouchCancel.bind(this)], - [this._node, 'touchmove', this._onTouchMove.bind(this), {passive: false}], - [this._node, 'contextmenu', this._onContextMenu.bind(this)] - ]; - } - - _getTouch(touchList, identifier) { - for (const touch of touchList) { - if (touch.identifier === identifier) { - return touch; - } - } - return null; - } - - async _findDefinitions(textSource, searchTerms, searchKanji, optionsContext) { - if (textSource === null) { - return null; - } - if (searchTerms) { - const results = await this._findTerms(textSource, optionsContext); - if (results !== null) { return results; } - } - if (searchKanji) { - const results = await this._findKanji(textSource, optionsContext); - if (results !== null) { return results; } - } - return null; - } - - async _findTerms(textSource, optionsContext) { - const scanLength = this._scanLength; - const sentenceScanExtent = this._sentenceScanExtent; - const sentenceTerminatorMap = this._sentenceTerminatorMap; - const sentenceForwardQuoteMap = this._sentenceForwardQuoteMap; - const sentenceBackwardQuoteMap = this._sentenceBackwardQuoteMap; - const layoutAwareScan = this._layoutAwareScan; - const searchText = this.getTextSourceContent(textSource, scanLength, layoutAwareScan); - if (searchText.length === 0) { return null; } - - const {definitions, length} = await api.termsFind(searchText, {}, optionsContext); - if (definitions.length === 0) { return null; } - - textSource.setEndOffset(length, layoutAwareScan); - const sentence = this._documentUtil.extractSentence( - textSource, - layoutAwareScan, - sentenceScanExtent, - sentenceTerminatorMap, - sentenceForwardQuoteMap, - sentenceBackwardQuoteMap - ); - - return {definitions, sentence, type: 'terms'}; - } - - async _findKanji(textSource, optionsContext) { - const sentenceScanExtent = this._sentenceScanExtent; - const sentenceTerminatorMap = this._sentenceTerminatorMap; - const sentenceForwardQuoteMap = this._sentenceForwardQuoteMap; - const sentenceBackwardQuoteMap = this._sentenceBackwardQuoteMap; - const layoutAwareScan = this._layoutAwareScan; - const searchText = this.getTextSourceContent(textSource, 1, layoutAwareScan); - if (searchText.length === 0) { return null; } - - const definitions = await api.kanjiFind(searchText, optionsContext); - if (definitions.length === 0) { return null; } - - textSource.setEndOffset(1, layoutAwareScan); - const sentence = this._documentUtil.extractSentence( - textSource, - layoutAwareScan, - sentenceScanExtent, - sentenceTerminatorMap, - sentenceForwardQuoteMap, - sentenceBackwardQuoteMap - ); - - return {definitions, sentence, type: 'kanji'}; - } - - async _searchAt(x, y, inputInfo) { - if (this._pendingLookup) { return; } - - try { - const sourceInput = inputInfo.input; - let searchTerms = this._searchTerms; - let searchKanji = this._searchKanji; - if (sourceInput !== null) { - if (searchTerms && !sourceInput.options.searchTerms) { searchTerms = false; } - if (searchKanji && !sourceInput.options.searchKanji) { searchKanji = false; } - } - - this._pendingLookup = true; - this._scanTimerClear(); - - if (typeof this._ignorePoint === 'function' && await this._ignorePoint(x, y)) { - return; - } - - const textSource = this._documentUtil.getRangeFromPoint(x, y, this._deepContentScan); - try { - await this._search(textSource, searchTerms, searchKanji, inputInfo); - } finally { - if (textSource !== null) { - textSource.cleanup(); - } - } - } catch (e) { - yomichan.logError(e); - } finally { - this._pendingLookup = false; - } - } - - async _searchAtFromMouseMove(x, y, inputInfo) { - if (this._pendingLookup) { return; } - - if (inputInfo.passive) { - if (!await this._scanTimerWait()) { - // Aborted - return; - } - } - - await this._searchAt(x, y, inputInfo); - } - - async _searchAtFromTouchStart(e, x, y) { - if (this._pendingLookup) { return; } - - const inputInfo = this._getMatchingInputGroupFromEvent('touch', 'touchStart', e); - if (inputInfo === null) { return; } - - const textSourceCurrentPrevious = this._textSourceCurrent !== null ? this._textSourceCurrent.clone() : null; - const preventScroll = inputInfo.input.options.preventTouchScrolling; - - await this._searchAt(x, y, inputInfo); - - if ( - this._textSourceCurrent !== null && - !this._textSourceCurrent.hasSameStart(textSourceCurrentPrevious) - ) { - this._preventScroll = preventScroll; - this._preventNextContextMenu = true; - this._preventNextMouseDown = true; - } - } - - async _searchAtFromPen(e, x, y, eventType, prevent) { - if (this._pendingLookup) { return; } - - const inputInfo = this._getMatchingInputGroupFromEvent('pen', eventType, e); - if (inputInfo === null) { return; } - - const {input: {options}} = inputInfo; - if ( - (!options.scanOnPenRelease && this._penPointerReleased) || - !(this._penPointerPressed ? options.scanOnPenPress : options.scanOnPenHover) - ) { - return; - } - - const preventScroll = inputInfo.input.options.preventTouchScrolling; - - await this._searchAt(x, y, inputInfo); - - if ( - prevent && - this._textSourceCurrent !== null - ) { - this._preventScroll = preventScroll; - this._preventNextContextMenu = true; - this._preventNextMouseDown = true; - this._preventNextClick = true; - } - } - - _getMatchingInputGroupFromEvent(pointerType, eventType, event) { - const modifiers = DocumentUtil.getActiveModifiersAndButtons(event); - const modifierKeys = DocumentUtil.getActiveModifiers(event); - return this._getMatchingInputGroup(pointerType, eventType, modifiers, modifierKeys); - } - - _getMatchingInputGroup(pointerType, eventType, modifiers, modifierKeys) { - let fallbackIndex = -1; - const modifiersSet = new Set(modifiers); - for (let i = 0, ii = this._inputs.length; i < ii; ++i) { - const input = this._inputs[i]; - const {include, exclude, types} = input; - if (!types.has(pointerType)) { continue; } - if (this._setHasAll(modifiersSet, include) && (exclude.length === 0 || !this._setHasAll(modifiersSet, exclude))) { - if (include.length > 0) { - return this._createInputInfo(input, pointerType, eventType, false, modifiers, modifierKeys); - } else if (fallbackIndex < 0) { - fallbackIndex = i; - } - } - } - - return ( - fallbackIndex >= 0 ? - this._createInputInfo(this._inputs[fallbackIndex], pointerType, eventType, true, modifiers, modifierKeys) : - null - ); - } - - _createInputInfo(input, pointerType, eventType, passive, modifiers, modifierKeys, detail) { - return {input, pointerType, eventType, passive, modifiers, modifierKeys, detail}; - } - - _setHasAll(set, values) { - for (const value of values) { - if (!set.has(value)) { - return false; - } - } - return true; - } - - _getInputArray(value) { - return ( - typeof value === 'string' ? - value.split(/[,;\s]+/).map((v) => v.trim().toLowerCase()).filter((v) => v.length > 0) : - [] - ); - } - - _getInputTypeSet({mouse, touch, pen}) { - const set = new Set(); - if (mouse) { set.add('mouse'); } - if (touch) { set.add('touch'); } - if (pen) { set.add('pen'); } - return set; - } - - _getPointerEventType(e) { - // Workaround for Firefox bug not detecting certain 'touch' events as 'pen' events. - const cachedPointerType = this._pointerIdTypeMap.get(e.pointerId); - return (typeof cachedPointerType !== 'undefined' ? cachedPointerType : e.pointerType); - } - - _constrainTextSource(textSource, includeSelector, excludeSelector, layoutAwareScan) { - let length = textSource.text().length; - while (length > 0) { - const nodes = textSource.getNodesInRange(); - if ( - (includeSelector !== null && !DocumentUtil.everyNodeMatchesSelector(nodes, includeSelector)) || - (excludeSelector !== null && DocumentUtil.anyNodeMatchesSelector(nodes, excludeSelector)) - ) { - --length; - textSource.setEndOffset(length, layoutAwareScan); - } else { - break; - } - } - } -} |