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-rw-r--r--ext/mixed/js/text-scanner.js982
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diff --git a/ext/mixed/js/text-scanner.js b/ext/mixed/js/text-scanner.js
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-/*
- * 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;
- }
- }
- }
-}