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-rw-r--r--ext/mixed/js/text-scanner.js436
1 files changed, 229 insertions, 207 deletions
diff --git a/ext/mixed/js/text-scanner.js b/ext/mixed/js/text-scanner.js
index 0cd12cd7..b8688b08 100644
--- a/ext/mixed/js/text-scanner.js
+++ b/ext/mixed/js/text-scanner.js
@@ -21,47 +21,172 @@
* docRangeFromPoint
*/
-class TextScanner {
- constructor(node, ignoreElements, ignorePoints) {
- this.node = node;
- this.ignoreElements = ignoreElements;
- this.ignorePoints = ignorePoints;
-
- this.ignoreNodes = null;
-
- this.scanTimerPromise = null;
- this.causeCurrent = null;
- this.textSourceCurrent = null;
- this.pendingLookup = false;
- this.options = null;
-
- this.enabled = false;
- this.eventListeners = new EventListenerCollection();
-
- this.primaryTouchIdentifier = null;
- this.preventNextContextMenu = false;
- this.preventNextMouseDown = false;
- this.preventNextClick = false;
- this.preventScroll = false;
+class TextScanner extends EventDispatcher {
+ constructor({node, ignoreElements, ignorePoint, search}) {
+ super();
+ this._node = node;
+ this._ignoreElements = ignoreElements;
+ this._ignorePoint = ignorePoint;
+ this._search = search;
+
+ this._ignoreNodes = null;
+
+ this._causeCurrent = null;
+ this._scanTimerPromise = null;
+ this._textSourceCurrent = null;
+ this._textSourceCurrentSelected = false;
+ this._pendingLookup = false;
+ this._options = null;
+
+ this._enabled = false;
+ this._eventListeners = new EventListenerCollection();
+
+ this._primaryTouchIdentifier = null;
+ this._preventNextContextMenu = false;
+ this._preventNextMouseDown = false;
+ this._preventNextClick = false;
+ this._preventScroll = false;
+
+ this._canClearSelection = true;
}
- onMouseOver(e) {
- if (this.ignoreElements().includes(e.target)) {
- this.scanTimerClear();
+ get canClearSelection() {
+ return this._canClearSelection;
+ }
+
+ set canClearSelection(value) {
+ this._canClearSelection = value;
+ }
+
+ get ignoreNodes() {
+ return this._ignoreNodes;
+ }
+
+ set ignoreNodes(value) {
+ this._ignoreNodes = value;
+ }
+
+ get causeCurrent() {
+ return this._causeCurrent;
+ }
+
+ setEnabled(enabled) {
+ this._eventListeners.removeAllEventListeners();
+ this._enabled = enabled;
+ if (this._enabled) {
+ this._hookEvents();
+ } else {
+ this.clearSelection(true);
+ }
+ }
+
+ setOptions(options) {
+ this._options = options;
+ }
+
+ async searchAt(x, y, cause) {
+ try {
+ this._scanTimerClear();
+
+ if (this._pendingLookup) {
+ return;
+ }
+
+ if (typeof this._ignorePoint === 'function' && await this._ignorePoint(x, y)) {
+ return;
+ }
+
+ const textSource = docRangeFromPoint(x, y, this._options.scanning.deepDomScan);
+ try {
+ if (this._textSourceCurrent !== null && this._textSourceCurrent.equals(textSource)) {
+ return;
+ }
+
+ this._pendingLookup = true;
+ const result = await this._search(textSource, cause);
+ if (result !== null) {
+ this._causeCurrent = cause;
+ this.setCurrentTextSource(textSource);
+ }
+ this._pendingLookup = false;
+ } finally {
+ if (textSource !== null) {
+ textSource.cleanup();
+ }
+ }
+ } catch (e) {
+ yomichan.logError(e);
+ }
+ }
+
+ getTextSourceContent(textSource, length) {
+ const clonedTextSource = textSource.clone();
+
+ clonedTextSource.setEndOffset(length);
+
+ if (this._ignoreNodes !== null && clonedTextSource.range) {
+ length = clonedTextSource.text().length;
+ while (clonedTextSource.range && length > 0) {
+ const nodes = TextSourceRange.getNodesInRange(clonedTextSource.range);
+ if (!TextSourceRange.anyNodeMatchesSelector(nodes, this._ignoreNodes)) {
+ break;
+ }
+ --length;
+ clonedTextSource.setEndOffset(length);
+ }
+ }
+
+ return clonedTextSource.text();
+ }
+
+ clearSelection(passive) {
+ if (!this._canClearSelection) { return; }
+ if (this._textSourceCurrent !== null) {
+ if (this._textSourceCurrentSelected) {
+ this._textSourceCurrent.deselect();
+ }
+ this._textSourceCurrent = null;
+ this._textSourceCurrentSelected = false;
+ }
+ this.trigger('clearSelection', {passive});
+ }
+
+ getCurrentTextSource() {
+ return this._textSourceCurrent;
+ }
+
+ setCurrentTextSource(textSource) {
+ this._textSourceCurrent = textSource;
+ if (this._options.scanning.selectText) {
+ this._textSourceCurrent.select();
+ this._textSourceCurrentSelected = true;
+ } else {
+ this._textSourceCurrentSelected = false;
+ }
+ }
+
+ // Private
+
+ _onMouseOver(e) {
+ if (this._ignoreElements().includes(e.target)) {
+ this._scanTimerClear();
}
}
- onMouseMove(e) {
- this.scanTimerClear();
+ _onMouseMove(e) {
+ this._scanTimerClear();
- if (this.pendingLookup || DOM.isMouseButtonDown(e, 'primary')) {
+ if (this._pendingLookup || DOM.isMouseButtonDown(e, 'primary')) {
return;
}
- const scanningOptions = this.options.scanning;
+ const modifiers = DOM.getActiveModifiers(e);
+ this.trigger('activeModifiersChanged', {modifiers});
+
+ const scanningOptions = this._options.scanning;
const scanningModifier = scanningOptions.modifier;
if (!(
- TextScanner.isScanningModifierPressed(scanningModifier, e) ||
+ this._isScanningModifierPressed(scanningModifier, e) ||
(scanningOptions.middleMouse && DOM.isMouseButtonDown(e, 'auxiliary'))
)) {
return;
@@ -69,7 +194,7 @@ class TextScanner {
const search = async () => {
if (scanningModifier === 'none') {
- if (!await this.scanTimerWait()) {
+ if (!await this._scanTimerWait()) {
// Aborted
return;
}
@@ -81,112 +206,110 @@ class TextScanner {
search();
}
- onMouseDown(e) {
- if (this.preventNextMouseDown) {
- this.preventNextMouseDown = false;
- this.preventNextClick = true;
+ _onMouseDown(e) {
+ if (this._preventNextMouseDown) {
+ this._preventNextMouseDown = false;
+ this._preventNextClick = true;
e.preventDefault();
e.stopPropagation();
return false;
}
if (DOM.isMouseButtonDown(e, 'primary')) {
- this.scanTimerClear();
- this.onSearchClear(true);
+ this._scanTimerClear();
+ this.clearSelection(false);
}
}
- onMouseOut() {
- this.scanTimerClear();
+ _onMouseOut() {
+ this._scanTimerClear();
}
- onClick(e) {
- if (this.preventNextClick) {
- this.preventNextClick = false;
+ _onClick(e) {
+ if (this._preventNextClick) {
+ this._preventNextClick = false;
e.preventDefault();
e.stopPropagation();
return false;
}
}
- onAuxClick() {
- this.preventNextContextMenu = false;
+ _onAuxClick() {
+ this._preventNextContextMenu = false;
}
- onContextMenu(e) {
- if (this.preventNextContextMenu) {
- 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) {
+ _onTouchStart(e) {
+ if (this._primaryTouchIdentifier !== null || e.changedTouches.length === 0) {
return;
}
- this.preventScroll = false;
- this.preventNextContextMenu = false;
- this.preventNextMouseDown = false;
- this.preventNextClick = false;
+ this._preventScroll = false;
+ this._preventNextContextMenu = false;
+ this._preventNextMouseDown = false;
+ this._preventNextClick = false;
const primaryTouch = e.changedTouches[0];
if (DOM.isPointInSelection(primaryTouch.clientX, primaryTouch.clientY, window.getSelection())) {
return;
}
- this.primaryTouchIdentifier = primaryTouch.identifier;
+ this._primaryTouchIdentifier = primaryTouch.identifier;
- if (this.pendingLookup) {
+ if (this._pendingLookup) {
return;
}
- const textSourceCurrentPrevious = this.textSourceCurrent !== null ? this.textSourceCurrent.clone() : null;
+ const textSourceCurrentPrevious = this._textSourceCurrent !== null ? this._textSourceCurrent.clone() : null;
this.searchAt(primaryTouch.clientX, primaryTouch.clientY, 'touchStart')
.then(() => {
if (
- this.textSourceCurrent === null ||
- this.textSourceCurrent.equals(textSourceCurrentPrevious)
+ this._textSourceCurrent === null ||
+ this._textSourceCurrent.equals(textSourceCurrentPrevious)
) {
return;
}
- this.preventScroll = true;
- this.preventNextContextMenu = true;
- this.preventNextMouseDown = true;
+ this._preventScroll = true;
+ this._preventNextContextMenu = true;
+ this._preventNextMouseDown = true;
});
}
- onTouchEnd(e) {
+ _onTouchEnd(e) {
if (
- this.primaryTouchIdentifier === null ||
- TextScanner.getTouch(e.changedTouches, this.primaryTouchIdentifier) === null
+ this._primaryTouchIdentifier === null ||
+ this._getTouch(e.changedTouches, this._primaryTouchIdentifier) === null
) {
return;
}
- 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.
- // this.preventNextContextMenu = false;
- // this.preventNextMouseDown = false;
+ 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);
+ _onTouchCancel(e) {
+ this._onTouchEnd(e);
}
- onTouchMove(e) {
- if (!this.preventScroll || !e.cancelable || this.primaryTouchIdentifier === null) {
+ _onTouchMove(e) {
+ if (!this._preventScroll || !e.cancelable || this._primaryTouchIdentifier === null) {
return;
}
- const primaryTouch = TextScanner.getTouch(e.changedTouches, this.primaryTouchIdentifier);
+ const primaryTouch = this._getTouch(e.changedTouches, this._primaryTouchIdentifier);
if (primaryTouch === null) {
return;
}
@@ -196,171 +319,70 @@ class TextScanner {
e.preventDefault(); // Disable scroll
}
- async onSearchSource(_textSource, _cause) {
- throw new Error('Override me');
- }
-
- onError(error) {
- logError(error, false);
- }
-
- async scanTimerWait() {
- const delay = this.options.scanning.delay;
+ async _scanTimerWait() {
+ const delay = this._options.scanning.delay;
const promise = promiseTimeout(delay, true);
- this.scanTimerPromise = promise;
+ this._scanTimerPromise = promise;
try {
return await promise;
} finally {
- if (this.scanTimerPromise === promise) {
- this.scanTimerPromise = null;
+ if (this._scanTimerPromise === promise) {
+ this._scanTimerPromise = null;
}
}
}
- scanTimerClear() {
- if (this.scanTimerPromise !== null) {
- this.scanTimerPromise.resolve(false);
- this.scanTimerPromise = null;
+ _scanTimerClear() {
+ if (this._scanTimerPromise !== null) {
+ this._scanTimerPromise.resolve(false);
+ this._scanTimerPromise = null;
}
}
- setEnabled(enabled, canEnable) {
- if (enabled && canEnable) {
- if (!this.enabled) {
- this.hookEvents();
- this.enabled = true;
- }
- } else {
- if (this.enabled) {
- this.eventListeners.removeAllEventListeners();
- this.enabled = false;
- }
- this.onSearchClear(false);
- }
- }
-
- hookEvents() {
- let eventListenerInfos = this.getMouseEventListeners();
- if (this.options.scanning.touchInputEnabled) {
- eventListenerInfos = eventListenerInfos.concat(this.getTouchEventListeners());
+ _hookEvents() {
+ const eventListenerInfos = this._getMouseEventListeners();
+ if (this._options.scanning.touchInputEnabled) {
+ eventListenerInfos.push(...this._getTouchEventListeners());
}
for (const [node, type, listener, options] of eventListenerInfos) {
- this.eventListeners.addEventListener(node, type, listener, options);
+ this._eventListeners.addEventListener(node, type, listener, options);
}
}
- getMouseEventListeners() {
+ _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, '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)]
];
}
- getTouchEventListeners() {
+ _getTouchEventListeners() {
return [
- [this.node, 'click', this.onClick.bind(this)],
- [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)]
+ [this._node, 'click', this._onClick.bind(this)],
+ [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)]
];
}
- setOptions(options, canEnable=true) {
- this.options = options;
- this.setEnabled(this.options.general.enable, canEnable);
- }
-
- async searchAt(x, y, cause) {
- try {
- this.scanTimerClear();
-
- if (this.pendingLookup) {
- return;
- }
-
- for (const ignorePointFn of this.ignorePoints) {
- if (await ignorePointFn(x, y)) {
- return;
- }
- }
-
- const textSource = docRangeFromPoint(x, y, this.options.scanning.deepDomScan);
- try {
- if (this.textSourceCurrent !== null && this.textSourceCurrent.equals(textSource)) {
- return;
- }
-
- this.pendingLookup = true;
- const result = await this.onSearchSource(textSource, cause);
- if (result !== null) {
- this.causeCurrent = cause;
- this.textSourceCurrent = textSource;
- if (this.options.scanning.selectText) {
- textSource.select();
- }
- }
- this.pendingLookup = false;
- } finally {
- if (textSource !== null) {
- textSource.cleanup();
- }
- }
- } catch (e) {
- this.onError(e);
- }
- }
-
- setTextSourceScanLength(textSource, length) {
- textSource.setEndOffset(length);
- if (this.ignoreNodes === null || !textSource.range) {
- return;
- }
-
- length = textSource.text().length;
- while (textSource.range && length > 0) {
- const nodes = TextSourceRange.getNodesInRange(textSource.range);
- if (!TextSourceRange.anyNodeMatchesSelector(nodes, this.ignoreNodes)) {
- break;
- }
- --length;
- textSource.setEndOffset(length);
- }
- }
-
- onSearchClear(_) {
- if (this.textSourceCurrent !== null) {
- if (this.options.scanning.selectText) {
- this.textSourceCurrent.deselect();
- }
- this.textSourceCurrent = null;
- }
- }
-
- getCurrentTextSource() {
- return this.textSourceCurrent;
- }
-
- setCurrentTextSource(textSource) {
- return this.textSourceCurrent = textSource;
- }
-
- static isScanningModifierPressed(scanningModifier, mouseEvent) {
+ _isScanningModifierPressed(scanningModifier, mouseEvent) {
switch (scanningModifier) {
case 'alt': return mouseEvent.altKey;
case 'ctrl': return mouseEvent.ctrlKey;
case 'shift': return mouseEvent.shiftKey;
+ case 'meta': return mouseEvent.metaKey;
case 'none': return true;
default: return false;
}
}
- static getTouch(touchList, identifier) {
+ _getTouch(touchList, identifier) {
for (const touch of touchList) {
if (touch.identifier === identifier) {
return touch;