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-rw-r--r--ext/mixed/js/text-scanner.js260
1 files changed, 135 insertions, 125 deletions
diff --git a/ext/mixed/js/text-scanner.js b/ext/mixed/js/text-scanner.js
index cc81f758..2ed6c3b9 100644
--- a/ext/mixed/js/text-scanner.js
+++ b/ext/mixed/js/text-scanner.js
@@ -24,27 +24,27 @@
class TextScanner extends EventDispatcher {
constructor(node, ignoreElements, ignorePoints) {
super();
- this.node = node;
- this.ignoreElements = ignoreElements;
- this.ignorePoints = ignorePoints;
+ this._node = node;
+ this._ignoreElements = ignoreElements;
+ this._ignorePoints = ignorePoints;
- this.ignoreNodes = null;
+ this._ignoreNodes = null;
- this.scanTimerPromise = null;
- this.causeCurrent = null;
- this.textSourceCurrent = null;
- this.textSourceCurrentSelected = false;
- this.pendingLookup = false;
- this.options = 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._enabled = false;
+ this._eventListeners = new EventListenerCollection();
- this.primaryTouchIdentifier = null;
- this.preventNextContextMenu = false;
- this.preventNextMouseDown = false;
- this.preventNextClick = false;
- this.preventScroll = false;
+ this._primaryTouchIdentifier = null;
+ this._preventNextContextMenu = false;
+ this._preventNextMouseDown = false;
+ this._preventNextClick = false;
+ this._preventScroll = false;
this._canClearSelection = true;
}
@@ -57,26 +57,38 @@ class TextScanner extends EventDispatcher {
this._canClearSelection = value;
}
- onMouseOver(e) {
- if (this.ignoreElements().includes(e.target)) {
- this.scanTimerClear();
+ get ignoreNodes() {
+ return this._ignoreNodes;
+ }
+
+ set ignoreNodes(value) {
+ this._ignoreNodes = value;
+ }
+
+ get causeCurrent() {
+ return this._causeCurrent;
+ }
+
+ _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 modifiers = DOM.getActiveModifiers(e);
this.trigger('activeModifiersChanged', {modifiers});
- const scanningOptions = this.options.scanning;
+ 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;
@@ -84,7 +96,7 @@ class TextScanner extends EventDispatcher {
const search = async () => {
if (scanningModifier === 'none') {
- if (!await this.scanTimerWait()) {
+ if (!await this._scanTimerWait()) {
// Aborted
return;
}
@@ -96,112 +108,110 @@ class TextScanner extends EventDispatcher {
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._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;
}
@@ -215,99 +225,99 @@ class TextScanner extends EventDispatcher {
throw new Error('Override me');
}
- 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) {
- this.eventListeners.removeAllEventListeners();
- this.enabled = enabled;
- if (this.enabled) {
- this.hookEvents();
+ this._eventListeners.removeAllEventListeners();
+ this._enabled = enabled;
+ if (this._enabled) {
+ this._hookEvents();
} else {
this.clearSelection(true);
}
}
- hookEvents() {
- const eventListenerInfos = this.getMouseEventListeners();
- if (this.options.scanning.touchInputEnabled) {
- eventListenerInfos.push(...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) {
- this.options = options;
+ this._options = options;
}
async searchAt(x, y, cause) {
try {
- this.scanTimerClear();
+ this._scanTimerClear();
- if (this.pendingLookup) {
+ if (this._pendingLookup) {
return;
}
- for (const ignorePointFn of this.ignorePoints) {
+ for (const ignorePointFn of this._ignorePoints) {
if (await ignorePointFn(x, y)) {
return;
}
}
- const textSource = docRangeFromPoint(x, y, this.options.scanning.deepDomScan);
+ const textSource = docRangeFromPoint(x, y, this._options.scanning.deepDomScan);
try {
- if (this.textSourceCurrent !== null && this.textSourceCurrent.equals(textSource)) {
+ if (this._textSourceCurrent !== null && this._textSourceCurrent.equals(textSource)) {
return;
}
- this.pendingLookup = true;
+ this._pendingLookup = true;
const result = await this.onSearchSource(textSource, cause);
if (result !== null) {
- this.causeCurrent = cause;
+ this._causeCurrent = cause;
this.setCurrentTextSource(textSource);
}
- this.pendingLookup = false;
+ this._pendingLookup = false;
} finally {
if (textSource !== null) {
textSource.cleanup();
@@ -323,11 +333,11 @@ class TextScanner extends EventDispatcher {
clonedTextSource.setEndOffset(length);
- if (this.ignoreNodes !== null && clonedTextSource.range) {
+ 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)) {
+ if (!TextSourceRange.anyNodeMatchesSelector(nodes, this._ignoreNodes)) {
break;
}
--length;
@@ -340,31 +350,31 @@ class TextScanner extends EventDispatcher {
clearSelection(passive) {
if (!this._canClearSelection) { return; }
- if (this.textSourceCurrent !== null) {
- if (this.textSourceCurrentSelected) {
- this.textSourceCurrent.deselect();
+ if (this._textSourceCurrent !== null) {
+ if (this._textSourceCurrentSelected) {
+ this._textSourceCurrent.deselect();
}
- this.textSourceCurrent = null;
- this.textSourceCurrentSelected = false;
+ this._textSourceCurrent = null;
+ this._textSourceCurrentSelected = false;
}
this.trigger('clearSelection', {passive});
}
getCurrentTextSource() {
- return this.textSourceCurrent;
+ return this._textSourceCurrent;
}
setCurrentTextSource(textSource) {
- this.textSourceCurrent = textSource;
- if (this.options.scanning.selectText) {
- this.textSourceCurrent.select();
- this.textSourceCurrentSelected = true;
+ this._textSourceCurrent = textSource;
+ if (this._options.scanning.selectText) {
+ this._textSourceCurrent.select();
+ this._textSourceCurrentSelected = true;
} else {
- this.textSourceCurrentSelected = false;
+ this._textSourceCurrentSelected = false;
}
}
- static isScanningModifierPressed(scanningModifier, mouseEvent) {
+ _isScanningModifierPressed(scanningModifier, mouseEvent) {
switch (scanningModifier) {
case 'alt': return mouseEvent.altKey;
case 'ctrl': return mouseEvent.ctrlKey;
@@ -375,7 +385,7 @@ class TextScanner extends EventDispatcher {
}
}
- static getTouch(touchList, identifier) {
+ _getTouch(touchList, identifier) {
for (const touch of touchList) {
if (touch.identifier === identifier) {
return touch;