mirror of
https://github.com/classilla/tenfourfox.git
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175 lines
5.0 KiB
JavaScript
175 lines
5.0 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* global Components, XPCOMUtils, Utils, Logger, GestureSettings,
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GestureTracker */
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/* exported PointerRelay, PointerAdapter */
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'use strict';
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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this.EXPORTED_SYMBOLS = ['PointerRelay', 'PointerAdapter']; // jshint ignore:line
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Cu.import('resource://gre/modules/XPCOMUtils.jsm');
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XPCOMUtils.defineLazyModuleGetter(this, 'Utils', // jshint ignore:line
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'resource://gre/modules/accessibility/Utils.jsm');
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XPCOMUtils.defineLazyModuleGetter(this, 'Logger', // jshint ignore:line
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'resource://gre/modules/accessibility/Utils.jsm');
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XPCOMUtils.defineLazyModuleGetter(this, 'GestureSettings', // jshint ignore:line
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'resource://gre/modules/accessibility/Gestures.jsm');
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XPCOMUtils.defineLazyModuleGetter(this, 'GestureTracker', // jshint ignore:line
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'resource://gre/modules/accessibility/Gestures.jsm');
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// The virtual touch ID generated by a mouse event.
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const MOUSE_ID = 'mouse';
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// Synthesized touch ID.
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const SYNTH_ID = -1;
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var PointerRelay = { // jshint ignore:line
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/**
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* A mapping of events we should be intercepting. Entries with a value of
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* |true| are used for compiling high-level gesture events. Entries with a
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* value of |false| are cancelled and do not propogate to content.
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*/
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get _eventsOfInterest() {
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delete this._eventsOfInterest;
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switch (Utils.widgetToolkit) {
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case 'android':
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this._eventsOfInterest = {
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'touchstart' : true,
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'touchmove' : true,
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'touchend' : true };
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break;
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case 'gonk':
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this._eventsOfInterest = {
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'touchstart' : true,
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'touchmove' : true,
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'touchend' : true,
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'mousedown' : false,
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'mousemove' : false,
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'mouseup': false,
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'click': false };
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break;
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default:
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// Desktop.
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this._eventsOfInterest = {
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'mousemove' : true,
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'mousedown' : true,
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'mouseup': true,
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'click': false
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};
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if ('ontouchstart' in Utils.win) {
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for (let eventType of ['touchstart', 'touchmove', 'touchend']) {
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this._eventsOfInterest[eventType] = true;
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}
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}
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break;
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}
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return this._eventsOfInterest;
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},
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_eventMap: {
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'touchstart' : 'pointerdown',
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'mousedown' : 'pointerdown',
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'touchmove' : 'pointermove',
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'mousemove' : 'pointermove',
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'touchend' : 'pointerup',
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'mouseup': 'pointerup'
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},
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start: function PointerRelay_start(aOnPointerEvent) {
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Logger.debug('PointerRelay.start');
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this.onPointerEvent = aOnPointerEvent;
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for (let eventType in this._eventsOfInterest) {
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Utils.win.addEventListener(eventType, this, true, true);
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}
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},
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stop: function PointerRelay_stop() {
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Logger.debug('PointerRelay.stop');
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delete this.lastPointerMove;
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delete this.onPointerEvent;
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for (let eventType in this._eventsOfInterest) {
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Utils.win.removeEventListener(eventType, this, true, true);
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}
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},
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handleEvent: function PointerRelay_handleEvent(aEvent) {
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// Don't bother with chrome mouse events.
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if (Utils.MozBuildApp === 'browser' &&
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aEvent.view.top instanceof Ci.nsIDOMChromeWindow) {
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return;
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}
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if (aEvent.mozInputSource === Ci.nsIDOMMouseEvent.MOZ_SOURCE_UNKNOWN ||
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aEvent.isSynthesized) {
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// Ignore events that are scripted or clicks from the a11y API.
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return;
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}
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let changedTouches = aEvent.changedTouches || [{
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identifier: MOUSE_ID,
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screenX: aEvent.screenX,
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screenY: aEvent.screenY,
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target: aEvent.target
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}];
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if (Utils.widgetToolkit === 'android' &&
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changedTouches.length === 1 && changedTouches[0].identifier === 1) {
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return;
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}
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if (changedTouches.length === 1 &&
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changedTouches[0].identifier === SYNTH_ID) {
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return;
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}
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aEvent.preventDefault();
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aEvent.stopImmediatePropagation();
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let type = aEvent.type;
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if (!this._eventsOfInterest[type]) {
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return;
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}
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let pointerType = this._eventMap[type];
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this.onPointerEvent({
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type: pointerType,
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points: Array.prototype.map.call(changedTouches,
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function mapTouch(aTouch) {
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return {
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identifier: aTouch.identifier,
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x: aTouch.screenX,
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y: aTouch.screenY
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};
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}
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)
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});
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}
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};
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this.PointerAdapter = { // jshint ignore:line
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start: function PointerAdapter_start() {
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Logger.debug('PointerAdapter.start');
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GestureTracker.reset();
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PointerRelay.start(this.handleEvent);
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},
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stop: function PointerAdapter_stop() {
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Logger.debug('PointerAdapter.stop');
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PointerRelay.stop();
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GestureTracker.reset();
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},
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handleEvent: function PointerAdapter_handleEvent(aDetail) {
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let timeStamp = Date.now();
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GestureTracker.handle(aDetail, timeStamp);
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}
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};
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