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67081368c7
This replaces the handling of the ZoomChangeUsingMouseWheel event with 2 new zoom events that trigger the actual zoom changes. As a side effect, this allows the mousewheel and zoom in/out key events to have an effect on Reader and PDFJS views as well. Differential Revision: https://phabricator.services.mozilla.com/D59260 --HG-- extra : moz-landing-system : lando
73 lines
2.5 KiB
JavaScript
73 lines
2.5 KiB
JavaScript
/* vim: set ts=2 sw=2 sts=2 et tw=80: */
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/* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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var EXPORTED_SYMBOLS = ["ZoomParent"];
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class ZoomParent extends JSWindowActorParent {
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receiveMessage(message) {
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let browser = this.browsingContext.top.embedderElement;
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if (!browser) {
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return;
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}
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let document = browser.ownerGlobal.document;
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/**
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* We respond to three types of messages:
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* 1) "Do" messages. These are requests from the ZoomChild that represent
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* action requests from the platform code. We send matching events on
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* to the frontend FullZoom actor that will take the requested action.
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* 2) ZoomChange messages. These are messages from the ZoomChild that
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* changes have been made to the zoom by the platform code. We create
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* events for other listeners so that they can also update state.
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* These messages will not be sent by the ZoomChild if the zoom change
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* originated in the ZoomParent actor.
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* 3) FullZoomResolutionStable. This is received after zoom is applied to
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* a Responsive Design Mode frame and it has reached a stable
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* resolution. We fire an event that is used by tests.
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**/
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switch (message.name) {
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case "FullZoomChange": {
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browser._fullZoom = message.data.value;
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let event = document.createEvent("Events");
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event.initEvent("FullZoomChange", true, false);
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browser.dispatchEvent(event);
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break;
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}
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case "FullZoomResolutionStable": {
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let event = document.createEvent("Events");
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event.initEvent("FullZoomResolutionStable", true, false);
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browser.dispatchEvent(event);
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break;
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}
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case "TextZoomChange": {
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browser._textZoom = message.data.value;
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let event = document.createEvent("Events");
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event.initEvent("TextZoomChange", true, false);
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browser.dispatchEvent(event);
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break;
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}
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case "DoZoomEnlargeBy10": {
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let event = document.createEvent("Events");
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event.initEvent("DoZoomEnlargeBy10", true, false);
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browser.dispatchEvent(event);
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break;
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}
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case "DoZoomReduceBy10": {
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let event = document.createEvent("Events");
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event.initEvent("DoZoomReduceBy10", true, false);
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browser.dispatchEvent(event);
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break;
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}
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}
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}
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}
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