gecko-dev/browser/actors/DOMFullscreenChild.jsm

82 строки
3.0 KiB
JavaScript

/* vim: set ts=2 sw=2 sts=2 et tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
var EXPORTED_SYMBOLS = ["DOMFullscreenChild"];
ChromeUtils.import("resource://gre/modules/ActorChild.jsm");
class DOMFullscreenChild extends ActorChild {
receiveMessage(aMessage) {
let windowUtils = this.content && this.content.windowUtils;
switch (aMessage.name) {
case "DOMFullscreen:Entered": {
this._lastTransactionId = windowUtils.lastTransactionId;
if (!windowUtils.handleFullscreenRequests() &&
!this.content.document.fullscreenElement) {
// If we don't actually have any pending fullscreen request
// to handle, neither we have been in fullscreen, tell the
// parent to just exit.
this.mm.sendAsyncMessage("DOMFullscreen:Exit");
}
break;
}
case "DOMFullscreen:CleanUp": {
// If we've exited fullscreen at this point, no need to record
// transaction id or call exit fullscreen. This is especially
// important for non-e10s, since in that case, it is possible
// that no more paint would be triggered after this point.
if (this.content.document.fullscreenElement && windowUtils) {
this._lastTransactionId = windowUtils.lastTransactionId;
windowUtils.exitFullscreen();
}
break;
}
}
}
handleEvent(aEvent) {
switch (aEvent.type) {
case "MozDOMFullscreen:Request": {
this.mm.sendAsyncMessage("DOMFullscreen:Request");
break;
}
case "MozDOMFullscreen:NewOrigin": {
this.mm.sendAsyncMessage("DOMFullscreen:NewOrigin", {
originNoSuffix: aEvent.target.nodePrincipal.originNoSuffix,
});
break;
}
case "MozDOMFullscreen:Exit": {
this.mm.sendAsyncMessage("DOMFullscreen:Exit");
break;
}
case "MozDOMFullscreen:Entered":
case "MozDOMFullscreen:Exited": {
this.mm.addEventListener("MozAfterPaint", this);
if (!this.content || !this.content.document.fullscreenElement) {
// If we receive any fullscreen change event, and find we are
// actually not in fullscreen, also ask the parent to exit to
// ensure that the parent always exits fullscreen when we do.
this.mm.sendAsyncMessage("DOMFullscreen:Exit");
}
break;
}
case "MozAfterPaint": {
// Only send Painted signal after we actually finish painting
// the transition for the fullscreen change.
// Note that this._lastTransactionId is not set when in non-e10s
// mode, so we need to check that explicitly.
if (!this._lastTransactionId ||
aEvent.transactionId > this._lastTransactionId) {
this.mm.removeEventListener("MozAfterPaint", this);
this.mm.sendAsyncMessage("DOMFullscreen:Painted");
}
break;
}
}
}
}