mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-02 10:00:54 +00:00
208 lines
10 KiB
JavaScript
208 lines
10 KiB
JavaScript
/* 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/. */
|
|
|
|
this.EXPORTED_SYMBOLS = [
|
|
"FrameManager"
|
|
];
|
|
|
|
let FRAME_SCRIPT = "chrome://marionette/content/marionette-listener.js";
|
|
Cu.import("resource://gre/modules/Services.jsm");
|
|
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
|
|
|
|
Cu.import("resource://gre/modules/Log.jsm");
|
|
let logger = Log.repository.getLogger("Marionette");
|
|
|
|
//list of OOP frames that has the frame script loaded
|
|
let remoteFrames = [];
|
|
|
|
/**
|
|
* An object representing a frame that Marionette has loaded a
|
|
* frame script in.
|
|
*/
|
|
function MarionetteRemoteFrame(windowId, frameId) {
|
|
this.windowId = windowId; //outerWindowId relative to main process
|
|
this.frameId = frameId; //actual frame relative to windowId's frames list
|
|
this.targetFrameId = this.frameId; //assigned FrameId, used for messaging
|
|
};
|
|
|
|
/**
|
|
* The FrameManager will maintain the list of Out Of Process (OOP) frames and will handle
|
|
* frame switching between them.
|
|
* It handles explicit frame switching (switchToFrame), and implicit frame switching, which
|
|
* occurs when a modal dialog is triggered in B2G.
|
|
*
|
|
*/
|
|
this.FrameManager = function FrameManager(server) {
|
|
//messageManager maintains the messageManager for the current process' chrome frame or the global message manager
|
|
this.currentRemoteFrame = null; //holds a member of remoteFrames (for an OOP frame) or null (for the main process)
|
|
this.previousRemoteFrame = null; //frame we'll need to restore once interrupt is gone
|
|
this.handledModal = false; //set to true when we have been interrupted by a modal
|
|
this.server = server; // a reference to the marionette server
|
|
};
|
|
|
|
FrameManager.prototype = {
|
|
QueryInterface: XPCOMUtils.generateQI([Ci.nsIMessageListener,
|
|
Ci.nsISupportsWeakReference]),
|
|
|
|
/**
|
|
* Receives all messages from content messageManager
|
|
*/
|
|
receiveMessage: function FM_receiveMessage(message) {
|
|
switch (message.name) {
|
|
case "MarionetteFrame:getInterruptedState":
|
|
// This will return true if the calling frame was interrupted by a modal dialog
|
|
if (this.previousRemoteFrame) {
|
|
let interruptedFrame = Services.wm.getOuterWindowWithId(this.previousRemoteFrame.windowId);//get the frame window of the interrupted frame
|
|
if (this.previousRemoteFrame.frameId != null) {
|
|
interruptedFrame = interruptedFrame.document.getElementsByTagName("iframe")[this.previousRemoteFrame.frameId]; //find the OOP frame
|
|
}
|
|
//check if the interrupted frame is the same as the calling frame
|
|
if (interruptedFrame.src == message.target.src) {
|
|
return {value: this.handledModal};
|
|
}
|
|
}
|
|
else if (this.currentRemoteFrame == null) {
|
|
// we get here if previousRemoteFrame and currentRemoteFrame are null, ie: if we're in a non-OOP process, or we haven't switched into an OOP frame, in which case, handledModal can't be set to true.
|
|
return {value: this.handledModal};
|
|
}
|
|
return {value: false};
|
|
case "MarionetteFrame:handleModal":
|
|
/*
|
|
* handleModal is called when we need to switch frames to the main process due to a modal dialog interrupt.
|
|
*/
|
|
// If previousRemoteFrame was set, that means we switched into a remote frame.
|
|
// If this is the case, then we want to switch back into the system frame.
|
|
// If it isn't the case, then we're in a non-OOP environment, so we don't need to handle remote frames
|
|
let isLocal = true;
|
|
if (this.currentRemoteFrame != null) {
|
|
isLocal = false;
|
|
this.removeMessageManagerListeners(this.currentRemoteFrame.messageManager.get());
|
|
//store the previous frame so we can switch back to it when the modal is dismissed
|
|
this.previousRemoteFrame = this.currentRemoteFrame;
|
|
//by setting currentRemoteFrame to null, it signifies we're in the main process
|
|
this.currentRemoteFrame = null;
|
|
this.server.messageManager = Cc["@mozilla.org/globalmessagemanager;1"]
|
|
.getService(Ci.nsIMessageBroadcaster);
|
|
}
|
|
this.handledModal = true;
|
|
this.server.sendOk(this.server.command_id);
|
|
return {value: isLocal};
|
|
case "MarionetteFrame:getCurrentFrameId":
|
|
if (this.currentRemoteFrame != null) {
|
|
return this.currentRemoteFrame.frameId;
|
|
}
|
|
}
|
|
},
|
|
|
|
//This is just 'switch to OOP frame'. We're handling this here so we can maintain a list of remoteFrames.
|
|
switchToFrame: function FM_switchToFrame(message) {
|
|
// Switch to a remote frame.
|
|
let frameWindow = Services.wm.getOuterWindowWithId(message.json.win); //get the original frame window
|
|
let oopFrame = frameWindow.document.getElementsByTagName("iframe")[message.json.frame]; //find the OOP frame
|
|
let mm = oopFrame.QueryInterface(Ci.nsIFrameLoaderOwner).frameLoader.messageManager; //get the OOP frame's mm
|
|
|
|
// See if this frame already has our frame script loaded in it; if so,
|
|
// just wake it up.
|
|
for (let i = 0; i < remoteFrames.length; i++) {
|
|
let frame = remoteFrames[i];
|
|
let frameMessageManager = frame.messageManager.get();
|
|
logger.info("trying remote frame " + i);
|
|
try {
|
|
frameMessageManager.sendAsyncMessage("aliveCheck", {});
|
|
}
|
|
catch(e) {
|
|
if (e.result == Components.results.NS_ERROR_NOT_INITIALIZED) {
|
|
logger.info("deleting frame");
|
|
remoteFrames.splice(i, 1);
|
|
continue;
|
|
}
|
|
}
|
|
if (frameMessageManager == mm) {
|
|
this.currentRemoteFrame = frame;
|
|
this.addMessageManagerListeners(mm);
|
|
mm.sendAsyncMessage("Marionette:restart", {});
|
|
return;
|
|
}
|
|
}
|
|
|
|
// If we get here, then we need to load the frame script in this frame,
|
|
// and set the frame's ChromeMessageSender as the active message manager the server will listen to
|
|
this.addMessageManagerListeners(mm);
|
|
logger.info("frame-manager load script: " + mm.toString());
|
|
mm.loadFrameScript(FRAME_SCRIPT, true, true);
|
|
let aFrame = new MarionetteRemoteFrame(message.json.win, message.json.frame);
|
|
aFrame.messageManager = Cu.getWeakReference(mm);
|
|
remoteFrames.push(aFrame);
|
|
this.currentRemoteFrame = aFrame;
|
|
},
|
|
|
|
/*
|
|
* This function handles switching back to the frame that was interrupted by the modal dialog.
|
|
* This function gets called by the interrupted frame once the dialog is dismissed and the frame resumes its process
|
|
*/
|
|
switchToModalOrigin: function FM_switchToModalOrigin() {
|
|
//only handle this if we indeed switched out of the modal's originating frame
|
|
if (this.previousRemoteFrame != null) {
|
|
this.currentRemoteFrame = this.previousRemoteFrame;
|
|
this.addMessageManagerListeners(this.currentRemoteFrame.messageManager.get());
|
|
}
|
|
this.handledModal = false;
|
|
},
|
|
|
|
/**
|
|
* Adds message listeners to the server, listening for messages from content frame scripts.
|
|
* It also adds a "MarionetteFrame:getInterruptedState" message listener to the FrameManager,
|
|
* so the frame manager's state can be checked by the frame
|
|
*
|
|
* @param object messageManager
|
|
* The messageManager object (ChromeMessageBroadcaster or ChromeMessageSender)
|
|
* to which the listeners should be added.
|
|
*/
|
|
addMessageManagerListeners: function MDA_addMessageManagerListeners(messageManager) {
|
|
messageManager.addWeakMessageListener("Marionette:ok", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:done", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:error", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:emitTouchEvent", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:log", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:register", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:runEmulatorCmd", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:runEmulatorShell", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:shareData", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:switchToModalOrigin", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:switchToFrame", this.server);
|
|
messageManager.addWeakMessageListener("Marionette:switchedToFrame", this.server);
|
|
messageManager.addWeakMessageListener("MarionetteFrame:handleModal", this);
|
|
messageManager.addWeakMessageListener("MarionetteFrame:getCurrentFrameId", this);
|
|
messageManager.addWeakMessageListener("MarionetteFrame:getInterruptedState", this);
|
|
},
|
|
|
|
/**
|
|
* Removes listeners for messages from content frame scripts.
|
|
* We do not remove the "MarionetteFrame:getInterruptedState" or the
|
|
* "Marioentte:switchToModalOrigin" message listener,
|
|
* because we want to allow all known frames to contact the frame manager so that
|
|
* it can check if it was interrupted, and if so, it will call switchToModalOrigin
|
|
* when its process gets resumed.
|
|
*
|
|
* @param object messageManager
|
|
* The messageManager object (ChromeMessageBroadcaster or ChromeMessageSender)
|
|
* from which the listeners should be removed.
|
|
*/
|
|
removeMessageManagerListeners: function MDA_removeMessageManagerListeners(messageManager) {
|
|
messageManager.removeWeakMessageListener("Marionette:ok", this.server);
|
|
messageManager.removeWeakMessageListener("Marionette:done", this.server);
|
|
messageManager.removeWeakMessageListener("Marionette:error", this.server);
|
|
messageManager.removeWeakMessageListener("Marionette:log", this.server);
|
|
messageManager.removeWeakMessageListener("Marionette:shareData", this.server);
|
|
messageManager.removeWeakMessageListener("Marionette:register", this.server);
|
|
messageManager.removeWeakMessageListener("Marionette:runEmulatorCmd", this.server);
|
|
messageManager.removeWeakMessageListener("Marionette:runEmulatorShell", this.server);
|
|
messageManager.removeWeakMessageListener("Marionette:switchToFrame", this.server);
|
|
messageManager.removeWeakMessageListener("Marionette:switchedToFrame", this.server);
|
|
messageManager.removeWeakMessageListener("MarionetteFrame:handleModal", this);
|
|
messageManager.removeWeakMessageListener("MarionetteFrame:getCurrentFrameId", this);
|
|
},
|
|
|
|
};
|