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/* 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";
this.EXPORTED_SYMBOLS = ["E10SUtils"];
const {interfaces: Ci, utils: Cu, classes: Cc} = Components;
Cu.import("resource://gre/modules/Services.jsm");
function getAboutModule(aURL) {
// Needs to match NS_GetAboutModuleName
let moduleName = aURL.path.replace(/[#?].*/, "").toLowerCase();
let contract = "@mozilla.org/network/protocol/about;1?what=" + moduleName;
try {
return Cc[contract].getService(Ci.nsIAboutModule);
}
catch (e) {
// Either the about module isn't defined or it is broken. In either case
// ignore it.
return null;
}
}
this.E10SUtils = {
canLoadURIInProcess: function(aURL, aProcess) {
// loadURI in browser.xml treats null as about:blank
if (!aURL)
aURL = "about:blank";
// Javascript urls can load in any process, they apply to the current document
if (aURL.startsWith("javascript:"))
return true;
let processIsRemote = aProcess == Ci.nsIXULRuntime.PROCESS_TYPE_CONTENT;
let canLoadRemote = true;
let mustLoadRemote = true;
if (aURL.startsWith("about:")) {
let url = Services.io.newURI(aURL, null, null);
let module = getAboutModule(url);
// If the module doesn't exist then an error page will be loading, that
// should be ok to load in either process
if (module) {
let flags = module.getURIFlags(url);
canLoadRemote = !!(flags & Ci.nsIAboutModule.URI_CAN_LOAD_IN_CHILD);
mustLoadRemote = !!(flags & Ci.nsIAboutModule.URI_MUST_LOAD_IN_CHILD);
}
}
if (aURL.startsWith("chrome:")) {
let url;
try {
// This can fail for invalid Chrome URIs, in which case we will end up
// not loading anything anyway.
url = Services.io.newURI(aURL, null, null);
} catch (ex) {
canLoadRemote = true;
mustLoadRemote = false;
}
if (url) {
let chromeReg = Cc["@mozilla.org/chrome/chrome-registry;1"].
getService(Ci.nsIXULChromeRegistry);
canLoadRemote = chromeReg.canLoadURLRemotely(url);
mustLoadRemote = chromeReg.mustLoadURLRemotely(url);
}
}
if (aURL.startsWith("moz-extension:")) {
canLoadRemote = false;
mustLoadRemote = false;
}
if (aURL.startsWith("view-source:")) {
return this.canLoadURIInProcess(aURL.substr("view-source:".length), aProcess);
}
if (mustLoadRemote)
return processIsRemote;
if (!canLoadRemote && processIsRemote)
return false;
return true;
},
shouldLoadURI: function(aDocShell, aURI, aReferrer) {
// Inner frames should always load in the current process
if (aDocShell.QueryInterface(Ci.nsIDocShellTreeItem).sameTypeParent)
return true;
// If the URI can be loaded in the current process then continue
return this.canLoadURIInProcess(aURI.spec, Services.appinfo.processType);
},
redirectLoad: function(aDocShell, aURI, aReferrer, aFreshProcess) {
// Retarget the load to the correct process
let messageManager = aDocShell.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIContentFrameMessageManager);
let sessionHistory = aDocShell.getInterface(Ci.nsIWebNavigation).sessionHistory;
messageManager.sendAsyncMessage("Browser:LoadURI", {
loadOptions: {
uri: aURI.spec,
flags: Ci.nsIWebNavigation.LOAD_FLAGS_NONE,
referrer: aReferrer ? aReferrer.spec : null,
reloadInFreshProcess: !!aFreshProcess,
},
historyIndex: sessionHistory.requestedIndex,
});
return false;
},
wrapHandlingUserInput: function(aWindow, aIsHandling, aCallback) {
var handlingUserInput;
try {
handlingUserInput = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils)
.setHandlingUserInput(aIsHandling);
aCallback();
} finally {
handlingUserInput.destruct();
}
},
};