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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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uriloader/exthandler/nsWebHandlerApp.js Normal file
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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/. */
////////////////////////////////////////////////////////////////////////////////
//// Constants
const Ci = Components.interfaces;
const Cr = Components.results;
const Cc = Components.classes;
const Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/NetUtil.jsm");
////////////////////////////////////////////////////////////////////////////////
//// nsWebHandler class
function nsWebHandlerApp() {}
nsWebHandlerApp.prototype = {
//////////////////////////////////////////////////////////////////////////////
//// nsWebHandler
classDescription: "A web handler for protocols and content",
classID: Components.ID("8b1ae382-51a9-4972-b930-56977a57919d"),
contractID: "@mozilla.org/uriloader/web-handler-app;1",
_name: null,
_detailedDescription: null,
_uriTemplate: null,
//////////////////////////////////////////////////////////////////////////////
//// nsIHandlerApp
get name() {
return this._name;
},
set name(aName) {
this._name = aName;
},
get detailedDescription() {
return this._detailedDescription;
},
set detailedDescription(aDesc) {
this._detailedDescription = aDesc;
},
equals: function(aHandlerApp) {
if (!aHandlerApp)
throw Cr.NS_ERROR_NULL_POINTER;
if (aHandlerApp instanceof Ci.nsIWebHandlerApp &&
aHandlerApp.uriTemplate &&
this.uriTemplate &&
aHandlerApp.uriTemplate == this.uriTemplate)
return true;
return false;
},
launchWithURI: function nWHA__launchWithURI(aURI, aWindowContext) {
// XXX need to strip passwd & username from URI to handle, as per the
// WhatWG HTML5 draft. nsSimpleURL, which is what we're going to get,
// can't do this directly. Ideally, we'd fix nsStandardURL to make it
// possible to turn off all of its quirks handling, and use that...
// encode the URI to be handled
var escapedUriSpecToHandle = encodeURIComponent(aURI.spec);
// insert the encoded URI and create the object version
var uriSpecToSend = this.uriTemplate.replace("%s", escapedUriSpecToHandle);
var ioService = Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
var uriToSend = ioService.newURI(uriSpecToSend, null, null);
// if we have a window context, use the URI loader to load there
if (aWindowContext) {
try {
// getInterface throws if the object doesn't implement the given
// interface, so this try/catch statement is more of an if.
// If aWindowContext refers to a remote docshell, send the load
// request to the correct process.
aWindowContext.getInterface(Ci.nsIRemoteWindowContext)
.openURI(uriToSend);
return;
} catch (e) {
if (e.result != Cr.NS_NOINTERFACE) {
throw e;
}
}
// create a channel from this URI
var channel = NetUtil.newChannel({
uri: uriToSend,
loadUsingSystemPrincipal: true
});
channel.loadFlags = Ci.nsIChannel.LOAD_DOCUMENT_URI;
// load the channel
var uriLoader = Cc["@mozilla.org/uriloader;1"].
getService(Ci.nsIURILoader);
// XXX ideally, whether to pass the IS_CONTENT_PREFERRED flag should be
// passed in from above. Practically, the flag is probably a reasonable
// default since browsers don't care much, and link click is likely to be
// the more interesting case for non-browser apps. See
// <https://bugzilla.mozilla.org/show_bug.cgi?id=392957#c9> for details.
uriLoader.openURI(channel, Ci.nsIURILoader.IS_CONTENT_PREFERRED,
aWindowContext);
return;
}
// since we don't have a window context, hand it off to a browser
var windowMediator = Cc["@mozilla.org/appshell/window-mediator;1"].
getService(Ci.nsIWindowMediator);
// get browser dom window
var browserDOMWin = windowMediator.getMostRecentWindow("navigator:browser")
.QueryInterface(Ci.nsIDOMChromeWindow)
.browserDOMWindow;
// if we got an exception, there are several possible reasons why:
// a) this gecko embedding doesn't provide an nsIBrowserDOMWindow
// implementation (i.e. doesn't support browser-style functionality),
// so we need to kick the URL out to the OS default browser. This is
// the subject of bug 394479.
// b) this embedding does provide an nsIBrowserDOMWindow impl, but
// there doesn't happen to be a browser window open at the moment; one
// should be opened. It's not clear whether this situation will really
// ever occur in real life. If it does, the only API that I can find
// that seems reasonably likely to work for most embedders is the
// command line handler.
// c) something else went wrong
//
// it's not clear how one would differentiate between the three cases
// above, so for now we don't catch the exception
// openURI
browserDOMWin.openURI(uriToSend,
null, // no window.opener
Ci.nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW,
Ci.nsIBrowserDOMWindow.OPEN_NEW);
return;
},
//////////////////////////////////////////////////////////////////////////////
//// nsIWebHandlerApp
get uriTemplate() {
return this._uriTemplate;
},
set uriTemplate(aURITemplate) {
this._uriTemplate = aURITemplate;
},
//////////////////////////////////////////////////////////////////////////////
//// nsISupports
QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebHandlerApp, Ci.nsIHandlerApp])
};
////////////////////////////////////////////////////////////////////////////////
//// Module
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([nsWebHandlerApp]);