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Diffstat (limited to 'uriloader/exthandler/nsWebHandlerApp.js')
| -rw-r--r-- | uriloader/exthandler/nsWebHandlerApp.js | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/uriloader/exthandler/nsWebHandlerApp.js b/uriloader/exthandler/nsWebHandlerApp.js new file mode 100644 index 000000000..65d600f55 --- /dev/null +++ b/uriloader/exthandler/nsWebHandlerApp.js @@ -0,0 +1,172 @@ +/* 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]); + |