The Tor Browser: b2g/chrome/content/runapp.js@6474c204b198 (annotated)

b2g/chrome/content/runapp.js@6474c204b198 (annotated)

b2g/chrome/content/runapp.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 "use strict";
 // runapp.js:
 // Provide a --runapp APPNAME command-line option.
 let runAppObj;
 window.addEventListener('load', function() {
   if (!window.arguments) {
     return;
   }
   // Get the command line arguments that were passed to the b2g client
   let args = window.arguments[0].QueryInterface(Ci.nsICommandLine);
   let appname;
   // - Check if the argument is present before doing any work.
   try {
     // Returns null if the argument was not specified.  Throws
     // NS_ERROR_INVALID_ARG if there is no parameter specified (because
     // it was the last argument or the next argument starts with '-').
     // However, someone could still explicitly pass an empty argument!
     appname = args.handleFlagWithParam('runapp', false);
   } catch(e) {
     // treat a missing parameter like an empty parameter (=> show usage)
     appname = '';
   }
   // not specified, bail.
   if (appname === null) {
     return;
   }
   runAppObj = new AppRunner(appname);
   Services.obs.addObserver(runAppObj, 'browser-ui-startup-complete', false);
 });
 window.addEventListener('unload', function() {
   if (runAppObj) {
     Services.obs.removeObserver(runAppObj, 'browser-ui-startup-complete');
   }
 });
 function AppRunner(aName) {
   this._req = null;
   this._appName = aName;
 }
 AppRunner.prototype = {
   observe: function(aSubject, aTopic, aData) {
     if (aTopic == 'browser-ui-startup-complete') {
       this.doRunApp();
     }
   },
   doRunApp: function() {
     // - Get the list of apps since the parameter was specified
     this._req = navigator.mozApps.mgmt.getAll();
     this._req.onsuccess = this.getAllSuccess.bind(this);
     this._req.onerror = this.getAllError.bind(this);
   },
   getAllSuccess: function() {
     let apps = this._req.result;
     function findAppWithName(name) {
       let normalizedSearchName = name.replace(/[- ]+/g, '').toLowerCase();
       for (let i = 0; i < apps.length; i++) {
         let app = apps[i];
         let normalizedAppName =
           app.manifest.name.replace(/[- ]+/g, '').toLowerCase();
         if (normalizedSearchName === normalizedAppName) {
           return app;
         }
       }
       return null;
     }
     function usageAndDie(justApps) {
       if (!justApps)
         dump(
           'The --runapp argument specifies an app to automatically run at\n'+
           'startup.  We match against app names per their manifest and \n' +
           'ignoring capitalization, dashes, and whitespace.\n' +
           '\nThe system will load as usual except the lock screen will be ' +
           'automatically be disabled.\n\n' +
           'Known apps:\n');
       for (let i = 0; i < apps.length; i++) {
         dump('  ' + apps[i].manifest.name + '\n');
       }
       // Exit the b2g client
       Services.startup.quit(Ci.nsIAppStartup.eAttemptQuit);
     }
     if (this._appName === '') {
       usageAndDie();
       return;
     }
     let app = findAppWithName(this._appName);
     if (!app) {
       dump('Could not find app: "' + this._appName + '". Maybe you meant one of:\n');
       usageAndDie(true);
       return;
     }
     let setReq =
       navigator.mozSettings.createLock().set({'lockscreen.enabled': false});
     setReq.onsuccess = function() {
       // give the event loop 100ms to disable the lock screen
       window.setTimeout(function() {
         dump('--runapp launching app: ' + app.manifest.name + '\n');
         app.launch();
       }, 100);
     };
     setReq.onerror = function() {
       dump('--runapp failed to disable lock-screen.  Giving up.\n');
     };
     dump('--runapp found app: ' + app.manifest.name +
          ', disabling lock screen...\n');
   },
   getAllError: function() {
     dump('Problem getting the list of all apps!');
   }
 };