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