michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: let Ci = Components.interfaces;
michael@0: let Cu = Components.utils;
michael@0: 
michael@0: Cu.import('resource://gre/modules/XPCOMUtils.jsm');
michael@0: Cu.import('resource://gre/modules/Services.jsm');
michael@0: Cu.import('resource://gre/modules/DOMRequestHelper.jsm');
michael@0: 
michael@0: XPCOMUtils.defineLazyModuleGetter(this, 'GlobalSimulatorScreen',
michael@0:                                   'resource://gre/modules/GlobalSimulatorScreen.jsm');
michael@0: 
michael@0: let DEBUG_PREFIX = 'SimulatorScreen.js - ';
michael@0: function debug() {
michael@0:   //dump(DEBUG_PREFIX + Array.slice(arguments) + '\n');
michael@0: }
michael@0: 
michael@0: function fireOrientationEvent(window) {
michael@0:   let e = new window.Event('mozorientationchange');
michael@0:   window.screen.dispatchEvent(e);
michael@0: }
michael@0: 
michael@0: function hookScreen(window) {
michael@0:   let nodePrincipal = window.document.nodePrincipal;
michael@0:   let origin = nodePrincipal.origin;
michael@0:   if (nodePrincipal.appStatus == nodePrincipal.APP_STATUS_NOT_INSTALLED) {
michael@0:     Cu.reportError('deny mozLockOrientation:' + origin + 'is not installed');
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   let screen = window.wrappedJSObject.screen;
michael@0: 
michael@0:   screen.mozLockOrientation = function (orientation) {
michael@0:     debug('mozLockOrientation:', orientation, 'from', origin);
michael@0: 
michael@0:     // Normalize and do some checks against orientation input
michael@0:     if (typeof(orientation) == 'string') {
michael@0:       orientation = [orientation];
michael@0:     }
michael@0: 
michael@0:     function isInvalidOrientationString(str) {
michael@0:       return typeof(str) != 'string' ||
michael@0:         !str.match(/^default$|^(portrait|landscape)(-(primary|secondary))?$/);
michael@0:     }
michael@0:     if (!Array.isArray(orientation) ||
michael@0:         orientation.some(isInvalidOrientationString)) {
michael@0:       Cu.reportError('Invalid orientation "' + orientation + '"');
michael@0:       return false;
michael@0:     }
michael@0: 
michael@0:     GlobalSimulatorScreen.lock(orientation);
michael@0: 
michael@0:     return true;
michael@0:   };
michael@0: 
michael@0:   screen.mozUnlockOrientation = function() {
michael@0:     debug('mozOrientationUnlock from', origin);
michael@0:     GlobalSimulatorScreen.unlock();
michael@0:     return true;
michael@0:   };
michael@0: 
michael@0:   Object.defineProperty(screen, 'width', {
michael@0:     get: function () GlobalSimulatorScreen.width
michael@0:   });
michael@0:   Object.defineProperty(screen, 'height', {
michael@0:     get: function () GlobalSimulatorScreen.height
michael@0:   });
michael@0:   Object.defineProperty(screen, 'mozOrientation', {
michael@0:     get: function () GlobalSimulatorScreen.mozOrientation
michael@0:   });
michael@0: }
michael@0: 
michael@0: function SimulatorScreen() {}
michael@0: SimulatorScreen.prototype = {
michael@0:   classID:         Components.ID('{c83c02c0-5d43-4e3e-987f-9173b313e880}'),
michael@0:   QueryInterface:  XPCOMUtils.generateQI([Ci.nsIObserver,
michael@0:                                           Ci.nsISupportsWeakReference]),
michael@0:   _windows: new Map(),
michael@0: 
michael@0:   observe: function (subject, topic, data) {
michael@0:     let windows = this._windows;
michael@0:     switch (topic) {
michael@0:       case 'profile-after-change':
michael@0:         Services.obs.addObserver(this, 'document-element-inserted', false);
michael@0:         Services.obs.addObserver(this, 'simulator-orientation-change', false);
michael@0:         Services.obs.addObserver(this, 'inner-window-destroyed', false);
michael@0:         break;
michael@0: 
michael@0:       case 'document-element-inserted':
michael@0:         let window = subject.defaultView;
michael@0:         if (!window) {
michael@0:           return;
michael@0:         }
michael@0: 
michael@0:         hookScreen(window);
michael@0: 
michael@0:         var id = window.QueryInterface(Ci.nsIInterfaceRequestor)
michael@0:                        .getInterface(Ci.nsIDOMWindowUtils)
michael@0:                        .currentInnerWindowID;
michael@0:         windows.set(id, window);
michael@0:         break;
michael@0: 
michael@0:       case 'inner-window-destroyed':
michael@0:         var id = subject.QueryInterface(Ci.nsISupportsPRUint64).data;
michael@0:         windows.delete(id);
michael@0:         break;
michael@0: 
michael@0:       case 'simulator-orientation-change':
michael@0:         windows.forEach(fireOrientationEvent);
michael@0:         break;
michael@0:     }
michael@0:   }
michael@0: };
michael@0: 
michael@0: this.NSGetFactory = XPCOMUtils.generateNSGetFactory([SimulatorScreen]);