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 file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: "use strict"
michael@0: 
michael@0: const Cc = Components.classes;
michael@0: const Ci = Components.interfaces;
michael@0: const 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: 
michael@0: XPCOMUtils.defineLazyModuleGetter(this, "SystemAppProxy",
michael@0:                                   "resource://gre/modules/SystemAppProxy.jsm");
michael@0: 
michael@0: function ActivitiesDialog() {
michael@0:   this._id = 0;
michael@0: 
michael@0:   this.activities = [];
michael@0: }
michael@0: 
michael@0: ActivitiesDialog.prototype = {
michael@0:   run: function ap_run() {
michael@0:     let id = "activity-choice" + this._id++;
michael@0:     let activity = this.activities.shift();
michael@0: 
michael@0:     let choices = [];
michael@0:     activity.list.forEach(function(item) {
michael@0:       choices.push({ manifest: item.manifest, icon: item.icon });
michael@0:     });
michael@0: 
michael@0: 
michael@0:     // Keep up the frond-end of an activity choice. The messages contains
michael@0:     // a list of {names, icons} for applications able to handle this particular
michael@0:     // activity. The front-end should display a UI to pick one.
michael@0:     let detail = {
michael@0:       type: "activity-choice",
michael@0:       id: id,
michael@0:       name: activity.name,
michael@0:       choices: choices
michael@0:     };
michael@0: 
michael@0:     // Listen the resulting choice from the front-end. If there is no choice,
michael@0:     // let's return -1, which means the user has cancelled the dialog.
michael@0:     SystemAppProxy.addEventListener("mozContentEvent", function act_getChoice(evt) {
michael@0:       if (evt.detail.id != id)
michael@0:         return;
michael@0: 
michael@0:       SystemAppProxy.removeEventListener("mozContentEvent", act_getChoice);
michael@0:       activity.callback.handleEvent(evt.detail.value !== undefined
michael@0:                                       ? evt.detail.value
michael@0:                                       : -1);
michael@0:     });
michael@0: 
michael@0:     SystemAppProxy.dispatchEvent(detail);
michael@0:   },
michael@0: 
michael@0:   chooseActivity: function ap_chooseActivity(aName, aActivities, aCallback) {
michael@0:     this.activities.push({
michael@0:       name: aName,
michael@0:       list: aActivities,
michael@0:       callback: aCallback
michael@0:     });
michael@0:     Services.tm.currentThread.dispatch(this, Ci.nsIEventTarget.DISPATCH_NORMAL);
michael@0:   },
michael@0: 
michael@0:   classID: Components.ID("{70a83123-7467-4389-a309-3e81c74ad002}"),
michael@0: 
michael@0:   QueryInterface: XPCOMUtils.generateQI([Ci.nsIActivityUIGlue, Ci.nsIRunnable])
michael@0: }
michael@0: 
michael@0: this.NSGetFactory = XPCOMUtils.generateNSGetFactory([ActivitiesDialog]);
michael@0: