Add presentation events to "appData".

static/js/directives/presentation.js

@@ -22,7 +22,7 @@
 "use strict";
 define(['jquery', 'underscore', 'text!partials/presentation.html', 'bigscreen'], function($, _, template, BigScreen) {
 
-	return ["$window", "mediaStream", "fileUpload", "fileDownload", "alertify", "translation", "randomGen", "fileData", function($window, mediaStream, fileUpload, fileDownload, alertify, translation, randomGen, fileData) {
+	return ["$window", "mediaStream", "fileUpload", "fileDownload", "alertify", "translation", "randomGen", "fileData", "appData", function($window, mediaStream, fileUpload, fileDownload, alertify, translation, randomGen, fileData, appData) {
 
 		var SUPPORTED_TYPES = {
 			// rendered by pdfcanvas directive
@@ -743,8 +743,10 @@ define(['jquery', 'underscore', 'text!partials/presentation.html', 'bigscreen'],
 			$scope.$watch("layout.presentation", function(newval, oldval) {
 				if (newval && !oldval) {
 					$scope.showPresentation();
+					appData.e.triggerHandler("presentationEnabled", [true]);
 				} else if (!newval && oldval) {
 					$scope.hidePresentation();
+					appData.e.triggerHandler("presentationEnabled", [false]);
 				}
 			});
 
@@ -754,6 +756,18 @@ define(['jquery', 'underscore', 'text!partials/presentation.html', 'bigscreen'],
 				}
 			});
 
+			$scope.$watch("currentPresentation", function(newval, oldval) {
+				if (oldval !== newval) {
+					appData.e.triggerHandler("presentationSelected", [newval]);
+				}
+			});
+
+			$scope.$watch("currentPageNumber", function(newval, oldval) {
+				if (oldval !== newval) {
+					appData.e.triggerHandler("presentationPageChanged", [newval]);
+				}
+			});
+
 		}];
 
 		var compile = function(tElement, tAttr) {

static/js/services/appdata.js

@@ -48,6 +48,16 @@ define(["jquery"], function($) {
 	//     loaded (bool)    : True if something was loaded, else false.
 	//     user_settings (map) : User map which was loaded.
 	//
+	// - presentationEnabled(event, enabled)
+	//     enabled (bool)   : True if presentation mode is enabled, else false.
+	//
+	// - presentationSelected(event, presentation)
+	//     presentation (object) : Currently active presentation, `null` if none
+	//                             is active.
+	//
+	// - presentationPageChanged(event, page)
+	//     page (number)    : Currently active page in the presentation.
+	//
 	// Other appData properties:
 	//
 	// - language (string) : ISO language code of active language.