typescript-backbone: Add routing

Fixes #1487

examples/typescript-backbone/index.html

@@ -92,6 +92,17 @@ https://github.com/documentcloud/backbone/blob/master/examples/todos/index.html
 					<span class="word"><%= remaining == 1 ? 'item' : 'items' %></span> left
 				</span>
 			<% } %>
+			<ul class="filters">
+				<li>
+					<a class="selected" href="#/">All</a>
+				</li>
+				<li>
+					<a href="#/active">Active</a>
+				</li>
+				<li>
+					<a href="#/completed">Completed</a>
+				</li>
+			</ul>
 			<% if (completed) { %>
 				<span class="todo-clear">
 					<button class="clear-completed">Clear completed</button>

examples/typescript-backbone/js/app.js

@@ -39,11 +39,10 @@ DEALINGS IN THE SOFTWARE.
 --------------------------------------------------------------------------------------- */
 // Todos.js
 // https://github.com/documentcloud/backbone/blob/master/examples/todos/todos.js
-var __extends = this.__extends || function (d, b) {
+var __extends = (this && this.__extends) || function (d, b) {
     for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
     function __() { this.constructor = d; }
-    __.prototype = b.prototype;
-    d.prototype = new __();
+    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
 };
 // Todo Model
 // ----------
@@ -112,6 +111,7 @@ var TodoList = (function (_super) {
 })(Backbone.Collection);
 // Create our global collection of **Todos**.
 var Todos = new TodoList();
+var taskFilter;
 // Todo Item View
 // --------------
 // The DOM element for a todo item...
@@ -132,13 +132,17 @@ var TodoView = (function (_super) {
         _super.call(this, options);
         // Cache the template function for a single item.
         this.template = _.template($('#item-template').html());
-        _.bindAll(this, 'render', 'close', 'remove');
+        _.bindAll(this, 'render', 'close', 'remove', 'toggleVisible');
         this.model.bind('change', this.render);
         this.model.bind('destroy', this.remove);
+        this.model.bind('visible', this.toggleVisible);
     }
     // Re-render the contents of the todo item.
     TodoView.prototype.render = function () {
-        this.$el.html(this.template(this.model.toJSON())).toggleClass('completed', this.model.get('completed'));
+        this.$el
+            .html(this.template(this.model.toJSON()))
+            .toggleClass('completed', this.model.get('completed'));
+        this.toggleVisible();
         this.input = this.$('.todo-input');
         return this;
     };
@@ -146,6 +150,12 @@ var TodoView = (function (_super) {
     TodoView.prototype.toggleDone = function () {
         this.model.toggle();
     };
+    TodoView.prototype.toggleVisible = function () {
+        var completed = this.model.get('completed');
+        var hidden = (taskFilter === 'completed' && !completed) ||
+            (taskFilter === 'active' && completed);
+        this.$el.toggleClass('hidden', hidden);
+    };
     // Switch this view into `'editing'` mode, displaying the input field.
     TodoView.prototype.edit = function () {
         this.$el.addClass('editing');
@@ -184,6 +194,25 @@ var TodoView = (function (_super) {
     TodoView.ESC_KEY = 27;
     return TodoView;
 })(Backbone.View);
+// Todo Router
+// -----------
+var TodoRouter = (function (_super) {
+    __extends(TodoRouter, _super);
+    function TodoRouter() {
+        _super.call(this);
+        this.routes = {
+            '*filter': 'setFilter'
+        };
+        this._bindRoutes();
+    }
+    TodoRouter.prototype.setFilter = function (param) {
+        if (param === void 0) { param = ''; }
+        // Trigger a collection filter event, causing hiding/unhiding
+        // of Todo view items
+        Todos.trigger('filter', param);
+    };
+    return TodoRouter;
+})(Backbone.Router);
 // The Application
 // ---------------
 // Our overall **AppView** is the top-level piece of UI.
@@ -203,7 +232,7 @@ var AppView = (function (_super) {
         // At initialization we bind to the relevant events on the `Todos`
         // collection, when items are added or changed. Kick things off by
         // loading any preexisting todos that might be saved in *localStorage*.
-        _.bindAll(this, 'addOne', 'addAll', 'render', 'toggleAllComplete');
+        _.bindAll(this, 'addOne', 'addAll', 'render', 'toggleAllComplete', 'filter');
         this.input = this.$('.new-todo');
         this.allCheckbox = this.$('.toggle-all')[0];
         this.mainElement = this.$('.main')[0];
@@ -212,7 +241,12 @@ var AppView = (function (_super) {
         Todos.bind('add', this.addOne);
         Todos.bind('reset', this.addAll);
         Todos.bind('all', this.render);
+        Todos.bind('change:completed', this.filterOne);
+        Todos.bind('filter', this.filter);
         Todos.fetch();
+        // Initialize the router, showing the selected view
+        var todoRouter = new TodoRouter();
+        Backbone.history.start();
     }
     // Re-rendering the App just means refreshing the statistics -- the rest
     // of the app doesn't change.
@@ -227,6 +261,10 @@ var AppView = (function (_super) {
                 completed: completed,
                 remaining: remaining
             }));
+            this.$('.filters li a')
+                .removeClass('selected')
+                .filter('[href="#/' + (taskFilter || '') + '"]')
+                .addClass('selected');
         }
         else {
             this.mainElement.style.display = 'none';
@@ -244,6 +282,17 @@ var AppView = (function (_super) {
     AppView.prototype.addAll = function () {
         Todos.each(this.addOne);
     };
+    // Filter out completed/remaining tasks
+    AppView.prototype.filter = function (criteria) {
+        taskFilter = criteria;
+        this.filterAll();
+    };
+    AppView.prototype.filterOne = function (todo) {
+        todo.trigger('visible');
+    };
+    AppView.prototype.filterAll = function () {
+        Todos.each(this.filterOne);
+    };
     // Generate the attributes for a new Todo item.
     AppView.prototype.newAttributes = function () {
         return {

examples/typescript-backbone/js/app.ts

@@ -46,6 +46,8 @@ DEALINGS IN THE SOFTWARE.
 // to persist Backbone models within your browser.
 
 declare var $: any;
+
+// TODO: Use DefinitelyTyped rather than ad-hoc definition here
 declare module Backbone {
 	export class Model {
 		constructor (attr? , opts? );
@@ -56,6 +58,7 @@ declare module Backbone {
 		destroy(): void;
 		bind(ev: string, f: Function, ctx?: any): void;
 		toJSON(): any;
+		trigger(eventName: string, ...args: any[]): any;
 	}
 	export class Collection {
 		constructor (models? , opts? );
@@ -69,6 +72,7 @@ declare module Backbone {
 		last(n: number): any[];
 		filter(f: (elem: any) => any): Collection;
 		without(...values: any[]): Collection;
+		trigger(eventName: string, ...args: any[]): any;
 	}
 	export class View {
 		constructor (options? );
@@ -85,6 +89,16 @@ declare module Backbone {
 
 		static extend: any;
 	}
+	export class Router {
+		constructor (routes?: any );
+		routes: any;
+	}
+	export class History {
+		start(options?: any);
+		navigate(fragment: string, options: any);
+		pushState();
+	}
+	export var history: History;
 }
 declare var _: any;
 declare var Store: any;
@@ -161,7 +175,8 @@ class TodoList extends Backbone.Collection {
 }
 
 // Create our global collection of **Todos**.
-var Todos = new TodoList();
+const Todos = new TodoList();
+var taskFilter;
 
 // Todo Item View
 // --------------
@@ -200,9 +215,10 @@ class TodoView extends Backbone.View {
 		// Cache the template function for a single item.
 		this.template = _.template($('#item-template').html());
 
-		_.bindAll(this, 'render', 'close', 'remove');
+		_.bindAll(this, 'render', 'close', 'remove', 'toggleVisible');
 		this.model.bind('change', this.render);
 		this.model.bind('destroy', this.remove);
+		this.model.bind('visible', this.toggleVisible);
 	}
 
 	// Re-render the contents of the todo item.
@@ -210,7 +226,7 @@ class TodoView extends Backbone.View {
 		this.$el
 			.html(this.template(this.model.toJSON()))
 			.toggleClass('completed', this.model.get('completed'));
-
+		this.toggleVisible();
 		this.input = this.$('.todo-input');
 		return this;
 	}
@@ -220,6 +236,14 @@ class TodoView extends Backbone.View {
 		this.model.toggle();
 	}
 
+	toggleVisible() {
+		var completed =  this.model.get('completed');
+		var hidden =
+			(taskFilter === 'completed' && !completed) ||
+			(taskFilter === 'active' && completed);
+		this.$el.toggleClass('hidden', hidden);
+	}
+
 	// Switch this view into `'editing'` mode, displaying the input field.
 	edit() {
 		this.$el.addClass('editing');
@@ -261,6 +285,28 @@ class TodoView extends Backbone.View {
 
 }
 
+// Todo Router
+// -----------
+
+class TodoRouter extends Backbone.Router {
+
+	routes = {
+		'*filter': 'setFilter'
+	};
+
+	constructor() {
+		super();
+		(<any>this)._bindRoutes();
+	}
+
+	setFilter(param: string = '') {
+		// Trigger a collection filter event, causing hiding/unhiding
+		// of Todo view items
+		Todos.trigger('filter', param);
+	}
+}
+
+
 // The Application
 // ---------------
 
@@ -289,7 +335,7 @@ class AppView extends Backbone.View {
 		// At initialization we bind to the relevant events on the `Todos`
 		// collection, when items are added or changed. Kick things off by
 		// loading any preexisting todos that might be saved in *localStorage*.
-		_.bindAll(this, 'addOne', 'addAll', 'render', 'toggleAllComplete');
+		_.bindAll(this, 'addOne', 'addAll', 'render', 'toggleAllComplete', 'filter');
 
 		this.input = this.$('.new-todo');
 		this.allCheckbox = this.$('.toggle-all')[0];
@@ -300,8 +346,13 @@ class AppView extends Backbone.View {
 		Todos.bind('add', this.addOne);
 		Todos.bind('reset', this.addAll);
 		Todos.bind('all', this.render);
-
+		Todos.bind('change:completed', this.filterOne);
+		Todos.bind('filter', this.filter);
 		Todos.fetch();
+
+		// Initialize the router, showing the selected view
+		const todoRouter = new TodoRouter();
+		Backbone.history.start();
 	}
 
 	// Re-rendering the App just means refreshing the statistics -- the rest
@@ -319,6 +370,12 @@ class AppView extends Backbone.View {
 				completed: completed,
 				remaining: remaining
 			}));
+
+			this.$('.filters li a')
+				.removeClass('selected')
+				.filter('[href="#/' + (taskFilter || '') + '"]')
+				.addClass('selected');
+
 		} else {
 			this.mainElement.style.display = 'none';
 			this.footerElement.style.display = 'none';
@@ -329,7 +386,7 @@ class AppView extends Backbone.View {
 
 	// Add a single todo item to the list by creating a view for it, and
 	// appending its element to the `<ul>`.
-	addOne(todo) {
+	addOne(todo: Todo) {
 		var view = new TodoView({ model: todo });
 		this.$('.todo-list').append(view.render().el);
 	}
@@ -339,6 +396,20 @@ class AppView extends Backbone.View {
 		Todos.each(this.addOne);
 	}
 
+	// Filter out completed/remaining tasks
+	filter(criteria: string) {
+		taskFilter = criteria;
+		this.filterAll();
+	}
+
+	filterOne(todo: Todo) {
+		todo.trigger('visible');
+	}
+
+	filterAll() {
+		Todos.each(this.filterOne);
+	}
+
 	// Generate the attributes for a new Todo item.
 	newAttributes() {
 		return {