/** * @license Copyright (c) 2003-2015, CKSource - Frederico Knabben. All rights reserved. * For licensing, see LICENSE.md. */ /* global document, Event, MouseEvent */ /* bender-tags: core, ui */ 'use strict'; var modules = bender.amd.require( 'utils', 'ui/domemittermixin', 'ui/view', 'emittermixin' ); var emitter, view, node; bender.tools.createSinonSandbox(); var getEmitterInstance = () => modules.utils.extend( {}, modules.emittermixin ); var getViewInstance = () => new modules[ 'ui/view' ](); var getDOMNodeInstance = () => document.createElement( 'div' ); function updateEmitterMixinInstance() { emitter = getEmitterInstance(); } function updateViewInstance() { view = getViewInstance(); } function updateDOMNodeInstance() { node = getDOMNodeInstance(); } beforeEach( updateEmitterMixinInstance ); beforeEach( updateViewInstance ); beforeEach( updateDOMNodeInstance ); describe( 'listenTo', function() { it( 'should listen to EmitterMixin events', function() { var spy = bender.sinon.spy(); view.listenTo( emitter, 'test', spy ); emitter.fire( 'test' ); sinon.assert.calledOnce( spy ); } ); it( 'should listen to native DOM events', function() { var spy = bender.sinon.spy(); view.listenTo( node, 'test', spy ); var event = new Event( 'test' ); node.dispatchEvent( event ); sinon.assert.calledOnce( spy ); } ); } ); describe( 'stopListening', function() { it( 'should stop listening to a specific event callback', function() { var spy1 = bender.sinon.spy(); var spy2 = bender.sinon.spy(); view.listenTo( node, 'event1', spy1 ); view.listenTo( node, 'event2', spy2 ); node.dispatchEvent( new Event( 'event1' ) ); node.dispatchEvent( new Event( 'event2' ) ); view.stopListening( node, 'event1', spy1 ); node.dispatchEvent( new Event( 'event1' ) ); node.dispatchEvent( new Event( 'event2' ) ); sinon.assert.calledOnce( spy1 ); sinon.assert.calledTwice( spy2 ); } ); it( 'should stop listening to an specific event', function() { var spy1a = bender.sinon.spy(); var spy1b = bender.sinon.spy(); var spy2 = bender.sinon.spy(); view.listenTo( node, 'event1', spy1a ); view.listenTo( node, 'event1', spy1b ); view.listenTo( node, 'event2', spy2 ); node.dispatchEvent( new Event( 'event1' ) ); node.dispatchEvent( new Event( 'event2' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledOnce( spy2 ); view.stopListening( node, 'event1' ); node.dispatchEvent( new Event( 'event1' ) ); node.dispatchEvent( new Event( 'event2' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledTwice( spy2 ); } ); it( 'should stop listening to all events from a specific node', function() { var spy1 = bender.sinon.spy(); var spy2 = bender.sinon.spy(); view.listenTo( node, 'event1', spy1 ); view.listenTo( node, 'event2', spy2 ); node.dispatchEvent( new Event( 'event1' ) ); node.dispatchEvent( new Event( 'event2' ) ); view.stopListening( node ); node.dispatchEvent( new Event( 'event1' ) ); node.dispatchEvent( new Event( 'event2' ) ); sinon.assert.calledOnce( spy1 ); sinon.assert.calledOnce( spy2 ); } ); it( 'should stop listening to everything', function() { var spy1 = bender.sinon.spy(); var spy2 = bender.sinon.spy(); var node1 = getDOMNodeInstance(); var node2 = getDOMNodeInstance(); view.listenTo( node1, 'event1', spy1 ); view.listenTo( node2, 'event2', spy2 ); expect( view ).to.have.property( '_listeningTo' ); node1.dispatchEvent( new Event( 'event1' ) ); node2.dispatchEvent( new Event( 'event2' ) ); view.stopListening(); node1.dispatchEvent( new Event( 'event1' ) ); node2.dispatchEvent( new Event( 'event2' ) ); sinon.assert.calledOnce( spy1 ); sinon.assert.calledOnce( spy2 ); expect( view ).to.not.have.property( '_listeningTo' ); } ); it( 'should not stop other nodes when a non-listened node is provided', function() { var spy = bender.sinon.spy(); var node1 = getDOMNodeInstance(); var node2 = getDOMNodeInstance(); view.listenTo( node1, 'test', spy ); view.stopListening( node2 ); node1.dispatchEvent( new Event( 'test' ) ); sinon.assert.called( spy ); } ); it( 'should pass DOM Event data to the listener', function() { var spy = bender.sinon.spy(); var node = getDOMNodeInstance(); view.listenTo( node, 'click', spy ); var mouseEvent = new MouseEvent( 'click', { screenX: 10, screenY: 20 } ); node.dispatchEvent( mouseEvent ); sinon.assert.calledOnce( spy ); expect( spy.args[ 0 ][ 1 ] ).to.be.equal( mouseEvent ); } ); it( 'should detach native DOM event listener proxy, specific event', function() { var spy1a = bender.sinon.spy(); var spy1b = bender.sinon.spy(); view.listenTo( node, 'test', spy1a ); var proxyEmitter = view._getProxyEmitter( node ); var spy2 = bender.sinon.spy( proxyEmitter, 'fire' ); node.dispatchEvent( new Event( 'test' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy2 ); view.stopListening( node, 'test' ); node.dispatchEvent( new Event( 'test' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy2 ); // Attach same event again. view.listenTo( node, 'test', spy1b ); node.dispatchEvent( new Event( 'test' ) ); expect( proxyEmitter ).to.be.equal( view._getProxyEmitter( node ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledTwice( spy2 ); } ); it( 'should detach native DOM event listener proxy, specific callback', function() { var spy1a = bender.sinon.spy(); var spy1b = bender.sinon.spy(); var spy1c = bender.sinon.spy(); view.listenTo( node, 'test', spy1a ); view.listenTo( node, 'test', spy1b ); var proxyEmitter = view._getProxyEmitter( node ); var spy2 = bender.sinon.spy( proxyEmitter, 'fire' ); node.dispatchEvent( new Event( 'test' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledOnce( spy2 ); view.stopListening( node, 'test', spy1a ); node.dispatchEvent( new Event( 'test' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledTwice( spy1b ); sinon.assert.calledTwice( spy2 ); view.stopListening( node, 'test', spy1b ); node.dispatchEvent( new Event( 'test' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledTwice( spy1b ); sinon.assert.calledTwice( spy2 ); // Attach same event again. view.listenTo( node, 'test', spy1c ); node.dispatchEvent( new Event( 'test' ) ); expect( proxyEmitter ).to.be.equal( view._getProxyEmitter( node ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledTwice( spy1b ); sinon.assert.calledOnce( spy1c ); sinon.assert.calledThrice( spy2 ); } ); it( 'should detach native DOM event listener proxy, specific emitter', function() { var spy1a = bender.sinon.spy(); var spy1b = bender.sinon.spy(); var spy1c = bender.sinon.spy(); var spy1d = bender.sinon.spy(); view.listenTo( node, 'test1', spy1a ); view.listenTo( node, 'test2', spy1b ); var proxyEmitter = view._getProxyEmitter( node ); var spy2 = bender.sinon.spy( proxyEmitter, 'fire' ); node.dispatchEvent( new Event( 'test1' ) ); node.dispatchEvent( new Event( 'test2' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledTwice( spy2 ); view.stopListening( node ); node.dispatchEvent( new Event( 'test1' ) ); node.dispatchEvent( new Event( 'test2' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledTwice( spy2 ); // Attach same event again. view.listenTo( node, 'test1', spy1c ); view.listenTo( node, 'test2', spy1d ); // Old proxy emitter died when stopped listening to the node. var proxyEmitter2 = view._getProxyEmitter( node ); var spy3 = bender.sinon.spy( proxyEmitter2, 'fire' ); node.dispatchEvent( new Event( 'test1' ) ); node.dispatchEvent( new Event( 'test2' ) ); expect( proxyEmitter ).to.not.be.equal( proxyEmitter2 ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledOnce( spy1c ); sinon.assert.calledOnce( spy1d ); sinon.assert.calledTwice( spy2 ); sinon.assert.calledTwice( spy3 ); } ); it( 'should detach native DOM event listener proxy, everything', function() { var spy1a = bender.sinon.spy(); var spy1b = bender.sinon.spy(); var spy1c = bender.sinon.spy(); var spy1d = bender.sinon.spy(); view.listenTo( node, 'test1', spy1a ); view.listenTo( node, 'test2', spy1b ); var proxyEmitter = view._getProxyEmitter( node ); var spy2 = bender.sinon.spy( proxyEmitter, 'fire' ); node.dispatchEvent( new Event( 'test1' ) ); node.dispatchEvent( new Event( 'test2' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledTwice( spy2 ); view.stopListening(); node.dispatchEvent( new Event( 'test1' ) ); node.dispatchEvent( new Event( 'test2' ) ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledTwice( spy2 ); // Attach same event again. view.listenTo( node, 'test1', spy1c ); view.listenTo( node, 'test2', spy1d ); // Old proxy emitter died when stopped listening to the node. var proxyEmitter2 = view._getProxyEmitter( node ); var spy3 = bender.sinon.spy( proxyEmitter2, 'fire' ); node.dispatchEvent( new Event( 'test1' ) ); node.dispatchEvent( new Event( 'test2' ) ); expect( proxyEmitter ).to.not.be.equal( proxyEmitter2 ); sinon.assert.calledOnce( spy1a ); sinon.assert.calledOnce( spy1b ); sinon.assert.calledOnce( spy1c ); sinon.assert.calledOnce( spy1d ); sinon.assert.calledTwice( spy2 ); sinon.assert.calledTwice( spy3 ); } ); } );