text: /**
   * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
   * For licensing, see LICENSE.md.
   */
  
  /* global Event, document */
  
  import ClassicTestEditor from '@ckeditor/ckeditor5-core/tests/_utils/classictesteditor';
  import Image from '../src/image';
  import ImageTextAlternative from '../src/imagetextalternative';
  import ImageTextAlternativeEngine from '../src/imagetextalternative/imagetextalternativeengine';
  import ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';
  import View from '@ckeditor/ckeditor5-ui/src/view';
  import global from '@ckeditor/ckeditor5-utils/src/dom/global';
  import { setData } from '@ckeditor/ckeditor5-engine/src/dev-utils/model';
  import { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';
  
  describe( 'ImageTextAlternative', () => {
  	let editor, editingView, doc, plugin, command, form, balloon, editorElement, button;
  
  	beforeEach( () => {
  		editorElement = global.document.createElement( 'div' );
  		global.document.body.appendChild( editorElement );
  
  		return ClassicTestEditor
  			.create( editorElement, {
  				plugins: [ ImageTextAlternative, Image ]
  			} )
  			.then( newEditor => {
  				editor = newEditor;
  				editingView = editor.editing.view;
  				doc = editor.document;
  				newEditor.editing.view.attachDomRoot( editorElement );
  				plugin = editor.plugins.get( ImageTextAlternative );
  				command = editor.commands.get( 'imageTextAlternative' );
  				form = plugin._form;
  				balloon = editor.plugins.get( 'ContextualBalloon' );
  				button = editor.ui.componentFactory.create( 'imageTextAlternative' );
  			} );
  	} );
  
  	afterEach( () => {
  		editorElement.remove();
  
  		return editor.destroy();
  	} );
  
  	it( 'should be loaded', () => {
  		expect( plugin ).to.be.instanceOf( ImageTextAlternative );
  	} );
  
  	it( 'should load ImageTextAlternativeEngine plugin', () => {
  		expect( editor.plugins.get( ImageTextAlternativeEngine ) ).to.be.instanceOf( ImageTextAlternativeEngine );
  	} );
  
  	describe( 'toolbar button', () => {
  		it( 'should be registered in component factory', () => {
  			expect( button ).to.be.instanceOf( ButtonView );
  		} );
  
  		it( 'should have isEnabled property bind to command\'s isEnabled property', () => {
  			command.isEnabled = true;
  			expect( button.isEnabled ).to.be.true;
  
  			command.isEnabled = false;
  			expect( button.isEnabled ).to.be.false;
  		} );
  
  		it( 'should show balloon panel on execute', () => {
  			expect( balloon.visibleView ).to.be.null;
  
  			setData( doc, '[<image src="" alt="foo bar"></image>]' );
  
  			button.fire( 'execute' );
  			expect( balloon.visibleView ).to.equal( form );
  
  			// Make sure successive execute does not throw, e.g. attempting
  			// to display the form twice.
  			button.fire( 'execute' );
  			expect( balloon.visibleView ).to.equal( form );
  		} );
  
  		it( 'should set alt attribute value to textarea and select it', () => {
  			const spy = sinon.spy( form.labeledInput, 'select' );
  
  			setData( doc, '[<image src="" alt="foo bar"></image>]' );
  
  			button.fire( 'execute' );
  			sinon.assert.calledOnce( spy );
  			expect( form.labeledInput.value ).equals( 'foo bar' );
  		} );
  
  		it( 'should set empty text to textarea and select it when there is no alt attribute', () => {
  			const spy = sinon.spy( form.labeledInput, 'select' );
  
  			setData( doc, '[<image src=""></image>]' );
  
  			button.fire( 'execute' );
  			sinon.assert.calledOnce( spy );
  			expect( form.labeledInput.value ).equals( '' );
  		} );
  	} );
  
  	describe( 'balloon panel form', () => {
  		// https://github.com/ckeditor/ckeditor5-image/issues/114
  		it( 'should make sure the input always stays in sync with the value of the command', () => {
  			const button = editor.ui.componentFactory.create( 'imageTextAlternative' );
  
  			// Mock the value of the input after some past editing.
  			form.labeledInput.value = 'foo';
  
  			// Mock the user using the form, changing the value but clicking "Cancel".
  			// so the command's value is not updated.
  			form.labeledInput.inputView.element.value = 'This value was canceled.';
  
  			// Mock the user editing the same image once again.
  			setData( doc, '[<image src="" alt="foo"></image>]' );
  
  			button.fire( 'execute' );
  			expect( form.labeledInput.inputView.element.value ).to.equal( 'foo' );
  		} );
  
  		it( 'should execute command on submit', () => {
  			const spy = sinon.spy( editor, 'execute' );
  			form.fire( 'submit' );
  
  			sinon.assert.calledOnce( spy );
  			sinon.assert.calledWithExactly( spy, 'imageTextAlternative', {
  				newValue: form.labeledInput.inputView.element.value
  			} );
  		} );
  
  		it( 'should hide the panel on cancel and focus the editing view', () => {
  			const spy = sinon.spy( editor.editing.view, 'focus' );
  
  			setData( doc, '[<image src="" alt="foo bar"></image>]' );
  
  			editor.ui.componentFactory.create( 'imageTextAlternative' ).fire( 'execute' );
  			expect( balloon.visibleView ).to.equal( form );
  
  			form.fire( 'cancel' );
  			expect( balloon.visibleView ).to.be.null;
  			sinon.assert.calledOnce( spy );
  		} );
  
  		it( 'should not engage when the form is in the balloon yet invisible', () => {
  			setData( doc, '[<image src=""></image>]' );
  			button.fire( 'execute' );
  			expect( balloon.visibleView ).to.equal( form );
  
  			const lastView = new View();
  			lastView.element = document.createElement( 'div' );
  
  			balloon.add( { view: lastView } );
  			expect( balloon.visibleView ).to.equal( lastView );
  
  			button.fire( 'execute' );
  			expect( balloon.visibleView ).to.equal( lastView );
  		} );
  
  		describe( 'integration with the editor selection (#render event)', () => {
  			it( 'should re-position the form', () => {
  				setData( doc, '[<image src=""></image>]' );
  				button.fire( 'execute' );
  
  				const spy = sinon.spy( balloon, 'updatePosition' );
  
  				editingView.fire( 'render' );
  				sinon.assert.calledOnce( spy );
  			} );
  		} );
  
  		describe( 'integration with the editor focus', () => {
  			it( 'should hide the toolbar when the editor loses focus and the image is selected', () => {
  				editor.ui.focusTracker.isFocused = true;
  
  				setData( doc, '[<image src=""></image>]' );
  				button.fire( 'execute' );
  
  				const spy = sinon.spy( balloon, 'remove' );
  
  				editor.ui.focusTracker.isFocused = false;
  				sinon.assert.calledWithExactly( spy, form );
  			} );
  		} );
  
  		describe( 'close listeners', () => {
  			describe( 'keyboard', () => {
  				it( 'should close upon Esc key press and focus the editing view', () => {
  					const hideSpy = sinon.spy( plugin, '_hideForm' );
  					const focusSpy = sinon.spy( editor.editing.view, 'focus' );
  
  					setData( doc, '[<image src=""></image>]' );
  					button.fire( 'execute' );
  
  					const keyEvtData = {
  						keyCode: keyCodes.esc,
  						preventDefault: sinon.spy(),
  						stopPropagation: sinon.spy()
  					};
  
  					form.keystrokes.press( keyEvtData );
  					sinon.assert.calledOnce( hideSpy );
  					sinon.assert.calledOnce( keyEvtData.preventDefault );
  					sinon.assert.calledOnce( focusSpy );
  				} );
  			} );
  
  			describe( 'mouse', () => {
  				it( 'should close and not focus editable on click outside the panel', () => {
  					const hideSpy = sinon.spy( plugin, '_hideForm' );
  					const focusSpy = sinon.spy( editor.editing.view, 'focus' );
  
  					setData( doc, '[<image src=""></image>]' );
  					button.fire( 'execute' );
  
  					global.document.body.dispatchEvent( new Event( 'mousedown', { bubbles: true } ) );
  					sinon.assert.called( hideSpy );
  					sinon.assert.notCalled( focusSpy );
  				} );
  
  				it( 'should not close on click inside the panel', () => {
  					const spy = sinon.spy( plugin, '_hideForm' );
  
  					setData( doc, '[<image src=""></image>]' );
  					button.fire( 'execute' );
  
  					form.element.dispatchEvent( new Event( 'mousedown', { bubbles: true } ) );
  					sinon.assert.notCalled( spy );
  				} );
  			} );
  		} );
  	} );
  } );
  