text: /**
   * @license Copyright (c) 2003-2021, CKSource - Frederico Knabben. All rights reserved.
   * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
   */
  
  /* globals document, Event */
  
  import ClassicTestEditor from '@ckeditor/ckeditor5-core/tests/_utils/classictesteditor';
  import testUtils from '@ckeditor/ckeditor5-core/tests/_utils/utils';
  import { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';
  import { getData as getModelData, setData } from '@ckeditor/ckeditor5-engine/src/dev-utils/model';
  
  import Undo from '@ckeditor/ckeditor5-undo/src/undo';
  import Batch from '@ckeditor/ckeditor5-engine/src/model/batch';
  import Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph';
  import ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';
  import ContextualBalloon from '@ckeditor/ckeditor5-ui/src/panel/balloon/contextualballoon';
  
  import Table from '../../src/table';
  import TableCellPropertiesEditing from '../../src/tablecellproperties/tablecellpropertiesediting';
  import TableCellPropertiesUI from '../../src/tablecellproperties/tablecellpropertiesui';
  import TableCellPropertiesUIView from '../../src/tablecellproperties/ui/tablecellpropertiesview';
  import { defaultColors } from '../../src/utils/ui/table-properties';
  import { modelTable } from '../_utils/utils';
  
  describe( 'table cell properties', () => {
  	describe( 'TableCellPropertiesUI', () => {
  		let editor, editorElement, contextualBalloon,
  			tableCellPropertiesUI, tableCellPropertiesView, tableCellPropertiesButton,
  			clock;
  
  		testUtils.createSinonSandbox();
  
  		beforeEach( () => {
  			clock = sinon.useFakeTimers();
  			editorElement = document.createElement( 'div' );
  			document.body.appendChild( editorElement );
  
  			return ClassicTestEditor
  				.create( editorElement, {
  					plugins: [ Table, TableCellPropertiesEditing, TableCellPropertiesUI, Paragraph, Undo ],
  					initialData: '<table><tr><td>foo</td></tr></table><p>bar</p>'
  				} )
  				.then( newEditor => {
  					editor = newEditor;
  
  					tableCellPropertiesUI = editor.plugins.get( TableCellPropertiesUI );
  					tableCellPropertiesButton = editor.ui.componentFactory.create( 'tableCellProperties' );
  					contextualBalloon = editor.plugins.get( ContextualBalloon );
  					tableCellPropertiesView = tableCellPropertiesUI.view;
  
  					// There is no point to execute BalloonPanelView attachTo and pin methods so lets override it.
  					testUtils.sinon.stub( contextualBalloon.view, 'attachTo' ).returns( {} );
  					testUtils.sinon.stub( contextualBalloon.view, 'pin' ).returns( {} );
  				} );
  		} );
  
  		afterEach( () => {
  			clock.restore();
  			editorElement.remove();
  
  			return editor.destroy();
  		} );
  
  		it( 'should be named', () => {
  			expect( TableCellPropertiesUI.pluginName ).to.equal( 'TableCellPropertiesUI' );
  		} );
  
  		it( 'should load ContextualBalloon', () => {
  			expect( editor.plugins.get( ContextualBalloon ) ).to.be.instanceOf( ContextualBalloon );
  		} );
  
  		describe( 'constructor()', () => {
  			it( 'should define table.tableCellProperties config', () => {
  				expect( editor.config.get( 'table.tableCellProperties' ) ).to.deep.equal( {
  					borderColors: defaultColors,
  					backgroundColors: defaultColors
  				} );
  			} );
  		} );
  
  		describe( 'init()', () => {
  			it( 'should set a batch', () => {
  				expect( tableCellPropertiesUI._undoStepBatch ).to.be.null;
  			} );
  
  			describe( '#view', () => {
  				it( 'should be created', () => {
  					expect( tableCellPropertiesUI.view ).to.be.instanceOf( TableCellPropertiesUIView );
  				} );
  
  				it( 'should be rendered', () => {
  					expect( tableCellPropertiesUI.view.isRendered ).to.be.true;
  				} );
  
  				it( 'should get the border colors configurations', () => {
  					expect( tableCellPropertiesView.options.borderColors ).to.have.length( 15 );
  				} );
  
  				it( 'should get the background colors configurations', () => {
  					expect( tableCellPropertiesView.options.backgroundColors ).to.have.length( 15 );
  				} );
  			} );
  
  			describe( 'toolbar button', () => {
  				it( 'should be registered', () => {
  					expect( tableCellPropertiesButton ).to.be.instanceOf( ButtonView );
  				} );
  
  				it( 'should have a label', () => {
  					expect( tableCellPropertiesButton.label ).to.equal( 'Cell properties' );
  				} );
  
  				it( 'should have a tooltip', () => {
  					expect( tableCellPropertiesButton.tooltip ).to.be.true;
  				} );
  
  				it( 'should call #_showView upon #execute', () => {
  					const spy = testUtils.sinon.stub( tableCellPropertiesUI, '_showView' ).returns( {} );
  
  					tableCellPropertiesButton.fire( 'execute' );
  					sinon.assert.calledOnce( spy );
  				} );
  
  				it( 'should be disabled if all of the table cell properties commands are disabled', () => {
  					[
  						'tableCellBorderStyle',
  						'tableCellBorderColor',
  						'tableCellBorderWidth',
  						'tableCellWidth',
  						'tableCellHeight',
  						'tableCellPadding',
  						'tableCellBackgroundColor',
  						'tableCellHorizontalAlignment',
  						'tableCellVerticalAlignment'
  					].forEach( command => {
  						editor.commands.get( command ).isEnabled = false;
  					} );
  
  					expect( tableCellPropertiesButton.isEnabled ).to.be.false;
  
  					editor.commands.get( 'tableCellBackgroundColor' ).isEnabled = true;
  
  					expect( tableCellPropertiesButton.isEnabled ).to.be.true;
  				} );
  			} );
  		} );
  
  		describe( 'destroy()', () => {
  			it( 'should destroy the #view', () => {
  				const spy = sinon.spy( tableCellPropertiesView, 'destroy' );
  
  				tableCellPropertiesUI.destroy();
  
  				sinon.assert.calledOnce( spy );
  			} );
  		} );
  
  		describe( 'Properties #view', () => {
  			beforeEach( () => {
  				editor.model.change( writer => {
  					writer.setSelection( editor.model.document.getRoot().getChild( 0 ).getChild( 0 ).getChild( 0 ), 0 );
  				} );
  			} );
  
  			it( 'should hide on #submit', () => {
  				tableCellPropertiesButton.fire( 'execute' );
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  
  				tableCellPropertiesView.fire( 'submit' );
  				expect( contextualBalloon.visibleView ).to.be.null;
  			} );
  
  			describe( '#cancel event', () => {
  				// https://github.com/ckeditor/ckeditor5/issues/6180
  				it( 'should not undo if it there were no changes made to the property fields', () => {
  					const spy = sinon.spy( editor, 'execute' );
  
  					// Show the view. New batch will be created.
  					tableCellPropertiesButton.fire( 'execute' );
  
  					// Cancel the view immediately.
  					tableCellPropertiesView.fire( 'cancel' );
  
  					sinon.assert.notCalled( spy );
  				} );
  
  				it( 'should undo the entire batch of changes if there were some', () => {
  					const spy = sinon.spy( editor, 'execute' );
  
  					// Show the view. New batch will be created.
  					tableCellPropertiesButton.fire( 'execute' );
  
  					// Do the changes like a user.
  					tableCellPropertiesView.borderStyle = 'dotted';
  					tableCellPropertiesView.backgroundColor = 'red';
  
  					expect( getModelData( editor.model ) ).to.equal(
  						'<table>' +
  							'<tableRow>' +
  								'<tableCell backgroundColor="red" borderStyle="dotted">' +
  									'<paragraph>[]foo</paragraph>' +
  								'</tableCell>' +
  							'</tableRow>' +
  						'</table>' +
  						'<paragraph>bar</paragraph>'
  					);
  
  					tableCellPropertiesView.fire( 'cancel' );
  
  					expect( getModelData( editor.model ) ).to.equal(
  						'<table>' +
  							'<tableRow>' +
  								'<tableCell>' +
  									'<paragraph>[]foo</paragraph>' +
  								'</tableCell>' +
  							'</tableRow>' +
  						'</table>' +
  						'<paragraph>bar</paragraph>'
  					);
  
  					sinon.assert.calledWith( spy, 'undo', tableCellPropertiesUI._undoStepBatch );
  				} );
  
  				it( 'should hide the view', () => {
  					tableCellPropertiesButton.fire( 'execute' );
  					expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  
  					tableCellPropertiesView.fire( 'cancel' );
  					expect( contextualBalloon.visibleView ).to.be.null;
  				} );
  			} );
  
  			it( 'should hide on the Esc key press', () => {
  				const keyEvtData = {
  					keyCode: keyCodes.esc,
  					preventDefault: sinon.spy(),
  					stopPropagation: sinon.spy()
  				};
  
  				tableCellPropertiesButton.fire( 'execute' );
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  
  				tableCellPropertiesView.keystrokes.press( keyEvtData );
  				expect( contextualBalloon.visibleView ).to.be.null;
  			} );
  
  			it( 'should hide if the table cell is no longer selected on EditorUI#update', () => {
  				tableCellPropertiesButton.fire( 'execute' );
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  
  				editor.model.change( writer => {
  					// Set selection in the paragraph.
  					writer.setSelection( editor.model.document.getRoot().getChild( 1 ), 0 );
  				} );
  
  				expect( contextualBalloon.visibleView ).to.be.null;
  			} );
  
  			it( 'should reposition if table cell is still selected on on EditorUI#update', () => {
  				tableCellPropertiesButton.fire( 'execute' );
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  
  				editor.model.change( writer => {
  					writer.insertText( 'qux', editor.model.document.selection.getFirstPosition() );
  				} );
  
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  			} );
  
  			it( 'should hide if clicked outside the balloon', () => {
  				tableCellPropertiesButton.fire( 'execute' );
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  
  				document.body.dispatchEvent( new Event( 'mousedown', { bubbles: true } ) );
  
  				expect( contextualBalloon.visibleView ).to.be.null;
  			} );
  
  			describe( 'property changes', () => {
  				beforeEach( () => {
  					tableCellPropertiesUI._undoStepBatch = 'foo';
  				} );
  
  				describe( '#borderStyle', () => {
  					it( 'should affect the editor state', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						tableCellPropertiesView.borderStyle = 'dotted';
  
  						sinon.assert.calledOnce( spy );
  						sinon.assert.calledWithExactly( spy, 'tableCellBorderStyle', { value: 'dotted', batch: 'foo' } );
  					} );
  				} );
  
  				describe( '#borderColor', () => {
  					it( 'should affect the editor state', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						tableCellPropertiesView.borderColor = '#FFAAFF';
  
  						sinon.assert.calledOnce( spy );
  						sinon.assert.calledWithExactly( spy, 'tableCellBorderColor', { value: '#FFAAFF', batch: 'foo' } );
  					} );
  
  					it( 'should display an error message if value is invalid', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						// First, let's pass an invalid value and check what happens.
  						tableCellPropertiesView.borderColor = '42';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.borderColorInput.errorText ).to.match( /^The color is invalid/ );
  						sinon.assert.notCalled( spy );
  
  						// And now let's pass a valid value and check if the error text will be gone.
  						tableCellPropertiesView.borderColor = '#AAA';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.borderColorInput.errorText ).to.be.null;
  						sinon.assert.calledWithExactly( spy, 'tableCellBorderColor', { value: '#AAA', batch: 'foo' } );
  					} );
  				} );
  
  				describe( '#borderWidth', () => {
  					it( 'should affect the editor state', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						tableCellPropertiesView.borderWidth = '12px';
  
  						sinon.assert.calledOnce( spy );
  						sinon.assert.calledWithExactly( spy, 'tableCellBorderWidth', { value: '12px', batch: 'foo' } );
  					} );
  
  					it( 'should display an error message if value is invalid', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						// First, let's pass an invalid value and check what happens.
  						tableCellPropertiesView.borderWidth = 'wrong';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.borderWidthInput.errorText ).to.match( /^The value is invalid/ );
  						sinon.assert.notCalled( spy );
  
  						// And now let's pass a valid value and check if the error text will be gone.
  						tableCellPropertiesView.borderWidth = '3em';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.backgroundInput.errorText ).to.be.null;
  						sinon.assert.calledWithExactly( spy, 'tableCellBorderWidth', { value: '3em', batch: 'foo' } );
  					} );
  				} );
  
  				describe( '#width', () => {
  					it( 'should affect the editor state', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						tableCellPropertiesView.width = '12px';
  
  						sinon.assert.calledOnce( spy );
  						sinon.assert.calledWithExactly( spy, 'tableCellWidth', { value: '12px', batch: 'foo' } );
  					} );
  
  					it( 'should display an error message if value is invalid', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						// First, let's pass an invalid value and check what happens.
  						tableCellPropertiesView.width = 'wrong';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.widthInput.errorText ).to.match( /^The value is invalid/ );
  						sinon.assert.notCalled( spy );
  
  						// And now let's pass a valid value and check if the error text will be gone.
  						tableCellPropertiesView.width = '3em';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.backgroundInput.errorText ).to.be.null;
  						sinon.assert.calledWithExactly( spy, 'tableCellWidth', { value: '3em', batch: 'foo' } );
  					} );
  				} );
  
  				describe( '#height', () => {
  					it( 'should affect the editor state', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						tableCellPropertiesView.height = '12px';
  
  						sinon.assert.calledOnce( spy );
  						sinon.assert.calledWithExactly( spy, 'tableCellHeight', { value: '12px', batch: 'foo' } );
  					} );
  
  					it( 'should display an error message if value is invalid', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						// First, let's pass an invalid value and check what happens.
  						tableCellPropertiesView.height = 'wrong';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.heightInput.errorText ).to.match( /^The value is invalid/ );
  						sinon.assert.notCalled( spy );
  
  						// And now let's pass a valid value and check if the error text will be gone.
  						tableCellPropertiesView.height = '3em';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.backgroundInput.errorText ).to.be.null;
  						sinon.assert.calledWithExactly( spy, 'tableCellHeight', { value: '3em', batch: 'foo' } );
  					} );
  				} );
  
  				describe( '#padding', () => {
  					it( 'should affect the editor state', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						tableCellPropertiesView.padding = '12px';
  
  						sinon.assert.calledOnce( spy );
  						sinon.assert.calledWithExactly( spy, 'tableCellPadding', { value: '12px', batch: 'foo' } );
  					} );
  
  					it( 'should display an error message if value is invalid', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						// First, let's pass an invalid value and check what happens.
  						tableCellPropertiesView.padding = 'wrong';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.paddingInput.errorText ).to.match( /^The value is invalid/ );
  						sinon.assert.notCalled( spy );
  
  						// And now let's pass a valid value and check if the error text will be gone.
  						tableCellPropertiesView.padding = '3em';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.backgroundInput.errorText ).to.be.null;
  						sinon.assert.calledWithExactly( spy, 'tableCellPadding', { value: '3em', batch: 'foo' } );
  					} );
  				} );
  
  				describe( '#backgroundColor', () => {
  					it( 'should affect the editor state', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						tableCellPropertiesView.backgroundColor = '#FFAAFF';
  
  						sinon.assert.calledOnce( spy );
  						sinon.assert.calledWithExactly( spy, 'tableCellBackgroundColor', { value: '#FFAAFF', batch: 'foo' } );
  					} );
  
  					it( 'should display an error message if value is invalid', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						// First, let's pass an invalid value and check what happens.
  						tableCellPropertiesView.backgroundColor = '42';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.backgroundInput.errorText ).to.match( /^The color is invalid/ );
  						sinon.assert.notCalled( spy );
  
  						// And now let's pass a valid value and check if the error text will be gone.
  						tableCellPropertiesView.backgroundColor = '#AAA';
  
  						clock.tick( 500 );
  
  						expect( tableCellPropertiesView.backgroundInput.errorText ).to.be.null;
  						sinon.assert.calledWithExactly( spy, 'tableCellBackgroundColor', { value: '#AAA', batch: 'foo' } );
  					} );
  				} );
  
  				describe( '#horizontalAlignment', () => {
  					it( 'should affect the editor state', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						tableCellPropertiesView.horizontalAlignment = 'right';
  
  						sinon.assert.calledOnce( spy );
  						sinon.assert.calledWithExactly( spy, 'tableCellHorizontalAlignment', { value: 'right', batch: 'foo' } );
  					} );
  				} );
  
  				describe( '#verticalAlignment', () => {
  					it( 'should affect the editor state', () => {
  						const spy = testUtils.sinon.stub( editor, 'execute' );
  
  						tableCellPropertiesView.verticalAlignment = 'right';
  
  						sinon.assert.calledOnce( spy );
  						sinon.assert.calledWithExactly( spy, 'tableCellVerticalAlignment', { value: 'right', batch: 'foo' } );
  					} );
  				} );
  
  				it( 'should not display an error text if user managed to fix the value before the UI timeout', () => {
  					// First, let's pass an invalid value.
  					tableCellPropertiesView.borderColor = '#';
  
  					clock.tick( 100 );
  
  					// Then the user managed to quickly type the correct value.
  					tableCellPropertiesView.borderColor = '#aaa';
  
  					clock.tick( 400 );
  
  					// Because they were quick, they should see no error
  					expect( tableCellPropertiesView.borderColorInput.errorText ).to.be.null;
  				} );
  
  				it( 'should not affect the editor state if internal property has changed', () => {
  					const spy = testUtils.sinon.stub( editor, 'execute' );
  
  					tableCellPropertiesView.set( 'internalProp', 'foo' );
  
  					tableCellPropertiesView.internalProp = 'bar';
  
  					sinon.assert.notCalled( spy );
  				} );
  			} );
  		} );
  
  		describe( 'Showing the #view', () => {
  			beforeEach( () => {
  				editor.model.change( writer => {
  					writer.setSelection( editor.model.document.getRoot().getChild( 0 ).getChild( 0 ).getChild( 0 ), 0 );
  				} );
  			} );
  
  			it( 'should create a new undoable batch for further #view cancel', () => {
  				tableCellPropertiesButton.fire( 'execute' );
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  
  				const firstBatch = tableCellPropertiesUI._undoStepBatch;
  				expect( firstBatch ).to.be.instanceOf( Batch );
  
  				tableCellPropertiesView.fire( 'submit' );
  				expect( contextualBalloon.visibleView ).to.be.null;
  
  				tableCellPropertiesButton.fire( 'execute' );
  
  				const secondBatch = tableCellPropertiesUI._undoStepBatch;
  				expect( secondBatch ).to.be.instanceOf( Batch );
  				expect( firstBatch ).to.not.equal( secondBatch );
  			} );
  
  			it( 'should show the ui for multi-cell selection', () => {
  				setData( editor.model, modelTable( [ [ '01', '02' ] ] ) );
  				editor.model.change( writer => {
  					writer.setSelection( [
  						writer.createRangeOn( editor.model.document.getRoot().getNodeByPath( [ 0, 0, 0 ] ) ),
  						writer.createRangeOn( editor.model.document.getRoot().getNodeByPath( [ 0, 0, 1 ] ) )
  					], 0 );
  				} );
  
  				tableCellPropertiesButton.fire( 'execute' );
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  			} );
  
  			describe( 'initial data', () => {
  				it( 'should be set before adding the form to the the balloon to avoid unnecessary input animations', () => {
  					const balloonAddSpy = testUtils.sinon.spy( editor.plugins.get( ContextualBalloon ), 'add' );
  					const borderStyleChangeSpy = testUtils.sinon.spy();
  
  					tableCellPropertiesView.on( 'change:borderStyle', borderStyleChangeSpy );
  
  					editor.commands.get( 'tableCellBorderStyle' ).value = 'a';
  					tableCellPropertiesButton.fire( 'execute' );
  
  					sinon.assert.calledOnce( borderStyleChangeSpy );
  					sinon.assert.calledOnce( balloonAddSpy );
  					sinon.assert.callOrder( borderStyleChangeSpy, balloonAddSpy );
  				} );
  
  				it( 'should be set from the command values', () => {
  					editor.commands.get( 'tableCellBorderStyle' ).value = 'a';
  					editor.commands.get( 'tableCellBorderColor' ).value = 'b';
  					editor.commands.get( 'tableCellBorderWidth' ).value = 'c';
  					editor.commands.get( 'tableCellWidth' ).value = 'd';
  					editor.commands.get( 'tableCellHeight' ).value = 'e';
  					editor.commands.get( 'tableCellPadding' ).value = 'f';
  					editor.commands.get( 'tableCellBackgroundColor' ).value = 'g';
  					editor.commands.get( 'tableCellHorizontalAlignment' ).value = 'h';
  					editor.commands.get( 'tableCellVerticalAlignment' ).value = 'i';
  
  					tableCellPropertiesButton.fire( 'execute' );
  
  					expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  					expect( tableCellPropertiesView ).to.include( {
  						borderStyle: 'a',
  						borderColor: 'b',
  						borderWidth: 'c',
  						width: 'd',
  						height: 'e',
  						padding: 'f',
  						backgroundColor: 'g',
  						horizontalAlignment: 'h',
  						verticalAlignment: 'i'
  					} );
  				} );
  
  				it( 'should use default values when command has no value', () => {
  					editor.commands.get( 'tableCellBorderStyle' ).value = null;
  					editor.commands.get( 'tableCellBorderColor' ).value = null;
  					editor.commands.get( 'tableCellBorderWidth' ).value = null;
  					editor.commands.get( 'tableCellWidth' ).value = null;
  					editor.commands.get( 'tableCellHeight' ).value = null;
  					editor.commands.get( 'tableCellPadding' ).value = null;
  					editor.commands.get( 'tableCellBackgroundColor' ).value = null;
  					editor.commands.get( 'tableCellHorizontalAlignment' ).value = null;
  					editor.commands.get( 'tableCellVerticalAlignment' ).value = null;
  
  					tableCellPropertiesButton.fire( 'execute' );
  
  					expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  					expect( tableCellPropertiesView ).to.include( {
  						borderStyle: '',
  						borderColor: '',
  						borderWidth: '',
  						width: '',
  						height: '',
  						padding: '',
  						backgroundColor: '',
  						horizontalAlignment: '',
  						verticalAlignment: ''
  					} );
  				} );
  			} );
  
  			it( 'should focus the form view', () => {
  				const spy = testUtils.sinon.spy( tableCellPropertiesView, 'focus' );
  
  				tableCellPropertiesButton.fire( 'execute' );
  
  				sinon.assert.calledOnce( spy );
  			} );
  		} );
  
  		describe( 'Hiding the #view', () => {
  			beforeEach( () => {
  				editor.model.change( writer => {
  					writer.setSelection( editor.model.document.getRoot().getChild( 0 ).getChild( 0 ).getChild( 0 ), 0 );
  				} );
  			} );
  
  			it( 'should stop listening to EditorUI#update', () => {
  				const spy = testUtils.sinon.spy( tableCellPropertiesUI, 'stopListening' );
  
  				tableCellPropertiesButton.fire( 'execute' );
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  
  				tableCellPropertiesView.fire( 'submit' );
  				expect( contextualBalloon.visibleView ).to.be.null;
  
  				sinon.assert.calledOnce( spy );
  				sinon.assert.calledWithExactly( spy, editor.ui, 'update' );
  			} );
  
  			it( 'should focus the editing view so the focus is not lost', () => {
  				const spy = testUtils.sinon.spy( editor.editing.view, 'focus' );
  
  				tableCellPropertiesButton.fire( 'execute' );
  				expect( contextualBalloon.visibleView ).to.equal( tableCellPropertiesView );
  
  				tableCellPropertiesView.fire( 'submit' );
  
  				sinon.assert.calledOnce( spy );
  			} );
  		} );
  	} );
  } );
  