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- /**
- * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
- */
- /* global document */
- import ViewCollection from '../../src/viewcollection';
- import ListView from '../../src/list/listview';
- import KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';
- import FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';
- import FocusCycler from '../../src/focuscycler';
- import { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';
- import View from '../../src/view';
- describe( 'ListView', () => {
- let view;
- beforeEach( () => {
- view = new ListView();
- view.render();
- } );
- afterEach( () => {
- view.destroy();
- } );
- describe( 'constructor()', () => {
- it( 'creates element from template', () => {
- expect( view.element.classList.contains( 'ck' ) ).to.be.true;
- expect( view.element.classList.contains( 'ck-reset' ) ).to.be.true;
- expect( view.element.classList.contains( 'ck-list' ) ).to.be.true;
- } );
- it( 'creates view#items collection', () => {
- expect( view.items ).to.be.instanceOf( ViewCollection );
- expect( view.template.children ).to.have.length( 1 );
- expect( view.template.children[ 0 ] ).to.equal( view.items );
- } );
- it( 'creates #focusTracker instance', () => {
- expect( view.focusTracker ).to.be.instanceOf( FocusTracker );
- } );
- it( 'creates #keystrokeHandler instance', () => {
- expect( view.keystrokes ).to.be.instanceOf( KeystrokeHandler );
- } );
- it( 'creates #_focusCycler instance', () => {
- expect( view._focusCycler ).to.be.instanceOf( FocusCycler );
- } );
- } );
- describe( 'render()', () => {
- it( 'registers #items in #focusTracker', () => {
- const view = new ListView();
- const spyAdd = sinon.spy( view.focusTracker, 'add' );
- const spyRemove = sinon.spy( view.focusTracker, 'remove' );
- sinon.assert.notCalled( spyAdd );
- view.items.add( focusable() );
- view.items.add( focusable() );
- view.render();
- sinon.assert.calledTwice( spyAdd );
- view.items.remove( 1 );
- sinon.assert.calledOnce( spyRemove );
- view.destroy();
- } );
- it( 'starts listening for #keystrokes coming from #element', () => {
- const view = new ListView();
- const spy = sinon.spy( view.keystrokes, 'listenTo' );
- view.render();
- sinon.assert.calledOnce( spy );
- sinon.assert.calledWithExactly( spy, view.element );
- view.destroy();
- } );
- describe( 'activates keyboard navigation for the list', () => {
- it( 'so "arrowup" focuses previous focusable item', () => {
- const keyEvtData = {
- keyCode: keyCodes.arrowup,
- preventDefault: sinon.spy(),
- stopPropagation: sinon.spy()
- };
- // No children to focus.
- view.keystrokes.press( keyEvtData );
- sinon.assert.calledOnce( keyEvtData.preventDefault );
- sinon.assert.calledOnce( keyEvtData.stopPropagation );
- view.items.add( nonFocusable() );
- view.items.add( nonFocusable() );
- // No focusable children.
- view.keystrokes.press( keyEvtData );
- sinon.assert.calledTwice( keyEvtData.preventDefault );
- sinon.assert.calledTwice( keyEvtData.stopPropagation );
- view.items.add( focusable() );
- view.items.add( nonFocusable() );
- view.items.add( focusable() );
- // Mock the last item is focused.
- view.focusTracker.isFocused = true;
- view.focusTracker.focusedElement = view.items.get( 4 ).element;
- const spy = sinon.spy( view.items.get( 2 ), 'focus' );
- view.keystrokes.press( keyEvtData );
- sinon.assert.calledThrice( keyEvtData.preventDefault );
- sinon.assert.calledThrice( keyEvtData.stopPropagation );
- sinon.assert.calledOnce( spy );
- } );
- it( 'so "arrowdown" focuses next focusable item', () => {
- const keyEvtData = {
- keyCode: keyCodes.arrowdown,
- preventDefault: sinon.spy(),
- stopPropagation: sinon.spy()
- };
- // No children to focus.
- view.keystrokes.press( keyEvtData );
- sinon.assert.calledOnce( keyEvtData.preventDefault );
- sinon.assert.calledOnce( keyEvtData.stopPropagation );
- view.items.add( nonFocusable() );
- view.items.add( nonFocusable() );
- // No focusable children.
- view.keystrokes.press( keyEvtData );
- sinon.assert.calledTwice( keyEvtData.preventDefault );
- sinon.assert.calledTwice( keyEvtData.stopPropagation );
- view.items.add( focusable() );
- view.items.add( nonFocusable() );
- view.items.add( focusable() );
- // Mock the last item is focused.
- view.focusTracker.isFocused = true;
- view.focusTracker.focusedElement = view.items.get( 4 ).element;
- const spy = sinon.spy( view.items.get( 2 ), 'focus' );
- view.keystrokes.press( keyEvtData );
- sinon.assert.calledThrice( keyEvtData.preventDefault );
- sinon.assert.calledThrice( keyEvtData.stopPropagation );
- sinon.assert.calledOnce( spy );
- } );
- } );
- } );
- describe( 'focus()', () => {
- it( 'focuses the first focusable item in DOM', () => {
- // No children to focus.
- view.focus();
- // The second child is focusable.
- view.items.add( nonFocusable() );
- view.items.add( focusable() );
- view.items.add( nonFocusable() );
- const spy = sinon.spy( view.items.get( 1 ), 'focus' );
- view.focus();
- sinon.assert.calledOnce( spy );
- } );
- } );
- describe( 'focusLast()', () => {
- it( 'focuses the last focusable item in DOM', () => {
- // No children to focus.
- view.focusLast();
- // The second child is focusable.
- view.items.add( nonFocusable() );
- view.items.add( focusable() );
- view.items.add( nonFocusable() );
- const spy = sinon.spy( view.items.get( 1 ), 'focus' );
- view.focusLast();
- sinon.assert.calledOnce( spy );
- } );
- } );
- } );
- function focusable() {
- const view = nonFocusable();
- view.focus = () => {};
- return view;
- }
- function nonFocusable() {
- const view = new View();
- view.element = document.createElement( 'li' );
- return view;
- }
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