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- /**
- * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
- /* global document, HTMLElement */
- /* bender-tags: ui */
- import testUtils from '/tests/core/_utils/utils.js';
- import View from '/ckeditor5/ui/view.js';
- import Template from '/ckeditor5/ui/template.js';
- import Region from '/ckeditor5/ui/region.js';
- import CKEditorError from '/ckeditor5/utils/ckeditorerror.js';
- let TestView, view;
- testUtils.createSinonSandbox();
- describe( 'View', () => {
- describe( 'constructor', () => {
- beforeEach( () => {
- setTestViewClass();
- setTestViewInstance();
- } );
- it( 'defines basic view properties', () => {
- view = new View();
- expect( view.t ).to.be.undefined;
- expect( view.regions.length ).to.equal( 0 );
- } );
- it( 'defines the locale property and the "t" function', () => {
- const locale = { t() {} };
- view = new View( locale );
- expect( view.locale ).to.equal( locale );
- expect( view.t ).to.equal( locale.t );
- } );
- } );
- describe( 'init', () => {
- beforeEach( () => {
- setTestViewClass( {
- tag: 'p',
- children: [
- { tag: 'span' },
- { tag: 'strong' }
- ]
- } );
- } );
- it( 'calls child regions #init', () => {
- setTestViewInstance();
- const region1 = new Region( 'x' );
- const region2 = new Region( 'y' );
- view.register( region1, el => el );
- view.register( region2, el => el );
- const spy1 = testUtils.sinon.spy( region1, 'init' );
- const spy2 = testUtils.sinon.spy( region2, 'init' );
- view.init();
- sinon.assert.calledOnce( spy1 );
- sinon.assert.calledOnce( spy2 );
- } );
- it( 'initializes view regions with string selector', () => {
- setTestViewInstance();
- const region1 = new Region( 'x' );
- const region2 = new Region( 'y' );
- view.register( region1, 'span' );
- view.register( region2, 'strong' );
- view.init();
- expect( region1.element ).to.equal( view.element.firstChild );
- expect( region2.element ).to.equal( view.element.lastChild );
- } );
- it( 'initializes view regions with function selector', () => {
- setTestViewInstance();
- const region1 = new Region( 'x' );
- const region2 = new Region( 'y' );
- view.register( region1, el => el.firstChild );
- view.register( region2, el => el.lastChild );
- view.init();
- expect( region1.element ).to.equal( view.element.firstChild );
- expect( region2.element ).to.equal( view.element.lastChild );
- } );
- it( 'initializes view regions with boolean selector', () => {
- setTestViewInstance();
- const region1 = new Region( 'x' );
- const region2 = new Region( 'y' );
- view.register( region1, true );
- view.register( region2, true );
- view.init();
- expect( region1.element ).to.be.null;
- expect( region2.element ).to.be.null;
- } );
- } );
- describe( 'bind', () => {
- beforeEach( () => {
- setTestViewClass();
- setTestViewInstance();
- } );
- it( 'returns a shorthand for Template binding', () => {
- expect( view.bind.to ).to.be.a( 'function' );
- expect( view.bind.if ).to.be.a( 'function' );
- const binding = view.bind.to( 'a' );
- expect( binding.observable ).to.equal( view.model );
- expect( binding.emitter ).to.equal( view );
- } );
- } );
- describe( 'register', () => {
- beforeEach( () => {
- setTestViewClass();
- setTestViewInstance();
- } );
- it( 'should throw when first argument is neither Region instance nor string', () => {
- expect( () => {
- view.register( new Date() );
- } ).to.throw( CKEditorError, /ui-view-register-wrongtype/ );
- } );
- it( 'should throw when missing the selector argument', () => {
- expect( () => {
- view.register( 'x' );
- } ).to.throw( CKEditorError, /ui-view-register-badselector/ );
- } );
- it( 'should throw when selector argument is of a wrong type', () => {
- expect( () => {
- view.register( 'x', new Date() );
- } ).to.throw( CKEditorError, /ui-view-register-badselector/ );
- expect( () => {
- view.register( 'x', false );
- } ).to.throw( CKEditorError, /ui-view-register-badselector/ );
- } );
- it( 'should throw when overriding an existing region but without override flag set', () => {
- expect( () => {
- view.register( 'x', true );
- view.register( new Region( 'x' ), true );
- } ).to.throw( CKEditorError, /ui-view-register-override/ );
- } );
- it( 'should register a new region with region name as a first argument', () => {
- view.register( 'x', true );
- expect( view.regions.get( 'x' ) ).to.be.an.instanceof( Region );
- } );
- it( 'should register a new region with Region instance as a first argument', () => {
- view.register( new Region( 'y' ), true );
- expect( view.regions.get( 'y' ) ).to.be.an.instanceof( Region );
- } );
- it( 'should override an existing region with override flag', () => {
- view.template = new Template( {
- tag: 'div',
- children: [
- { tag: 'span' }
- ]
- } );
- const region1 = new Region( 'x' );
- const region2 = new Region( 'x' );
- view.register( region1, true );
- view.register( region2, true, true );
- view.register( 'x', 'span', true );
- view.init();
- expect( view.regions.get( 'x' ) ).to.equal( region2 );
- expect( view.regions.get( 'x' ).element ).to.equal( view.element.firstChild );
- } );
- it( 'should not override an existing region with the same region with override flag', () => {
- const region = new Region( 'x' );
- const spy = testUtils.sinon.spy( view.regions, 'remove' );
- view.register( region, true );
- view.register( region, true, true );
- sinon.assert.notCalled( spy );
- } );
- } );
- describe( 'element', () => {
- beforeEach( createViewInstanceWithTemplate );
- it( 'invokes out of #template', () => {
- setTestViewInstance();
- view.model.set( 'a', 1 );
- expect( view.element ).to.be.an.instanceof( HTMLElement );
- expect( view.element.nodeName ).to.equal( 'A' );
- } );
- it( 'can be explicitly declared', () => {
- class CustomView extends View {
- constructor() {
- super();
- this.element = document.createElement( 'span' );
- }
- }
- view = new CustomView();
- expect( view.element ).to.be.an.instanceof( HTMLElement );
- } );
- it( 'is null when there is no template', () => {
- expect( new View().element ).to.be.null;
- } );
- } );
- describe( 'destroy', () => {
- beforeEach( createViewInstanceWithTemplate );
- it( 'should destroy the view', () => {
- view.destroy();
- expect( view.model ).to.be.null;
- expect( view.regions ).to.be.null;
- expect( view.template ).to.be.null;
- expect( view.locale ).to.be.null;
- expect( view.t ).to.be.null;
- } );
- it( 'detaches the element from DOM', () => {
- const elRef = view.element;
- document.createElement( 'div' ).appendChild( view.element );
- view.destroy();
- expect( elRef.parentNode ).to.be.null;
- } );
- it( 'destroys child regions', () => {
- const region = new Region( 'x' );
- const spy = testUtils.sinon.spy( region, 'destroy' );
- const regionsRef = view.regions;
- const regionViewsRef = region.views;
- view.register( region, true );
- view.regions.get( 'x' ).views.add( new View() );
- view.destroy();
- expect( regionsRef.length ).to.equal( 0 );
- expect( regionViewsRef.length ).to.equal( 0 );
- expect( spy.calledOnce ).to.be.true;
- } );
- it( 'destroy a template–less view', () => {
- view = new View();
- expect( () => {
- view.destroy();
- } ).to.not.throw();
- } );
- } );
- } );
- function createViewInstanceWithTemplate() {
- setTestViewClass( { tag: 'a' } );
- setTestViewInstance();
- }
- function setTestViewClass( templateDef, regionsFn ) {
- TestView = class V extends View {
- constructor() {
- super();
- if ( templateDef ) {
- this.template = new Template( templateDef );
- }
- if ( templateDef && regionsFn ) {
- regionsFn.call( this );
- }
- }
- };
- }
- function setTestViewInstance() {
- view = new TestView();
- if ( view.template ) {
- document.body.appendChild( view.element );
- }
- }
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