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+/**
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+ * @license Copyright (c) 2003-2015, CKSource - Frederico Knabben. All rights reserved.
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+ * For licensing, see LICENSE.md.
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+ */
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+
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+/* bender-tags: treeview */
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+
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+'use strict';
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+
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+import DomEventObserver from '/ckeditor5/core/treeview/observer/domeventobserver.js';
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+import TreeView from '/ckeditor5/core/treeview/treeview.js';
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+
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+class TestObserver extends DomEventObserver {
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+ constructor( id ) {
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+ super();
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+
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+ this.id = id;
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+
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+ this.domEventType = 'click';
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+ }
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+
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+ onDomEvent( domEvt ) {
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+ this.fire( 'click', this.id, domEvt );
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+ }
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+}
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+
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+describe( 'DomEventObserver', () => {
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+ it( 'should add event lister', () => {
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+ const testObserver = new TestObserver( 'foo' );
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+ const domElement = document.createElement( 'p' );
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+ const domEvent = new MouseEvent( 'click' );
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+ const treeView = new TreeView();
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+ const evtSpy = sinon.spy();
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+
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+ treeView.createRoot( domElement, 'root' );
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+ treeView.addObserver( testObserver );
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+ treeView.on( 'click', evtSpy );
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+
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+ domElement.dispatchEvent( domEvent );
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+
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+ expect( evtSpy.calledOnce ).to.be.true;
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+ expect( evtSpy.args[ 0 ][ 1 ] ).to.equal( 'foo' );
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+ expect( evtSpy.args[ 0 ][ 2 ] ).to.equal( domEvent );
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+ } );
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+
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+ it( 'should not fire event if observer is disabled', () => {
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+ const testObserver = new TestObserver( 'foo' );
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+ const domElement = document.createElement( 'p' );
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+ const domEvent = new MouseEvent( 'click' );
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+ const treeView = new TreeView();
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+ const evtSpy = sinon.spy();
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+
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+ treeView.createRoot( domElement, 'root' );
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+ treeView.addObserver( testObserver );
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+ treeView.on( 'click', evtSpy );
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+
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+ testObserver.disable();
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+
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+ domElement.dispatchEvent( domEvent );
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+
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+ expect( evtSpy.called ).to.be.false;
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+ } );
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+
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+ it( 'should be fire event if observer is disabled and re-enabled', () => {
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+ const testObserver = new TestObserver( 'foo' );
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+ const domElement = document.createElement( 'p' );
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+ const domEvent = new MouseEvent( 'click' );
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+ const treeView = new TreeView();
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+ const evtSpy = sinon.spy();
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+
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+ treeView.createRoot( domElement, 'root' );
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+ treeView.addObserver( testObserver );
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+ treeView.on( 'click', evtSpy );
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+
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+ testObserver.disable();
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+
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+ domElement.dispatchEvent( domEvent );
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+
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+ expect( evtSpy.called ).to.be.false;
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+
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+ testObserver.enable();
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+
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+ domElement.dispatchEvent( domEvent );
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+
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+ expect( evtSpy.calledOnce ).to.be.true;
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+ } );
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+
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+ describe( 'fire', () => {
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+ it( 'should do nothing if observer is disabled', () => {
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+ const testObserver = new TestObserver();
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+ const treeView = new TreeView();
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+ const fireSpy = sinon.spy( treeView, 'fire' );
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+
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+ testObserver.init( treeView );
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+
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+ testObserver.disable();
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+
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+ testObserver.fire( 'click' );
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+
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+ expect( fireSpy.called ).to.be.false;
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+
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+ testObserver.enable();
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+
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+ testObserver.fire( 'click' );
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+
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+ expect( fireSpy.calledOnce ).to.be.true;
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+ } );
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+ } );
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+} );
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