clickobserver.js 1.7 KB

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  1. /**
  2. * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.
  3. * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
  4. */
  5. /* globals console, document */
  6. import View from '../../../src/view/view';
  7. import DomEventObserver from '../../../src/view/observer/domeventobserver';
  8. import createViewRoot from '../_utils/createroot';
  9. const view = new View();
  10. const viewDocument = view.document;
  11. // Disable rendering for this example, because it re-enables all observers each time view is rendered.
  12. view.render = () => {};
  13. class ClickObserver1 extends DomEventObserver {
  14. constructor( view ) {
  15. super( view );
  16. this.id = 1;
  17. this.domEventType = 'click';
  18. }
  19. onDomEvent( domEvt ) {
  20. this.fire( 'click', domEvt, { id: this.id } );
  21. }
  22. }
  23. class ClickObserver2 extends DomEventObserver {
  24. constructor( view ) {
  25. super( view );
  26. this.id = 2;
  27. this.domEventType = 'click';
  28. }
  29. onDomEvent( domEvt ) {
  30. this.fire( 'click', domEvt, { id: this.id } );
  31. }
  32. }
  33. viewDocument.on( 'click', ( evt, evtData ) => console.log( 'click', evtData.id, evtData.domTarget.id ) );
  34. // Random order.
  35. view.addObserver( ClickObserver1 );
  36. createViewRoot( viewDocument, 'div', 'clickerA' );
  37. view.attachDomRoot( document.getElementById( 'clickerA' ), 'clickerA' );
  38. view.addObserver( ClickObserver2 );
  39. createViewRoot( viewDocument, 'div', 'clickerB' );
  40. view.attachDomRoot( document.getElementById( 'clickerB' ), 'clickerB' );
  41. document.getElementById( 'enable1' ).addEventListener( 'click', () => view.getObserver( ClickObserver1 ).enable() );
  42. document.getElementById( 'disable1' ).addEventListener( 'click', () => view.getObserver( ClickObserver1 ).disable() );