bootstrap-ui-inner.js 11 KB

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  1. /**
  2. * @license Copyright (c) 2003-2018, CKSource - Frederico Knabben. All rights reserved.
  3. * For licensing, see LICENSE.md.
  4. */
  5. /* globals $, window, console:false */
  6. // Basic classes to create an editor.
  7. import Editor from '@ckeditor/ckeditor5-core/src/editor/editor';
  8. import EditorUI from '@ckeditor/ckeditor5-core/src/editor/editorui';
  9. import EditorUIView from '@ckeditor/ckeditor5-ui/src/editorui/editoruiview';
  10. import InlineEditableUIView from '@ckeditor/ckeditor5-ui/src/editableui/inline/inlineeditableuiview';
  11. import HtmlDataProcessor from '@ckeditor/ckeditor5-engine/src/dataprocessor/htmldataprocessor';
  12. import ElementReplacer from '@ckeditor/ckeditor5-utils/src/elementreplacer';
  13. // Interfaces to extend basic Editor API.
  14. import DataApiMixin from '@ckeditor/ckeditor5-core/src/editor/utils/dataapimixin';
  15. import ElementApiMixin from '@ckeditor/ckeditor5-core/src/editor/utils/elementapimixin';
  16. // Helper function for adding interfaces to the Editor class.
  17. import mix from '@ckeditor/ckeditor5-utils/src/mix';
  18. // Helper function that gets data from HTML element that the Editor is attached to.
  19. import getDataFromElement from '@ckeditor/ckeditor5-utils/src/dom/getdatafromelement';
  20. // Helper function that binds editor with HTMLForm element.
  21. import attachToForm from '@ckeditor/ckeditor5-core/src/editor/utils/attachtoform';
  22. // Basic features that every editor should enable.
  23. import Clipboard from '@ckeditor/ckeditor5-clipboard/src/clipboard';
  24. import Enter from '@ckeditor/ckeditor5-enter/src/enter';
  25. import Typing from '@ckeditor/ckeditor5-typing/src/typing';
  26. import Paragraph from '@ckeditor/ckeditor5-paragraph/src/paragraph';
  27. import UndoEditing from '@ckeditor/ckeditor5-undo/src/undoediting';
  28. // Basic features to associated with the edited content.
  29. import BoldEditing from '@ckeditor/ckeditor5-basic-styles/src/bold/boldediting';
  30. import ItalicEditing from '@ckeditor/ckeditor5-basic-styles/src/italic/italicediting';
  31. import UnderlineEditing from '@ckeditor/ckeditor5-basic-styles/src/underline/underlineediting';
  32. import HeadingEditing from '@ckeditor/ckeditor5-heading/src/headingediting';
  33. // The easy image integration.
  34. import EasyImage from '@ckeditor/ckeditor5-easy-image/src/easyimage';
  35. import { CS_CONFIG } from '@ckeditor/ckeditor5-cloud-services/tests/_utils/cloud-services-config';
  36. // Extending the Editor class, which brings base editor API.
  37. export default class BootstrapEditor extends Editor {
  38. constructor( element, config ) {
  39. super( config );
  40. // Remember the element the editor is created with.
  41. this.sourceElement = element;
  42. // Use the HTML data processor in this editor.
  43. this.data.processor = new HtmlDataProcessor();
  44. // Create the ("main") root element of the model tree.
  45. this.model.document.createRoot();
  46. // The UI layer of the editor.
  47. this.ui = new BootstrapEditorUI( this );
  48. // When editor#element is a textarea inside a form element
  49. // then content of this textarea will be updated on form submit.
  50. attachToForm( this );
  51. }
  52. destroy() {
  53. // When destroyed, editor sets the output of editor#getData() into editor#element...
  54. this.updateSourceElement();
  55. // ...and destroys the UI.
  56. this.ui.destroy();
  57. return super.destroy();
  58. }
  59. static create( element, config ) {
  60. return new Promise( resolve => {
  61. const editor = new this( element, config );
  62. resolve(
  63. editor.initPlugins()
  64. // Initialize the UI first. See the BootstrapEditorUI class to learn more.
  65. .then( () => editor.ui.init( element ) )
  66. // Bind the editor editing layer to the editable in DOM.
  67. .then( () => editor.editing.view.attachDomRoot( editor.ui.getEditableElement() ) )
  68. // Fill the editable with the initial data.
  69. .then( () => editor.data.init( getDataFromElement( element ) ) )
  70. // Fire the events that announce that the editor is complete and ready to use.
  71. .then( () => {
  72. editor.fire( 'dataReady' );
  73. editor.fire( 'ready' );
  74. } )
  75. .then( () => editor )
  76. );
  77. } );
  78. }
  79. }
  80. // Mixing interfaces, which extends basic editor API.
  81. mix( BootstrapEditor, DataApiMixin );
  82. mix( BootstrapEditor, ElementApiMixin );
  83. // The class organizing the UI of the editor, binding it with existing Bootstrap elements in DOM.
  84. class BootstrapEditorUI extends EditorUI {
  85. constructor( editor ) {
  86. super( editor );
  87. // A helper to easily replace the editor#element with editor.editable#element.
  88. this._elementReplacer = new ElementReplacer();
  89. // The global UI view of the editor. It aggregates various Bootstrap DOM elements.
  90. const view = this._view = new EditorUIView( editor.locale );
  91. // This is the main editor element in the DOM.
  92. view.element = $( '.ck-editor' );
  93. // This is the editable view in the DOM. It will replace the data container in the DOM.
  94. view.editable = new InlineEditableUIView( editor.locale );
  95. // References to the dropdown elements for further usage. See #_setupBootstrapHeadingDropdown.
  96. view.dropdownMenu = view.element.find( '.dropdown-menu' );
  97. view.dropdownToggle = view.element.find( '.dropdown-toggle' );
  98. // References to the toolbar buttons for further usage. See #_setupBootstrapToolbarButtons.
  99. view.toolbarButtons = {};
  100. [ 'bold', 'italic', 'underline', 'undo', 'redo' ].forEach( name => {
  101. // Retrieve the jQuery object corresponding with the button in the DOM.
  102. view.toolbarButtons[ name ] = view.element.find( `#${ name }` );
  103. } );
  104. }
  105. get view() {
  106. return this._view;
  107. }
  108. init( replacementElement ) {
  109. const editor = this.editor;
  110. const view = this.view;
  111. // Render the editable component in the DOM first.
  112. view.editable.render();
  113. // Create an editing root in the editing layer. It will correspond with the
  114. // document root created in the constructor().
  115. const editingRoot = editor.editing.view.document.getRoot();
  116. // Bind the basic attributes of the editable in the DOM with the editing layer.
  117. view.editable.bind( 'isReadOnly' ).to( editingRoot );
  118. view.editable.bind( 'isFocused' ).to( editor.editing.view.document );
  119. view.editable.name = editingRoot.rootName;
  120. // Register editable element so it is available via getEditableElement() method.
  121. this._editableElements.set( view.editable.name, view.editable.element );
  122. // Setup the existing, external Bootstrap UI so it works with the rest of the editor.
  123. this._setupBootstrapToolbarButtons();
  124. this._setupBootstrapHeadingDropdown();
  125. // Replace the editor#element with editor.editable#element.
  126. this._elementReplacer.replace( replacementElement, view.editable.element );
  127. // Tell the world that the UI of the editor is ready to use.
  128. this.fire( 'ready' );
  129. }
  130. destroy() {
  131. // Restore the original editor#element.
  132. this._elementReplacer.restore();
  133. // Destroy the view.
  134. this._view.editable.destroy();
  135. this._view.destroy();
  136. super.destroy();
  137. }
  138. // This method activates Bold, Italic, Underline, Undo and Redo buttons in the toolbar.
  139. _setupBootstrapToolbarButtons() {
  140. const editor = this.editor;
  141. for ( const name in this.view.toolbarButtons ) {
  142. // Retrieve the editor command corresponding with the id of the button in DOM.
  143. const command = editor.commands.get( name );
  144. const button = this.view.toolbarButtons[ name ];
  145. // Clicking on the buttons should execute the editor command...
  146. button.click( () => editor.execute( name ) );
  147. // ...but it should not steal the focus so the editing is uninterrupted.
  148. button.mousedown( evt => evt.preventDefault() );
  149. const onValueChange = () => {
  150. button.toggleClass( 'active', command.value );
  151. };
  152. const onIsEnabledChange = () => {
  153. button.attr( 'disabled', () => !command.isEnabled );
  154. };
  155. // Commands can become disabled, e.g. when the editor is read-only.
  156. // Make sure the buttons reflect this state change.
  157. command.on( 'change:isEnabled', onIsEnabledChange );
  158. onIsEnabledChange();
  159. // Bold, Italic and Underline commands have a value that changes
  160. // when the selection starts in an element the command creates.
  161. // The button should indicate that e.g. editing text which is already bold.
  162. if ( !new Set( [ 'undo', 'redo' ] ).has( name ) ) {
  163. command.on( 'change:value', onValueChange );
  164. onValueChange();
  165. }
  166. }
  167. }
  168. // This method activates the headings dropdown in the toolbar.
  169. _setupBootstrapHeadingDropdown() {
  170. const editor = this.editor;
  171. const dropdownMenu = this.view.dropdownMenu;
  172. const dropdownToggle = this.view.dropdownToggle;
  173. // Retrieve the editor commands for heading and paragraph.
  174. const headingCommand = editor.commands.get( 'heading' );
  175. const paragraphCommand = editor.commands.get( 'paragraph' );
  176. // Create a dropdown menu entry for each heading configuration option.
  177. editor.config.get( 'heading.options' ).map( option => {
  178. // Check is options is paragraph or heading as their commands slightly differ.
  179. const isParagraph = option.model === 'paragraph';
  180. // Create the menu item DOM element.
  181. const menuItem = $(
  182. `<a href="#" class="dropdown-item heading-item_${ option.model }">` +
  183. `${ option.title }` +
  184. '</a>'
  185. );
  186. // Upon click, the dropdown menu item should execute the command and focus
  187. // the editing view to keep the editing process uninterrupted.
  188. menuItem.click( () => {
  189. const commandName = isParagraph ? 'paragraph' : 'heading';
  190. const commandValue = isParagraph ? undefined : { value: option.model };
  191. editor.execute( commandName, commandValue );
  192. editor.editing.view.focus();
  193. } );
  194. dropdownMenu.append( menuItem );
  195. const command = isParagraph ? paragraphCommand : headingCommand;
  196. // Make sure the dropdown and its items reflect the state of the
  197. // currently active command.
  198. const onValueChange = isParagraph ? onValueChangeParagraph : onValueChangeHeading;
  199. command.on( 'change:value', onValueChange );
  200. onValueChange();
  201. // Heading commands can become disabled, e.g. when the editor is read-only.
  202. // Make sure the UI reflects this state change.
  203. command.on( 'change:isEnabled', onIsEnabledChange );
  204. onIsEnabledChange();
  205. function onValueChangeHeading() {
  206. const isActive = !isParagraph && command.value === option.model;
  207. if ( isActive ) {
  208. dropdownToggle.children( ':first' ).text( option.title );
  209. }
  210. menuItem.toggleClass( 'active', isActive );
  211. }
  212. function onValueChangeParagraph() {
  213. if ( command.value ) {
  214. dropdownToggle.children( ':first' ).text( option.title );
  215. }
  216. menuItem.toggleClass( 'active', command.value );
  217. }
  218. function onIsEnabledChange() {
  219. dropdownToggle.attr( 'disabled', () => !command.isEnabled );
  220. }
  221. } );
  222. }
  223. }
  224. // Finally, create the BootstrapEditor instance with a selected set of features.
  225. BootstrapEditor
  226. .create( $( '#editor' ).get( 0 ), {
  227. plugins: [
  228. Clipboard, Enter, Typing, Paragraph, EasyImage,
  229. BoldEditing, ItalicEditing, UnderlineEditing, HeadingEditing, UndoEditing
  230. ],
  231. cloudServices: CS_CONFIG
  232. } )
  233. .then( editor => {
  234. window.editor = editor;
  235. $( '#toggle-readonly' ).on( 'click', () => {
  236. editor.isReadOnly = !editor.isReadOnly;
  237. } );
  238. } )
  239. .catch( err => {
  240. console.error( err.stack );
  241. } );