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- /**
- * @license Copyright (c) 2003-2018, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
- /**
- * @module ui/dropdown/utils
- */
- import DropdownPanelView from './dropdownpanelview';
- import DropdownView from './dropdownview';
- import DropdownButtonView from './button/dropdownbuttonview';
- import ToolbarView from '../toolbar/toolbarview';
- import ListView from '../list/listview';
- import ListItemView from '../list/listitemview';
- import clickOutsideHandler from '../bindings/clickoutsidehandler';
- import '../../theme/components/dropdown/toolbardropdown.css';
- import '../../theme/components/dropdown/listdropdown.css';
- /**
- * A helper for creating dropdowns. It creates an instance of a {@link module:ui/dropdown/dropdownview~DropdownView dropdown},
- * with a {@link module:ui/dropdown/button/dropdownbutton~DropdownButton button},
- * {@link module:ui/dropdown/dropdownpanelview~DropdownPanelView panel} and all standard dropdown's behaviors.
- *
- * # Creating dropdowns
- *
- * By default, the default {@link module:ui/dropdown/button/dropdownbuttonview~DropdownButtonView} class is used as
- * definition of the button:
- *
- * const dropdown = createDropdown( model );
- *
- * // Configure dropdown's button properties:
- * dropdown.buttonView.set( {
- * label: 'A dropdown',
- * withText: true
- * } );
- *
- * dropdown.render();
- *
- * // Will render a dropdown labeled "A dropdown" with an empty panel.
- * document.body.appendChild( dropdown.element );
- *
- * You can also provide other button views (they need to implement the
- * {module:ui/dropdown/button/dropdownbutton~DropdownButton} interface). For instance, you can use
- * {@link module:ui/dropdown/button/splitbuttonview~SplitButtonView} to create a dropdown with a split button.
- *
- * const dropdown = createDropdown( model, SplitButtonView );
- *
- * // Configure dropdown's button properties:
- * dropdown.buttonView.set( {
- * label: 'A dropdown',
- * withText: true
- * } );
- *
- * dropdown.buttonView.on( 'execute', () => {
- * // Add the behavior of the "action part" of the split button.
- * // Split button consists of the "action part" and "arrow part".
- * // The arrow opens the dropdown while the action part can have some other behavior.
- * } );
- *
- * dropdown.render();
- *
- * // Will render a dropdown labeled "A dropdown" with an empty panel.
- * document.body.appendChild( dropdown.element );
- *
- * # Adding content to the dropdown's panel
- *
- * The content of the panel can be inserted directly into the `dropdown.panelView.element`:
- *
- * dropdown.panelView.element.textContent = 'Content of the panel';
- *
- * However, most of the time you will want to add there either a {@link module:ui/list/listview~ListView list of options}
- * or a list of buttons (i.e. a {@link module:ui/toolbar/toolbarview~ToolbarView toolbar}).
- * To simplify the task, you can use, respectively, {@link module:ui/dropdown/utils~addListToDropdown} or
- * {@link module:ui/dropdown/utils~addToolbarToDropdown} utils.
- *
- * @param {module:utils/locale~Locale} locale The locale instance.
- * @param {Function} ButtonClass The dropdown button view class. Needs to implement the
- * {@link module:ui/dropdown/button/dropdownbutton~DropdownButton} interface.
- * @returns {module:ui/dropdown/dropdownview~DropdownView} The dropdown view instance.
- */
- export function createDropdown( locale, ButtonClass = DropdownButtonView ) {
- const buttonView = new ButtonClass( locale );
- const panelView = new DropdownPanelView( locale );
- const dropdownView = new DropdownView( locale, buttonView, panelView );
- buttonView.bind( 'isEnabled' ).to( dropdownView );
- if ( buttonView instanceof DropdownButtonView ) {
- buttonView.bind( 'isOn' ).to( dropdownView, 'isOpen' );
- } else {
- buttonView.arrowView.bind( 'isOn' ).to( dropdownView, 'isOpen' );
- }
- addDefaultBehavior( dropdownView );
- return dropdownView;
- }
- /**
- * Adds an instance of {@link module:ui/toolbar/toolbarview~ToolbarView} to a dropdown.
- *
- * const buttons = [];
- *
- * // Either create a new ButtonView instance or create existing.
- * buttons.push( new ButtonView() );
- * buttons.push( editor.ui.componentFactory.get( 'someButton' ) );
- *
- * const dropdown = createDropdown( locale );
- *
- * addToolbarToDropdown( dropdown, buttons );
- *
- * dropdown.toolbarView.isVertical = true;
- *
- * // Will render a vertical button dropdown labeled "A button dropdown"
- * // with a button group in the panel containing two buttons.
- * dropdown.render()
- * document.body.appendChild( dropdown.element );
- *
- * See {@link module:ui/dropdown/utils~createDropdown} and {@link module:ui/toolbar/toolbarview~ToolbarView}.
- *
- * @param {module:ui/dropdown/dropdownview~DropdownView} dropdownView A dropdown instance to which `ToolbarView` will be added.
- * @param {Iterable.<module:ui/button/buttonview~ButtonView>} buttons
- */
- export function addToolbarToDropdown( dropdownView, buttons ) {
- const toolbarView = dropdownView.toolbarView = new ToolbarView();
- dropdownView.extendTemplate( {
- attributes: {
- class: [ 'ck-toolbar-dropdown' ]
- }
- } );
- buttons.map( view => toolbarView.items.add( view ) );
- dropdownView.panelView.children.add( toolbarView );
- toolbarView.items.delegate( 'execute' ).to( dropdownView );
- }
- /**
- * Adds an instance of {@link module:ui/list/listview~ListView} to a dropdown.
- *
- * const items = new Collection();
- *
- * items.add( new Model( { label: 'First item', style: 'color: red' } ) );
- * items.add( new Model( { label: 'Second item', style: 'color: green', class: 'foo' } ) );
- *
- * const dropdown = createDropdown( locale );
- *
- * addListToDropdown( dropdown, items );
- *
- * // Will render a dropdown with a list in the panel containing two items.
- * dropdown.render()
- * document.body.appendChild( dropdown.element );
- *
- * The `items` collection passed to this methods controls the presence and attributes of respective
- * {@link module:ui/list/listitemview~ListItemView list items}.
- *
- *
- * See {@link module:ui/dropdown/utils~createDropdown} and {@link module:list/list~List}.
- *
- * @param {module:ui/dropdown/dropdownview~DropdownView} dropdownView A dropdown instance to which `ListVIew` will be added.
- * @param {module:utils/collection~Collection} items
- * that the inner dropdown {@link module:ui/list/listview~ListView} children are created from.
- *
- * Usually, it is a collection of {@link module:ui/model~Model models}.
- */
- export function addListToDropdown( dropdownView, items ) {
- const locale = dropdownView.locale;
- const listView = dropdownView.listView = new ListView( locale );
- listView.items.bindTo( items ).using( itemModel => {
- const item = new ListItemView( locale );
- // Bind all attributes of the model to the item view.
- item.bind( ...Object.keys( itemModel ) ).to( itemModel );
- return item;
- } );
- dropdownView.panelView.children.add( listView );
- listView.items.delegate( 'execute' ).to( dropdownView );
- }
- // Add a set of default behaviors to dropdown view.
- //
- // @param {module:ui/dropdown/dropdownview~DropdownView} dropdownView
- function addDefaultBehavior( dropdownView ) {
- closeDropdownOnBlur( dropdownView );
- closeDropdownOnExecute( dropdownView );
- focusDropdownContentsOnArrows( dropdownView );
- }
- // Adds a behavior to a dropdownView that closes opened dropdown when user clicks outside the dropdown.
- //
- // @param {module:ui/dropdown/dropdownview~DropdownView} dropdownView
- function closeDropdownOnBlur( dropdownView ) {
- dropdownView.on( 'render', () => {
- clickOutsideHandler( {
- emitter: dropdownView,
- activator: () => dropdownView.isOpen,
- callback: () => {
- dropdownView.isOpen = false;
- },
- contextElements: [ dropdownView.element ]
- } );
- } );
- }
- // Adds a behavior to a dropdownView that closes the dropdown view on "execute" event.
- //
- // @param {module:ui/dropdown/dropdownview~DropdownView} dropdownView
- function closeDropdownOnExecute( dropdownView ) {
- // Close the dropdown when one of the list items has been executed.
- dropdownView.on( 'execute', () => {
- dropdownView.isOpen = false;
- } );
- }
- // Adds a behavior to a dropdownView that focuses the dropdown's panel view contents on keystrokes.
- //
- // @param {module:ui/dropdown/dropdownview~DropdownView} dropdownView
- function focusDropdownContentsOnArrows( dropdownView ) {
- // If the dropdown panel is already open, the arrow down key should focus the first child of the #panelView.
- dropdownView.keystrokes.set( 'arrowdown', ( data, cancel ) => {
- if ( dropdownView.isOpen ) {
- dropdownView.panelView.focus();
- cancel();
- }
- } );
- // If the dropdown panel is already open, the arrow up key should focus the last child of the #panelView.
- dropdownView.keystrokes.set( 'arrowup', ( data, cancel ) => {
- if ( dropdownView.isOpen ) {
- dropdownView.panelView.focusLast();
- cancel();
- }
- } );
- }
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