/
tablepropertiesui.js
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/
tablepropertiesui.js
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/**
* @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.
* For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
*/
/**
* @module table/tableproperties/tablepropertiesui
*/
import Plugin from '@ckeditor/ckeditor5-core/src/plugin';
import ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';
import clickOutsideHandler from '@ckeditor/ckeditor5-ui/src/bindings/clickoutsidehandler';
import ContextualBalloon from '@ckeditor/ckeditor5-ui/src/panel/balloon/contextualballoon';
import TablePropertiesView from './ui/tablepropertiesview';
import tableProperties from './../../theme/icons/table-properties.svg';
import {
colorFieldValidator,
getLocalizedColorErrorText,
getLocalizedLengthErrorText,
lengthFieldValidator,
lineWidthFieldValidator,
defaultColors
} from '../utils/ui/table-properties';
import {
getLocalizedColorOptions,
normalizeColorOptions
} from '@ckeditor/ckeditor5-ui/src/colorgrid/utils';
import { debounce } from 'lodash-es';
import { getTableWidgetAncestor } from '../utils/ui/widget';
import { getBalloonTablePositionData, repositionContextualBalloon } from '../utils/ui/contextualballoon';
const ERROR_TEXT_TIMEOUT = 500;
// Map of view properties and related commands.
const propertyToCommandMap = {
borderStyle: 'tableBorderStyle',
borderColor: 'tableBorderColor',
borderWidth: 'tableBorderWidth',
backgroundColor: 'tableBackgroundColor',
width: 'tableWidth',
height: 'tableHeight',
alignment: 'tableAlignment'
};
/**
* The table properties UI plugin. It introduces the `'tableProperties'` button
* that opens a form allowing to specify visual styling of an entire table.
*
* It uses the
* {@link module:ui/panel/balloon/contextualballoon~ContextualBalloon contextual balloon plugin}.
*
* @extends module:core/plugin~Plugin
*/
export default class TablePropertiesUI extends Plugin {
/**
* @inheritDoc
*/
static get requires() {
return [ ContextualBalloon ];
}
/**
* @inheritDoc
*/
static get pluginName() {
return 'TablePropertiesUI';
}
/**
* @inheritDoc
*/
constructor( editor ) {
super( editor );
editor.config.define( 'table.tableProperties', {
borderColors: defaultColors,
backgroundColors: defaultColors
} );
}
/**
* @inheritDoc
*/
init() {
const editor = this.editor;
const t = editor.t;
/**
* The contextual balloon plugin instance.
*
* @private
* @member {module:ui/panel/balloon/contextualballoon~ContextualBalloon}
*/
this._balloon = editor.plugins.get( ContextualBalloon );
/**
* The properties form view displayed inside the balloon.
*
* @member {module:table/tableproperties/ui/tablepropertiesview~TablePropertiesView}
*/
this.view = this._createPropertiesView();
/**
* The batch used to undo all changes made by the form (which are live, as the user types)
* when "Cancel" was pressed. Each time the view is shown, a new batch is created.
*
* @protected
* @member {module:engine/model/batch~Batch}
*/
this._undoStepBatch = null;
editor.ui.componentFactory.add( 'tableProperties', locale => {
const view = new ButtonView( locale );
view.set( {
label: t( 'Table properties' ),
icon: tableProperties,
tooltip: true
} );
this.listenTo( view, 'execute', () => this._showView() );
const commands = Object.values( propertyToCommandMap )
.map( commandName => editor.commands.get( commandName ) );
view.bind( 'isEnabled' ).toMany( commands, 'isEnabled', ( ...areEnabled ) => (
areEnabled.some( isCommandEnabled => isCommandEnabled )
) );
return view;
} );
}
/**
* @inheritDoc
*/
destroy() {
super.destroy();
// Destroy created UI components as they are not automatically destroyed.
// See https://github.com/ckeditor/ckeditor5/issues/1341.
this.view.destroy();
}
/**
* Creates the {@link module:table/tableproperties/ui/tablepropertiesview~TablePropertiesView} instance.
*
* @private
* @returns {module:table/tableproperties/ui/tablepropertiesview~TablePropertiesView} The table
* properties form view instance.
*/
_createPropertiesView() {
const editor = this.editor;
const viewDocument = editor.editing.view.document;
const config = editor.config.get( 'table.tableProperties' );
const borderColorsConfig = normalizeColorOptions( config.borderColors );
const localizedBorderColors = getLocalizedColorOptions( editor.locale, borderColorsConfig );
const backgroundColorsConfig = normalizeColorOptions( config.backgroundColors );
const localizedBackgroundColors = getLocalizedColorOptions( editor.locale, backgroundColorsConfig );
const view = new TablePropertiesView( editor.locale, {
borderColors: localizedBorderColors,
backgroundColors: localizedBackgroundColors
} );
const t = editor.t;
// Render the view so its #element is available for the clickOutsideHandler.
view.render();
this.listenTo( view, 'submit', () => {
this._hideView();
} );
this.listenTo( view, 'cancel', () => {
// https://github.com/ckeditor/ckeditor5/issues/6180
if ( this._undoStepBatch.operations.length ) {
editor.execute( 'undo', this._undoStepBatch );
}
this._hideView();
} );
// Close the balloon on Esc key press.
view.keystrokes.set( 'Esc', ( data, cancel ) => {
this._hideView();
cancel();
} );
// Reposition the balloon or hide the form if a table is no longer selected.
this.listenTo( editor.ui, 'update', () => {
if ( !getTableWidgetAncestor( viewDocument.selection ) ) {
this._hideView();
} else if ( this._isViewVisible ) {
repositionContextualBalloon( editor, 'table' );
}
} );
// Close on click outside of balloon panel element.
clickOutsideHandler( {
emitter: view,
activator: () => this._isViewInBalloon,
contextElements: [ this._balloon.view.element ],
callback: () => this._hideView()
} );
const colorErrorText = getLocalizedColorErrorText( t );
const lengthErrorText = getLocalizedLengthErrorText( t );
// Create the "UI -> editor data" binding.
// These listeners update the editor data (via table commands) when any observable
// property of the view has changed. They also validate the value and display errors in the UI
// when necessary. This makes the view live, which means the changes are
// visible in the editing as soon as the user types or changes fields' values.
view.on( 'change:borderStyle', this._getPropertyChangeCallback( 'tableBorderStyle' ) );
view.on( 'change:borderColor', this._getValidatedPropertyChangeCallback( {
viewField: view.borderColorInput,
commandName: 'tableBorderColor',
errorText: colorErrorText,
validator: colorFieldValidator
} ) );
view.on( 'change:borderWidth', this._getValidatedPropertyChangeCallback( {
viewField: view.borderWidthInput,
commandName: 'tableBorderWidth',
errorText: lengthErrorText,
validator: lineWidthFieldValidator
} ) );
view.on( 'change:backgroundColor', this._getValidatedPropertyChangeCallback( {
viewField: view.backgroundInput,
commandName: 'tableBackgroundColor',
errorText: colorErrorText,
validator: colorFieldValidator
} ) );
view.on( 'change:width', this._getValidatedPropertyChangeCallback( {
viewField: view.widthInput,
commandName: 'tableWidth',
errorText: lengthErrorText,
validator: lengthFieldValidator
} ) );
view.on( 'change:height', this._getValidatedPropertyChangeCallback( {
viewField: view.heightInput,
commandName: 'tableHeight',
errorText: lengthErrorText,
validator: lengthFieldValidator
} ) );
view.on( 'change:alignment', this._getPropertyChangeCallback( 'tableAlignment' ) );
return view;
}
/**
* In this method the "editor data -> UI" binding is happening.
*
* When executed, this method obtains selected table property values from various table commands
* and passes them to the {@link #view}.
*
* This way, the UI stays up–to–date with the editor data.
*
* @private
*/
_fillViewFormFromCommandValues() {
const commands = this.editor.commands;
Object.entries( propertyToCommandMap )
.map( ( [ property, commandName ] ) => [ property, commands.get( commandName ).value || '' ] )
.forEach( ( [ property, value ] ) => this.view.set( property, value ) );
}
/**
* Shows the {@link #view} in the {@link #_balloon}.
*
* **Note**: Each time a view is shown, the new {@link #_undoStepBatch} is created that contains
* all changes made to the document when the view is visible, allowing a single undo step
* for all of them.
*
* @protected
*/
_showView() {
const editor = this.editor;
this._balloon.add( {
view: this.view,
position: getBalloonTablePositionData( editor )
} );
// Create a new batch. Clicking "Cancel" will undo this batch.
this._undoStepBatch = editor.model.createBatch();
// Update the view with the model values.
this._fillViewFormFromCommandValues();
// Basic a11y.
this.view.focus();
}
/**
* Removes the {@link #view} from the {@link #_balloon}.
*
* @protected
*/
_hideView() {
if ( !this._isViewInBalloon ) {
return;
}
const editor = this.editor;
this.stopListening( editor.ui, 'update' );
// Blur any input element before removing it from DOM to prevent issues in some browsers.
// See https://github.com/ckeditor/ckeditor5/issues/1501.
this.view.saveButtonView.focus();
this._balloon.remove( this.view );
// Make sure the focus is not lost in the process by putting it directly
// into the editing view.
this.editor.editing.view.focus();
}
/**
* Returns `true` when the {@link #view} is the visible in the {@link #_balloon}.
*
* @private
* @type {Boolean}
*/
get _isViewVisible() {
return this._balloon.visibleView === this.view;
}
/**
* Returns `true` when the {@link #view} is in the {@link #_balloon}.
*
* @private
* @type {Boolean}
*/
get _isViewInBalloon() {
return this._balloon.hasView( this.view );
}
/**
* Creates a callback that when executed upon {@link #view view's} property change
* executes a related editor command with the new property value.
*
* @private
* @param {String} commandName
* @returns {Function}
*/
_getPropertyChangeCallback( commandName ) {
return ( evt, propertyName, newValue ) => {
this.editor.execute( commandName, {
value: newValue,
batch: this._undoStepBatch
} );
};
}
/**
* Creates a callback that when executed upon {@link #view view's} property change:
* * executes a related editor command with the new property value if the value is valid,
* * or sets the error text next to the invalid field, if the value did not pass the validation.
*
* @private
* @param {Object} options
* @param {String} options.commandName
* @param {module:ui/view~View} options.viewField
* @param {Function} options.validator
* @param {String} options.errorText
* @returns {Function}
*/
_getValidatedPropertyChangeCallback( { commandName, viewField, validator, errorText } ) {
const setErrorTextDebounced = debounce( () => {
viewField.errorText = errorText;
}, ERROR_TEXT_TIMEOUT );
return ( evt, propertyName, newValue ) => {
setErrorTextDebounced.cancel();
if ( validator( newValue ) ) {
this.editor.execute( commandName, {
value: newValue,
batch: this._undoStepBatch
} );
viewField.errorText = null;
} else {
setErrorTextDebounced();
}
};
}
}