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imageresizeediting.js
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imageresizeediting.js
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/**
* @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
* For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
*/
/**
* @module image/imageresize/imageresizeediting
*/
import Plugin from '@ckeditor/ckeditor5-core/src/plugin';
import WidgetResize from '@ckeditor/ckeditor5-widget/src/widgetresize';
import ImageResizeCommand from './imageresizecommand';
/**
* The image resize feature.
*
* It adds a possibility to resize each image using handles or manually by
* {@link module:image/imageresize/imageresizeui~ImageResizeUI} buttons.
*
* @extends module:core/plugin~Plugin
*/
export default class ImageResizeEditing extends Plugin {
/**
* @inheritDoc
*/
static get requires() {
return [ WidgetResize ];
}
/**
* @inheritDoc
*/
static get pluginName() {
return 'ImageResizeEditing';
}
/**
* @inheritDoc
*/
init() {
const editor = this.editor;
const command = new ImageResizeCommand( editor );
this._registerSchema();
this._registerConverters();
editor.commands.add( 'imageResize', command );
editor.editing.downcastDispatcher.on( 'insert:image', ( evt, data, conversionApi ) => {
const widget = conversionApi.mapper.toViewElement( data.item );
const resizer = editor.plugins
.get( WidgetResize )
.attachTo( {
unit: editor.config.get( 'image.resizeUnit' ) || '%',
modelElement: data.item,
viewElement: widget,
editor,
getHandleHost( domWidgetElement ) {
return domWidgetElement.querySelector( 'img' );
},
getResizeHost( domWidgetElement ) {
return domWidgetElement;
},
// TODO consider other positions.
isCentered() {
const imageStyle = data.item.getAttribute( 'imageStyle' );
return !imageStyle || imageStyle == 'full' || imageStyle == 'alignCenter';
},
onCommit( newValue ) {
editor.execute( 'imageResize', { width: newValue } );
}
} );
resizer.on( 'updateSize', () => {
if ( !widget.hasClass( 'image_resized' ) ) {
editor.editing.view.change( writer => {
writer.addClass( 'image_resized', widget );
} );
}
} );
resizer.bind( 'isEnabled' ).to( command );
}, { priority: 'low' } );
}
/**
* @private
*/
_registerSchema() {
this.editor.model.schema.extend( 'image', {
allowAttributes: 'width'
} );
}
/**
* Registers image resize converters.
*
* @private
*/
_registerConverters() {
const editor = this.editor;
// Dedicated converter to propagate image's attribute to the img tag.
editor.conversion.for( 'downcast' ).add( dispatcher =>
dispatcher.on( 'attribute:width:image', ( evt, data, conversionApi ) => {
if ( !conversionApi.consumable.consume( data.item, evt.name ) ) {
return;
}
const viewWriter = conversionApi.writer;
const figure = conversionApi.mapper.toViewElement( data.item );
if ( data.attributeNewValue !== null ) {
viewWriter.setStyle( 'width', data.attributeNewValue, figure );
viewWriter.addClass( 'image_resized', figure );
} else {
viewWriter.removeStyle( 'width', figure );
viewWriter.removeClass( 'image_resized', figure );
}
} )
);
editor.conversion.for( 'upcast' )
.attributeToAttribute( {
view: {
name: 'figure',
styles: {
width: /.+/
}
},
model: {
key: 'width',
value: viewElement => viewElement.getStyle( 'width' )
}
} );
}
}