ckeditor5-image-upload-base64
Version:
The development environment of CKEditor 5 – the best browser-based rich text editor.
72 lines (62 loc) • 1.89 kB
JavaScript
/**
* @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 engine/view/styles/background
*/
import { getShorthandValues, isAttachment, isColor, isPosition, isRepeat, isURL } from './utils';
/**
* Adds a background CSS styles processing rules.
*
* editor.data.addStyleProcessorRules( addBackgroundRules );
*
* The normalized value is stored as:
*
* const styles = {
* background: {
* color,
* repeat,
* position,
* attachment,
* image
* }
* };
*
* **Note**: Currently only `'background-color'` longhand value is parsed besides `'background'` shorthand. The reducer also supports only
* `'background-color'` value.
*
* @param {module:engine/view/stylesmap~StylesProcessor} stylesProcessor
*/
export function addBackgroundRules( stylesProcessor ) {
stylesProcessor.setNormalizer( 'background', normalizeBackground );
stylesProcessor.setNormalizer( 'background-color', value => ( { path: 'background.color', value } ) );
stylesProcessor.setReducer( 'background', value => {
const ret = [];
ret.push( [ 'background-color', value.color ] );
return ret;
} );
}
function normalizeBackground( value ) {
const background = {};
const parts = getShorthandValues( value );
for ( const part of parts ) {
if ( isRepeat( part ) ) {
background.repeat = background.repeat || [];
background.repeat.push( part );
} else if ( isPosition( part ) ) {
background.position = background.position || [];
background.position.push( part );
} else if ( isAttachment( part ) ) {
background.attachment = part;
} else if ( isColor( part ) ) {
background.color = part;
} else if ( isURL( part ) ) {
background.image = part;
}
}
return {
path: 'background',
value: background
};
}