jab-image-editor/src/js/command/changeTextStyle.js

JAB TOAST UI Component: ImageEditor

/**
 * @author NHN Ent. FE Development Team <dl_javascript@nhn.com>
 * @fileoverview Change text styles
 */
import snippet from 'tui-code-snippet';
import commandFactory from '../factory/command';
import {Promise} from '../util';
import {componentNames, rejectMessages, commandNames} from '../consts';

const {TEXT} = componentNames;

/**
 * Chched data for undo
 * @type {Object}
 */
let chchedUndoDataForSilent = null;

/**
 * Make undoData
 * @param {object} styles - text styles
 * @param {Component} targetObj - text component
 * @returns {object} - undo data
 */
function makeUndoData(styles, targetObj) {
    const undoData = {
        object: targetObj,
        styles: {}
    };
    snippet.forEachOwnProperties(styles, (value, key) => {
        const undoValue = targetObj[key];
        undoData.styles[key] = undoValue;
    });

    return undoData;
}

const command = {
    name: commandNames.CHANGE_TEXT_STYLE,

    /**
     * Change text styles
     * @param {Graphics} graphics - Graphics instance
     * @param {number} id - object id
     * @param {Object} styles - text styles
     *     @param {string} [styles.fill] Color
     *     @param {string} [styles.fontFamily] Font type for text
     *     @param {number} [styles.fontSize] Size
     *     @param {string} [styles.fontStyle] Type of inclination (normal / italic)
     *     @param {string} [styles.fontWeight] Type of thicker or thinner looking (normal / bold)
     *     @param {string} [styles.textAlign] Type of text align (left / center / right)
     *     @param {string} [styles.textDecoration] Type of line (underline / line-through / overline)
     * @param {boolean} isSilent - is silent execution or not
     * @returns {Promise}
     */
    execute(graphics, id, styles, isSilent) {
        const textComp = graphics.getComponent(TEXT);
        const targetObj = graphics.getObject(id);

        if (!targetObj) {
            return Promise.reject(rejectMessages.noObject);
        }
        if (!this.isRedo) {
            const undoData = makeUndoData(styles, targetObj);

            chchedUndoDataForSilent = this.setUndoData(undoData, chchedUndoDataForSilent, isSilent);
        }

        return textComp.setStyle(targetObj, styles);
    },
    /**
     * @param {Graphics} graphics - Graphics instance
     * @returns {Promise}
     */
    undo(graphics) {
        const textComp = graphics.getComponent(TEXT);
        const {object: textObj, styles} = this.undoData;

        return textComp.setStyle(textObj, styles);
    }
};

commandFactory.register(command);

export default command;