vditor/src/ts/toolbar/Outdent.ts

♏ 易于使用的 Markdown 编辑器，为适配不同的应用场景而生

import {Constants} from "../constants";
import {getEventName} from "../util/compatibility";
import { listOutdent} from "../util/fixBrowserBehavior";
import {hasClosestByMatchTag} from "../util/hasClosest";
import {getEditorRange} from "../util/selection";
import {MenuItem} from "./MenuItem";

export class Outdent extends MenuItem {
    constructor(vditor: IVditor, menuItem: IMenuItem) {
        super(vditor, menuItem);
        this.element.children[0].addEventListener(getEventName(), (event) => {
            event.preventDefault();
            if (this.element.firstElementChild.classList.contains(Constants.CLASS_MENU_DISABLED) ||
                vditor.currentMode === "sv") {
                return;
            }
            const range = getEditorRange(vditor);
            const liElement = hasClosestByMatchTag(range.startContainer, "LI");
            if (liElement) {
                listOutdent(vditor, liElement, range, liElement.parentElement);
            }
        });
    }
}