import { BasicButton } from "./button.basic";
import { shortcut, extend, Controller, Events } from "@/core";

/**
 * 表示一个可以展开的节点, 不仅有选中状态而且有展开状态
 *
 * Created by GUY on 2015/9/9.
 * @class NodeButton
 * @extends BasicButton
 * @abstract
 */
@shortcut()
export class NodeButton extends BasicButton {
    static xtype = "bi.node_button";

    _defaultConfig() {
        const conf = super._defaultConfig(...arguments);

        return extend(conf, {
            _baseCls: `${conf._baseCls || ""} bi-node`,
            open: false,
            once: false,
        });
    }

    _initRef() {
        if (this.isOpened()) {
            this.setOpened(this.isOpened());
        }
        super._initRef(...arguments);
    }

    doClick() {
        super.doClick(...arguments);
        this.setOpened(!this.isOpened());
    }

    isOpened() {
        return !!this.options.open;
    }

    setOpened(b) {
        this.options.open = !!b;
    }

    triggerCollapse() {
        if (this.isOpened()) {
            this.setOpened(false);
            this.fireEvent(Controller.EVENT_CHANGE, Events.COLLAPSE, this.getValue(), this);
        }
    }

    triggerExpand() {
        if (!this.isOpened()) {
            this.setOpened(true);
            this.fireEvent(Controller.EVENT_CHANGE, Events.EXPAND, this.getValue(), this);
        }
    }
}