import { injectable } from 'inversify';
import { PanelLayout, Widget  } from './widget';
import { each } from '@phosphor/algorithm';
import { MessageLoop, Message } from '@phosphor/messaging';
import { StatefulWidget, StatefulWidgetAbstract } from './stateful-widget';

/* eslint-disable @typescript-eslint/no-explicit-any */

@injectable()
export class StatefulLayout extends PanelLayout implements StatefulWidget {
  /**
   * 将父节点的大小透传给自节点
   * @param msg
   */
  protected onResize(msg: Widget.ResizeMessage): void {
    each(this, widget => {
      MessageLoop.postMessage(widget, msg);
    });
  }
  addWidget(widget: StatefulWidgetAbstract): void {
    super.addWidget(widget);
  }
  removeWidget(widget: StatefulWidgetAbstract): void {
    super.removeWidget(widget);
  }
  storeState(): object {
    const state: any = {};
    each(this, (widget: StatefulWidgetAbstract) => {
      state[widget.id] = widget.storeState();
    });
    return state;
  }
  restoreState(oldState: object): void {
    each(this, (widget: StatefulWidgetAbstract) => {
      const data = (oldState as any)[widget.id] as object;
      if (data) {
        widget.restoreState(data);
      }
    });
  }
  onUpdateRequest(msg: Message): void {
    each(this, (widget: StatefulWidgetAbstract) => {
      // 只有状态修改才通知
      if (widget.isStateChanged()) MessageLoop.postMessage(widget, msg);
    });
  }
  resetState(): void {
    each(this, (widget: StatefulWidgetAbstract) => {
      widget.resetState();
    });
  }
}