Class TipHandler

packages/editor-core/src/widgets/tip/tip-handler.ts:8–87

}

class TipHandler {
  tip: TipOptions | null = null;

  private showDelay: number | null = null;

  private hideDelay: number | null = null;

  private emitter: IEventBus = createModuleEventBus('TipHandler');

  setTarget(target: HTMLElement) {
    const tip = findTip(target);
    if (tip) {
      if (this.tip) {
        // the some target should return
        if ((this.tip as any).target === (tip as any).target) {
          this.tip = tip;
          return;
        }
        // not show already, reset show delay
        if (this.showDelay) {
          clearTimeout(this.showDelay);
          this.showDelay = null;
          this.tip = null;
        } else {
          if (this.hideDelay) {
            clearTimeout(this.hideDelay);
            this.hideDelay = null;
          }
          this.tip = tip;
          this.emitter.emit('tipchange');
          return;
        }
      }

      this.tip = tip;
      if (this.hideDelay) {
        clearTimeout(this.hideDelay);
        this.hideDelay = null;
        this.emitter.emit('tipchange');
      } else {
        this.showDelay = setTimeout(() => {
          this.showDelay = null;
          this.emitter.emit('tipchange');
        }, 350) as any;
      }
    } else {
      if (this.showDelay) {
        clearTimeout(this.showDelay);
        this.showDelay = null;
      } else {
        this.hideDelay = setTimeout(() => {
          this.hideDelay = null;
        }, 100) as any;
      }
      this.tip = null;

      this.emitter.emit('tipchange');
    }