import addon from "../utils/addon";
import { QWidget, QWidgetSignals } from "./QWidget";
import { QFrame, QFrameSignals } from "./QFrame";
import { wrapperCache } from "../core/WrapperCache";
import { NativeElement } from "../core/Component";
import { checkIfNativeElement } from "../utils/helpers";

/**

> Create and control stacked widgets where only one is visible at a time.

* **This class is a JS wrapper around Qt's [QStackedWidget class](https://doc.qt.io/qt-5/qstackedwidget.html)**

### Example

```javascript

const { QMainWindow, QLabel, QStackedWidget } from "@vixen-js/core";

const win = new QMainWindow();
const stacked = new QStackedWidget();

const first = new QLabel();
first.setText('First');

const second = new QLabel();
second.setText('Second');

const third = new QLabel();
third.setText('Third');

stacked.addWidget(first);
stacked.addWidget(second);
stacked.addWidget(third);

stacked.setCurrentWidget(second);
//or
// stacked.setCurrentIndex(1);

win.setCentralWidget(stacked);
win.resize(200, 200);

win.show();
(global as any).win = win;


```
 */
export class QStackedWidget extends QFrame<QStackedWidgetSignals> {
  constructor(arg?: QWidget<QWidgetSignals> | NativeElement) {
    let native: NativeElement;
    if (checkIfNativeElement(arg)) {
      native = arg as NativeElement;
    } else if (arg != null) {
      const parent = arg as QWidget;
      native = new addon.QStackedWidget(parent.native);
    } else {
      native = new addon.QStackedWidget();
    }
    super(native);
  }
  // *** Public Function ***
  addWidget(widget: QWidget): void {
    this.native?.addWidget(widget.native);
    widget.setFlexNodeSizeControlled(true);
  }
  count(): number {
    return this.property("count").toInt();
  }
  currentIndex(): number {
    return this.native?.currentIndex();
  }
  // TODO: QWidget *	currentWidget() const
  // TODO: int 	indexOf(QWidget *widget) const
  // TODO: int 	insertWidget(int index, QWidget *widget)
  removeWidget(widget: QWidget): void {
    this.native?.removeWidget(widget.native);
  }
  // TODO: QWidget *	widget(int index) const

  // *** Public Slots ***
  setCurrentIndex(index: number): void {
    this.native?.setCurrentIndex(index);
  }
  setCurrentWidget(widget: QWidget): void {
    this.native?.setCurrentWidget(widget.native);
  }
}
wrapperCache.registerWrapper("QStackedWidgetWrap", QStackedWidget);

export interface QStackedWidgetSignals extends QFrameSignals {
  onCurrentChange: (index: number) => void;
}