import { QWidget } from "./QWidget";
import { QObject, QObjectSignals } from "../QtCore/QObject";

// All Layouts should extend this abstract class.

/**

> Abstract class to add functionalities common to all Layout.

**This class implements all methods, properties of Qt's [QLayout class](https://doc.qt.io/qt-5/qlayout.html) so that it can be inherited by all layouts**

`QLayout` is an abstract class and hence no instances of the same should be created.

### Example

```javascript
const {
  QLayout,
  FlexLayout,
  GridLayout,
  QPushButton,
  QWidget
} from "@vixen-js/core";

// addChildToLayout can accept any layout since it expects QLayout
const addChildToLayout = (layout: QLayout, widget: QWidget) => {
  layout.addWidget(widget);
};

addChildToLayout(new FlexLayout(), new QPushButton());
addChildToLayout(new GridLayout(), new QWidget());
```
 */
export abstract class QLayout<
  Signals extends QLayoutSignals = QLayoutSignals
> extends QObject<Signals> {
  type = "layout";
  abstract addWidget(childWidget: QWidget, ...args: any[]): void;
  abstract removeWidget(childWidget: QWidget): void;
  setSizeConstraint(constraint: SizeConstraint): void {
    this.setProperty("sizeConstraint", constraint);
  }
  sizeConstraint(): SizeConstraint {
    return this.property("sizeConstraint").toInt();
  }
  setSpacing(spacing: number): void {
    this.setProperty("spacing", spacing);
  }
  spacing(): number {
    return this.property("spacing").toInt();
  }
  activate(): boolean {
    return this.native?.activate();
  }
  setEnabled(enable: boolean): void {
    this.native?.setEnabled(enable);
  }
  isEnabled(): boolean {
    return this.native?.isEnabled();
  }
  setContentsMargins(
    left: number,
    top: number,
    right: number,
    bottom: number
  ): void {
    this.native?.setContentsMargins(left, top, right, bottom);
  }
  invalidate(): void {
    this.native?.invalidate();
  }
  update(): void {
    this.native?.update();
  }
}

export enum SizeConstraint {
  SetDefaultConstraint = 0,
  SetNoConstraint = 1,
  SetMinimumSize = 2,
  SetFixedSize = 3,
  SetMaximumSize = 4,
  SetMinAndMaxSize = 5,
}

export type QLayoutSignals = QObjectSignals;