Examples of java.awt.LayoutManager

java.awt.LayoutManager
Defines the interface for classes that know how to lay out Containers.
Swing's painting architecture assumes the children of a JComponent do not overlap. If a JComponent's LayoutManager allows children to overlap, the JComponent must override isOptimizedDrawingEnabled to return false. @see Container @see javax.swing.JComponent#isOptimizedDrawingEnabled @author Sami Shaio @author Arthur van Hoff

  }


  @Override
  public boolean isChildVisible(Component child) {
    JPanel jpanel = (JPanel) getWidget();
    LayoutManager layout = jpanel.getLayout();
    if (layout == null) {
      return child.isVisible();
    } else {
      LayoutAdapter layoutAdapter = getLayoutAdapter();
      return layoutAdapter.isWidgetVisible(child);

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  }


  @Override
  public void showChild(Component widget) {
    JPanel jpanel = (JPanel) getWidget();
    LayoutManager layout = jpanel.getLayout();
    if (layout == null) {
      if (!widget.isVisible())
        widget.setVisible(true);
    } else {
      LayoutAdapter layoutAdapter = getLayoutAdapter();

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  }


  @Override
  public void adjustLayout(Component widget) {
    JPanel jpanel = (JPanel) getWidget();
    LayoutManager layout = jpanel.getLayout();
    if (layout != null)
      getLayoutAdapter().adjustLayout(widget);
  }

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  }


  @Override
  public boolean isSelectionAlignResize(String id) {
    JPanel jpanel = (JPanel) getWidget();
    LayoutManager layout = jpanel.getLayout();
    if (layout != null)
      return getLayoutAdapter().isSelectionAlignResize(id);
    else
      return true;
  }

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  }


  @Override
  public void addChildByConstraints(Component child, Object constraints) {
    JPanel panel = (JPanel) getWidget();
    LayoutManager layout = panel.getLayout();
    if (layout == null) {
      child.setBounds((Rectangle) constraints);
      panel.add(child);
    } else {
      getLayoutAdapter().addChildByConstraints(child, constraints);

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  }


  @Override
  public Object getChildConstraints(Component child) {
    JPanel panel = (JPanel) getWidget();
    LayoutManager layout = panel.getLayout();
    if (layout == null) {
      return child.getBounds();
    } else {
      return getLayoutAdapter().getChildConstraints(child);
    }

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  }


  @Override
  public IWidgetPropertyDescriptor[] getConstraintsProperties(Component widget) {
    JPanel panel = (JPanel) getWidget();
    LayoutManager layout = panel.getLayout();
    if (layout == null){
      return null;
    }else{
      return getLayoutAdapter().getConstraintsProperties(widget);
    }

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  @Override
  public boolean needGenBoundCode(Component child) {
    if(child instanceof JMenuBar)
      return false;
    Container panel = (Container) getContentPane();
    LayoutManager layout = panel.getLayout();
    return layout == null;
  }

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  @Override
  public boolean drop(Point p) {
    if (isDroppingPopup() || isDroppingMenuItem() || isDroppingMenuBar())
      return super.drop(p);
    JPanel jpanel = (JPanel) adaptable.getWidget();
    LayoutManager layout = jpanel.getLayout();
    if (layout == null) {
      int state = adaptable.getState();
      adaptable.clearAllSelected();
      for (WidgetAdapter adapter : adaptable.getDropWidget()) {
        Component child = adapter.getParentContainer();

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  @Override
  public boolean dragEnter(Point p) {
    if (isDroppingMenuItem() || isDroppingMenuBar())
      return super.dragEnter(p);
    JPanel jpanel = (JPanel) adaptable.getWidget();
    LayoutManager layout = jpanel.getLayout();
    if (layout != null) {
      LayoutAdapter layoutAdapter = ((CompositeAdapter) adaptable).getLayoutAdapter();
      return layoutAdapter.dragEnter(p);
    } else
      return true;

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