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

   * @param h the test harness to use
   */
  private void testInvalidLayout(TestHarness h)
  {
    JRootPane rp = new JRootPane();
    LayoutManager l = rp.getLayout();
    JPanel p = new JPanel();
    p.setPreferredSize(new Dimension(100, 100));
    rp.setContentPane(p);
    h.check(l.preferredLayoutSize(rp), new Dimension(100, 100));
    p.setPreferredSize(new Dimension(200, 200));
    h.check(l.preferredLayoutSize(rp), new Dimension(200, 200));
  }

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  public boolean isMoveable() {
    CompositeAdapter parentAdapter = (CompositeAdapter) getParentAdapter();
    if (parentAdapter != null) {
      Component comp = parentAdapter.getWidget();
      if (comp instanceof Container) {
        LayoutManager layoutMgr = ((Container) comp).getLayout();
        if (layoutMgr == null)
          return true;
      }
      return parentAdapter.isChildMoveable(getWidget());
    } else {

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    }
    return bean;
  }


  public static LayoutAdapter getLayoutAdapter(Container container) {
    LayoutManager layout = container.getLayout();
    Class<?> layoutClass = layout.getClass();
    while (layoutClass != null) {
      IConfigurationElement config = layoutAdapters.get(layoutClass.getName());
      if (config != null) {
        try {
          LayoutAdapter layoutAdapter = (LayoutAdapter) config.createExecutableExtension("class");

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  public boolean isDefaultLayout() {
    CompositeAdapter ca = (CompositeAdapter) WidgetAdapter.getWidgetAdapter(container);
    return ca.getDefaultLayout()==getLayoutClass();
  }
  public boolean isPropertyChanged() {
    LayoutManager layout = container.getLayout();
    IStructuredSelection iss = new StructuredSelection(layout);
    IWidgetPropertyDescriptor[] layoutProperties = getLayoutProperties();
    for(IWidgetPropertyDescriptor property:layoutProperties){
      if(property.isPropertySet(null, iss))
        return true;

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public void installUI(JComponent c) {
    super.installUI(c);
    taskPane = (JXTaskPaneContainer)c;
    installDefaults();
    
    LayoutManager manager = taskPane.getLayout();
    
    if (manager == null || manager instanceof UIResource) {
        taskPane.setLayout(createDefaultLayout());
    }
  }

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        return fontMetrics.stringWidth(object.toString());
    }


    @Override
    protected LayoutManager createLayoutManager() {
        return new LayoutManager() {
            public void addLayoutComponent(String name, Component comp) {
                throw new UnsupportedOperationException("This operation is not supported.");
            }


            public void removeLayoutComponent(Component comp) {

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            Dimension size = ui.getMinimumSize(this);
            if (size != null) {
                return new Dimension(size);
            }
        }
        LayoutManager layout = getLayout();
        if (layout != null) {
            return layout.minimumLayoutSize(this);
        }


        return new Dimension();
    }

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            Dimension size = ui.getMaximumSize(this);
            if (size != null) {
                return new Dimension(size);
            }
        }
        LayoutManager layout = getLayout();
        if (layout != null && layout instanceof LayoutManager2) {
            return ((LayoutManager2)layout).maximumLayoutSize(this);
        }
        return new Dimension(Short.MAX_VALUE, Short.MAX_VALUE);
    }

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            setVisible(false);
        }
    }


    public void pack() {
        final LayoutManager layout = getLayout();
        if (layout != null) {
            layout.layoutContainer(this);
        }
    }

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            Dimension size = ui.getMinimumSize(this);
            if (size != null) {
                return new Dimension(size);
            }
        }
        LayoutManager layout = getLayout();
        if (layout != null) {
            return layout.minimumLayoutSize(this);
        }
        return new Dimension();
    }

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