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Java 2 Platform SE v1.3.1: Class ViewportLayout
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JavaTM 2 Platform
Std. Ed. v1.3.1
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javax.swing
Class ViewportLayout

java.lang.Object
  |
  +--javax.swing.ViewportLayout
All Implemented Interfaces:
LayoutManager, Serializable
public class ViewportLayout
extends Object
implements LayoutManager, Serializable

The default layout manager for JViewport. ViewportLayout defines a policy for layout that should be useful for most applications. The viewport makes its view the same size as the viewport, however it will not make the view smaller than its minimum size. As the viewport grows the view is kept bottom justified until the entire view is visible, subsequently the view is kept top justified.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. A future release of Swing will provide support for long term persistence.

See Also:
Serialized Form

Constructor Summary
ViewportLayout()
           
 
Method Summary
 void addLayoutComponent(String name, Component c)
          Adds the specified component to the layout.
 void layoutContainer(Container parent)
          Called by the AWT when the specified container needs to be laid out.
 Dimension minimumLayoutSize(Container parent)
          Returns the minimum dimensions needed to layout the components contained in the specified target container.
 Dimension preferredLayoutSize(Container parent)
          Returns the preferred dimensions for this layout given the components in the specified target container.
 void removeLayoutComponent(Component c)
          Removes the specified component from the layout.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ViewportLayout

public ViewportLayout()
Method Detail

addLayoutComponent

public void addLayoutComponent(String name,
                               Component c)
Adds the specified component to the layout. Not used by this class.
Specified by:
addLayoutComponent in interface LayoutManager
Parameters:
name - the name of the component
comp - the the component to be added

removeLayoutComponent

public void removeLayoutComponent(Component c)
Removes the specified component from the layout. Not used by this class.
Specified by:
removeLayoutComponent in interface LayoutManager
Parameters:
comp - the component to remove

preferredLayoutSize

public Dimension preferredLayoutSize(Container parent)
Returns the preferred dimensions for this layout given the components in the specified target container.
Specified by:
preferredLayoutSize in interface LayoutManager
Parameters:
target - the component which needs to be laid out
Returns:
a Dimension object containing the preferred dimensions
See Also:
minimumLayoutSize(java.awt.Container)

minimumLayoutSize

public Dimension minimumLayoutSize(Container parent)
Returns the minimum dimensions needed to layout the components contained in the specified target container.
Specified by:
minimumLayoutSize in interface LayoutManager
Parameters:
target - the component which needs to be laid out
Returns:
a Dimension object containing the minimum dimensions
See Also:
preferredLayoutSize(java.awt.Container)

layoutContainer

public void layoutContainer(Container parent)
Called by the AWT when the specified container needs to be laid out.
Specified by:
layoutContainer in interface LayoutManager
Parameters:
parent - the container to lay out
Throws:
AWTError - if the target isn't the container specified to the BoxLayout constructor
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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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