LayoutManager
public function installUI(c:Component):VoidDescription copied from ComponentUI
Configures the specified component appropriate for the look and feel.
This method is invoked when the ComponentUI instance is being installed
as the UI delegate on the specified component. This method should
completely configure the component for the look and feel,
including the following:
LayoutManager on the component if necessary.
public function uninstallUI(c:Component):VoidDescription copied from ComponentUI
Reverses configuration which was done on the specified component during
installUI. This method is invoked when this
ComponentUI instance is being removed as the UI delegate
for the specified component. This method should undo the
configuration performed in installUI, being careful to
leave the Component instance in a clean state (no
extraneous listeners, look-and-feel-specific property objects, etc.).
This should include the following:
public function create(c:Component):VoidDescription copied from ComponentUI
Notifies this UI delegate that it's time to create the specified
component's ui MCs. This method is invoked by Component
when the specified component is being created.
In general this method need not be overridden by subclasses; all look-and-feel ui creating code should reside in this method.
public function paint(c:Component, g:Graphics, b:Rectangle):VoidDescription copied from ComponentUI
Notifies this UI delegate that it's time to paint the specified
component. This method is invoked by Component
when the specified component is being painted.
In general this method need be overridden by subclasses; all look-and-feel rendering code should reside in this method. And there is a default background paint method, you should call it in your overridden paint method.
public function getPreferredSize(c:Component):DimensionDescription copied from ComponentUI
Returns the specified component's preferred size appropriate for
the look and feel. If null is returned, the preferred
size will be calculated by the component's layout manager instead
(this is the preferred approach for any component with a specific
layout manager installed). The default implementation of this
method returns null.
public function getMaximumSize(c:Component):DimensionDescription copied from ComponentUI
Returns the specified component's maximum size appropriate for
the look and feel. If null is returned, the maximum
size will be calculated by the component's layout manager instead
(this is the preferred approach for any component with a specific
layout manager installed). The default implementation of this
method invokes getPreferredSize and returns that value.
public function getMinimumSize(c:Component):DimensionDescription copied from ComponentUI
Returns the specified component's minimum size appropriate for
the look and feel. If null is returned, the minimum
size will be calculated by the component's layout manager instead
(this is the preferred approach for any component with a specific
layout manager installed). The default implementation of this
method invokes getPreferredSize and returns that value.
public function layoutContainer(target:Container):Voidpublic function preferredLayoutSize(target:Container):Dimension
target |
| Error | when the target is not a JScrollBar |
public function maximumLayoutSize(target:Container):Dimension
target |
| Error | when the target is not a JScrollBar |
public function minimumLayoutSize(target:Container):DimensionDescription copied from LayoutManager
Calculates the minimum size dimensions for the specified container, given the components it contains.
public function getLayoutAlignmentX(target:Container):NumberDescription copied from LayoutManager
Returns the alignment along the x axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.
public function getLayoutAlignmentY(target:Container):NumberDescription copied from LayoutManager
Returns the alignment along the y axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.
public function addLayoutComponent(comp:Component, constraints:Object):VoidDescription copied from LayoutManager
Adds the specified component to the layout, using the specified constraint object.
public function removeLayoutComponent(comp:Component):Voidpublic function invalidateLayout(target:Container):VoidDescription copied from LayoutManager
Invalidates the layout, indicating that if the layout manager has cached information it should be discarded.