Interface PercentLayoutPlatformAdapter
-
public interface PercentLayoutPlatformAdapter
Definition of an interface that encapsulates platform (library) specific access to GUI components that are managed by a percent layout manager.
The family of percent layout managers is intended to work together with different GUI libraries. To achieve this the classes cannot directly access the managed components. They rather implement only the layouting algorithms and delegate to a platform specific adapter when it comes to manipulating components.
This interface defines how such an adapter looks like. It contains methods that can roughly be devided into two different groups: One group allows access to the components currently associated with this layout manager and their layout constraints. The other group supports manipulating of components and accessing their properties.
For each specific GUI library to be supported by percent layouts an adapter class has to be created. This single adapter class will then play together with all different percent layout implementations.
- Version:
- $Id: PercentLayoutPlatformAdapter.java 205 2012-01-29 18:29:57Z oheger $
- Author:
- Oliver Heger
-
-
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description Object
getComponent(int index)
Returns the component with the given index.int
getComponentCount()
Returns the number of components that belong to this layout manager.Object
getConstraints(int index)
Returns the constraints object for the component with the given index.int
getMinimumComponentSize(Object component, boolean vert)
Returns the minimum component size of the specified component for the given axis.int
getPreferredComponentSize(Object component, boolean vert)
Returns the preferred component size of the specified component for the given axis.UnitSizeHandler
getSizeHandler()
Returns the platform specific
implementation.UnitSizeHandler
void
setComponentBounds(Object component, Rectangle bounds)
Sets the bounds of a component.
-
-
-
Method Detail
-
getComponentCount
int getComponentCount()
Returns the number of components that belong to this layout manager.- Returns:
- the number of managed components
-
getComponent
Object getComponent(int index)
Returns the component with the given index.- Parameters:
index
- the index of a component (0-based)- Returns:
- the component with this index
-
getConstraints
Object getConstraints(int index)
Returns the constraints object for the component with the given index.- Parameters:
index
- the index of a component (0-based)- Returns:
- the constraints object for this component
-
getSizeHandler
UnitSizeHandler getSizeHandler()
Returns the platform specific
implementation.UnitSizeHandler
- Returns:
- the
SizeHandler
for this platform
-
getMinimumComponentSize
int getMinimumComponentSize(Object component, boolean vert)
Returns the minimum component size of the specified component for the given axis.- Parameters:
component
- the componentvert
- the direction flag (true
for the y axis, false for the x axis)- Returns:
- the minimum component size
-
getPreferredComponentSize
int getPreferredComponentSize(Object component, boolean vert)
Returns the preferred component size of the specified component for the given axis.- Parameters:
component
- the componentvert
- the direction flag (true
for the y axis, false for the x axis)- Returns:
- the preferred component size
-
-