bibliothek.gui.dock.common
Class EmptyMultipleCDockableFactory<F extends MultipleCDockable>

java.lang.Object
  bibliothek.gui.dock.common.EmptyMultipleCDockableFactory<F>

Type Parameters:

F - the type of dockable this factory handles.

All Implemented Interfaces:

MultipleCDockableFactory<F,MultipleCDockableLayout>

Direct Known Subclasses:

NullMultipleCDockableFactory

public abstract class EmptyMultipleCDockableFactory<F extends MultipleCDockable>
extends Object
implements MultipleCDockableFactory<F,MultipleCDockableLayout>

A factory that does not store anything.

Author:

Benjamin Sigg

Constructor Summary

EmptyMultipleCDockableFactory()

Method Summary

MultipleCDockableLayout	create() Creates a new, empty layout.
abstract F	createDockable() Creates a new instance of the MultipleCDockable that is represented by this factory.
boolean	match(F dockable, MultipleCDockableLayout layout) Tells whether the meta-data layout belongs to dockable, meaning write( dockable ) would produce layout and read( layout ) would produce dockable. This method is used to create a pairing of dockables and meta-data.
F	read(MultipleCDockableLayout layout) Creates a MultipleCDockable that gets its layout from layout.
MultipleCDockableLayout	write(F dockable) Collects all the properties of dockable and writes them into a new MultipleCDockableLayout.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EmptyMultipleCDockableFactory

public EmptyMultipleCDockableFactory()

Method Detail

createDockable

public abstract F createDockable()

Creates a new instance of the MultipleCDockable that is represented by this factory.

Returns:

the new dockable, might be null

create

public MultipleCDockableLayout create()

Description copied from interface: MultipleCDockableFactory

Creates a new, empty layout. The contents of the layout will be set using one of the read-methods of MultipleCDockableLayout.

Specified by:

create in interface MultipleCDockableFactory<F extends MultipleCDockable,MultipleCDockableLayout>

Returns:

the new empty layout

read

public F read(MultipleCDockableLayout layout)

Description copied from interface: MultipleCDockableFactory

Creates a MultipleCDockable that gets its layout from layout.

Specified by:

read in interface MultipleCDockableFactory<F extends MultipleCDockable,MultipleCDockableLayout>

Parameters:

layout - the set of properties that can be used to create the new CDockable.

Returns:

the new dockable or null if the layout can't be read

write

public MultipleCDockableLayout write(F dockable)

Description copied from interface: MultipleCDockableFactory

Collects all the properties of dockable and writes them into a new MultipleCDockableLayout.

Specified by:

write in interface MultipleCDockableFactory<F extends MultipleCDockable,MultipleCDockableLayout>

Parameters:

dockable - the element whose properties should be collected

Returns:

the layout that has been written

match

public boolean match(F dockable,
                     MultipleCDockableLayout layout)

Description copied from interface: MultipleCDockableFactory

Tells whether the meta-data layout belongs to dockable, meaning write( dockable ) would produce layout and read( layout ) would produce dockable.
This method is used to create a pairing of dockables and meta-data. Dockables without partner are most likely deleted. If a dockable or some meta-data has more than one potential partner, then one pair is randomly chosen.
This method is primarily used for optimization: assume dockable is shown or known to the view and layout has been read from a file. Normally all dockables produced by this factory would be removed and replaced by newly created dockables. If however this method finds a match between a layout and a dockable, then the dockable can be reused.
The second goal of this method is to help prevent unnecessary events to the CVetoClosingListener for dockables that just get replaced by a "clone".

Specified by:

match in interface MultipleCDockableFactory<F extends MultipleCDockable,MultipleCDockableLayout>

Parameters:

dockable - some element that is shown or known to the view

layout - some layout that will be applied

Returns:

true if dockable would be produced by read(layout).