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/*
* Bibliothek - DockingFrames
* Library built on Java/Swing, allows the user to "drag and drop"
* panels containing any Swing-Component the developer likes to add.
*
* Copyright (C) 2007 Benjamin Sigg
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Benjamin Sigg
* [email protected]
* CH - Switzerland
*/
package bibliothek.gui.dock;
import java.util.Map;
import bibliothek.gui.DockStation;
import bibliothek.gui.Dockable;
import bibliothek.gui.dock.layout.DockConverter;
import bibliothek.gui.dock.layout.DockLayoutInfo;
import bibliothek.gui.dock.layout.DockableProperty;
import bibliothek.gui.dock.layout.LocationEstimationMap;
import bibliothek.gui.dock.perspective.Perspective;
import bibliothek.gui.dock.perspective.PerspectiveDockable;
import bibliothek.gui.dock.perspective.PerspectiveElement;
import bibliothek.gui.dock.station.support.PlaceholderStrategy;
/**
* A {@link DockConverter} which can not only store and load the contents of an
* element, but also create a new {@link DockElement} with the content.
* @author Benjamin Sigg
* @param the type of element which can be written and read by this factory
* @param the type of {@link PerspectiveElement} which can be written and read by this factory
* @param the type of object that stores the contents of a D. If
* clients cannot guarantee that always the same factory will be mapped
* to the same identifier, then L should be set to {@link Object}
* and the methods which receive a L should use
* instanceof before casting the argument.
*/
public interface DockFactory extends DockConverter{
/**
* Tries to estimate the {@link DockableProperty}s of the children of the
* station which is represented by layout.
*
* The children of this station are accessible through children.getChild( ... ), this
* factory may also access the leafs in the tree of {@link Dockable}s through
* children.getSubChild(...).
* Note: this method must not set the successor of any {@link DockableProperty},
* it is the callers responsibility to handle chains of stations.
* @param layout this station
* @param children the children of the station, this method should call
* {@link DockLayoutInfo#setLocation(DockableProperty)} or {@link LocationEstimationMap#setLocation(int, DockableProperty)} and
* {@link LocationEstimationMap#setLocation(int, int, DockableProperty)} for as many children as possible
*/
public void estimateLocations( L layout, LocationEstimationMap children );
/**
* Creates a new {@link DockElement} and changes the layout of the new
* element such that is matches layout.
* @param layout the new layout
* @param placeholders a strategy to detect invalid placeholders, can be null.
* Factories loading only {@link Dockable}s but no {@link DockStation}s can safely ignore this argument.
* @param children some children, note that the map may not contain all elements
* which were present when the layout was created.
* @return a new element or null if layout can't be used
*/
public D layout( L layout, Map children, PlaceholderStrategy placeholders );
/**
* Creates a new {@link DockElement} and changes the layout of the new
* element such that is matches layout. This method should
* not add any children to the element.
* @param layout the new layout
* @param placeholders a strategy to detect invalid placeholders, can be null.
* Factories loading only {@link Dockable}s but no {@link DockStation}s can safely ignore this argument.
* @return a new element or null if layout can't be used
*/
public D layout( L layout, PlaceholderStrategy placeholders );
/**
* Creates an element that can be used by a {@link Perspective} to create a layout
* without creating any {@link DockElement}s. This method may return null only
* if the client is guaranteed not to use a {@link Perspective}.
* @param layout the new layout
* @param children some children, note that the map may not contain all elements
* which were present when the layout was created. Is null if the children of this
* station are going to be ignored.
* @return the new element, can be null, the return value of {@link PerspectiveElement#getFactoryID()} should
* be equal to {@link #getID()}
*/
public P layoutPerspective( L layout, Map children );
/**
* Updates the contents of perspective such that it reflects the contents of layout.
* @param perspective the perspective that is to be updated
* @param layout the layout to apply
* @param children the new children of perspective, is null if the children of this
* station are going to be ignored.
*/
public void layoutPerspective( P perspective, L layout, Map children );
}