/*
* Copyright 2009 Sven Meier
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package wicketdnd.examples;
import java.util.Set;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.model.IModel;
import wicketdnd.DragSource;
import wicketdnd.DropTarget;
import wicketdnd.Location;
import wicketdnd.Operation;
import wicketdnd.Reject;
import wicketdnd.Transfer;
import wickettree.AbstractTree.State;
import wickettree.DefaultNestedTree;
import wickettree.NestedTree;
/**
* @author Sven Meier
*/
public class TreeExample extends Example
{
public TreeExample(String id)
{
super(id);
final FooTreeProvider provider = new FooTreeProvider();
final NestedTree<Foo> tree = new DefaultNestedTree<Foo>("tree", provider)
{
@Override
protected Component newContentComponent(String arg0, IModel<Foo> arg1)
{
Component component = super.newContentComponent(arg0, arg1);
component.setOutputMarkupId(true);
return component;
}
};
tree.add(new DragSource()
{
@Override
public Set<Operation> getOperations()
{
return dragOperations();
}
@Override
public String[] getTypes()
{
return types();
}
@Override
public void onAfterDrop(AjaxRequestTarget target, Transfer transfer)
{
if (transfer.getOperation() == Operation.MOVE)
{
Foo foo = transfer.getData();
provider.remove(foo);
foo.remove();
target.add(tree);
}
}
}.drag("span.tree-content"));
tree.add(new DropTarget()
{
@Override
public Set<Operation> getOperations()
{
return dropOperations();
}
@Override
public String[] getTypes()
{
return types();
}
@Override
public void onDrag(AjaxRequestTarget target, Location location)
{
if (location.getComponent() != tree)
{
Foo foo = location.getModelObject();
if (tree.getState(foo) == State.COLLAPSED) {
tree.expand(foo);
}
}
}
@Override
public void onDrop(AjaxRequestTarget target, Transfer transfer, Location location)
throws Reject
{
if (location.getComponent() == tree)
{
provider.add(operate(transfer));
}
else
{
Foo foo = location.getModelObject();
if (foo.isAncestor(transfer.getData()))
{
transfer.reject();
}
switch (location.getAnchor())
{
case CENTER :
if (foo == transfer.getData())
{
transfer.reject();
}
provider.add(operate(transfer), foo);
tree.expand(foo);
break;
case TOP :
provider.addBefore(operate(transfer), foo);
break;
case BOTTOM :
provider.addAfter(operate(transfer), foo);
break;
default :
transfer.reject();
}
}
target.add(tree);
}
}.dropCenter("span.tree-content, div.treeContainer").dropTopAndBottom("div.tree-branch"));
// Note: CSS selector 'or' (comma) doesn't work with prototype < 1.7
tree.setOutputMarkupId(true);
add(tree);
}
}