/*******************************************************************************
* Copyright 2011 Google Inc. All Rights Reserved.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* 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 com.google.gdt.eclipse.designer.gxt.gef.policy;
import com.google.gdt.eclipse.designer.gxt.model.widgets.PortalInfo;
import com.google.gdt.eclipse.designer.gxt.model.widgets.PortalInfo.ColumnInfo;
import com.google.gdt.eclipse.designer.gxt.model.widgets.PortletInfo;
import org.eclipse.wb.core.gef.command.EditCommand;
import org.eclipse.wb.core.gef.policy.layout.LayoutPolicyUtils2;
import org.eclipse.wb.core.gef.policy.layout.LayoutPolicyUtils2.IPasteProcessor;
import org.eclipse.wb.core.gef.policy.layout.flow.AbstractFlowLayoutEditPolicy;
import org.eclipse.wb.core.gef.policy.validator.LayoutRequestValidators;
import org.eclipse.wb.core.model.JavaInfo;
import org.eclipse.wb.gef.core.Command;
import org.eclipse.wb.gef.core.EditPart;
import org.eclipse.wb.gef.core.policies.EditPolicy;
import org.eclipse.wb.gef.core.policies.ILayoutRequestValidator;
import org.eclipse.wb.gef.core.requests.PasteRequest;
import org.eclipse.wb.gef.core.requests.Request;
import org.eclipse.wb.gef.tree.policies.LayoutEditPolicy;
/**
* {@link LayoutEditPolicy} for {@link ColumnInfo} in {@link PortalInfo}.
*
* @author scheglov_ke
* @coverage ExtGWT.gef.policy
*/
public final class PortalLayoutEditPolicy extends AbstractFlowLayoutEditPolicy {
public static final ILayoutRequestValidator VALIDATOR = LayoutRequestValidators.or(
LayoutRequestValidators.modelType(ColumnInfo.class),
LayoutRequestValidators.modelType(PortletInfo.class));
private final PortalInfo m_portal;
////////////////////////////////////////////////////////////////////////////
//
// Constructor
//
////////////////////////////////////////////////////////////////////////////
public PortalLayoutEditPolicy(PortalInfo portal) {
m_portal = portal;
}
////////////////////////////////////////////////////////////////////////////
//
// Decorate child
//
////////////////////////////////////////////////////////////////////////////
@Override
protected void decorateChild(EditPart child) {
Object model = child.getModel();
if (model instanceof ColumnInfo) {
ColumnInfo column = (ColumnInfo) model;
child.installEditPolicy(
EditPolicy.SELECTION_ROLE,
new PortalColumnSelectionEditPolicy(column));
}
}
////////////////////////////////////////////////////////////////////////////
//
// Requests
//
////////////////////////////////////////////////////////////////////////////
@Override
protected boolean isGoodReferenceChild(Request request, EditPart editPart) {
return editPart.getModel() instanceof ColumnInfo;
}
@Override
protected ILayoutRequestValidator getRequestValidator() {
return VALIDATOR;
}
////////////////////////////////////////////////////////////////////////////
//
// AbstractFlowLayoutEditPolicy
//
////////////////////////////////////////////////////////////////////////////
@Override
protected boolean isHorizontal(Request request) {
return true;
}
////////////////////////////////////////////////////////////////////////////
//
// Commands
//
////////////////////////////////////////////////////////////////////////////
@Override
protected Command getCreateCommand(final Object newObject, final Object referenceObject) {
return new EditCommand(m_portal) {
@Override
protected void executeEdit() throws Exception {
command_CREATE(newObject, referenceObject);
}
};
}
@Override
protected Command getPasteCommand(final PasteRequest request, final Object referenceObject) {
return LayoutPolicyUtils2.getPasteCommand(
m_portal,
request,
JavaInfo.class,
new IPasteProcessor<JavaInfo>() {
public void process(JavaInfo newObject) throws Exception {
command_CREATE(newObject, referenceObject);
}
});
}
@Override
protected Command getMoveCommand(final Object moveObject, final Object referenceObject) {
return new EditCommand(m_portal) {
@Override
protected void executeEdit() throws Exception {
command_MOVE(moveObject, referenceObject);
}
};
}
@Override
protected Command getAddCommand(final Object addObject, final Object referenceObject) {
return new EditCommand(m_portal) {
@Override
protected void executeEdit() throws Exception {
command_ADD(addObject, referenceObject);
}
};
}
private void command_CREATE(Object newObject, Object referenceObject) throws Exception {
if (newObject instanceof PortletInfo) {
PortletInfo portlet = (PortletInfo) newObject;
ColumnInfo nextColumn = (ColumnInfo) referenceObject;
ColumnInfo column = m_portal.command_CREATE(nextColumn);
column.command_CREATE(portlet, null);
}
}
private void command_MOVE(Object object, Object referenceObject) throws Exception {
if (object instanceof ColumnInfo) {
ColumnInfo column = (ColumnInfo) object;
ColumnInfo nextColumn = (ColumnInfo) referenceObject;
m_portal.command_MOVE(column, nextColumn);
}
if (object instanceof PortletInfo) {
PortletInfo portlet = (PortletInfo) object;
ColumnInfo nextColumn = (ColumnInfo) referenceObject;
ColumnInfo column = m_portal.command_CREATE(nextColumn);
column.command_MOVE(portlet, null);
}
}
private void command_ADD(Object addObject, Object referenceObject) throws Exception {
command_MOVE(addObject, referenceObject);
}
}