/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
*
* 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.android.ide.eclipse.adt.internal.editors.layout.parts;
import com.android.ide.eclipse.adt.internal.editors.AndroidEditor;
import com.android.ide.eclipse.adt.internal.editors.descriptors.ElementDescriptor;
import com.android.ide.eclipse.adt.internal.editors.layout.LayoutEditor;
import com.android.ide.eclipse.adt.internal.editors.layout.LayoutEditor.UiEditorActions;
import com.android.ide.eclipse.adt.internal.editors.uimodel.UiElementNode;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.gef.commands.Command;
/**
* A command that knows how to instantiate a new element based on a given {@link ElementDescriptor},
* the parent {@link UiElementEditPart} and an optional target location.
*
* @since GLE1
*/
public class ElementCreateCommand extends Command {
/** Descriptor of the new element to create */
private final ElementDescriptor mDescriptor;
/** The edit part that hosts the new edit part */
private final UiElementEditPart mParentPart;
/** The drop location in parent coordinates */
private final Point mTargetPoint;
/**
* Creates a new {@link ElementCreateCommand}.
*
* @param descriptor Descriptor of the new element to create
* @param targetPart The edit part that hosts the new edit part
* @param targetPoint The drop location in parent coordinates
*/
public ElementCreateCommand(ElementDescriptor descriptor,
UiElementEditPart targetPart, Point targetPoint) {
mDescriptor = descriptor;
mParentPart = targetPart;
mTargetPoint = targetPoint;
}
// --- Methods inherited from Command ---
@Override
public boolean canExecute() {
return mDescriptor != null &&
mParentPart != null &&
mParentPart.getUiNode() != null &&
mParentPart.getUiNode().getEditor() instanceof LayoutEditor;
}
@Override
public void execute() {
super.execute();
UiElementNode uiParent = mParentPart.getUiNode();
if (uiParent != null) {
final AndroidEditor editor = uiParent.getEditor();
if (editor instanceof LayoutEditor) {
((LayoutEditor) editor).wrapUndoRecording(
String.format("Create %1$s", mDescriptor.getXmlLocalName()),
new Runnable() {
public void run() {
UiEditorActions actions = ((LayoutEditor) editor).getUiEditorActions();
if (actions != null) {
DropFeedback.addElementToXml(mParentPart, mDescriptor, mTargetPoint,
actions);
}
}
});
}
}
}
@Override
public void redo() {
throw new UnsupportedOperationException("redo not supported by this command"); //$NON-NLS-1$
}
@Override
public void undo() {
throw new UnsupportedOperationException("undo not supported by this command"); //$NON-NLS-1$
}
}
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