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/*******************************************************************************
* Copyright (c) 2013, 2016 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Patrik Suzzi <psuzzi@gmail.com> - Bug 494680
******************************************************************************/
package org.eclipse.ui.internal;
import java.util.List;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.e4.ui.model.application.ui.MUIElement;
import org.eclipse.e4.ui.model.application.ui.basic.MCompositePart;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.model.application.ui.basic.MPartStack;
import org.eclipse.e4.ui.model.application.ui.basic.MStackElement;
import org.eclipse.e4.ui.workbench.IPresentationEngine;
import org.eclipse.e4.ui.workbench.modeling.EModelService;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* Our sample handler extends AbstractHandler, an IHandler base class.
* @see org.eclipse.core.commands.IHandler
* @see org.eclipse.core.commands.AbstractHandler
*/
public class SplitHandler extends AbstractHandler {
private EModelService modelService;
private IWorkbenchWindow window;
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
// Only works for the active editor
IEditorPart activeEditor = HandlerUtil.getActiveEditor(event);
if (activeEditor == null)
return null;
MPart editorPart = activeEditor.getSite().getService(MPart.class);
if (editorPart == null)
return null;
window = HandlerUtil.getActiveWorkbenchWindowChecked(event);
// Get services
modelService = editorPart.getContext().get(EModelService.class);
MPartStack stack = getStackFor(editorPart);
if (stack == null)
return null;
window.getShell().setRedraw(false);
try {
// Determine which part has the tags
MStackElement stackSelElement = stack.getSelectedElement();
MPart taggedEditor = editorPart;
if (stackSelElement instanceof MCompositePart) {
List<MPart> innerElements = modelService.findElements(stackSelElement, null, MPart.class);
taggedEditor = innerElements.get(1); // '0' is the composite part
}
if ("false".equals(event.getParameter("Splitter.isHorizontal"))) { //$NON-NLS-1$ //$NON-NLS-2$
if (taggedEditor.getTags().contains(IPresentationEngine.SPLIT_VERTICAL)) {
taggedEditor.getTags().remove(IPresentationEngine.SPLIT_VERTICAL);
} else {
editorPart.getTags().remove(IPresentationEngine.SPLIT_HORIZONTAL);
editorPart.getTags().add(IPresentationEngine.SPLIT_VERTICAL);
}
} else {
if (taggedEditor.getTags().contains(IPresentationEngine.SPLIT_HORIZONTAL)) {
taggedEditor.getTags().remove(IPresentationEngine.SPLIT_HORIZONTAL);
} else {
editorPart.getTags().remove(IPresentationEngine.SPLIT_VERTICAL);
editorPart.getTags().add(IPresentationEngine.SPLIT_HORIZONTAL);
}
}
} finally {
window.getShell().setRedraw(true);
}
return null;
}
private MPartStack getStackFor(MPart part) {
MUIElement presentationElement = part.getCurSharedRef() == null ? part : part.getCurSharedRef();
MUIElement parent = presentationElement.getParent();
while (parent != null && !(parent instanceof MPartStack))
parent = parent.getParent();
return (MPartStack) parent;
}
}
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