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/*******************************************************************************
* Copyright (c) 2007, 2015 Wind River Systems, Inc. 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:
* Anton Leherbauer (Wind River Systems) - initial API and implementation
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.editor;
import java.util.ResourceBundle;
import org.eclipse.cdt.core.model.CModelException;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.core.model.IWorkingCopy;
import org.eclipse.cdt.internal.ui.util.EditorUtility;
import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.cdt.ui.IWorkingCopyManager;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.TextEditorAction;
/**
* Editor action to toggle between source and header files.
*
* @since 4.0
*/
public class ToggleSourceAndHeaderAction extends TextEditorAction {
private static ITranslationUnit fgLastPartnerUnit;
private static ITranslationUnit fgLastSourceUnit;
/**
* Create a toggle source/header action for the given editor.
*
* @param bundle the resource bundle to take the label, tooltip and description from.
* @param prefix the prefix to be prepended to the resource bundle keys
* @param editor the text editor this action is associated with
* @see TextEditorAction#TextEditorAction(ResourceBundle, String, ITextEditor)
*/
public ToggleSourceAndHeaderAction(ResourceBundle bundle, String prefix, ITextEditor editor) {
super(bundle, prefix, editor);
}
@Override
public void run() {
IWorkingCopy currentUnit = getWorkingCopy();
if (currentUnit == null) {
return;
}
ITranslationUnit partnerUnit = computePartnerFile(currentUnit);
if (partnerUnit != null) {
fgLastSourceUnit = currentUnit.getOriginalElement();
fgLastPartnerUnit = partnerUnit;
try {
EditorUtility.openInEditor(partnerUnit);
} catch (PartInitException exc) {
CUIPlugin.log(exc.getStatus());
} catch (CModelException exc) {
CUIPlugin.log(exc.getStatus());
}
}
}
private IWorkingCopy getWorkingCopy() {
IEditorPart editor = getTextEditor();
if (editor == null) {
return null;
}
IEditorInput input = editor.getEditorInput();
IWorkingCopyManager manager = CUIPlugin.getDefault().getWorkingCopyManager();
return manager.getWorkingCopy(input);
}
@Override
public void update() {
setEnabled(getWorkingCopy() != null);
}
/**
* Compute the corresponding translation unit for the given unit.
*
* @param tUnit the current source/header translation unit
* @return the partner translation unit
*/
private ITranslationUnit computePartnerFile(ITranslationUnit tUnit) {
// Try shortcut for fast toggling.
if (fgLastPartnerUnit != null) {
final ITranslationUnit originalUnit;
if (tUnit instanceof IWorkingCopy) {
originalUnit = ((IWorkingCopy) tUnit).getOriginalElement();
} else {
originalUnit = tUnit;
}
if (originalUnit.getTranslationUnit().equals(fgLastPartnerUnit)) {
if (fgLastSourceUnit.exists()) {
// toggle back
return fgLastSourceUnit;
}
}
}
// Search partner file based on filename/extension.
return SourceHeaderPartnerFinder.getPartnerTranslationUnit(tUnit);
}
}
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