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/*******************************************************************************
* Copyright (c) 2004, 2012 QNX Software Systems 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:
* QNX Software Systems - Initial API and implementation
* Nokia - adapt to new command framework
*******************************************************************************/
package org.eclipse.cdt.debug.internal.ui.actions;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.cdt.debug.core.model.ICastToType;
import org.eclipse.cdt.debug.internal.ui.CDebugImages;
import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.expressions.IEvaluationContext;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.ui.IDebugView;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.ISources;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* The delegate of the "Cast To Type" action.
*/
public class CastToTypeActionHandler extends AbstractHandler {
static protected class CastToTypeInputValidator implements IInputValidator {
public CastToTypeInputValidator() {
}
@Override
public String isValid(String newText) {
if (newText.trim().length() == 0) {
return ActionMessages.getString("CastToTypeActionDelegate.0"); //$NON-NLS-1$
}
return null;
}
}
protected class CastToTypeDialog extends InputDialog {
public CastToTypeDialog(Shell parentShell, String initialValue) {
super(parentShell, ActionMessages.getString("CastToTypeActionDelegate.1"), //$NON-NLS-1$
ActionMessages.getString("CastToTypeActionDelegate.2"), //$NON-NLS-1$
initialValue, new CastToTypeInputValidator());
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
*/
@Override
protected void configureShell(Shell shell) {
super.configureShell(shell);
shell.setImage(CDebugImages.get(CDebugImages.IMG_LCL_CAST_TO_TYPE));
}
}
private ICastToType[] fCastableItems = new ICastToType[0];
private IStatus fStatus = null;
private IWorkbenchPart fTargetPart;
public CastToTypeActionHandler() {
super();
}
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
fTargetPart = HandlerUtil.getActivePartChecked(event);
if (getCastToType() == null || getCastToType().length == 0)
return null;
BusyIndicator.showWhile(Display.getCurrent(), new Runnable() {
@Override
public void run() {
try {
doAction(getCastToType());
setStatus(null);
} catch (DebugException e) {
setStatus(e.getStatus());
}
}
});
if (getStatus() != null && !getStatus().isOK()) {
IWorkbenchWindow window = CDebugUIPlugin.getActiveWorkbenchWindow();
if (window != null) {
CDebugUIPlugin.errorDialog(ActionMessages.getString("CastToTypeActionDelegate.3"), getStatus()); //$NON-NLS-1$
} else {
CDebugUIPlugin.log(getStatus());
}
}
return null;
}
@Override
public void setEnabled(Object evaluationContext) {
ICastToType[] castableItems = getCastToType(evaluationContext);
setBaseEnabled(castableItems.length > 0);
setCastToType(castableItems);
}
private ICastToType[] getCastToType(Object evaluationContext) {
List<ICastToType> castableItems = new ArrayList<>();
if (evaluationContext instanceof IEvaluationContext) {
Object s = ((IEvaluationContext) evaluationContext).getVariable(ISources.ACTIVE_MENU_SELECTION_NAME);
if (s instanceof IStructuredSelection) {
Iterator<?> iter = ((IStructuredSelection) s).iterator();
while (iter.hasNext()) {
Object element = DebugPlugin.getAdapter(iter.next(), ICastToType.class);
if (element instanceof ICastToType) {
if (((ICastToType) element).canCast()) {
castableItems.add((ICastToType) element);
}
}
}
}
}
return castableItems.toArray(new ICastToType[castableItems.size()]);
}
protected ICastToType[] getCastToType() {
return fCastableItems;
}
protected void setCastToType(ICastToType[] castableItems) {
fCastableItems = castableItems;
}
public IStatus getStatus() {
return fStatus;
}
public void setStatus(IStatus status) {
fStatus = status;
}
protected void doAction(ICastToType[] castableItems) throws DebugException {
String currentType = castableItems[0].getCurrentType().trim();
CastToTypeDialog dialog = new CastToTypeDialog(CDebugUIPlugin.getActiveWorkbenchShell(), currentType);
if (dialog.open() == Window.OK) {
String newType = dialog.getValue().trim();
for (ICastToType castableItem : castableItems) {
castableItem.cast(newType);
}
if (getSelectionProvider() != null)
getSelectionProvider().setSelection(new StructuredSelection(castableItems));
}
}
private ISelectionProvider getSelectionProvider() {
return (fTargetPart instanceof IDebugView) ? ((IDebugView) fTargetPart).getViewer() : null;
}
}
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