/*******************************************************************************
* Copyright (c) 2004, 2010 QNX Software Systems and others.
* 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
*
* 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.ICastToArray;
import org.eclipse.cdt.debug.internal.ui.CDebugImages;
import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
import org.eclipse.cdt.utils.ui.controls.ControlFactory;
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.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
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.SWT;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.ISources;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.expressions.IEvaluationContext;
/**
* The delegate of the "Display As Array" action.
*/
public class CastToArrayActionHandler extends AbstractHandler {
protected class CastToArrayDialog extends Dialog {
private String fType = ""; //$NON-NLS-1$
private int fFirstIndex = 0;
private int fLength = 0;
private Button fOkButton;
private Label fErrorMessageLabel;
private Text fFirstIndexText;
private Text fLengthText;
public CastToArrayDialog( Shell parentShell, String initialType, int initialStart, int initialLength ) {
super( parentShell );
fType = (initialType == null) ? "" : initialType; //$NON-NLS-1$
fFirstIndex = initialStart;
fLength = initialLength;
}
protected String getType() {
return fType;
}
protected int getFirstIndex() {
return fFirstIndex;
}
protected int getLength() {
return fLength;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
*/
protected void configureShell( Shell newShell ) {
super.configureShell( newShell );
newShell.setText( ActionMessages.getString( "CastToArrayActionDelegate.0" ) ); //$NON-NLS-1$
newShell.setImage( CDebugImages.get( CDebugImages.IMG_LCL_DISPLAY_AS_ARRAY ) );
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite)
*/
protected void createButtonsForButtonBar( Composite parent ) {
// create OK and Cancel buttons by default
fOkButton = createButton( parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true );
createButton( parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false );
//do this here because setting the text will set enablement on the ok button
/*
* fTypeText.setFocus(); if ( fType != null ) { fTypeText.setText( fType ); fTypeText.selectAll(); fFirstIndexText.setText( String.valueOf(
* fFirstIndex ) ); fLengthText.setText( String.valueOf( fLength ) ); }
*/
fFirstIndexText.setText( String.valueOf( fFirstIndex ) );
fLengthText.setText( String.valueOf( fLength ) );
}
protected Label getErrorMessageLabel() {
return fErrorMessageLabel;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
*/
protected Control createDialogArea( Composite parent ) {
Composite composite = (Composite)super.createDialogArea( parent );
createDialogFields( composite );
fErrorMessageLabel = new Label( composite, SWT.NONE );
fErrorMessageLabel.setLayoutData( new GridData( GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL ) );
fErrorMessageLabel.setFont( parent.getFont() );
return composite;
}
private void createDialogFields( Composite parent ) {
Composite composite = ControlFactory.createComposite( parent, 4 );
((GridData)composite.getLayoutData()).widthHint = convertHorizontalDLUsToPixels( IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH );
((GridLayout)composite.getLayout()).makeColumnsEqualWidth = true;
Label label = ControlFactory.createLabel( composite, ActionMessages.getString( "CastToArrayActionDelegate.1" ) ); //$NON-NLS-1$
((GridData)label.getLayoutData()).horizontalSpan = 3;
fFirstIndexText = ControlFactory.createTextField( composite );
fFirstIndexText.addModifyListener( new ModifyListener() {
public void modifyText( ModifyEvent e ) {
validateInput();
}
} );
label = ControlFactory.createLabel( composite, ActionMessages.getString( "CastToArrayActionDelegate.2" ) ); //$NON-NLS-1$
((GridData)label.getLayoutData()).horizontalSpan = 3;
fLengthText = ControlFactory.createTextField( composite );
fLengthText.addModifyListener( new ModifyListener() {
public void modifyText( ModifyEvent e ) {
validateInput();
}
} );
}
protected void validateInput() {
boolean enabled = true;
String message = ""; //$NON-NLS-1$
String firstIndex = fFirstIndexText.getText().trim();
if ( firstIndex.length() == 0 ) {
message = ActionMessages.getString( "CastToArrayActionDelegate.3" ); //$NON-NLS-1$
enabled = false;
}
else {
try {
Integer.parseInt( firstIndex );
}
catch( NumberFormatException e ) {
message = ActionMessages.getString( "CastToArrayActionDelegate.4" ); //$NON-NLS-1$
enabled = false;
}
if ( enabled ) {
String lengthText = fLengthText.getText().trim();
if ( lengthText.length() == 0 ) {
message = ActionMessages.getString( "CastToArrayActionDelegate.5" ); //$NON-NLS-1$
enabled = false;
}
else {
int length = -1;
try {
length = Integer.parseInt( lengthText );
}
catch( NumberFormatException e ) {
message = ActionMessages.getString( "CastToArrayActionDelegate.6" ); //$NON-NLS-1$
enabled = false;
}
if ( enabled && length < 1 ) {
message = ActionMessages.getString( "CastToArrayActionDelegate.7" ); //$NON-NLS-1$
enabled = false;
}
}
}
}
fOkButton.setEnabled( enabled );
getErrorMessageLabel().setText( message );
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int)
*/
protected void buttonPressed( int buttonId ) {
if ( buttonId == IDialogConstants.OK_ID ) {
String firstIndex = fFirstIndexText.getText().trim();
String lengthText = fLengthText.getText().trim();
try {
fFirstIndex = Integer.parseInt( firstIndex );
fLength = Integer.parseInt( lengthText );
}
catch( NumberFormatException e ) {
fFirstIndex = 0;
fLength = 0;
}
}
else {
fType = null;
}
super.buttonPressed( buttonId );
}
}
private ICastToArray[] fCastableItems = new ICastToArray[0];
private IStatus fStatus = null;
private IWorkbenchPart fTargetPart = null;
public CastToArrayActionHandler() {
super();
}
public Object execute(ExecutionEvent event) throws ExecutionException {
fTargetPart = HandlerUtil.getActivePartChecked(event);
if ( getCastToArray() == null || getCastToArray().length == 0 )
return null;
BusyIndicator.showWhile( Display.getCurrent(), new Runnable() {
public void run() {
try {
doAction( getCastToArray() );
setStatus( null );
}
catch( DebugException e ) {
setStatus( e.getStatus() );
}
}
} );
if ( getStatus() != null && !getStatus().isOK() ) {
IWorkbenchWindow window = CDebugUIPlugin.getActiveWorkbenchWindow();
if ( window != null ) {
CDebugUIPlugin.errorDialog( ActionMessages.getString( "CastToArrayActionDelegate.8" ), getStatus() ); //$NON-NLS-1$
}
else {
CDebugUIPlugin.log( getStatus() );
}
}
return null;
}
@Override
public void setEnabled(Object evaluationContext) {
ICastToArray[] castableItems = getCastToArray(evaluationContext);
setBaseEnabled(castableItems.length > 0);
setCastToArray(castableItems);
}
private ICastToArray[] getCastToArray(Object evaluationContext) {
List<ICastToArray> castableItems = new ArrayList<ICastToArray>();
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(), ICastToArray.class);
if (element instanceof ICastToArray) {
if (((ICastToArray)element).canCastToArray()) {
castableItems.add((ICastToArray)element);
}
}
}
}
}
return castableItems.toArray(new ICastToArray[castableItems.size()]);
}
protected ICastToArray[] getCastToArray() {
return fCastableItems;
}
protected void setCastToArray( ICastToArray[] castableItems ) {
fCastableItems = castableItems;
}
public IStatus getStatus() {
return fStatus;
}
public void setStatus( IStatus status ) {
fStatus = status;
}
protected void doAction( ICastToArray[] castableItems ) throws DebugException {
String currentType = castableItems[0].getCurrentType().trim();
CastToArrayDialog dialog = new CastToArrayDialog( CDebugUIPlugin.getActiveWorkbenchShell(), currentType, 0, 1 );
if ( dialog.open() == Window.OK ) {
int firstIndex = dialog.getFirstIndex();
int lastIndex = dialog.getLength();
for ( ICastToArray castableItem : castableItems ) {
castableItem.castToArray( firstIndex, lastIndex );
}
if ( getSelectionProvider() != null )
getSelectionProvider().setSelection( new StructuredSelection( castableItems ) );
}
}
private ISelectionProvider getSelectionProvider() {
return (fTargetPart instanceof IDebugView) ? ((IDebugView)fTargetPart).getViewer() : null;
}
}