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/*
*(c) Copyright QNX Software Systems Ltd. 2002.
* All Rights Reserved.
*
*/
package org.eclipse.cdt.debug.internal.ui.actions;
import org.eclipse.cdt.debug.core.CDebugModel;
import org.eclipse.cdt.debug.core.model.ICExpressionEvaluator;
import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.model.IDebugElement;
import org.eclipse.debug.core.model.IDebugTarget;
import org.eclipse.debug.core.model.IExpression;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PartInitException;
/**
*
* Enter type comment.
*
* @since Sep 17, 2002
*/
public class AddExpressionActionDelegate extends AbstractEditorActionDelegate
{
/**
* Constructor for AddExpressionActionDelegate.
*/
public AddExpressionActionDelegate()
{
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#run(IAction)
*/
public void run( IAction action )
{
String text = getSelectedText();
ExpressionDialog dlg = new ExpressionDialog( getShell(), text );
if ( dlg.open() != Window.OK )
return;
createExpression( dlg.getExpression() );
}
protected String getSelectedText()
{
ISelection selection = getTargetSelection();
if ( selection != null && selection instanceof ITextSelection )
{
return ((ITextSelection)selection).getText().trim();
}
return ""; //$NON-NLS-1$
}
protected Shell getShell()
{
return ( getTargetPart() != null ) ?
getTargetPart().getSite().getShell() : CDebugUIPlugin.getActiveWorkbenchShell();
}
private void createExpression( final String text )
{
final Display display = CDebugUIPlugin.getStandardDisplay();
if ( display.isDisposed() )
{
return;
}
display.asyncExec( new Runnable()
{
public void run()
{
try
{
IExpression expression = CDebugModel.createExpression( getDebugTarget(), text );
DebugPlugin.getDefault().getExpressionManager().addExpression( expression );
showExpressionView();
}
catch( DebugException e )
{
CDebugUIPlugin.errorDialog( CDebugUIPlugin.getResourceString("internal.ui.actions.AddExpressionActionDelegate.Evaluation_of_expression_failed"), e ); //$NON-NLS-1$
}
}
} );
}
/**
* @see org.eclipse.ui.ISelectionListener#selectionChanged(IWorkbenchPart, ISelection)
*/
public void selectionChanged( IWorkbenchPart part, ISelection selection )
{
IDebugTarget target = null;
if ( part != null && part.getSite().getId().equals( IDebugUIConstants.ID_DEBUG_VIEW ) )
{
if ( selection instanceof IStructuredSelection )
{
Object element = ((IStructuredSelection)selection).getFirstElement();
if ( element != null && element instanceof IDebugElement )
{
IDebugTarget target1 = ((IDebugElement)element).getDebugTarget();
if ( target1 != null && target1 instanceof ICExpressionEvaluator )
{
target = target1;
}
}
}
setDebugTarget( target );
update();
}
}
protected void initializeDebugTarget()
{
setDebugTarget( null );
IAdaptable context = DebugUITools.getDebugContext();
if ( context != null && context instanceof IDebugElement )
{
IDebugTarget target = ((IDebugElement)context).getDebugTarget();
if ( target != null && target instanceof ICExpressionEvaluator )
{
setDebugTarget( target );
}
}
}
/**
* Make the expression view visible or open one if required.
*
*/
protected void showExpressionView()
{
IWorkbenchPage page = CDebugUIPlugin.getActivePage();
if ( page != null )
{
IViewPart part = page.findView( IDebugUIConstants.ID_EXPRESSION_VIEW );
if ( part == null )
{
try
{
page.showView( IDebugUIConstants.ID_EXPRESSION_VIEW );
}
catch( PartInitException e )
{
CDebugUIPlugin.log( e.getStatus() );
}
}
else
{
page.bringToTop( part );
}
}
}
}
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