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/*******************************************************************************
* Copyright (c) 2005, 2006 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.ui;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.model.IExpression;
import org.eclipse.debug.core.model.IValue;
import org.eclipse.debug.core.model.IVariable;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.VariablesViewModelPresentation;
import org.eclipse.debug.internal.ui.model.elements.ElementContentProvider;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
import org.eclipse.debug.internal.ui.viewers.model.provisional.PresentationContext;
import org.eclipse.debug.internal.ui.viewers.model.provisional.TreeModelViewer;
import org.eclipse.debug.internal.ui.views.DebugUIViewsMessages;
import org.eclipse.debug.internal.ui.views.variables.IndexedVariablePartition;
import org.eclipse.debug.internal.ui.views.variables.VariablesView;
import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PartInitException;
/**
* A <code>DebugPopup</code> that can be used to inspect an
* <code>IExpression</code> object.
* <p>
* This class is not intended to be subclassed.
* </p>
* <p>
* Note: This class subclasses {@link org.eclipse.jface.dialogs.PopupDialog}
* which is currently marked as experimental API. Users should therefore consider
* this class to be experimental as well.
* </p>
* @since 3.2
*/
public class InspectPopupDialog extends DebugPopup {
private static final int[] DEFAULT_SASH_WEIGHTS = new int[] { 90, 10 };
private static final int MIN_WIDTH = 250;
private static final int MIN_HEIGHT = 200;
private TreeModelViewer fViewer;
private IDebugModelPresentation fModelPresentation;
private StyledText fValueDisplay;
private SashForm fSashForm;
private Tree fTree;
private IExpression fExpression;
/**
* Creates a new inspect popup.
*
* @param shell The parent shell
* @param anchor point at which to anchor the popup in Display coordinates
* @param commandId The command id to be used for persistence of
* the dialog (possibly <code>null</code>)
* @param expression The expression being inspected
*/
public InspectPopupDialog(Shell shell, Point anchor, String commandId, IExpression expression) {
super(shell, anchor, commandId);
fExpression = expression;
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.DebugPopup#createDialogArea(org.eclipse.swt.widgets.Composite)
*/
protected Control createDialogArea(Composite parent) {
Composite composite = new Composite(parent, parent.getStyle());
GridLayout layout = new GridLayout();
composite.setLayout(layout);
composite.setLayoutData(new GridData(GridData.FILL_BOTH));
fSashForm = new SashForm(composite, parent.getStyle());
fSashForm.setOrientation(SWT.VERTICAL);
fSashForm.setLayoutData(new GridData(GridData.FILL_BOTH));
VariablesView view = getViewToEmulate();
IPresentationContext context;
if (view == null) {
context = new PresentationContext(IDebugUIConstants.ID_VARIABLE_VIEW);
} else {
context = ((TreeModelViewer)view.getViewer()).getPresentationContext();
}
fViewer = new TreeModelViewer(fSashForm, SWT.NO_TRIM | SWT.VIRTUAL, context);
fModelPresentation = new VariablesViewModelPresentation();
fValueDisplay = new StyledText(fSashForm, SWT.NO_TRIM | SWT.WRAP | SWT.V_SCROLL);
fValueDisplay.setEditable(false);
fTree = fViewer.getTree();
fTree.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
try {
TreeItem[] selections = fTree.getSelection();
if (selections.length > 0) {
Object data = selections[selections.length - 1].getData();
IValue val = null;
if (data instanceof IndexedVariablePartition) {
// no details for partitions
return;
}
if (data instanceof IVariable) {
val = ((IVariable) data).getValue();
} else if (data instanceof IExpression) {
val = ((IExpression) data).getValue();
}
if (val == null) {
return;
}
updateValueDisplay(val);
}
} catch (DebugException ex) {
DebugUIPlugin.log(ex);
}
}
public void widgetDefaultSelected(SelectionEvent e) {
}
});
// sashForm.setWeights(getInitialSashWeights());
fSashForm.setWeights(DEFAULT_SASH_WEIGHTS);
fViewer.getContentProvider();
if (view != null) {
StructuredViewer structuredViewer = (StructuredViewer) view.getViewer();
if (structuredViewer != null) {
ViewerFilter[] filters = structuredViewer.getFilters();
for (int i = 0; i < filters.length; i++) {
fViewer.addFilter(filters[i]);
}
}
}
TreeRoot treeRoot = new TreeRoot();
fViewer.setInput(treeRoot);
fViewer.expandToLevel(new TreePath(new Object[] {fExpression}), 1);
return fTree;
}
private class TreeRoot extends ElementContentProvider {
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.elements.ElementContentProvider#getChildCount(java.lang.Object, org.eclipse.debug.internal.ui.viewers.provisional.IPresentationContext)
*/
protected int getChildCount(Object element, IPresentationContext context, IProgressMonitor monitor) throws CoreException {
return 1;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.elements.ElementContentProvider#getChildren(java.lang.Object, int, int, org.eclipse.debug.internal.ui.viewers.provisional.IPresentationContext)
*/
protected Object[] getChildren(Object parent, int index, int length, IPresentationContext context, IProgressMonitor monitor) throws CoreException {
return new Object[] { fExpression };
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.elements.ElementContentProvider#supportsContextId(java.lang.String)
*/
protected boolean supportsContextId(String id) {
return true;
}
}
private void updateValueDisplay(IValue val) {
IValueDetailListener valueDetailListener = new IValueDetailListener() {
public void detailComputed(IValue value, final String result) {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
if (!fValueDisplay.isDisposed()) {
String text = result;
int max = DebugUIPlugin.getDefault().getPreferenceStore().getInt(IDebugUIConstants.PREF_MAX_DETAIL_LENGTH);
if (max > 0 && result.length() > max) {
text = result.substring(0, max) + "..."; //$NON-NLS-1$
}
fValueDisplay.setText(text);
}
}
});
}
};
fModelPresentation.computeDetail(val, valueDetailListener);
}
private VariablesView getViewToEmulate() {
IWorkbenchPage page = DebugUIPlugin.getActiveWorkbenchWindow().getActivePage();
VariablesView expressionsView = (VariablesView) page.findView(IDebugUIConstants.ID_EXPRESSION_VIEW);
if (expressionsView != null && expressionsView.isVisible()) {
return expressionsView;
}
VariablesView variablesView = (VariablesView) page.findView(IDebugUIConstants.ID_VARIABLE_VIEW);
if (variablesView != null && variablesView.isVisible()) {
return variablesView;
}
if (expressionsView != null) {
return expressionsView;
}
return variablesView;
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.DebugPopup#close()
*/
public boolean close() {
if(fModelPresentation != null) {
fModelPresentation.dispose();
}
if (!wasPersisted()) {
fExpression.dispose();
}
return super.close();
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.DebugPopup#getActionText()
*/
protected String getActionText() {
return DebugUIViewsMessages.InspectPopupDialog_0;
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.DebugPopup#persist()
*/
protected void persist() {
super.persist();
DebugPlugin.getDefault().getExpressionManager().addExpression(fExpression);
fExpression = null;
IWorkbenchPage page = DebugUIPlugin.getActiveWorkbenchWindow().getActivePage();
IViewPart part = page.findView(IDebugUIConstants.ID_EXPRESSION_VIEW);
if (part == null) {
try {
page.showView(IDebugUIConstants.ID_EXPRESSION_VIEW);
} catch (PartInitException e) {
}
} else {
page.bringToTop(part);
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.PopupDialog#getInitialSize()
*/
protected Point getInitialSize() {
Point initialSize = super.getInitialSize();
initialSize.x = Math.max(initialSize.x, MIN_WIDTH);
initialSize.y = Math.max(initialSize.y, MIN_HEIGHT);
return initialSize;
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.PopupDialog#getBackgroundColorExclusions()
*/
protected List getBackgroundColorExclusions() {
List list = super.getBackgroundColorExclusions();
list.add(fSashForm);
return list;
}
}
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