Bug 324717

Description Mina 2010-09-08 05:22:02 EDT

Build Identifier: Eclipse 3.6-Helios

Using content proposal in helios, giving problem if u press tab. 
Below is the error. 
For recreation snippet is provided(taken from 2 sites) after error log.
Only u need to press tab while proposal pop up is visible & then point mouse at client.
#################################ERROR LOG#############################
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00002aaadc1cafc1, pid=12936, tid=1076615488
#
# JRE version: 6.0_21-b06
# Java VM: Java HotSpot(TM) 64-Bit Server VM (17.0-b16 mixed mode linux-amd64 )
# Problematic frame:
# [B]C  [libswt-pi-gtk-3650.so+0x3bfc1] [/B] Java_org_eclipse_swt_internal_gtk_OS_GTK_1WIDGET_1WINDOW+0x0
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#



Stack: [0x00000000401bd000,0x00000000402be000],  sp=0x00000000402bae08,  free space=3f70000000000000018k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C  [libswt-pi-gtk-3650.so+0x3bfc1]  Java_org_eclipse_swt_internal_gtk_OS_GTK_1WIDGET_1WINDOW+0x0
j  org.eclipse.swt.widgets.Shell.filterProc(JJJ)J+297
J  org.eclipse.swt.widgets.Display.filterProc(JJJ)J
V  [libjvm.so+0x3e756d]
V  [libjvm.so+0x5f6f59]
V  [libjvm.so+0x3e73a5]
V  [libjvm.so+0x420904]
V  [libjvm.so+0x3fefe1]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
J  org.eclipse.swt.internal.gtk.OS.GTK_WIDGET_WINDOW(J)J
j  org.eclipse.swt.widgets.Shell.filterProc(JJJ)J+297
J  org.eclipse.swt.widgets.Display.filterProc(JJJ)J
v  ~StubRoutines::call_stub
J  org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(JZ)Z
J  org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(JZ)Z
#####################################################################


####################PROGRAM#######################################

import java.text.ParseException;

import org.eclipse.jface.bindings.keys.IKeyLookup;
import org.eclipse.jface.bindings.keys.KeyLookupFactory;
import org.eclipse.jface.bindings.keys.KeyStroke;
import org.eclipse.jface.fieldassist.ContentProposalAdapter;
import org.eclipse.jface.fieldassist.ControlDecoration;
import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
import org.eclipse.jface.fieldassist.IContentProposalListener2;
import org.eclipse.jface.fieldassist.IContentProposalProvider;
import org.eclipse.jface.fieldassist.SimpleContentProposalProvider;
import org.eclipse.jface.fieldassist.TextContentAdapter;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.ColumnViewerEditor;
import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent;
import org.eclipse.jface.viewers.ColumnViewerEditorActivationStrategy;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.FocusCellHighlighter;
import org.eclipse.jface.viewers.FocusCellOwnerDrawHighlighter;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TableViewerEditor;
import org.eclipse.jface.viewers.TableViewerFocusCellManager;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.Text;

/**
 * Shows how to attach content assist to a text cell editor.
 * 
 * @author Mario Winterer
 */
public class TestContentProposal {
	private static class Color {
		public String name;

		public Color(String name) {
			this.name = name;
		}

		public String toString() {
			return name;
		}
	}

	public static class TextCellEditorWithContentProposal extends TextCellEditor {

		private ContentProposalAdapter contentProposalAdapter;
		private boolean popupOpen = false; // true, iff popup is currently open

		public TextCellEditorWithContentProposal(Composite parent, IContentProposalProvider contentProposalProvider,
				KeyStroke keyStroke, char[] autoActivationCharacters) {
			super(parent);

			enableContentProposal(contentProposalProvider, keyStroke, autoActivationCharacters);
		}

		private void enableContentProposal(IContentProposalProvider contentProposalProvider, KeyStroke keyStroke,
				char[] autoActivationCharacters) {
			contentProposalAdapter = new ContentProposalAdapter(text, new TextContentAdapter(),
					contentProposalProvider, keyStroke, autoActivationCharacters);

			// Listen for popup open/close events to be able to handle focus events correctly
			contentProposalAdapter.addContentProposalListener(new IContentProposalListener2() {

				public void proposalPopupClosed(ContentProposalAdapter adapter) {
					popupOpen = false;
				}

				public void proposalPopupOpened(ContentProposalAdapter adapter) {
					popupOpen = true;
				}
			});
		}

		/**
		 * Return the {@link ContentProposalAdapter} of this cell editor.
		 * 
		 * @return the {@link ContentProposalAdapter}
		 */
		public ContentProposalAdapter getContentProposalAdapter() {
			return contentProposalAdapter;
		}

		protected void focusLost() {
			if (!popupOpen) {
				// Focus lost deactivates the cell editor.
				// This must not happen if focus lost was caused by activating
				// the completion proposal popup.
				super.focusLost();
			}
		}

		protected boolean dependsOnExternalFocusListener() {
			// Always return false;
			// Otherwise, the ColumnViewerEditor will install an additional focus listener
			// that cancels cell editing on focus lost, even if focus gets lost due to
			// activation of the completion proposal popup. See also bug 58777.
			return false;
		}
	}

	private static class ColorNameEditingSupport extends EditingSupport {
		private TextCellEditorWithContentProposal cellEditor;

		public ColorNameEditingSupport(TableViewer viewer) {
			super(viewer);

			IContentProposalProvider contentProposalProvider = new SimpleContentProposalProvider(new String[] { "red",
					"green", "blue" });
			cellEditor = new TextCellEditorWithContentProposal(viewer.getTable(), contentProposalProvider, null, null);
		}

		protected boolean canEdit(Object element) {
			return (element instanceof Color);
		}

		protected CellEditor getCellEditor(Object element) {
			return cellEditor;
		}

		protected Object getValue(Object element) {
			return ((Color) element).name;
		}

		protected void setValue(Object element, Object value) {
			((Color) element).name = value.toString();
			getViewer().update(element, null);
		}

	}
	public void setFocus() {
	}
	private void createDeco(Text text, String s){
		
	}

	public TestContentProposal(Shell shell) {
		
/////////////////////////////
		GridLayout layout = new GridLayout(2,false);
		shell.setLayout(layout);
		Label label = new Label(shell, SWT.NONE);
		label.setText("Please select a value:   ");
		Text text = new Text(shell, SWT.BORDER);
		createDeco(text, "Use CNTL + SPACE to see possible values");
		GridData data = new GridData(GridData.FILL_HORIZONTAL);
		text.setLayoutData(data);
		ControlDecoration deco = new ControlDecoration(text, SWT.LEFT);
		deco.setDescriptionText("Use CNTL + SPACE to see possible values");
		deco.setImage(FieldDecorationRegistry.getDefault().getFieldDecoration(FieldDecorationRegistry.DEC_INFORMATION).getImage());
		deco.setShowOnlyOnFocus(false);
		// Help the user with the possible inputs
		// "." and "#" will also activate the content proposals
		char[] autoActivationCharacters = new char[] { '.', '#' };
		KeyStroke keyStroke;
		try {
			// 
			keyStroke = KeyStroke.getInstance("Ctrl+Space");
			
			// assume that myTextControl has already been created in some way
			ContentProposalAdapter adapter = new ContentProposalAdapter(text,
					new TextContentAdapter(),
					new SimpleContentProposalProvider(new String[] {
							"ProposalOne", "ProposalTwo", "ProposalThree" }),
					null, null);
			adapter.setProposalAcceptanceStyle(ContentProposalAdapter.PROPOSAL_REPLACE);
		} catch (org.eclipse.jface.bindings.keys.ParseException e) {
			e.printStackTrace();
		}

		
		
///////////////////////////////
		final TableViewer viewer = new TableViewer(shell, SWT.BORDER | SWT.FULL_SELECTION);
		final Table table = viewer.getTable();
		table.setLinesVisible(true);
		table.setHeaderVisible(true);

		final TableViewerColumn colorColumn = new TableViewerColumn(viewer, SWT.LEFT);
		colorColumn.getColumn().setText("Color name");
		colorColumn.getColumn().setWidth(200);
		colorColumn.setLabelProvider(new ColumnLabelProvider());
		colorColumn.setEditingSupport(new ColorNameEditingSupport(viewer));

		viewer.setContentProvider(new ArrayContentProvider());

		ColumnViewerEditorActivationStrategy activationSupport = new ColumnViewerEditorActivationStrategy(viewer) {
			protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
				return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL
						|| event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION
						|| event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC
						|| (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED && event.keyCode == KeyLookupFactory
								.getDefault().formalKeyLookup(IKeyLookup.ENTER_NAME));
			}
		};
		activationSupport.setEnableEditorActivationWithKeyboard(true);

		/*
		 * Without focus highlighter, keyboard events will not be delivered to
		 * ColumnViewerEditorActivationStragety#isEditorActivationEvent(...) (see above)
		 */
		FocusCellHighlighter focusCellHighlighter = new FocusCellOwnerDrawHighlighter(viewer);
		TableViewerFocusCellManager focusCellManager = new TableViewerFocusCellManager(viewer, focusCellHighlighter);

		TableViewerEditor.create(viewer, focusCellManager, activationSupport, ColumnViewerEditor.TABBING_VERTICAL
				| ColumnViewerEditor.KEYBOARD_ACTIVATION);

		viewer.setInput(createModel());
	}

	private Color[] createModel() {
		return new Color[] { new Color("red"), new Color("green") };
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Display display = new Display();

		Shell shell = new Shell(display);
		shell.setLayout(new FillLayout());
		new TestContentProposal(shell);
		shell.open();

		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}

		display.dispose();
	}
}
######################################################################

Reproducible: Always

Steps to Reproduce:
Program is provided in detals. 
1. Run that program.
2. In text box, use ctrl+space to find suggestions. 
3. Once suggestions are available & visible then hit tab button.
4. If still doesnt get crashed, point your mouse in somewhere in display window with content proposal window opened. Apllication will get crashed.