### Eclipse Workspace Patch 1.0
#P org.eclipse.ui.workbench
Index: Eclipse UI/org/eclipse/ui/internal/WorkbenchMessages.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/WorkbenchMessages.java,v
retrieving revision 1.106
diff -u -r1.106 WorkbenchMessages.java
--- Eclipse UI/org/eclipse/ui/internal/WorkbenchMessages.java	14 May 2008 17:11:06 -0000	1.106
+++ Eclipse UI/org/eclipse/ui/internal/WorkbenchMessages.java	8 Dec 2008 16:28:33 -0000
@@ -443,6 +443,9 @@
 
 	public static String FileExtension_extensionEmptyMessage;
 	public static String FileExtension_fileNameInvalidMessage;
+	public static String FilteredPreferenceDialog_Key_Scrolling;
+
+
 	public static String FilteredPreferenceDialog_PreferenceSaveFailed;
 	public static String FilteredPreferenceDialog_Resize;
 	
Index: Eclipse UI/org/eclipse/ui/internal/messages.properties
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/messages.properties,v
retrieving revision 1.383
diff -u -r1.383 messages.properties
--- Eclipse UI/org/eclipse/ui/internal/messages.properties	30 May 2008 17:10:15 -0000	1.383
+++ Eclipse UI/org/eclipse/ui/internal/messages.properties	8 Dec 2008 16:28:33 -0000
@@ -407,6 +407,7 @@
 
 FileExtension_extensionEmptyMessage = The file extension cannot be empty
 FileExtension_fileNameInvalidMessage = The file name cannot include the wild card character (*) in the current location
+FilteredPreferenceDialog_Key_Scrolling=Key &Scrolling
 FilteredPreferenceDialog_PreferenceSaveFailed=Preferences save failed.
 FilteredPreferenceDialog_Resize = &Resize tree
 
Index: Eclipse UI/org/eclipse/ui/internal/dialogs/FilteredPreferenceDialog.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/dialogs/FilteredPreferenceDialog.java,v
retrieving revision 1.88
diff -u -r1.88 FilteredPreferenceDialog.java
--- Eclipse UI/org/eclipse/ui/internal/dialogs/FilteredPreferenceDialog.java	9 May 2008 14:13:11 -0000	1.88
+++ Eclipse UI/org/eclipse/ui/internal/dialogs/FilteredPreferenceDialog.java	8 Dec 2008 16:28:33 -0000
@@ -37,6 +37,9 @@
 import org.eclipse.jface.viewers.ViewerFilter;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.ScrolledComposite;
+import org.eclipse.swt.events.DisposeEvent;
+import org.eclipse.swt.events.DisposeListener;
 import org.eclipse.swt.events.FocusAdapter;
 import org.eclipse.swt.events.FocusEvent;
 import org.eclipse.swt.graphics.Font;
@@ -46,6 +49,9 @@
 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.Event;
+import org.eclipse.swt.widgets.Listener;
 import org.eclipse.swt.widgets.Menu;
 import org.eclipse.swt.widgets.Sash;
 import org.eclipse.swt.widgets.Shell;
@@ -78,6 +84,16 @@
 public abstract class FilteredPreferenceDialog extends PreferenceDialog
 		implements IWorkbenchPreferenceContainer {
 
+	/**
+	 * 
+	 */
+	private static final int PAGE_MULTIPLIER = 9;
+
+	/**
+	 * 
+	 */
+	private static final int INCREMENT = 10;
+
 	protected class PreferenceFilteredTree extends FilteredTree {
 		/**
 		 * An (optional) additional filter on the TreeViewer.
@@ -539,6 +555,25 @@
 						return WorkbenchMessages.FilteredPreferenceDialog_Resize;
 					}
 				});
+				manager.add(new Action() {
+					/*
+					 * (non-Javadoc)
+					 * 
+					 * @see org.eclipse.jface.action.Action#run()
+					 */
+					public void run() {
+						activeKeyScrolling();
+					}
+
+					/*
+					 * (non-Javadoc)
+					 * 
+					 * @see org.eclipse.jface.action.Action#getText()
+					 */
+					public String getText() {
+						return WorkbenchMessages.FilteredPreferenceDialog_Key_Scrolling;
+					}
+				});
 				Menu menu = manager.createContextMenu(getShell());
 				Rectangle bounds = historyManager.getControl().getBounds();
 				Point topLeft = new Point(bounds.x + bounds.width, bounds.y + bounds.height);
@@ -560,6 +595,81 @@
 
 		return historyManager.getControl();
 	}
+	
+	private boolean keyScrollingEnabled = false;
+	private Listener keyScrollingFilter = null;
+
+	void activeKeyScrolling() {
+		if (keyScrollingFilter == null) {
+			Composite pageParent = getPageContainer().getParent();
+			if (!(pageParent instanceof ScrolledComposite)) {
+				return;
+			}
+			final ScrolledComposite sc = (ScrolledComposite) pageParent;
+			keyScrollingFilter = new Listener() {
+				public void handleEvent(Event event) {
+					if (!keyScrollingEnabled) {
+						return;
+					}
+					switch (event.keyCode) {
+					case SWT.ARROW_DOWN:
+						sc.setOrigin(sc.getOrigin().x, sc.getOrigin().y
+								+ INCREMENT);
+						break;
+					case SWT.ARROW_UP:
+						sc.setOrigin(sc.getOrigin().x, sc.getOrigin().y
+								- INCREMENT);
+						break;
+					case SWT.ARROW_LEFT:
+						sc.setOrigin(sc.getOrigin().x - INCREMENT, sc
+								.getOrigin().y);
+						break;
+					case SWT.ARROW_RIGHT:
+						sc.setOrigin(sc.getOrigin().x + INCREMENT, sc
+								.getOrigin().y);
+						break;
+					case SWT.PAGE_DOWN:
+						sc.setOrigin(sc.getOrigin().x, sc.getOrigin().y
+								+ PAGE_MULTIPLIER * INCREMENT);
+						break;
+					case SWT.PAGE_UP:
+						sc.setOrigin(sc.getOrigin().x, sc.getOrigin().y
+								- PAGE_MULTIPLIER * INCREMENT);
+						break;
+					case SWT.HOME:
+						sc.setOrigin(0, 0);
+						break;
+					case SWT.END:
+						sc.setOrigin(0, sc.getSize().y);
+						break;
+					default:
+						keyScrollingEnabled = false;
+					}
+					event.type = SWT.None;
+					event.doit = false;
+				}
+			};
+			Display display = PlatformUI.getWorkbench().getDisplay();
+			display.addFilter(SWT.KeyDown, keyScrollingFilter);
+			display.addFilter(SWT.Traverse, keyScrollingFilter);
+			sc.addDisposeListener(new DisposeListener() {
+
+				public void widgetDisposed(DisposeEvent e) {
+					removeKeyScrolling();
+				} });
+		}
+		keyScrollingEnabled = true;
+	}
+	
+	void removeKeyScrolling() {
+		if (keyScrollingFilter != null) {
+			keyScrollingEnabled = false;
+			Display display = PlatformUI.getWorkbench().getDisplay();
+			display.removeFilter(SWT.KeyDown, keyScrollingFilter);
+			display.removeFilter(SWT.Traverse, keyScrollingFilter);
+			keyScrollingFilter = null;
+		}
+	}
 
 	/*
 	 * (non-Javadoc)
@@ -588,6 +698,7 @@
 			showViewHandler.getHandler().dispose();
 			showViewHandler = null;
 		}
+		removeKeyScrolling();
 		history.dispose();
 		return super.close();
 	}