Bug 190610 [CommonNavigator]Editable text widget in common navigator filter dialog
see attached image, the text that shows the information about available content is editable. Open Common Navigator Select View menu > Filters go to Available Content tab type in text on bottom of dialog.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/CommonFilterSelectionDialog.java
customizationsTabFolder.setLayout(new GridLayout());
		customizationsTabFolder.setLayoutData(gd);
		customizationsTabFolder.setFont(superComposite.getFont()); 
		customizationsTabFolder.addSelectionListener(new SelectionListener() {
			public void widgetSelected(SelectionEvent e) {
				if (descriptionText != null) {
					descriptionText.setText(""); 
				}
			}
			public void widgetDefaultSelected(SelectionEvent e) {
			}
		});
	  
		customize();
	}
	private void customize() {
		ColorRegistry reg = JFaceResources.getColorRegistry();
		Color c1 = reg.get("org.eclipse.ui.workbench.ACTIVE_TAB_BG_START"), 
		  c2 = reg.get("org.eclipse.ui.workbench.ACTIVE_TAB_BG_END"); 
		customizationsTabFolder.setSelectionBackground(new Color[] {c1, c2},	new int[] {100}, true);
		customizationsTabFolder.setSelectionForeground(reg.get("org.eclipse.ui.workbench.ACTIVE_TAB_TEXT_COLOR")); 
		customizationsTabFolder.setSimple(true);
	}
	private CTabItem createTabItem(CTabFolder aTabFolder, String label,
			Composite composite, String imageKey) {
		CTabItem extensionsTabItem = new CTabItem(aTabFolder, SWT.BORDER);
		extensionsTabItem.setText(label);
 		extensionsTabItem.setControl(composite); 
 		extensionsTabItem.setImage(NavigatorPlugin.getDefault().getImage(imageKey));
 		return extensionsTabItem;