Bug 38462 [Dialogs] Tree in Preference & Properties dialog should be resizable
I20030604 On MacOS X the native tree isn't as compact as on other platforms. As a result some of the tree items in the Preference and Properties dialogs are barely visible. Since horizontalls scrolling is cumbersome, it would be nice to have a sash between the tree and the dialog's content. Remembering the dialog's size and the sash position would be helpful, too.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
protected String getSelectedNodePreference() {
		return lastPreferenceId;
	}
	/** 
	 * @param selection the <code>ISelection</code> to examine.
	 * @return the first element, or null if empty.
	 */
	protected IPreferenceNode getSingleSelection(ISelection selection) {
		if (!selection.isEmpty())
			return (IPreferenceNode) ((IStructuredSelection) selection).getFirstElement();
		return null;
	}
	/** 
	 * @return the <code>TreeViewer</code> for this dialog.
	 * @since 3.0
	 */
	protected TreeViewer getTreeViewer() {
		return treeViewer;
	}
	/**
	 * Save the values specified in the pages.
	 * <p>
	 * The default implementation of this framework method saves all
	 * pages of type <code>PreferencePage</code> (if their store needs saving
	 * and is a <code>PreferenceStore</code>).
	 * </p>
	 * <p>
	 * Subclasses may override.
	 * </p>
	 */