Bug 90257 [Preferences] Want to create an instanceof of a WorkingCopyManager
20050405 I'm currently referencing the internal class org.eclipse.ui.internal.preferences.WorkingCopyManager I have a base class that manages all the current settings and I changes that class to use the working copy manager. For the following reasons I also have to function when I don't get a working copy manager. To avoid complicated code it would be nice if in these case I could just use an internal instance of the working copy manager. - In the preference page, when testing if my container is really of kind IWorkbenchPreferenceContainer (so I can access the working copy manager) I have to also handle the case that the test returns false - We have some pages that are contributed by extension point that don't give me access to the container due to API limitations.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/OptionsConfigurationBlock.java
fLabels.put(comboBox, labelControl);
		return comboBox;
	}
	
	protected Combo newComboControl(Composite composite, Key key, String[] values, String[] valueLabels) {
		ControlData data= new ControlData(key, values);
		
		Combo comboBox= new Combo(composite, SWT.READ_ONLY);
		comboBox.setItems(valueLabels);
		comboBox.setData(data);
		comboBox.addSelectionListener(getSelectionListener());
		comboBox.setFont(JFaceResources.getDialogFont());
			
		makeScrollableCompositeAware(comboBox);
		
		String currValue= getValue(key);	
		comboBox.select(data.getSelection(currValue));
		
		fComboBoxes.add(comboBox);
		return comboBox;
	}
	protected Text addTextField(Composite parent, String label, Key key, int indent, int widthHint) {	
		Label labelControl= new Label(parent, SWT.WRAP);
		labelControl.setText(label);
		labelControl.setFont(JFaceResources.getDialogFont());
		labelControl.setLayoutData(new GridData());
				
		Text textBox= new Text(parent, SWT.BORDER | SWT.SINGLE);
		textBox.setData(key);