LuniferaPreferencePage.java

/*******************************************************************************
 * Copyright (c) 2011, 2012 Cristiano Gavião (Brazil), Loetz KG (Heidelberg).
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Cristiano Gavião - initial API and implementation
 *******************************************************************************/
package org.lunifera.dsl.eclipse.ui.preferences;

import org.eclipse.jface.preference.BooleanFieldEditor;
import org.eclipse.jface.preference.DirectoryFieldEditor;
import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.preference.RadioGroupFieldEditor;
import org.eclipse.jface.preference.StringFieldEditor;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.lunifera.dsl.eclipse.ui.LuniferaUiActivator;

/**
 * This class represents a preference page that
 * is contributed to the Preferences dialog. By 
 * subclassing <samp>FieldEditorPreferencePage</samp>, we
 * can use the field support built into JFace that allows
 * us to create a page that is small and knows how to 
 * save, restore and apply itself.
 * <p>
 * This page is used to modify preferences only. They
 * are stored in the preference store that belongs to
 * the main plug-in class. That way, preferences can
 * be accessed directly via the preference store.
 */

public class LuniferaPreferencePage
	extends FieldEditorPreferencePage
	implements IWorkbenchPreferencePage {

	public LuniferaPreferencePage() {
		super(GRID);
		setPreferenceStore(LuniferaUiActivator.getInstance().getPreferenceStore());
		setDescription("A demonstration of a preference page implementation");
	}
	
	/**
	 * Creates the field editors. Field editors are abstractions of
	 * the common GUI blocks needed to manipulate various types
	 * of preferences. Each field editor knows how to save and
	 * restore itself.
	 */
	public void createFieldEditors() {
		addField(new DirectoryFieldEditor(PreferenceConstants.P_PATH, 
				"&Directory preference:", getFieldEditorParent()));
		addField(
			new BooleanFieldEditor(
				PreferenceConstants.P_BOOLEAN,
				"&An example of a boolean preference",
				getFieldEditorParent()));

		addField(new RadioGroupFieldEditor(
				PreferenceConstants.P_CHOICE,
			"An example of a multiple-choice preference",
			1,
			new String[][] { { "&Choice 1", "choice1" }, {
				"C&hoice 2", "choice2" }
		}, getFieldEditorParent()));
		addField(
			new StringFieldEditor(PreferenceConstants.P_STRING, "A &text preference:", getFieldEditorParent()));
	}

	/* (non-Javadoc)
	 * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
	 */
	public void init(IWorkbench workbench) {
	}
	
}