/*******************************************************************************
 * Copyright (c) 2011 Gluster, Inc. <http://www.gluster.com>
 * This file is part of Gluster Management Console.
 *
 * Gluster Management Console is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *  
 * Gluster Management Console is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License
 * for more details.
 *  
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package com.gluster.storage.management.console.preferences;

import java.util.List;

import org.eclipse.jface.preference.BooleanFieldEditor;
import org.eclipse.jface.preference.ComboFieldEditor;
import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.preference.IntegerFieldEditor;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

import com.gluster.storage.management.client.ClustersClient;
import com.gluster.storage.management.console.Activator;

/**
 * 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 GlusterPreferencePage
	extends FieldEditorPreferencePage
	implements IWorkbenchPreferencePage {
	
	private List<String> clusterNames;

	public GlusterPreferencePage() {
		super(GRID);
		setPreferenceStore(Activator.getDefault().getPreferenceStore());
		setDescription("Gluster Management Console");
	}
	
	/**
	 * 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 BooleanFieldEditor(
				PreferenceConstants.P_SHOW_CLUSTER_SELECTION_DIALOG,
				"&Show Cluster Selection Dialog on Login:",
				getFieldEditorParent()));
		
		String[][] clusterNamesArr = new String[clusterNames.size()][2];
		for(int i = 0; i < clusterNames.size(); i++) {
			String clusterName = clusterNames.get(i);
			clusterNamesArr[i][0] = clusterName;
			clusterNamesArr[i][1] = clusterName;
		}

		addField(new ComboFieldEditor(PreferenceConstants.P_DEFAULT_CLUSTER_NAME, "Default &Cluster to manage:",
				clusterNamesArr, getFieldEditorParent()));
		addField(new IntegerFieldEditor(PreferenceConstants.P_DATA_SYNC_INTERVAL, "&Refresh Interval (sec):",
				getFieldEditorParent()));
	}

	/* (non-Javadoc)
	 * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
	 */
	public void init(IWorkbench workbench) {
		clusterNames = new ClustersClient().getClusterNames();
	}
}