/*****************************************************************************
 * Copyright (c) 2010 Atos Origin.
 *
 *    
 * 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:
 *  Emilien Perico (Atos Origin) emilien.perico@atosorigin.com - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.infra.services.resourceloading.preferences;

import java.util.Map;

import org.eclipse.jface.dialogs.DialogPage;
import org.eclipse.jface.preference.RadioGroupFieldEditor;
import org.eclipse.papyrus.infra.gmfdiag.preferences.ui.AbstractGroup;
import org.eclipse.papyrus.infra.services.resourceloading.impl.ProxyManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Group;

public class LoadinStrategyGroup extends AbstractGroup {

    private static final String LABEL_LOADING_STRATEGY = "Loading strategy :";

    private static final String SELECT_LOADING_STRATEGY = "Select the loading strategy when model is opened";

    private RadioGroupFieldEditor fStrategyRadio;

    public LoadinStrategyGroup(Composite parent, String title, DialogPage dialogPage) {
        super(parent, title, dialogPage);
        createContent(parent);
    }

    public void createContent(Composite parent) {
        Group group = new Group(parent, SWT.SCROLL_PAGE);
        group.setLayout(new GridLayout());
        group.setText(SELECT_LOADING_STRATEGY);
        fStrategyRadio = createStrategyRadio(group);
        addFieldEditor(fStrategyRadio);
    }

    private static RadioGroupFieldEditor createStrategyRadio(Group group) {
        String[][] values = getValuesFromExtensionPoint();
        RadioGroupFieldEditor radio = new RadioGroupFieldEditor(ICorePreferenceConstants.PREF_CORE_DEFINE_LOADING_STRATEGY, LABEL_LOADING_STRATEGY, 1, values, group);
        return radio;
    }

    /**
     * Gets the strategies value from extension point.
     * 
     * @return the strategies value
     */
    private static String[][] getValuesFromExtensionPoint() {
        Map<Integer, String> allStrategies = ProxyManager.getAllStrategies();
        String[][] result = new String[allStrategies.size()][2];
        int i = 0;
        for(Integer val : allStrategies.keySet()) {
            result[i][0] = allStrategies.get(val);
            result[i][1] = String.valueOf(val);
            i++;
        }
        return result;
    }



}