LangWizardPage.java

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.motorola.studio.android.devices.services.lang.model;

import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.ui.PlatformUI;

import com.motorola.studio.android.devices.services.DeviceServicesPlugin;
import com.motorola.studio.android.devices.services.i18n.ServicesNLS;

/**
 * Page where the user can choose the language the user wants
 * to apply to the emulator
 */
public class LangWizardPage extends WizardPage
{

    // main composite
    LocationComposite locationComposite = null;

    private String[] currentLangAndCountry = null;

    /**
     * Constructor
     */
    public LangWizardPage()
    {
        this(null);
    }

    /**
     * Constructor
     */
    public LangWizardPage(String[] currentLangAndCountry)
    {
        super("langWizardPage");
        this.currentLangAndCountry = currentLangAndCountry;
        setTitle(ServicesNLS.UI_Wizard_Page_Locale_Title);
        setDescription(ServicesNLS.UI_Wizard_Page_Locale_Description);
        setPageComplete(false);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
     */
    public void createControl(Composite parent)
    {

        // Set Help ID
        PlatformUI.getWorkbench().getHelpSystem()
                .setHelp(parent, DeviceServicesPlugin.LANG_PAGE_CONTEXT_HELP_ID);

        // Define layout
        GridLayout mainLayout = new GridLayout(1, false);
        mainLayout.marginTop = 0;
        mainLayout.marginWidth = 0;
        mainLayout.marginHeight = 0;

        if (currentLangAndCountry != null)
        {
            locationComposite =
                    new LocationComposite(parent, currentLangAndCountry[0],
                            currentLangAndCountry[1]);
        }
        else
        {
            locationComposite = new LocationComposite(parent);
        }

        locationComposite.addListener(LocationComposite.LOCATION_CHANGE, new Listener()
        {
            public void handleEvent(Event arg0)
            {
                updatePageComplete();
            }
        });

        locationComposite.setLayoutData(mainLayout);
        setControl(locationComposite);
    }

    /**
     * Check if the "Next" button can be enabled by checking if the user has filled all the fields
     */
    private void updatePageComplete()
    {
        setPageComplete(false);
        String language = Language.getIdFromName(locationComposite.getLanguage());
        String country = Country.getIdFromName(locationComposite.getCountry());
        if ((currentLangAndCountry == null)
                || (!currentLangAndCountry[0].equals(language) || !currentLangAndCountry[1]
                        .equals(country)))
        {
            setPageComplete(true);
        }
    }

    /**
     * Get the selected language
     * 
     * @return selected language name
     */
    public String getLanguage()
    {
        return locationComposite.getLanguage();
    }

    /**
     * Get the selected country
     * 
     * @return selected country name
     */
    public String getCountry()
    {
        return locationComposite.getCountry();
    }

}