com.jain.addon.i18N.handlers.I18NMenuBarHandler.java Source code

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Here is the source code for com.jain.addon.i18N.handlers.I18NMenuBarHandler.java

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/* 
 * Copyright 2012 Lokesh Jain.
 * 
 * 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.jain.addon.i18N.handlers;

import java.io.Serializable;
import java.util.Collection;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map.Entry;

import com.jain.addon.StringHelper;
import com.vaadin.ui.Component;
import com.vaadin.ui.MenuBar;
import com.vaadin.ui.MenuBar.MenuItem;

/**
 * <code>I18NMenuBarHandler<code> is a i18N values handler for {@link MenuBar}
 * @author Lokesh Jain
 * @since December 6, 2012
 * @version 1.1.0
 */
@SuppressWarnings("serial")
public class I18NMenuBarHandler extends I18NAbstractComponentHandler implements Serializable {
    private final HashMap<MenuItem, String> i18NItemCaptions;
    private final HashMap<MenuItem, String> i18NItemDescriptions;

    public I18NMenuBarHandler(final MenuBar component) {
        super(component);
        this.i18NItemCaptions = new HashMap<MenuItem, String>();
        this.i18NItemDescriptions = new HashMap<MenuItem, String>();
        populateI18NItemCaptions(component);
    }

    private void populateI18NItemCaptions(final MenuBar component) {
        Collection<MenuItem> items = (Collection<MenuItem>) component.getItems();
        processMenuItem(items);
    }

    private void processMenuItem(Collection<MenuItem> items) {
        if (items != null) {
            for (MenuItem itemId : items) {
                String i18NItemCaption = itemId.getText();
                i18NItemCaptions.put(itemId, i18NItemCaption);
                String i18NItemDescription = itemId.getDescription();
                i18NItemDescriptions.put(itemId, i18NItemDescription);
                processMenuItem(itemId.getChildren());
            }
        }
    }

    public void applyI18N(Component component, Locale locale) {
        super.applyI18N(component, locale);
        for (Entry<MenuItem, String> entry : i18NItemCaptions.entrySet()) {
            if (StringHelper.isNotEmptyWithTrim(entry.getValue())) {
                String value = provider.getTitle(locale, entry.getValue());
                entry.getKey().setText(value);
            }
        }

        for (Entry<MenuItem, String> entry : i18NItemDescriptions.entrySet()) {
            if (StringHelper.isNotEmptyWithTrim(entry.getValue())) {
                String value = provider.getTitle(locale, entry.getValue());
                entry.getKey().setDescription(value);
            }
        }
    }

    public String getI18NCaption(Serializable serializable) {
        String i18NItemCaption = i18NItemCaptions.get(serializable);
        if (StringHelper.isNotEmptyWithTrim(i18NItemCaption))
            return i18NItemCaption;
        return getI18NCaption();
    }
}