com.jaspersoft.studio.swt.widgets.WLocale.java Source code

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Here is the source code for com.jaspersoft.studio.swt.widgets.WLocale.java

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/*******************************************************************************
 * Copyright (C) 2005 - 2014 TIBCO Software Inc. All rights reserved. http://www.jaspersoft.com.
 * 
 * Unless you have purchased a commercial license agreement from Jaspersoft, the following license terms apply:
 * 
 * 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
 ******************************************************************************/
package com.jaspersoft.studio.swt.widgets;

import java.util.Arrays;
import java.util.Locale;

import org.apache.commons.lang.LocaleUtils;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;

import com.jaspersoft.studio.utils.Misc;

public class WLocale extends Composite {
    private Combo combo;
    public static Locale[] locales;
    public static String[] strLocales;

    public WLocale(Composite parent, int style) {
        super(parent, SWT.NONE);
        combo = new Combo(this, style);
        combo.setItems(getLocales());
        GridLayout layout = new GridLayout();
        layout.marginWidth = 0;
        layout.marginHeight = 0;
        setLayout(layout);
        combo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    }

    @Override
    public void setToolTipText(String string) {
        super.setToolTipText(string);
        combo.setToolTipText(string);
    }

    public void addModifyListener(ModifyListener m) {
        combo.addModifyListener(m);
    }

    public void removeModifyListener(ModifyListener m) {
        combo.removeModifyListener(m);
    }

    public void addSelectionListener(SelectionListener m) {
        combo.addSelectionListener(m);
    }

    public void removeSelectionListener(SelectionListener m) {
        combo.removeSelectionListener(m);
    }

    public Combo getCombo() {
        return combo;
    }

    public static String[] getLocales() {
        if (locales == null) {
            locales = Locale.getAvailableLocales();
            strLocales = new String[locales.length];
            for (int i = 0; i < strLocales.length; i++)
                strLocales[i] = locales[i].getDisplayName();
            Arrays.sort(strLocales);
        }
        return strLocales;
    }

    public void setSelection(Locale locale) {
        int index;
        if (locale == null)
            index = getIndexFromLocale(Locale.getDefault());
        else
            index = getIndexFromLocale(locale);
        combo.select(index);
        if (index < 0 && locale != null)
            combo.setText(locale.toString());
    }

    public Locale getLocale() {
        int selectionIndex = combo.getSelectionIndex();
        if (selectionIndex < 0) {
            if (Misc.isNullOrEmpty(combo.getText()))
                return Locale.getDefault();
            return LocaleUtils.toLocale(combo.getText());
        } else {
            String strLocale = strLocales[combo.getSelectionIndex()];
            for (int i = 0; i < locales.length; i++) {
                if (locales[i].getDisplayName().equals(strLocale))
                    return locales[i];
            }
            return Locale.getDefault();
        }
    }

    /**
     * This returns the list index for a given locale.
     * 
     * @param locale
     * @return int index
     */
    private int getIndexFromLocale(Locale locale) {
        int returnedIndex = -1;
        if (locale != null) {
            for (int i = 0; i < strLocales.length; i++) {
                if (strLocales[i].equals(locale.getDisplayName()))
                    returnedIndex = i;
            }
        }
        return returnedIndex;
    }
}