org.pentaho.gwt.widgets.client.utils.ButtonHelper.java Source code

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Here is the source code for org.pentaho.gwt.widgets.client.utils.ButtonHelper.java

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/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.gwt.widgets.client.utils;

import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.VerticalPanel;

public final class ButtonHelper {

    public static enum ButtonLabelType {
        TEXT_ON_TOP, TEXT_ON_RIGHT, TEXT_ON_BOTTOM, TEXT_ON_LEFT, TEXT_ONLY, NO_TEXT
    }

    public static String createButtonLabel(Image image, String text, ButtonLabelType type) {
        return createButtonLabel(image, text, type, null);
    }

    public static Panel createButtonElement(Image image, String text, ButtonLabelType type) {
        return createButtonElement(image, text, type, null);
    }

    public static String createButtonLabel(Image img, String text, ButtonLabelType type, String cssName) {
        final HTML html = new HTML(text, false);
        if (cssName != null) {
            html.addStyleDependentName(cssName);
            img.addStyleDependentName(cssName);
        }
        if (type == ButtonLabelType.TEXT_ONLY) {
            return text;
        } else if (type == ButtonLabelType.TEXT_ON_LEFT || type == ButtonLabelType.TEXT_ON_RIGHT) {
            HorizontalPanel hpanel = new HorizontalPanel();
            if (cssName != null) {
                hpanel.addStyleName(cssName);
            }
            if (type == ButtonLabelType.TEXT_ON_LEFT) {
                hpanel.add(html);
                hpanel.add(new HTML(" ")); //$NON-NLS-1$
                hpanel.add(img);
            } else {
                hpanel.add(img);
                hpanel.add(new HTML(" ")); //$NON-NLS-1$
                hpanel.add(html);
            }
            hpanel.setCellVerticalAlignment(html, HasVerticalAlignment.ALIGN_MIDDLE);
            hpanel.setCellVerticalAlignment(img, HasVerticalAlignment.ALIGN_MIDDLE);
            return hpanel.getElement().getString();
        } else {
            VerticalPanel vpanel = new VerticalPanel();
            if (type == ButtonLabelType.TEXT_ON_TOP) {
                vpanel.add(html);
                vpanel.add(img);
            } else {
                vpanel.add(img);
                vpanel.add(html);
            }
            vpanel.setCellHorizontalAlignment(html, HasHorizontalAlignment.ALIGN_CENTER);
            vpanel.setCellHorizontalAlignment(img, HasHorizontalAlignment.ALIGN_CENTER);
            return vpanel.getElement().getString();
        }
    }

    public static Panel createButtonElement(Image img, String text, ButtonLabelType type, String cssName) {
        final HTML html = new HTML(text, false);
        if (cssName != null) {
            html.addStyleDependentName(cssName);
            img.addStyleDependentName(cssName);
        }
        if (type == ButtonLabelType.TEXT_ONLY) {
            SimplePanel sp = new SimplePanel();
            sp.add(html);
            return sp;
        } else if (type == ButtonLabelType.TEXT_ON_LEFT || type == ButtonLabelType.TEXT_ON_RIGHT) {
            HorizontalPanel hpanel = new HorizontalPanel();
            if (cssName != null) {
                hpanel.addStyleName(cssName);
            }
            if (type == ButtonLabelType.TEXT_ON_LEFT) {
                hpanel.add(html);
                hpanel.add(new HTML(" ")); //$NON-NLS-1$
                hpanel.add(img);
            } else {
                hpanel.add(img);
                hpanel.add(new HTML(" ")); //$NON-NLS-1$
                hpanel.add(html);
            }
            hpanel.setCellVerticalAlignment(html, HasVerticalAlignment.ALIGN_MIDDLE);
            hpanel.setCellVerticalAlignment(img, HasVerticalAlignment.ALIGN_MIDDLE);
            return hpanel;
        } else {
            VerticalPanel vpanel = new VerticalPanel();
            if (type == ButtonLabelType.TEXT_ON_TOP) {
                vpanel.add(html);
                vpanel.add(img);
            } else {
                vpanel.add(img);
                vpanel.add(html);
            }
            vpanel.setCellHorizontalAlignment(html, HasHorizontalAlignment.ALIGN_CENTER);
            vpanel.setCellHorizontalAlignment(img, HasHorizontalAlignment.ALIGN_CENTER);
            return vpanel;
        }
    }
}