content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library 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.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.gwt.client.ui;
  
  import org.opencms.gwt.client.ui.I_CmsButton.ButtonStyle;
  import org.opencms.gwt.client.ui.I_CmsButton.Size;
  
  /**
   * Abstract button class implementing common methods
   * of {@link org.opencms.gwt.client.ui.I_CmsToolbarButton}
   * for container-page tool-bar buttons.<p>
   *
   * @param <HANDLER> the handler class to use for the button type
   *
   * @since 8.0.0
   */
  public abstract class A_CmsToolbarButton<HANDLER extends I_CmsToolbarHandler> extends CmsToggleButton
  implements I_CmsToolbarButton {
  
      /** The handler instance. */
      protected HANDLER m_handler;
  
      /** The button data. */
      private I_CmsButton.ButtonData m_buttonData;
  
      /** True if this button is active. */
      private boolean m_isActive;
  
      /**
       * Constructor.<p>
       *
       * @param buttonData the button data to use
       * @param handler the container-page handler
       */
      protected A_CmsToolbarButton(I_CmsButton.ButtonData buttonData, HANDLER handler) {
  
          super();
          if (buttonData != null) {
              m_buttonData = buttonData;
              setImageClass(buttonData.getIconClass());
              setTitle(buttonData.getTitle());
          }
          setButtonStyle(ButtonStyle.FONT_ICON, null);
          setSize(Size.big);
          m_handler = handler;
      }
  
      /**
       * Returns the button data.<p>
       *
       * @return the button data
       */
      public I_CmsButton.ButtonData getButtonData() {
  
          return m_buttonData;
      }
  
      /**
       * @see org.opencms.gwt.client.ui.I_CmsToolbarButton#isActive()
       */
      public boolean isActive() {
  
          return isDown();
      }
  
      /**
       * @see org.opencms.gwt.client.ui.I_CmsToolbarButton#onToolbarClick()
       */
      public void onToolbarClick() {
  
          boolean active = isDown();
  
          if (active) {
              m_handler.deactivateCurrentButton();
              m_handler.setActiveButton(this);
              onToolbarActivate();
          } else {
              m_handler.deactivateCurrentButton();
              m_handler.activateSelection();
          }
      }
  
      /**
       * @see org.opencms.gwt.client.ui.I_CmsToolbarButton#setActive(boolean)
       */
      public void setActive(boolean active) {
  
          m_isActive = active;
          setDown(m_isActive);
  
          if (active) {
              if (m_handler.getActiveButton() != this) {
                  m_handler.deactivateCurrentButton();
              }
              m_handler.setActiveButton(this);
              onToolbarActivate();
          } else {
              onToolbarDeactivate();
              m_handler.setActiveButton(null);
          }
      }
  
      /**
       * Returns the container-page handler.<p>
       *
       * @return the container-page handler
       */
      protected HANDLER getHandler() {
  
          return m_handler;
      }
  }
  