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.acacia.client.widgets.code;
  
  import org.opencms.gwt.client.ui.FontOpenCms;
  import org.opencms.gwt.client.util.CmsStyleVariable;
  
  import com.google.gwt.event.dom.client.ClickEvent;
  import com.google.gwt.event.dom.client.ClickHandler;
  import com.google.gwt.event.dom.client.HasClickHandlers;
  import com.google.gwt.event.shared.HandlerRegistration;
  import com.google.gwt.user.client.ui.Composite;
  import com.google.gwt.user.client.ui.HTML;
  
  /**
   * Simple toolbar button class for the CodeMirror widget.
   */
  public class CmsCodeMirrorToolbarButton extends Composite implements HasClickHandlers {
  
      /** The root element. */
      protected HTML m_root;
  
      /** True if the button is enabled. */
      protected boolean m_enabled = true;
  
      /** Controls the style for enabled / disabled state. */
      protected CmsStyleVariable m_enabledStyle = new CmsStyleVariable(this);
  
      /**
       * Creates a new instance.
       *
       * @param icon the icon
       */
      public CmsCodeMirrorToolbarButton(FontOpenCms icon) {
  
          m_root = new HTML();
          m_root.setHTML("<span>" + icon.getCodePointEntity() + "</span>");
          initWidget(m_root);
          addStyleName("oc-codewidget-button");
      }
  
      /**
       * Creates a new instance.
       *
       * @param icon the icon text.
       */
      public CmsCodeMirrorToolbarButton(String icon) {
  
          m_root = new HTML();
          m_root.setHTML("<span>" + icon + "</span>");
          initWidget(m_root);
          addStyleName("oc-codewidget-button");
      }
  
      /**
       * @see com.google.gwt.event.dom.client.HasClickHandlers#addClickHandler(com.google.gwt.event.dom.client.ClickHandler)
       */
      public HandlerRegistration addClickHandler(ClickHandler handler) {
  
          return addDomHandler(event -> {
              if (m_enabled) {
                  handler.onClick(event);
              }
          }, ClickEvent.getType());
      }
  
      /**
       * Enables / disables the button.
       *
       * @param enabled true if the button should be enabled
       */
      public void setEnabled(boolean enabled) {
  
          m_enabled = enabled;
          m_enabledStyle.setValue(enabled ? null : "oc-disabled");
      }
  
  }
  