tobago-extension/tobago-security/src/main/java/org/apache/myfaces/tobago/security/UISecuredButton.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.myfaces.tobago.security;

import org.apache.myfaces.tobago.component.UIButton;

import javax.el.MethodExpression;
import javax.faces.context.FacesContext;

public class UISecuredButton extends UIButton {

  public static final String COMPONENT_TYPE = "org.apache.myfaces.tobago.SecuredButton";

  /**
   * No-arg constructor used during restoreState
   */
  public UISecuredButton() {
  }

  @Override
  public boolean isDisabled() {
    if (getActionExpression() instanceof CheckAuthorisationMethodExpression) {
      return !((CheckAuthorisationMethodExpression)
          getActionExpression()).isAuthorized(FacesContext.getCurrentInstance())
          || super.isDisabled();
    }
    return super.isDisabled();
  }

  @Override
  public void setActionExpression(final MethodExpression actionExpression) {
    if (actionExpression != null) {
      super.setActionExpression(new CheckAuthorisationMethodExpression(actionExpression));
    } else {
      super.setActionExpression(actionExpression);
    }
  }
}