Package org.apache.wicket.ajax.markup.html

Source Code of org.apache.wicket.ajax.markup.html.AjaxLink

/*
* 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.wicket.ajax.markup.html;

import org.apache.wicket.IGenericComponent;
import org.apache.wicket.ajax.AjaxEventBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.attributes.AjaxRequestAttributes;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.html.link.AbstractLink;
import org.apache.wicket.model.IModel;

/**
* A component that allows a trigger request to be triggered via html anchor tag
*
* @since 1.2
*
* @author Igor Vaynberg (ivaynberg)
* @param <T>
*            type of model object
*
*/
public abstract class AjaxLink<T> extends AbstractLink implements IAjaxLink, IGenericComponent<T>
{
  private static final long serialVersionUID = 1L;

  /**
   * Construct.
   *
   * @param id
   */
  public AjaxLink(final String id)
  {
    this(id, null);
  }

  /**
   * Construct.
   *
   * @param id
   * @param model
   */
  public AjaxLink(final String id, final IModel<T> model)
  {
    super(id, model);
  }


  @Override
  protected void onInitialize()
  {
    super.onInitialize();
    add(newAjaxEventBehavior("click"));
  }

  /**
   * @param event
   *            the name of the default event on which this link will listen to
   * @return the ajax behavior which will be executed when the user clicks the link
   */
  protected AjaxEventBehavior newAjaxEventBehavior(String event)
  {
    return new AjaxEventBehavior(event)
    {
      private static final long serialVersionUID = 1L;

      @Override
      protected void onEvent(AjaxRequestTarget target)
      {
        onClick(target);
      }

      @Override
      protected void updateAjaxAttributes(AjaxRequestAttributes attributes)
      {
        super.updateAjaxAttributes(attributes);
        AjaxLink.this.updateAjaxAttributes(attributes);
      }
    };
  }

  protected void updateAjaxAttributes(AjaxRequestAttributes attributes)
  {
  }

  @Override
  protected void onComponentTag(ComponentTag tag)
  {
    super.onComponentTag(tag);

    if (isEnabledInHierarchy())
    {
      String tagName = tag.getName();
     
      if (tagName.equalsIgnoreCase("a") || tagName.equalsIgnoreCase("link") ||
        tagName.equalsIgnoreCase("area"))
      {
        // disable any href attr in markup
        tag.put("href", "javascript:;");
      }
      else if (tagName.equalsIgnoreCase("button"))
      {
        // WICKET-5597 prevent submit
        tag.put("type", "button");
      }
    }
    else
    {
      disableLink(tag);
    }

  }

  /**
   * Listener method invoked on the ajax request generated when the user clicks the link
   *
   * @param target
   */
  @Override
  public abstract void onClick(final AjaxRequestTarget target);

  @Override
  @SuppressWarnings("unchecked")
  public final IModel<T> getModel()
  {
    return (IModel<T>)getDefaultModel();
  }

  @Override
  public final void setModel(IModel<T> model)
  {
    setDefaultModel(model);
  }

  @Override
  @SuppressWarnings("unchecked")
  public final T getModelObject()
  {
    return (T)getDefaultModelObject();
  }

  @Override
  public final void setModelObject(T object)
  {
    setDefaultModelObject(object);
  }

}
TOP

Related Classes of org.apache.wicket.ajax.markup.html.AjaxLink

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.