Package org.apache.wicket.extensions.markup.html.repeater.data.table.filter

Source Code of org.apache.wicket.extensions.markup.html.repeater.data.table.filter.GoAndClearFilter

/*
* 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.extensions.markup.html.repeater.data.table.filter;

import org.apache.wicket.core.util.lang.WicketObjects;
import org.apache.wicket.markup.html.form.Button;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.ResourceModel;

/**
* Filter component that generates a 'go' and 'clear' buttons.
*
* @author Igor Vaynberg (ivaynberg)
*
*/
public class GoAndClearFilter extends GoFilter
{
  private static final long serialVersionUID = 1L;

  private static final IModel<String> DEFAULT_CLEAR_MODEL = new ResourceModel("datatable.clear",
    "clear");

  private final Button clear;

  private final Object originalState;

  /**
   * Constructor
   *
   * This constructor will use default models for the 'clear' and 'go' button labels.
   * Uses the form's model object as an original state
   *
   * @param id
   *            component id
   * @param form
   *            filter form of the filter toolbar
   */
  public GoAndClearFilter(final String id, final FilterForm<?> form)
  {
    this(id, form, DEFAULT_GO_MODEL, DEFAULT_CLEAR_MODEL);
  }

  /**
   * Constructor.
   * Uses the form's model object as an original state
   *
   * @param id
   *            component id
   * @param form
   *            filter form of the filter toolbar
   * @param goModel
   *            model for the label of the 'go' button
   * @param clearModel
   *            model for the label of the 'clear' button
   */
  public GoAndClearFilter(final String id, final FilterForm<?> form,
    final IModel<String> goModel, final IModel<String> clearModel)
  {
    this(id, goModel, clearModel, WicketObjects.cloneObject(form.getDefaultModelObject()));
  }

  /**
   * Constructor
   *
   * @param id
   *            component id
   * @param goModel
   *            model for the label of the 'go' button
   * @param clearModel
   *            model for the label of the 'clear' button
   * @param originalState
   *            the object to use as original state
   */
  public GoAndClearFilter(final String id, final IModel<String> goModel,
      final IModel<String> clearModel, Object originalState)
  {
    super(id, goModel);

    this.originalState = originalState;

    clear = new Button("clear", clearModel)
    {
      private static final long serialVersionUID = 1L;

      @Override
      public void onSubmit()
      {
        onClearSubmit(this);
      }
    };

    clear.setDefaultFormProcessing(true);

    add(clear);
  }

  /**
   * @return button component representing the clear button
   */
  protected Button getClearButton()
  {
    return clear;
  }

  /**
   * This method should be implemented by subclasses to provide behavior for the clear button.
   *
   * @param button
   *            the 'clear' button
   *
   */
  @SuppressWarnings("unchecked")
  protected void onClearSubmit(final Button button)
  {
    Form<Object> form = (Form<Object>)button.getForm();
    form.setDefaultModelObject(WicketObjects.cloneObject(originalState));
  }

}
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