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This file is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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The source code

// $Header: /home/cvs/jakarta-jmeter/src/core/org/apache/jmeter/gui/,v 1.14 2004/03/05 13:18:38 sebb Exp $
 * Copyright 2002-2004 The Apache Software Foundation.
 * Licensed 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.jmeter.gui;
import java.util.Collection;

import javax.swing.JPopupMenu;

import org.apache.jmeter.gui.tree.JMeterTreeNode;
import org.apache.jmeter.testelement.TestElement;
 * Implementing this interface indicates that the class is a JMeter GUI
 * Component.  A JMeter GUI Component is essentially the GUI display code
 * associated with a JMeter Test Element.  The writer of the component must
 * take care to make the component be consistent with the rest of JMeter's
 * GUI look and feel and behavior.  Use of the provided abstract classes is
 * highly recommended to make this task easier.
 * @see AbstractJMeterGuiComponent
 * @see org.apache.jmeter.config.gui.AbstractConfigGui
 * @see org.apache.jmeter.assertions.gui.AbstractAssertionGui
 * @see org.apache.jmeter.control.gui.AbstractControllerGui
 * @see org.apache.jmeter.timers.gui.AbstractTimerGui
 * @see org.apache.jmeter.visualizers.gui.AbstractVisualizer
 * @see org.apache.jmeter.samplers.gui.AbstractSamplerGui
 * @version   $Revision: 1.14 $ on $Date: 2004/03/05 13:18:38 $

public interface JMeterGUIComponent

     * Sets the name of the JMeter GUI Component.  The name
     * of the component is used in the Test Tree as the name of the
     * tree node.
     * @param name  the name of the component
    void setName(String name);

     * Gets the name of the JMeter GUI component.  The name
     * of the component is used in the Test Tree as the name of the tree node.
     * @return   the name of the component
    String getName();

     * Get the component's label.  This label is used in drop down
     * lists that give the user the option of choosing one type of
     * component in a list of many.  It should therefore be a descriptive
     * name for the end user to see.  It must be unique to the class.
     * It is also used by Help to find the appropriate location in the documentation
     * @return   GUI label for the component.
    String getStaticLabel();

     * Get the component's resource name, which getStaticLabel uses
     * to derive the component's label in the local language.
     * The resource name is fixed, and does not vary with the selected language.
     * @return the resource name
    String getLabelResource();
     * Get the component's document anchor name.
     * Used by Help to find the appropriate location in the documentation
     * @return   Document anchor (#ref) for the component.
    String getDocAnchor();

     * JMeter test components are separated into a model and a GUI
     * representation.  The model holds the data and the GUI displays it.  The
     * GUI class is responsible for knowing how to create and initialize with
     * data the model class that it knows how to display, and this method is
     * called when new test elements are created.  
     * @return  the Test Element object that the GUI component represents.
    TestElement createTestElement();
     * GUI components are responsible for populating TestElements they create
     * with the data currently held in the GUI components.  This method should 
     * overwrite whatever data is currently in the TestElement as it is called
     * after a user has filled out the form elements in the gui with new
     * information.
     * @param element the TestElement to modify
    void modifyTestElement(TestElement element);

     * Test GUI elements can be disabled, in which case
     * they do not become part of the test when run.
     * @return true if the element should be part of the test run, false
     * otherwise
    boolean isEnabled();

     * Set whether this component is enabled.
     * @param enabled true for enabled, false for disabled.
    void setEnabled(boolean enabled);

     * When a user right-clicks on the component in the test tree, or
     * selects the edit menu when the component is selected, the 
     * component will be asked to return a JPopupMenu that provides
     * all the options available to the user from this component.
     * @return   a JPopupMenu appropriate for the component.
    JPopupMenu createPopupMenu();

     * The GUI must be able to extract the data from the TestElement and update
     * all GUI fields to represent those data. This method is called to allow
     * JMeter to show the user the GUI that represents the test element's data.
     * @param element the TestElement to configure 
    void configure(TestElement element);

     * This is the list of add menu categories this gui component will be
     * available under. For instance, if this represents a Controller, then the
     * MenuFactory.CONTROLLERS category should be in the returned collection.
     * When a user right-clicks on a tree element and looks through the "add"
     * menu, which category your GUI component shows up in is determined by
     * which categories are returned by this method.  Most GUI's belong to only
     * one category, but it is possible for a component to exist in multiple
     * categories.
     * @return   a Collection of Strings, where each element is one of the
     *           constants defined in MenuFactory
     * @see org.apache.jmeter.gui.util.MenuFactory
    Collection getMenuCategories();

     * Sets the tree node which this component is associated with.
     * @param node the tree node corresponding to this component
    void setNode(JMeterTreeNode node);
     * Clear the gui and return it to initial default values.  This is
     * necessary because most gui classes are instantiated just once and
     * re-used for multiple test element objects and thus they need to be
     * cleared between use.
     * TODO: implement this in all gui classes.
    public void clear();
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