com.ibm.as400.vaccess.DoubleClickAdapter Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jt400 Show documentation
The Open Source version of the IBM Toolbox for Java
The newest version!
///////////////////////////////////////////////////////////////////////////////
//                                                                             
// JTOpen (IBM Toolbox for Java - OSS version)                              
//                                                                             
// Filename: DoubleClickAdapter.java
//                                                                             
// The source code contained herein is licensed under the IBM Public License   
// Version 1.0, which has been approved by the Open Source Initiative.         
// Copyright (C) 1997-2000 International Business Machines Corporation and     
// others. All rights reserved.                                                
//                                                                             
///////////////////////////////////////////////////////////////////////////////

package com.ibm.as400.vaccess;

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.beans.PropertyVetoException;
import java.io.Serializable;



/**
The DoubleClickAdapter class is a mouse listener that
listens for double clicks.  If the object that is double
clicked has a default action, then the default action is
invoked.  If the object that is double clicked does not have
a default action, but it does have children, then it sets the
pane to display the object's children.
**/
class DoubleClickAdapter
extends MouseAdapter
implements Serializable
{
  private static final String copyright = "Copyright (C) 1997-2000 International Business Machines Corporation and others.";




    // Private data.
    private VActionContext      actionContext_;
    private VPane               pane_;



/**
Constructs an DoubleClickAdapter object.

@param  pane            The pane.
@param  actionContext   The action context.
**/
    public DoubleClickAdapter (VPane pane,
                               VActionContext actionContext)
    {
        pane_           = pane;
        actionContext_  = actionContext;
    }



/**
Processes mouse clicked events.

@param  event   The event.
**/
    public void mouseClicked (MouseEvent event)
    {
        // Is this a double click?
        if (event.getClickCount () > 1) {

            // Get the object that was double clicked, if any.
            VObject object = pane_.getObjectAt (event.getPoint ());
            if (object != null) {

                // If the object has a default action, then perform it.
                VAction defaultAction = object.getDefaultAction ();
                if (defaultAction != null)
                    defaultAction.perform (actionContext_);

                // Otherwise, if the object is a VNode, then set the
                // pane to display this object.
                else if (object instanceof VNode) {
                    try {
                        pane_.setRoot ((VNode) object);
                    }
                    catch (PropertyVetoException e) {
                        // Ignore.
                    }
                }

            }
        }
    }



}