widgettest.java

java高级使用教程 全书一共分六章

// WidgetTest - test routine for the ACME widgets
//
// Copyright (C) 1996 by Jef Poskanzer <[e-mail]>.  All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//
// Visit the ACME Labs Java page for up-to-date versions of this and other
// fine Java utilities: http://www.acme.com/java/

package Acme.Widgets;

import java.awt.*;

/// Test routine for the ACME widgets.
// <P>
// <A HREF="/resources/classes/Acme/Widgets/WidgetTest.java">Fetch the software.</A><BR>
// <A HREF="/resources/classes/Acme.tar.gz">Fetch the entire Acme package.</A>

public class WidgetTest extends Frame
    {

    public static void main( String[] args )
	{
	new WidgetTest();
	}

    /// Constructor.
    public WidgetTest()
	{
	Panel panel;
	BorderPanel borderPanel;

	setTitle( "WidgetTest" );

	GridBagLayout gb = new GridBagLayout();
	setLayout( gb );
	GridBagConstraints gbc = new GridBagConstraints();
	gbc.gridwidth = GridBagConstraints.REMAINDER;
	gbc.insets = new Insets( 5, 5, 5, 5 );

	panel = new Panel();
	panel.setLayout( new FlowLayout( FlowLayout.LEFT ) );
	panel.add( new ImageLabel( Acme.GuiUtils.noticeIcon( this ) ) );
	panel.add( new Slider( 0, 100 ) );
	gb.setConstraints( panel, gbc );
	add( panel );

	panel = new Panel();
	panel.setLayout( new FlowLayout( FlowLayout.LEFT ) );

	borderPanel = new BorderPanel( BorderPanel.SOLID );
	borderPanel.add( new Label( "Solid" ) );
	panel.add( borderPanel );

	borderPanel = new BorderPanel( BorderPanel.RAISED );
	borderPanel.add( new Label( "Raised" ) );
	panel.add( borderPanel );

	borderPanel = new BorderPanel( BorderPanel.LOWERED );
	borderPanel.add( new Label( "Lowered" ) );
	panel.add( borderPanel );

	borderPanel = new BorderPanel( BorderPanel.IN );
	borderPanel.add( new Label( "In" ) );
	panel.add( borderPanel );

	borderPanel = new BorderPanel( BorderPanel.OUT );
	borderPanel.add( new Label( "Out" ) );
	panel.add( borderPanel );

	gb.setConstraints( panel, gbc );
	add( panel );

	borderPanel = new BorderPanel( BorderPanel.LOWERED, 1 );
	borderPanel.setLayout( new BorderLayout() );
	borderPanel.add( "Center", new Spacer( 300, 1 ) );
	gb.setConstraints( borderPanel, gbc );
	add( borderPanel );

	panel = new Panel();
	panel.setLayout( new FlowLayout( FlowLayout.LEFT ) );
	panel.add( new Button( "Busy" ) );
	panel.add( new Button( "Notice" ) );
	panel.add( new Button( "Warning" ) );
	panel.add( new Button( "Error" ) );
	panel.add( new Button( "YesNo" ) );
	panel.add( new Button( "YesNoCancel" ) );
	panel.add( new Button( "OkCancel" ) );
	gb.setConstraints( panel, gbc );
	add( panel );

	Button button = new Button( "Quit" );
	gb.setConstraints( button, gbc );
	add( button );

	pack();
	validate();
	show();
	}
    
    /// Event handler.
    public boolean handleEvent( Event evt )
	{
	switch ( evt.id )
	    {
	    case Event.ACTION_EVENT:
	    if ( evt.arg.equals( "Busy" ) )
		{
		BusyBox b = new BusyBox( this, "Sample BusyBox" );
		System.err.println( "BusyBox created." );
		b.show();
		System.err.println( "BusyBox shown." );
		try
		    {
		    Thread.sleep( 2000 );
		    }
		catch ( InterruptedException ignore ) {}
		b.done();
		System.err.println( "BusyBox done." );
		return true;
		}
	    else if ( evt.arg.equals( "Notice" ) )
		{
		NoticeBox n = new NoticeBox( this, "Sample NoticeBox" );
		System.err.println( "NoticeBox created." );
		n.show();
		System.err.println( "NoticeBox shown." );
		return true;
		}
	    else if ( evt.arg.equals( "Warning" ) )
		{
		WarningBox w =
		    new WarningBox( this, "Sample WarningBox" );
		System.err.println( "WarningBox created." );
		w.show();
		System.err.println( "WarningBox shown." );
		return true;
		}
	    else if ( evt.arg.equals( "Error" ) )
		{
		ErrorBox e = new ErrorBox( this, "Sample ErrorBox" );
		System.err.println( "ErrorBox created." );
		e.show();
		System.err.println( "ErrorBox shown." );
		return true;
		}
	    else if ( evt.arg.equals( "YesNo" ) )
		{
		YesNoBox yn = new YesNoBox( this, "Sample YesNoBox" );
		System.err.println( "YesNoBox created." );
		yn.show();
		System.err.println( "YesNoBox shown." );
		System.err.println(
		    "Answer is " + WidgetUtils.enumToString( yn.getAnswer() ) );
		return true;
		}
	    else if ( evt.arg.equals( "YesNoCancel" ) )
		{
		YesNoCancelBox ync =
		    new YesNoCancelBox( this, "Sample YesNoCancelBox" );
		System.err.println( "YesNoCancelBox created." );
		ync.show();
		System.err.println( "YesNoCancelBox shown." );
		System.err.println(
		    "Answer is " + WidgetUtils.enumToString(ync.getAnswer()) );
		return true;
		}
	    else if ( evt.arg.equals( "OkCancel" ) )
		{
		OkCancelBox oc = new OkCancelBox( this, "Sample OkCancelBox" );
		System.err.println( "OkCancelBox created." );
		oc.show();
		System.err.println( "OkCancelBox shown." );
		System.err.println(
		    "Answer is " + WidgetUtils.enumToString( oc.getAnswer() ) );
		return true;
		}
	    else if ( evt.arg.equals( "Quit" ) )
		System.exit( 0 );
	    break;
	    }
	return super.handleEvent( evt );
	}

    }