org.vishia.gral.example

Class ExampleSimpleButton

java.lang.Object

org.vishia.gral.example.ExampleSimpleButton

Direct Known Subclasses:

ExampleContextMenu

public class ExampleSimpleButton
extends java.lang.Object

This class contains a simple example with a switching button, an input text field and a output text field. When the button is pressed, the text of the input field will be read and an output will be written.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	ExampleSimpleButton.GuiElements Extra inner class (for more data structuring) for all Gui elements.

Field Summary

Fields

Modifier and Type	Field and Description
private GralUserAction	actionButton Action operation is called in the event handler of the appropriate widget.
(package private) int	ctKeyStroke1
(package private) int	ctKeyStroke2
protected ExampleSimpleButton.GuiElements	gui Instance of inner class contains the graphical elements.
protected LogMessage	log A log mechanism nice to have and necessary for GRAL built, writes firstly to the console out on built of the graphic.
static int	version Version, history and license.

Constructor Summary

Constructors

Constructor and Description
ExampleSimpleButton(java.lang.String[] args)

Method Summary

Modifier and Type	Method and Description
(package private) void	actionButton() Operation on button pressed, on the application level.
(package private) void	execute() execute routine for any other actions than the graphical actions.
(package private) void	init(java.lang.String awtOrSwt) Code snippet for initializing the GUI.
static void	main(java.lang.String[] args) The main routine.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

protected LogMessage log

A log mechanism nice to have and necessary for GRAL built, writes firstly to the console out on built of the graphic. Changeable later of the graphic runs.

version

public static final int version

Version, history and license.

• 2022-01-26 Hartmut improved a little bit
• 2011-06-00 Hartmut created

Copyright/Copyleft:
For this source the LGPL Lesser General Public License, published by the Free Software Foundation is valid. It means:

1. You can use this source without any restriction for any desired purpose.
2. You can redistribute copies of this source to everybody.
3. Every user of this source, also the user of redistribute copies with or without payment, must accept this license for further using.
4. But the LPGL is not appropriate for a whole software product, if this source is only a part of them. It means, the user must publish this part of source, but doesn't need to publish the whole source of the own product.
5. You can study and modify (improve) this source for own using or for redistribution, but you have to license the modified sources likewise under this LGPL Lesser General Public License. You mustn't delete this Copyright/Copyleft inscription in this source file.

If you intent to use this source without publishing its usage, you can get a second license subscribing a special contract with the author.

See Also:

Constant Field Values

gui

protected final ExampleSimpleButton.GuiElements gui

Instance of inner class contains the graphical elements.

ctKeyStroke1

int ctKeyStroke1

ctKeyStroke2

int ctKeyStroke2

actionButton

private final GralUserAction actionButton

Action operation is called in the event handler of the appropriate widget.

Constructor Detail

ExampleSimpleButton

ExampleSimpleButton(java.lang.String[] args)

Method Detail

init

void init(java.lang.String awtOrSwt)

Code snippet for initializing the GUI. This snippet will be executed in the graphic thread. It is an anonymous inner class.

execute

void execute()

execute routine for any other actions than the graphical actions. The application may do some things beside.

main

public static void main(java.lang.String[] args)

The main routine. It creates the factory of this class and then calls #main(String[], Factory). With that pattern a derived class may have a simple main routine too.

Parameters:

args - command line arguments.

actionButton

void actionButton()
           throws java.io.IOException

Operation on button pressed, on the application level. It uses the known references to the GralWidget. Immediately access to implementation widgets is not necessary. This operation is executed in the Graphic thread. Be carefully, do not program longer or hanging stuff such as synchronized or sleep.

Throws:

java.io.IOException