org.vishia.gral.awt

Class AwtTextField

java.lang.Object

org.vishia.gral.base.GralWidget.ImplAccess

org.vishia.gral.base.GralTextField.GraphicImplAccess

org.vishia.gral.awt.AwtTextField

All Implemented Interfaces:

GralWidgImpl_ifc

public class AwtTextField
extends GralTextField.GraphicImplAccess

Implementation of the GralTextField in awt graphics. The original TextField has a considerable border for a smart outfit. That is not proper for some applications which needs an slim and simple outfit without borders because the smart outfit properties are given outside of the textfield itself. Therefore the functionality of a text field is implemented with a simple canvas. All functions to edit the content with keyboard are implemented here in an independent way of the awt.TextField. The paint(Graphics) shows the simple outfit in a special kind.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) class	AwtTextField.TextCanvas

Field Summary

Fields

Modifier and Type	Field and Description
(package private) java.lang.StringBuilder	editBuffer
(package private) java.awt.event.HierarchyBoundsListener	hierarchyBoundsListener
(package private) java.awt.event.KeyListener	keyListener
(package private) java.awt.Label	promptSwt A possible prompt for the text field or null.
static java.lang.String	sVersion Version, history and license.
(package private) AwtTextField.TextCanvas	widgetAwt The AWT widget.
private AwtWidgetHelper	widgHelper It contains the association to the swt widget (Control) and the SwtMng and implements some methods of GralWidgImpl_ifc which are delegate from this.

Fields inherited from class org.vishia.gral.base.GralTextField.GraphicImplAccess

chgCursor, chgPrompt, posField, posPrompt

Fields inherited from class org.vishia.gral.base.GralWidget.ImplAccess

chgBitsDerived, chgColorBack, chgColorLine, chgColorText, chgEditable, chgFloat, chgFocus, chgFont, chgIntg, chgInvisible, chgObjects, chgPos, chgText, chgVisible, chgVisibleInfo, pixBounds, wdgimpl, widgg

Constructor Summary

Constructors

Constructor and Description
AwtTextField(GralTextField widgg, AwtWidgetMng mng)

Method Summary

Modifier and Type	Method and Description
GralRectangle	getPixelPositionSize()
java.lang.Object	getWidgetImplementation() Returns the implementation class of the widget.
private void	paint(java.awt.Graphics gc)
private void	processKey(int key)
void	removeWidgetImplementation() Removes the graphical widget in the graphic.
void	repaintGthread() This method should be implemented in all Widget implementations of the adapter for the underlying graphic system.
void	setBoundsPixel(int x, int y, int dx, int dy)
int	setCursorPos(int pos)
void	setEditable(boolean editable)
boolean	setFocusGThread() Sets the focus to the widget.
void	setVisibleGThread(boolean bVisible) Sets the implementation widget vible or not.

Methods inherited from class org.vishia.gral.base.GralTextField.GraphicImplAccess

borderwidth, caretPos, caretPos, isPasswordField, prompt, promptStylePosition, setTouched, user

Methods inherited from class org.vishia.gral.base.GralWidget.ImplAccess

acknChanged, actionShow, dyda, getActionChange, getChanged, gralWidgetFromImplData, setDragEnable, setDropEnable, setFocused, setTextChanged, setVisibleState, XXXfocusGained

Methods inherited from class java.lang.Object

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

Field Detail

sVersion

public static final java.lang.String sVersion

Version, history and license.

• 2015-10-30 Hartmut improved, own implementation with canvas
• 2011-10-31 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 don'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 are intent to use this sources without publishing its usage, you can get a second license subscribing a special contract with the author.

See Also:

Constant Field Values

widgetAwt

final AwtTextField.TextCanvas widgetAwt

The AWT widget. A TextField is not used because a TextField has a border which is not proper in any case. Therefore the capability of text output and edit is implemented with an own algorithm.

promptSwt

java.awt.Label promptSwt

A possible prompt for the text field or null.

widgHelper

private final AwtWidgetHelper widgHelper

It contains the association to the swt widget (Control) and the SwtMng and implements some methods of GralWidgImpl_ifc which are delegate from this.

editBuffer

java.lang.StringBuilder editBuffer

hierarchyBoundsListener

java.awt.event.HierarchyBoundsListener hierarchyBoundsListener

keyListener

java.awt.event.KeyListener keyListener

Constructor Detail

AwtTextField

public AwtTextField(GralTextField widgg,
                    AwtWidgetMng mng)

Method Detail

removeWidgetImplementation

public void removeWidgetImplementation()

Description copied from interface: GralWidgImpl_ifc

Removes the graphical widget in the graphic.

getWidgetImplementation

public java.lang.Object getWidgetImplementation()

Description copied from interface: GralWidgImpl_ifc

Returns the implementation class of the widget. If the widget has more as one implementation widgets, this method returns one of the widgets, usual the first important one respectively that widget which represents the implementation layer. A widget of the implementation layer is a SWT.control or a Component.

If more as one widget are part of the GralWidget, use the special GralWidget._wdgImpl class which should contain the references to that implementation widgets.

setFocusGThread

public boolean setFocusGThread()

Description copied from interface: GralWidgImpl_ifc

Sets the focus to the widget. See GralMng_ifc#setFocus(GralWidget).

Returns:

true if it has the focus after this operation. false on any error.

setVisibleGThread

public void setVisibleGThread(boolean bVisible)

Sets the implementation widget vible or not.

Parameters:

bVisible - true then the widget should be visible, false it is set to invisible.

See Also:

GralWidgImpl_ifc.setVisibleGThread(boolean)

setCursorPos

public int setCursorPos(int pos)

setBoundsPixel

public void setBoundsPixel(int x,
                           int y,
                           int dx,
                           int dy)

setEditable

public void setEditable(boolean editable)

repaintGthread

public void repaintGthread()

Description copied from interface: GralWidgImpl_ifc

This method should be implemented in all Widget implementations of the adapter for the underlying graphic system.
Implementation hints: In SWT it should call redraw().
It is possible that the widget consists of more as one graphical widget, then all of it should be redrawn. It is possible that some data are set in another thread, they should be applied to the widgets firstly. It is possible that the widget is removed though a repaintGthread-order is pending from the time before deleting, for example if the graphic layout is changed.

See #repaintRequ

getPixelPositionSize

public GralRectangle getPixelPositionSize()

processKey

private void processKey(int key)

paint

private void paint(java.awt.Graphics gc)