Package de.cau.cs.kieler.klighd.ui.viewers

Class KlighdLabelWidgetEventHandler

java.lang.Object

edu.umd.cs.piccolo.event.PBasicInputEventHandler

de.cau.cs.kieler.klighd.piccolo.internal.events.KlighdBasicInputEventHandler

de.cau.cs.kieler.klighd.ui.viewers.KlighdLabelWidgetEventHandler

All Implemented Interfaces:

IKlighdInputEventHandlerEx, edu.umd.cs.piccolo.event.PInputEventListener, EventListener

public class KlighdLabelWidgetEventHandler
extends KlighdBasicInputEventHandler

A dedicated KlighdBasicInputEventHandler in charge of putting the text label widget in place and updating it.

The text label shall be as smoothly as possible integrated into the diagram meaning that there should be as little as possible additional clicks required in order to select the text (or parts of it) and copy it, for example. This however requires quite some event handling magic like duplicating SWT events.

Update: deactivated the magic code as it doesn't work properly on windows setups

Author:

chsch

Nested Class Summary

Nested classes/interfaces inherited from interface de.cau.cs.kieler.klighd.piccolo.internal.events.IKlighdInputEventHandlerEx

IKlighdInputEventHandlerEx.IKlighdInputEvent

Constructor Summary

Constructors

Constructor	Description
KlighdLabelWidgetEventHandler(PiccoloViewerUI viewer, org.eclipse.swt.custom.StyledText labelWidget)	Constructor that just calls super.

Method Summary

Modifier and Type	Method	Description
void	mouseMoved(edu.umd.cs.piccolo.event.PInputEvent event)	This method triggers the preparation of the text label widget if it's not blocked due to a text selection and the mouse moved over a text figure node, and hides the widget if the mouse moved over a non-text figure and no text selection was defined.
void	mousePressed(edu.umd.cs.piccolo.event.PInputEvent event)	This method triggers the preparation of the text label widget if the user clicked on it, regardless whether the widget is blocked due to text selection.
void	mouseReleased(edu.umd.cs.piccolo.event.PInputEvent event)

Methods inherited from class de.cau.cs.kieler.klighd.piccolo.internal.events.KlighdBasicInputEventHandler

gesture, mouseDoubleClicked, mouseHorizontalWheelRotated, mouseHovered, mouseSingleOrMultiClicked, processEvent

Methods inherited from class edu.umd.cs.piccolo.event.PBasicInputEventHandler

acceptsEvent, getEventFilter, keyboardFocusGained, keyboardFocusLost, keyPressed, keyReleased, keyTyped, mouseClicked, mouseDragged, mouseEntered, mouseExited, mouseWheelRotated, mouseWheelRotatedByBlock, paramString, setEventFilter

Methods inherited from class java.lang.Object

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

Constructor Details

KlighdLabelWidgetEventHandler

public KlighdLabelWidgetEventHandler(PiccoloViewerUI viewer,
 org.eclipse.swt.custom.StyledText labelWidget)

Constructor that just calls super.

Parameters:

viewer - the employed PiccoloViewerUI

labelWidget - the employed labelWidget

Method Details

mouseMoved

public void mouseMoved(edu.umd.cs.piccolo.event.PInputEvent event)

This method triggers the preparation of the text label widget if it's not blocked due to a text selection and the mouse moved over a text figure node, and hides the widget if the mouse moved over a non-text figure and no text selection was defined.

Overrides:

mouseMoved in class edu.umd.cs.piccolo.event.PBasicInputEventHandler

mousePressed

public void mousePressed(edu.umd.cs.piccolo.event.PInputEvent event)

This method triggers the preparation of the text label widget if the user clicked on it, regardless whether the widget is blocked due to text selection.

Overrides:

mousePressed in class edu.umd.cs.piccolo.event.PBasicInputEventHandler

mouseReleased

public void mouseReleased(edu.umd.cs.piccolo.event.PInputEvent event)

Overrides:

mouseReleased in class edu.umd.cs.piccolo.event.PBasicInputEventHandler