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UndoRedo V1.2 by Matthew Ford 2005/06/27 |
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public interface IHaveDescription
This interface indicates that the UndoableEdit has a long description that gives more information then the getPresentationName()
Method Summary | |
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void |
cancelGetDescription()
Cancels getDescription(au.com.forward.undoRedo.IDisplayText, au.com.forward.undoRedo.UndoRedoTreeNode) . |
void |
getDescription(IDisplayText textDisplay,
UndoRedoTreeNode undoRedoTreeNode)
Gets the Description of the UndoableEdit. |
Method Detail |
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void getDescription(IDisplayText textDisplay, UndoRedoTreeNode undoRedoTreeNode)
cancelGetDescription()
is called when the selection
changes and the text is no longer needed.
A possiable implementation is:-
volatile Thread loadThread = null; volatile boolean interrupted = false; public void getDescription(IDisplayText textDisplay, boolean ) { interrupted = false; textDisplay.setText("Loading description..."); final IDisplayText display = textDisplay; Thread loadThread = new Thread(new Runnable() { public void run() { if (interrupted) { // got interrupt befor we could start. // add more tests like this one to stop the thread promptly on interrupt() return; } try { // create description here checking interrupted every so often display.setText(description); } catch (Throwable t) { try { display.setText("Error getting description.\n"+t.getMessage()); } catch(Throwable tt) { // log this serious error somewhere... } } } }); loadThread.start(); } public void cancelGetDescription() { interrupted = true; if (loadThread != null) { loadThread.interrupt(); } }
void cancelGetDescription()
getDescription(au.com.forward.undoRedo.IDisplayText, au.com.forward.undoRedo.UndoRedoTreeNode)
.
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©2005, Forward Computing and Control Pty. Ltd ACN 003 669 994 NSW Australia All Rights Reserved. |
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