[Geotools-devel] Removing themes from Viewer

[Liu Z. <ntu...@ya...>]

Hihi,

I have some problem with removing an existing theme from the viewer.
When I called Viewer.remove(Theme), the shapes in the theme are still
visible, although I can not highlight or select them. and the corresponding
ThemePanel does not update, either.
I looked throught the source code of Viewer.java, and found that when a
theme is remove, it is not removed from themeStack. Since I am not very
familiar with the codes in Viewer.java, I am not sure whether this is a bug,
or there is some other tricks. However, after I made the following changes,
the removing of themes seems to be working.

here is the changes that I made in my local copy:

cvs -q diff Viewer.java (in directory
C:\Zehua\Work\src\geotools\src\uk\ac\leeds\ccg\geotools\)
Password: Index: Viewer.java
===================================================================
RCS file:
/cvsroot/geotools/geotools/src/uk/ac/leeds/ccg/geotools/Viewer.java,v
retrieving revision 1.37
diff -c -r1.37 Viewer.java
*** Viewer.java 2001/11/23 18:51:46 1.37
--- Viewer.java 2001/12/12 06:21:10
***************
*** 325,330 ****
--- 325,334 ----
          if(visibleThemes.contains(t)){visibleThemes.removeElement(t);}
          if(staticThemes.contains(t)){
              staticThemes.removeElement(t);
+          removeHighlightPositionChangedListener(t);
+         removeSelectionPositionChangedListener(t);
+         removeSelectionRegionChangedListener(t);
+             themeStack.removeTheme(t);
              themeCount--;
              updateStaticBuffer();
          }


Regards,

Liu Zehua
Project Officer
Centre for Advanced Information Systems
Nanyang Technological University, Singapore


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