Blend.J's ShortcutBar demo throws exceptions

Article ID: 1070
Last updated: 02 Feb, 2008
Article ID: 1070
Last updated: 02 Feb, 2008
Revision: 1
Views: 2571
Posted: 13 Oct, 1998
by Dean J.
Updated: 02 Feb, 2008
by Dean J.
Problem


If you run the demo
    com
    oguewaveexampleslendshortcutbarv2_0index.html

and do the following:

  1. Click on Outlook and then Other.
  2. Click on both items (Florence and Salisbury)

you will get the following exceptions:

Exception occurred during event dispatching:
java.lang.ArrayIndexOutOfBoundsException: -1 < 0
at java.lang.Throwable.(Compiled Code)
at java.util.Vector.elementAt(Compiled Code)
at com.roguewave.blend.shortcutbar.v2_0.ShortcutBarGroup.getAssociatedPanel(Compiled Code)
at com.roguewave.blend.shortcutbar.v2_0.ShortcutBar.itemStateChanged(Compiled Code)
at com.roguewave.blend.listbox.v2_0.ListBox.processItemEvent(Compiled Code)
at com.roguewave.blend.listbox.v2_0.ListBox.deselectAll(Compiled Code)
at com.roguewave.blend.listbox.v2_0.ListBox.mouseDown(Compiled Code)
at com.roguewave.blend.listbox.v2_0.ListBox.processEvent(Compiled Code)
at java.awt.Component.dispatchEventImpl(Compiled Code)
at java.awt.Container.dispatchEventImpl(Compiled Code)
at java.awt.EventDispatchThread.run(Compiled Code)



Cause


The index return value wasn't being checked for valid values.


Action


Add this line:

    if (index<0) return null;

to line 76 of com oguewavelendshortcutbarv2_0ShortcutBarGroup.java and recompile the file.

The entire method should look like this:

	/**
* This will basically take the item chosen from the component, get its
* index within the component, and then pass the same indexed panel from
* m_vPanels (again, defeating having to use HashTables ;))
*/
protected Panel getAssociatedPanel() {
int index = ((IShortcutBar)m_cpList).getSelectedIndex();
if (index<0) return null; //added to validate the index
Panel p = (Panel)m_vPanels.elementAt(index);
return p;
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Article ID: 1070
Last updated: 02 Feb, 2008
Revision: 1
Views: 2571
Posted: 13 Oct, 1998 by Dean J.
Updated: 02 Feb, 2008 by Dean J.

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