Home » Eclipse Projects » Eclipse Platform » Disabling a menu that uses dynamic clause
| Disabling a menu that uses dynamic clause [message #333063] |
Mon, 24 November 2008 12:22  |
Eclipse User |
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Originally posted by: x_guttik.ugs.com
We have a context menu displayed in our application on right-clicking on an
object. In this context menu, some 4 or 5 menu items are displayed.
Additionally, it has a sub-menu that shows further menu items.
Our menu structure is somewhat like this:
ABC1
ABC2
ABC3
submenu1 --> sub-item-1
sub-item-2
sub-item-3
ABC4
ABC5
In this context menu, "submenu1" uses the "dynamic" clause, and the sub menu
items are contributed dynamically. On right-clicking the first time,
submenu1 is enabled, and then when the user hovers the mouse over submenu1,
it evaluates and populates the sub menu items, and keeps submenu1 enabled if
there are sub menu items to display, or disables submenu1 when there are no
sub menu items to display.
According to our application logic, sometimes there are no sub menu items to
display, but this is evaluated only when the user hovers the mouse over
submenu1, and then disables it. If the user does not hover the mouse over
submenu1, it remains enabled even if there are no sub menu items.
What we would like to do is one of the below options:
1. Disable "submenu1" when the initial context menu is displayed, if there
are no sub menu items to be displayed (not when the user hovers the mouse
over it).
2. Or keep submenu1 enabled, even if it has no sub menu items to display.
What is the best approach to get this desired behavior?
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| Re: Disabling a menu that uses dynamic clause [message #333277 is a reply to message #333255] |
Wed, 03 December 2008 08:00  |
| Eclipse User |
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Originally posted by: x_guttik.ugs.com
Hi Paul,
Please find the code herewith.
protected IContributionItem[] getContributionItems()
{
List<IContributionItem> items = new ArrayList<IContributionItem>();
try
{
XXXXLine theLine = null;
theLine = XXXXHandler.getCurrentlySelectedXXXX();
if( theLine == null )
{
return new IContributionItem[ items.size() ];
}
if( theLine.hasXXXXX() )
{
XXXXLine[] lines = theLine.listXXXXX();
for( XXXXLine element : lines )
{
Map<String,String> parms = new HashMap<String,
String>();
parms.put( XXXXHandler.XXXXXXX_ID, element.toString() );
IContributionItem i = new CommandContributionItem(
PlatformUI.getWorkbench().getActiveWorkbenchWindow(),
"XXXXXXXX",
"XXXXXXXX",
parms, null, null, null, element.toString(),
null,
null, CommandContributionItem.STYLE_PUSH );
items.add( i );
}
}
else
{
IContributionItem i = new CommandContributionItem(
PlatformUI.getWorkbench().getActiveWorkbenchWindow(),
"XXXXXXXX",
"XXXXXXXX",
null, null, null, null, "(empty)", null,
null, CommandContributionItem.STYLE_PUSH );
items.add( i );
}
}
catch (Exception e)
{
e.printStackTrace();
}
return items.toArray( new IContributionItem[items.size()] );
}
"Paul Webster" <pwebster@ca.ibm.com> wrote in message
news:gh3kji$6ai$1@build.eclipse.org...
> Prasad Guttikonda wrote:
>> Hi Paul,
>> I am able to return sub-item-1 if there are items and a text message
>> "(empty)" if nothing is there. But the problem is, I am not able to
>> disable text "(empty)". I didn't find any option to disable it.
>
> Please post the code you are using to create the "(empty)" item.
>
> PW
>
>
> --
> Paul Webster
> http://wiki.eclipse.org/Platform_Command_Framework
> http://wiki.eclipse.org/Command_Core_Expressions
> http://wiki.eclipse.org/Menu_Contributions
> http://wiki.eclipse.org/Menus_Extension_Mapping
> http://help.eclipse.org/ganymede/index.jsp?topic=/org.eclips e.platform.doc.isv/guide/workbench.htm
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| Re: Disabling a menu that uses dynamic clause [message #333299 is a reply to message #333277] |
Wed, 03 December 2008 15:43 |
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Prasad Guttikonda wrote:
> else
> {
> IContributionItem i = new CommandContributionItem(
> PlatformUI.getWorkbench().getActiveWorkbenchWindow(),
> "XXXXXXXX",
> "XXXXXXXX",
> null, null, null, null, "(empty)", null,
> null, CommandContributionItem.STYLE_PUSH );
>
> items.add( i );
>
> }
> }
If you want to use a CommandContributionItem you would need to point to
a disabled command.
You can either implement your own EmptyContributionItem (extends
ContributionItem) and in your fill(Menu,int) method do something like
org.eclipse.ui.internal.ShowInMenu.fill(Menu, int):
MenuItem item = new MenuItem(menu, SWT.NONE, index++);
item.setText("(empty)");
item.setEnabled(false);
or do a little hack:
IAction a = new Action("(empty)") {};
a.setEnabled(false);
IContributionItem item = new ActionContributionItem(a);
PW
--
Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions
http://wiki.eclipse.org/Menus_Extension_Mapping
http://help.eclipse.org/ganymede/index.jsp?topic=/org.eclips e.platform.doc.isv/guide/workbench.htm
Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions
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| Re: Disabling a menu that uses dynamic clause [message #333330 is a reply to message #333299] |
Thu, 04 December 2008 10:45 |
| Eclipse User |
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Originally posted by: x_guttik.ugs.com
Thanks! Paul.
Regards,
Prasad
"Paul Webster" <pwebster@ca.ibm.com> wrote in message
news:gh69t6$3ph$1@build.eclipse.org...
> Prasad Guttikonda wrote:
>
>> else
>> {
>> IContributionItem i = new CommandContributionItem(
>>
>> PlatformUI.getWorkbench().getActiveWorkbenchWindow(),
>> "XXXXXXXX",
>> "XXXXXXXX",
>> null, null, null, null, "(empty)", null,
>> null, CommandContributionItem.STYLE_PUSH );
>>
>> items.add( i );
>>
>> }
>> }
>
> If you want to use a CommandContributionItem you would need to point to a
> disabled command.
>
> You can either implement your own EmptyContributionItem (extends
> ContributionItem) and in your fill(Menu,int) method do something like
> org.eclipse.ui.internal.ShowInMenu.fill(Menu, int):
>
> MenuItem item = new MenuItem(menu, SWT.NONE, index++);
> item.setText("(empty)");
> item.setEnabled(false);
>
> or do a little hack:
> IAction a = new Action("(empty)") {};
> a.setEnabled(false);
> IContributionItem item = new ActionContributionItem(a);
>
> PW
>
>
>
> --
> Paul Webster
> http://wiki.eclipse.org/Platform_Command_Framework
> http://wiki.eclipse.org/Command_Core_Expressions
> http://wiki.eclipse.org/Menu_Contributions
> http://wiki.eclipse.org/Menus_Extension_Mapping
> http://help.eclipse.org/ganymede/index.jsp?topic=/org.eclips e.platform.doc.isv/guide/workbench.htm
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