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Add a new data to ComboViewer [message #736835]

Fri, 14 October 2011 11:23

Mikael Petterson

Messages: 158
Registered: July 2009

Senior Member

Hi,

I got a great tip here about using ComboViewer.

This is my scenario:

- I have a list of activities ( retrieved using Activity.refreshActivities() ).
I present them in the ComboViewer.
- Then a new activity is created and I get all the activities again ( Activity.refreshActivities()).

I use the following code to present them:

Activity[] activities = Activity.refreshActivities(viewName, provider);
					comboViewer.setInput(activities);
					comboViewer.refresh();

But I need to set the newly added activity as selected.

How can I do that?

br,

//mike

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Re: Add a new data to ComboViewer [message #736857 is a reply to message #736835]

Fri, 14 October 2011 11:56

Daniel KrÃ¼gler

Messages: 853
Registered: July 2009

Senior Member

On 2011-10-14 13:23, Mikael Petterson wrote:
> Hi,
>
> I got a great tip here about using ComboViewer.
>
> This is my scenario:
>
> - I have a list of activities ( retrieved using
> Activity.refreshActivities() ).
> I present them in the ComboViewer.
> - Then a new activity is created and I get all the activities again (
> Activity.refreshActivities()).
>
> I use the following code to present them:
>
> Activity[] activities = Activity.refreshActivities(viewName, provider);
> comboViewer.setInput(activities);
> comboViewer.refresh();
>
> But I need to set the newly added activity as selected.
>
> How can I do that?

Have you tried the StructuredViewer API function setSelection?

HTH & Greetings from Bremen,

Daniel Krügler

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Re: Add a new data to ComboViewer [message #739485 is a reply to message #736857]

Mon, 17 October 2011 14:24

Mikael Petterson

Messages: 158
Registered: July 2009

Senior Member

Hi,

I have now made a sort on date of my Activity using

final Comparator<Activity> DATE_ORDER = new Comparator<Activity>() {
			public int compare(Activity a1, Activity a2) {
				return a2.getDate().compareTo(a1.getDate());
			}
		};

		Collections.sort(activities, DATE_ORDER);

Then in my comboviewer I have the following:

                Activity.refreshActivities();
                Activity[] activities = Activity.getActivitiesAsArray();
               
		comboViewer = createComboViewer(shell, Activity.getActivitiesAsArray());
                comboViewer.setInput(activities);
		// if we have activity set as selected otherwise let sorter in list
		// decide which to set.new
		// StructuredSelection(comboViewer.getSelection()
		//First element in array is last created.
		comboViewer.setSelection(new StructuredSelection(activities[0]));
		comboViewer.refresh();

I use this code above in several places and it results in a duplication of activities since a refreshActivities() gives all activities.
How can I avoid this.

br,

//mike

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