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TreeViewer Label Provider [message #465282]

Wed, 28 March 2007 08:42

Swetha

Messages: 68
Registered: July 2009

Member

Hi All,

I have Experiment domain object in which dateTime is one of the
fields..(Corresponding table is Experiment in oracle database)..

I need to develop a tree Viewer in which the first level node is the
Experiment domain object but the label to be represented is only Year of
dateTime, so in label provider class I can return only year...

When I click on the year say 2007, as a child nodes again experiment
domain object but the content is only month in the second level of tree
and agin for the third level same experiment domain but the label is only
day....

How can I manage this in label provider and content provider..

Pls give me the links for the snippets of this type...

Thanks,
Swetha

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Re: TreeViewer Label Provider [message #465284 is a reply to message #465282]

Wed, 28 March 2007 08:56

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Hi,

What is your problem:
1. You don't know how to model/design your system
2. You don't know how to use LabelProviders?

For 2. I have an answer:
http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.jface.s nippets/Eclipse%20JFace%20Snippets/org/eclipse/jface/snippet s/viewers/

Tom

Swetha schrieb:
> Hi All,
>
> I have Experiment domain object in which dateTime is one of the
> fields..(Corresponding table is Experiment in oracle database)..
>
> I need to develop a tree Viewer in which the first level node is the
> Experiment domain object but the label to be represented is only Year of
> dateTime, so in label provider class I can return only year...
>
> When I click on the year say 2007, as a child nodes again experiment
> domain object but the content is only month in the second level of tree
> and agin for the third level same experiment domain but the label is
> only day....
>
> How can I manage this in label provider and content provider..
>
> Pls give me the links for the snippets of this type...
>
>
> Thanks,
> Swetha
>

--
B e s t S o l u t i o n . a t EDV Systemhaus GmbH
----------------------------------------------------
tom schindl Eclipse JFace Committer

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Re: TreeViewer Label Provider [message #465288 is a reply to message #465284]

Wed, 28 March 2007 09:13

Swetha

Messages: 68
Registered: July 2009

Member

Hi,

My problem is with the Label Provider only..

I am placing same domain object at three levels of tree...but the label
at three levels is different..
How can I manage this in LabelProvider.. in getText() method how can I
manage it as I don't have the info abt the the level of tree..

I hope u understand my problem..

Thanks,
Swetha

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Re: TreeViewer Label Provider [message #465292 is a reply to message #465288]

Wed, 28 March 2007 09:32

Eclipse User

Originally posted by: starkom.ngs.ru

getText(Object obj) - you can write wrappers for dateTime and put they i=
n =

your ContentProvider

FirstLevelDateTimeWrapper {
dateTime info =3D [setting in constructor]
....
public String toString() {
return info.getYear();
}
}

and so on...

Then your method will be getText(Object obj) {
return obj.toString();
}

On Wed, 28 Mar 2007 16:13:26 +0700, Swetha <swetha@yahoo.co.in> wrote:

> Hi,
>
> My problem is with the Label Provider only..
>
> I am placing same domain object at three levels of tree...but the =

> label at three levels is different.. How can I manage this in =

> LabelProvider.. in getText() method how can I manage it as I don't hav=
e =

> the info abt the the level of tree..
>
> I hope u understand my problem..
>
> Thanks,
> Swetha
>

-- =

Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

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Re: TreeViewer Label Provider [message #465294 is a reply to message #465288]

Wed, 28 March 2007 09:39

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Why don't the level in your model object idicating the level this object
is part of?

In LabelProvider:

private SimpleDateFormat[] levels = new SimplyDateFormat[] {
new SimplyDateFormat("yyyy"),
new SimplyDateFormat("MM"),
new SimplyDateFormat("dd")};

public String getText(Object element) {
MyModel element = (MyModel)element;

return levels[element.getLevel()].format(element.getDate());
}

Swetha schrieb:
> Hi,
>
> My problem is with the Label Provider only..
>
> I am placing same domain object at three levels of tree...but the label
> at three levels is different.. How can I manage this in LabelProvider..
> in getText() method how can I manage it as I don't have the info abt the
> the level of tree..
>
> I hope u understand my problem..
>
> Thanks,
> Swetha
>

--
B e s t S o l u t i o n . a t EDV Systemhaus GmbH
----------------------------------------------------
tom schindl Eclipse JFace Committer

Report message to a moderator

Re: TreeViewer Label Provider [message #465298 is a reply to message #465294]

Wed, 28 March 2007 10:10

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Even simpler:

In 3.2: Implement the ITreePathLabelProvider-Interface
In 3.3: Subclass the CellLabelProvider and find out which item in the
Tree you are working on by calling viewerCell.getViewerRow().getTreePath()

Tom

Tom Schindl schrieb:
> Why don't the level in your model object idicating the level this object
> is part of?
>
>
> In LabelProvider:
>
> private SimpleDateFormat[] levels = new SimplyDateFormat[] {
> new SimplyDateFormat("yyyy"),
> new SimplyDateFormat("MM"),
> new SimplyDateFormat("dd")};
>
> public String getText(Object element) {
> MyModel element = (MyModel)element;
>
> return levels[element.getLevel()].format(element.getDate());
> }
>
>
>
> Swetha schrieb:
>> Hi,
>>
>> My problem is with the Label Provider only..
>>
>> I am placing same domain object at three levels of tree...but the label
>> at three levels is different.. How can I manage this in LabelProvider..
>> in getText() method how can I manage it as I don't have the info abt the
>> the level of tree..
>>
>> I hope u understand my problem..
>>
>> Thanks,
>> Swetha
>>
>
>

--
B e s t S o l u t i o n . a t EDV Systemhaus GmbH
----------------------------------------------------
tom schindl Eclipse JFace Committer

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