[ews.eclipse.technology.rap] Re: Table with multiline columns

[Markus Wolf <markus.wolf@xxxxxxxx>]

Hi Cheney,

you could try a ContentProvider like this:

private static class MultilineContentProvider extends 
ArrayContentProvider {
	public Object[] getElements(final Object inputElement) {
		if (inputElement instanceof List<?>) {
			final List<Object> elements = new 
LinkedList<Object>();
			final List<Object> list = (List<Object>) 
inputElement;
			for (int i = 0; i < list.size(); i++) {
				final Object pos = list.get(i);
				final String[] lines = WordUtils.wrap
(pos.toString(),
						100, "\n", true).split
("\n");
				elements.add(lines[0]);
					// Other lines
				for (int j = 1; j < lines.length; j++) {
					elements.add(lines[j]);
				}
			}
			return elements.toArray();
		}
		return super.getElements(inputElement);
	}
}


The code is not tested, since I removed the application specific party of 
our application. So all places where Object is used was a business 
specific class containing the data to present, but it should be quite 
simple to adopt.
The WordUtils class is from commons-lang and wraps the content to display 
at 100 characters.

HTH
Markus


Am Thu, 17 Sep 2009 08:16:08 +0000 schrieb Cheney Chen:

> Hi Austin and Markus,
> 
> I also need a table with multiline columns, but I can't implement it.Can
> you give me some hints or some exactly simple code?
> 
> Thanks,
> Cheney
> 
> On Tue, 21 Jul 2009 07:44:50 +0000, Markus Wolf wrote:
> 
>> Hello Austin,
>> 
>> I helped myself with the problem by implementing a ContentProvider and
>> LabelProvider which splits up the long text into multiple table rows.
>> The input is wrapped by the ContentProvider and then send as model-
>> elements to the table viewer. This aproach works quite well but it is
>> not possible to have TableEditors with this. That the only drawback we
>> have.
>> 
>> But thanks for your input. :)
>> 
>> Markus
>> 
>> 
>>> There is a way to have some semblance of multi-line table rows in a
>>> TableViewer if you don't mind a bit of hacking.
>>> 
>>> I have a small experimental implementation that will interpret '\n'
>>> characters in the text that is returned from the LabelProvider.  It is
>>> limited in ability, and it is unconventional, but if you need the
>>> multi-line tables that bad you may find it helpful.
>>> 
>>> Caveats:
>>> 1. You must manually set the row height on the TableViewer. 2. The row
>>> height will be consistent for all rows. 3. The text will be left
>>> justified.
>>> 4. Overflow is cut off.
>>> 
>>> 
>>> If you are still interested I can post it.





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