Hi Brett,
I've implemented some widgets in pyjs myself, but having some
experience (I've been using pyjs for about 3 years now), I
believe the features I'd like to have in a table widget are
non-trivial to implement using pyjs ... not impossible, but
non-trivial. Here I list the most important features for me, and
widgets of 2 javascript libraries that I know of -- Qooxdoo
(Table) and GWT (PagingScrollTable) -- that have one or more of
them. I'm certain there are other javascript libraries that have
table widgets with one or more of these features:
* scrolling with fixed column headers
This is non-trivial to implement, especially if columns are
intended to be rearrangeable and resizable, as they are in
Qooxdoo's Table (see below).
* column selection/de-selection to create custom views
Qooxdoo's Table has this; PagingScrollTable doesn't
* column resizing
Qooxdoo's Table and PagingScrollTable both have this
* column sorting
Qooxdoo's Table and PagingScrollTable both have this.
I've implemented this for a subclass I made of the pyjs
Grid widget -- in my implementation, you can also define a
per-column sort key for columns that contain something that is
not sortable (e.g. a string that contains a number to be sorted
on, or a widget).
* "virtual tables" -- i.e. capability to page the contents of a
table from the server for huge tables, which vastly improves
usability.
Qooxdoo's Table has this; PagingScrollTable supposedly has it.
If anyone has implemented these features in a pyjs table widget,
or found a way to include such a widget from another library
in a pyjs application, I would be very interested to hear
about it!
Qooxdoo's Table shows all of them in this demo:
http://demo.qooxdoo.org/2.1.1/demobrowser/#table~Table_Huge.html
The qooxdoo Table is much better than PagingScrollTable
-- it has DnD rerrangeable columns and a widget on the right of
the columns that allows columns to be selected/de-selected to
create a view, in addition to support for "virtual tables" --
i.e. capability to page from the server for huge tables, which
vastly improves usability.
PagingScrollTable has some of them -- see its demo:
http://collectionofdemos.appspot.com/demo/com.google.gwt.gen2.demo.scrolltable.PagingScrollTableDemo/PagingScrollTableDemo.html
Thanks,
Steve
On 05/19/2013 03:07 PM, Apexi 200sx wrote:
Hi Steve,
Is there some specific features you need ?
Reason I say this is because once you start digging into creating your
own widgets in pyjs it turns out it is not a major issue to add features
you may require, plus you will know exactly how they work and you won;t
have to learn a possibly fairly complex API to use it.
Going the custom route may turn out to be less hassle in the long run.
Cheers
Brett
On Sun, May 19, 2013 at 8:03 PM, Steve Waterbury
<[email protected] <mailto:[email protected]>> wrote:
On 05/17/2013 08:48 PM, Steve Waterbury wrote:
Just curious ...
http://code.google.com/p/__google-web-toolkit-incubator/__wiki/PagingScrollTable
<http://code.google.com/p/google-web-toolkit-incubator/wiki/PagingScrollTable>
Steve
Crickets. :) So, continuing this conversation with myself ...
I just ran java2py.py on the PagingScrollTable.java code and it turns
out that PagingScrollTable uses generic classes, which makes java2py.py
throw up its hands ... e.g.:
------------------------------__------------------------------__----------
public class PagingScrollTable<RowType> extends AbstractScrollTable
implements
HasTableDefinition<RowType>, HasPageCountChangeHandlers,
HasPageLoadHandlers, HasPageChangeHandlers,
HasPagingFailureHandlers {
/**
* A custom {@link AbstractCellView} used by the {@link
PagingScrollTable}.
*
* @param <RowType> the type of the row values
*/
------------------------------__------------------------------__----------
Does anyone have any ideas how java generic classes might be
transposed into pyjs?
Steve
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