Also, when the Grid is to be sorted after the "trickyFormat" (which I
want to do) the PropertyConduit which relies on the pages property
will not be valid, as it is not updating the _row field...
2007/2/16, Ted Steen <[EMAIL PROTECTED]>:
How could I create a synthetic property whose conduit is on the page?
if I create the PropertyConduit I need to use the MyType as rootClass,
otherwise I will get a ClassCastException, and from MyType I will not
be able to access the properties on the page.
2007/2/16, Howard Lewis Ship <[EMAIL PROTECTED]>:
> The Grid component has a row parameter, equivalent to the Loop
> components value parameter (and the same as T4's contrib:Table's row
> parameter). It is set as each row starts to render, to identify the
> object that will be rendered. This is primarily so that custom cell
> renderers will know what they are supposed to render, but you can
> twist it around a few different ways with T5's Grid.
>
> Thus you could have:
>
> private MyType _row;
>
> public void setRow(MyType row) { _row = row; }
>
> public String getThatTrickyFormat()
> {
> return _row.getThatTrickyProperty().andDoSomethingToIt();
> }
>
> You could then use the PropertyConduitSource service to create a
> synthetic property whose conduit is the page's thatTrickyFormat
> property ... or you could leave the conduit as null, and just provide
> a cell renderer block tha accesses thatTrickyFormat property.
>
> On 2/16/07, Ted Steen <[EMAIL PROTECTED]> wrote:
> > One thing I am struggling with now is cells with values calculated
> > from the current row.
> > For the most part the value of a cell is just
> > currRowObject.some.value, but sometimes one need to go by some
> > service, eg. myService.getSomeValue(currRowObject).
> >
> > I construct my own BeanModel "bm"
> > then I do
> >
> > bm.add("category", new PropertyConduit() {
> > .
> > .
> > .
> > public Object get(Object instance) {
> > EntryDTO entry = (EntryDTO)instance;
> > return entryService.getCategory(entry);
> > }
> > .
> > .
> > .
> >
}).label(messages.get("category")).order(10).editorType("categorycell").sortable(true);
> >
> > It feels a little clumsy for all my non-primitives and also, how do I
> > override how the rendering is done?
> > If I use <t:parameter name="categoryCell">...</t:parameter> I cannot
> > get the value of the cell from here (well I could invoke
> > entryService.getCategory(...) once again...but)
> > I could override toString() on all my DTOs, but that would force me to
> > also inject the messages etc. into them and that would break my
> > layered design.
> >
> > Any thoughts?
> >
> > 2007/2/15, Howard Lewis Ship <[EMAIL PROTECTED]>:
> > > Fast is nice! Glad it worked.
> > >
> > > Grid represents a number of simplifications over T4's contrib:Table.
> > > We'll see over time if any of the simplficiations is overly drastic,
> > > but I think it will do nicely. Not to insult OGNL, but removing all
> > > that OGNL/reflection/synchronization overhead makes a big difference.
> > > On my MacBook Pro, I see action requests lasting about 2ms and render
> > > requests (for complex Grid pages) lasting 25 - 35 ms (seems like the
> > > millisecond clock on Mac OS is more accurate than under Windows).
> > >
> > > This still underlies the need for more performance testing of Tapestry
> > > (4 + 5), something that typically requires a reasonable and stable
> > > lab in order to be meaningful.
> > >
> > > On 2/15/07, Ted Steen <[EMAIL PROTECTED]> wrote:
> > > > Made my changes, updated svn.
> > > > Now it works like a charm!
> > > >
> > > > And damn! that Grid component is fast!
> > > >
> > > > Thank you Howard!
> > > >
> > > >
> > > > 2007/2/15, Howard Lewis Ship <[EMAIL PROTECTED]>:
> > > > > To do this, you need to construct the BeanModel yourself, by injecting
> > > > > the BeanModelSource service.
> > > > >
> > > > > You can then add a new column, say "trashcan".
> > > > >
> > > > > model.add("trashcan", null).order(1000).label("Delete ?");
> > > > >
> > > > > You can then provide a parameter:
> > > > >
> > > > > <t:comp type="Grid" ...>
> > > > > <t:parameter name="trashcanCell">
> > > > > ...
> > > > > </t:parameter>
> > > > > </t:comp>
> > > > >
> > > > > Alas, I forgot to add that version of model.add() where you can pass
> > > > > in the PropertyConduit.
> > > > >
> > > > > So you'll have to wait for me to make a couple of changes ...
> > > > >
> > > > > On 2/15/07, Ted Steen <[EMAIL PROTECTED]> wrote:
> > > > > > Hi!
> > > > > >
> > > > > > I'm trying out the new Grid component and I am having some troubles
> > > > > > with the flexibility of the row's apperence.
> > > > > > My model is very different from the view (eg. there should be a
little
> > > > > > trashcan accociated with some of the rows in order to be able to
> > > > > > delete that row etc.)
> > > > > > Are there any plans on letting us customise our own rows? maybe a
> > > > > > parameter "row" that takes a block or similar?...
> > > > > >
> > > > > > /Ted
> > > > > >
> > > > > >
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> > > > > > To unsubscribe, e-mail: [EMAIL PROTECTED]
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> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Howard M. Lewis Ship
> > > > > TWD Consulting, Inc.
> > > > > Independent J2EE / Open-Source Java Consultant
> > > > > Creator and PMC Chair, Apache Tapestry
> > > > > Creator, Apache HiveMind
> > > > >
> > > > > Professional Tapestry training, mentoring, support
> > > > > and project work. http://howardlewisship.com
> > > > >
> > > > > ---------------------------------------------------------------------
> > > > > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > > > > For additional commands, e-mail: [EMAIL PROTECTED]
> > > > >
> > > > >
> > > >
> > > >
> > > > --
> > > > /ted
> > > >
> > > > ---------------------------------------------------------------------
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> > > > For additional commands, e-mail: [EMAIL PROTECTED]
> > > >
> > > >
> > >
> > >
> > > --
> > > Howard M. Lewis Ship
> > > TWD Consulting, Inc.
> > > Independent J2EE / Open-Source Java Consultant
> > > Creator and PMC Chair, Apache Tapestry
> > > Creator, Apache HiveMind
> > >
> > > Professional Tapestry training, mentoring, support
> > > and project work. http://howardlewisship.com
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > > For additional commands, e-mail: [EMAIL PROTECTED]
> > >
> > >
> >
> >
> > --
> > /ted
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
>
>
> --
> Howard M. Lewis Ship
> TWD Consulting, Inc.
> Independent J2EE / Open-Source Java Consultant
> Creator and PMC Chair, Apache Tapestry
> Creator, Apache HiveMind
>
> Professional Tapestry training, mentoring, support
> and project work. http://howardlewisship.com
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
--
/ted
--
/ted
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