This (the lack of automatic layouts) is one of the Frequent
Encountered Problems: http://wiki.openlaszlo.org/Gotchas
The other topic that came up yesterday, about clickable, is another
one. I'll add it to the list when I get a chance, unless someone
else beats me to it.
On Dec 6, 2005, at 8:22 PM, Adam Wolff wrote:
This is actually working as you would hope, you're just missing a
layout. Try this (notice the extra layout inside dataView)
<view name="rowOfData" datapath="myData:/myXML[1]/person[1]">
<simplelayout axis="x" />
<view name="other pretty stuff"/>
<view name="dataView">
<simplelayout axis="x" />
<text datapath="firstName/text()" />
<text datapath="lastName/text()" />
<text datapath="@show" />
</view>
</view>
On Dec 6, James Howe wrote:
I'm working on an application which is using a datapath. In simple
cases I understand how they work, how they replicate objects for each
node, etc. But I have a slightly more complicated way that I want to
access them and I'm not sure of the syntax. For example, here is a
simple example from the chapter on data binding (Chapter 33):
<canvas height="80" width="500">
<dataset name="myData">
<myXML>
<person show="simpsons">
<firstName>Homer</firstName>
<lastName>Simpson</lastName>
</person>
<person show="simpsons">
<firstName>Marge</firstName>
<lastName>Simpson</lastName>
</person>
<person show="simpsons">
<firstName>Montgomery</firstName>
<lastName>Burns</lastName>
</person>
</myXML>
</dataset>
<view name="rowOfData" datapath="myData:/myXML[1]/person[1]">
<simplelayout axis="x" />
<text datapath="firstName/text()" />
<text datapath="lastName/text()" />
<text datapath="@show" />
</view>
</canvas>
Running this generates a single row with data about Homer. Now,
suppose
I wanted to display more than the row of data. Suppose I wanted to
decorate it somehow using a more complicated view structure. Suppose
the view part looked more like this:
<canvas height="80" width="500">
...
<view name="rowOfData" datapath="myData:/myXML[1]/person[1]">
<simplelayout axis="x" />
<view name="other pretty stuff"/>
<view name="dataView">
<text datapath="firstName/text()" />
<text datapath="lastName/text()" />
<text datapath="@show" />
</view>
</view>
</canvas>
How do I access the datapath information in the <text> tags? If I
use
the code above, I get no data, presumably because the datapaths in
the
text elements don't have anything to hook up to because their parent
view has no datapath? There's probably a simple solution to this,
but
I'm not sure how I would go about hooking up the text fields to a
datapath associated with a view higher up in the view hierarchy.
Or is
there a better way to solve this problem?
Thanks!
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