On Jul 25, 2008, at 6:27 PM, Martin DeMello wrote:
So how do I give each flow its own click? (For that matter, am I doing
this the right way in the first place? What I need is a basic
one-column list view each of whose cells can have a different height
and background colour, and a click handler that's aware of which cell
was clicked. If there's a simpler way to achieve that than the code
below, I'm open to suggestions.)
Here's a start from a fellow fumbler.
Each slot can have its own click handler, but it's sometimes tricky
getting the handler assigned to the right slot. You might put a click
handler inside a flow's block, but the click handler will get assigned
to the app as a whole instead of the flow unless you specifically tell
it otherwise. One way to do it is to assign the slot explicitly with
a variable and call "click" as a method on that variable:
@this_flow = flow
@this_flow.append { para "whatever " }
@this_flow.click { alert "clicked this flow" }
but that's kind of unpleasant.
Experimenting around I found it was easy to make sure click handlers
and stuff did the right thing when I used custom widgets, like this:
( see http://hackety.org/2008/06/12/martinDemellosGooeyChallenge.html
for how custom widgets are defined)
======
class ListRow < Widget
def initialize(index, content, flow_style = {})
flow flow_style do
background( index % 2 == 0 ? lightblue : white )
para content, :size => 8
click do
alert "clicked flow #{index}"
end
end
end
end
class ListView < Widget
def initialize(ary, stack_style = {})
stack stack_style do
background white
(0..ary.length-1).to_a.each_with_index do | e, i |
listrow i, e
end
end
end
end
Shoes.app :width => 840, :height => 700, :title => "Test" do
background white
listview( (0..10).to_a , :width => 280, :margin_top =>
20, :margin_left => 10, :height => 600 )
end
