fixing little issues on my QML/Python program

Eric Mesa ericsbinaryworld at gmail.com
Tue Jun 26 03:01:46 UTC 2012


Thanks to everyone who's helped me over the last year or so with my
program.  I have one more thing to fix on my engine and then it will be
"perfect".  The recent help I got helped me finally perfect the GUI.  So my
data engine's running a function over and over with different arguments to
populate the sources.  Here's what it looks like:

from PyQt4.QtCore import *
from PyKDE4.kdecore import *
from PyKDE4 import plasmascript
#for flickr
import views


class PyFlickrEngine(plasmascript.DataEngine):
  def __init__(self,parent,args=None):
    plasmascript.DataEngine.__init__(self,parent)

  def init(self):
    self.setMinimumPollingInterval(333)
    #for flickr
    views.initialize()

  #adding this back in 24 jan to see if it helps
  def sources(self):
    sources = ["25", "50", "75", "100", "200", "300", "400", "500", "600",
"700", "800", "900", "1000", "1250", "1500", "1750", "2000","3000", "4000",
"5000", "10000"]
    return sources

  def sourceRequestEvent(self, name):
    #print "source request event" #debugging
    return self.updateSourceEvent(name)

  def updateSourceEvent(self,group):
    print "updateSourceEvent"
    #grouplist = []
    if group == "25":
      grouplist = views.analyzeviews(views.views25, views.views50)
      self.setData("25", "Group 25", grouplist)
    elif group == "50":
      grouplist = views.analyzeviews(views.views50, views.views75)
      self.setData("50","Group 50", grouplist)
    elif group == "75":
      grouplist = views.analyzeviews(views.views75,views.views100)
      self.setData("75","Group 75", grouplist)
    elif group == "100":
      print "i'm @ 100" #debug
      grouplist = views.analyzeviews(views.views100,views.views200)
      self.setData("100","Group 100", grouplist)
    elif group == "200":
      print "i'm @ 200" #debug
      grouplist = views.analyzeviews(views.views200, views.views300)
      self.setData("200","Group 200", grouplist)
*... (cut a snippet out - I think you get the point)*
    elif group == "10000":
      print "i'm @ 10000" #debug
      grouplist = views.analyzeviews(views.views10000, views.views10000)
      self.setData("10000","Group 10000", grouplist)
    return True

def CreateDataEngine(parent):
  return PyFlickrEngine(parent)

So that function it's calling, views.analyzeviews(arg, arg) is calling a
web API and sometimes that API fails.  The cool thing about data engines vs
when I used to do this on the commandline is that if it fails at 25, it
doesn't crash the whole program.  It just moves on to 50.  So I can end up
in the end where when I click on 25 it tells me that there's nothing in the
source and then I click on 50 and I can use the data from that source.  So,
right now if I want the data from 25, the only way I know how to do that is
by re-running the program and hoping the API doesn't fail that time
around.  Is there a way for me to tell the data engine to update group 25
again from within the QML gui?

Thanks!
--
Eric Mesa
http://about.me/ericmesa
http://www.ericsbinaryworld.com
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