Running job on library change

davidfor · 11-26-2013, 04:16 AM

For my Kobo Utilities plugin, I am adding an option to run a job when the device is connected. This will fetch the reading status of the books from the device and populate some custom columns. I have this working, but I realised it also needs to be run after changing to a new library.

Looking through the code of other plugins, the only thing I could find was library_changed. At first look, this seemed to be what I wanted. But, it gets called before the ondevice status has been updated for the new library. I am using this to decide which books need to have the reading status retrieved from the device.

Have I missed something? Is there another signal or call a bit later that I can use? Or, can I get the list I need from within the job? The last time I looked at this, I couldn't, but that was before the new database engine.

kovidgoyal · 11-26-2013, 05:17 AM

library_change is the only callback for changing libraries.

IIRC the on device column is populated in the GUI thread on library change, there for you should just be able to do this:

Code:

def library_changed(self):
   QTimer.singleShot(0, self.do_work)

def do_work(self):
   # the on device column should be populated here.

davidfor · 11-26-2013, 06:26 AM

That works. Thanks.

11-26-2013, 04:16 AM	#1
davidfor Grand Sorcerer Posts: 24,907 Karma: 47303748 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	Running job on library change For my Kobo Utilities plugin, I am adding an option to run a job when the device is connected. This will fetch the reading status of the books from the device and populate some custom columns. I have this working, but I realised it also needs to be run after changing to a new library. Looking through the code of other plugins, the only thing I could find was library_changed. At first look, this seemed to be what I wanted. But, it gets called before the ondevice status has been updated for the new library. I am using this to decide which books need to have the reading status retrieved from the device. Have I missed something? Is there another signal or call a bit later that I can use? Or, can I get the list I need from within the job? The last time I looked at this, I couldn't, but that was before the new database engine.

11-26-2013, 05:17 AM	#2
kovidgoyal creator of calibre Posts: 43,869 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	library_change is the only callback for changing libraries. IIRC the on device column is populated in the GUI thread on library change, there for you should just be able to do this: Code: def library_changed(self): QTimer.singleShot(0, self.do_work) def do_work(self): # the on device column should be populated here.

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11-26-2013, 06:26 AM	#3
davidfor Grand Sorcerer Posts: 24,907 Karma: 47303748 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	That works. Thanks.

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