Bases: PyQt4.QtCore.QThread
Abstract implementation of a model thread class Thread in which the model runs, all requests to the model should be posted to the the model thread.
This class ensures the gui thread doesn’t block when the model needs time to complete tasks by providing asynchronous communication between the model thread and the gui thread
The Model thread class provides a number of signals :
thread_busy_signal
indicates if the model thread is working in the background
setup_exception_signal
this signal is emitted when there was an exception setting up the model thread, eg no connection to the database could be made. this exception is mostly fatal for the application.
Return True or False indicating wether either the model or the gui thread is doing something
Post a request to the model thread, request should be a function that takes no arguments. The request function will be called within the model thread. When the request is finished, on first occasion, the response function will be called within the gui thread. The response function takes as arguments, the results of the request function.
Parameters: |
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request function :param exception: a slot that will be called in case request throws an exception :param args: arguments with which the request function will be called
Decorator to ensure a function is only called from within the gui thread. If this function is called in another thread, an exception will be thrown
Decorator to ensure a function is only called from within the model thread. If this function is called in another thread, an exception will be thrown
Bases: PyQt4.QtCore.QObject
Disable automatic garbage collection and instead collect manually every INTERVAL milliseconds.
This is done to ensure that garbage collection only happens in the GUI thread, as otherwise Qt can crash.
This code is serves as a workaround for a bug in PyQt:
and is modeled after the original code of Kovid Goyal
Created on Sep 12, 2009
@author: tw55413
Created on Sep 9, 2009
@author: tw55413
Bases: camelot.view.model_thread.AbstractModelThread
A model thread implementation that uses signals and slots to communicate between the model thread and the gui thread
there is no explicit model thread verification on these methods, since this model thread might not be THE model thread.
Return True or False indicating wether either the model or the gui thread is doing something
Bases: PyQt4.QtCore.QObject
Bases: PyQt4.QtCore.QObject
A task handler is an object that handles tasks that appear in a queue, when its handle_task method is called, it will sequentially handle all tasks that are in the queue.