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/************************************************************************
* This file has been generated automatically from *
* *
* src/gui/qgsapplicationexitblockerinterface.h *
* *
* Do not edit manually ! Edit header and run scripts/sipify.pl again *
************************************************************************/
class QgsApplicationExitBlockerInterface
{
%Docstring(signature="appended")
An interface that may be implemented to allow plugins or scripts to temporarily block
the QGIS application from exiting.
This interface allows plugins to implement custom logic to determine whether it is safe
for the application to exit, e.g. by checking whether the plugin or script has any
unsaved changes which should be saved or discarded before allowing QGIS to exit.
:py:class:`QgsApplicationExitBlockerInterface` are registered via the iface object:
Example
-------
.. code-block:: python
class MyPluginExitBlocker(QgsApplicationExitBlockerInterface):
def allowExit(self):
if self.has_unsaved_changes():
# show a warning prompt
# ...
# prevent QGIS application from exiting
return False
# allow QGIS application to exit
return True
my_blocker = MyPluginExitBlocker()
iface.registerApplicationExitBlocker(my_blocker)
.. versionadded:: 3.16
%End
%TypeHeaderCode
#include "qgsapplicationexitblockerinterface.h"
%End
public:
virtual ~QgsApplicationExitBlockerInterface();
virtual bool allowExit() = 0;
%Docstring
Called whenever the QGIS application has been asked to exit by a user.
The subclass can use this method to implement custom logic handling whether it is safe
for the application to exit, e.g. by checking whether the plugin or script has any unsaved
changes which should be saved or discarded before allowing QGIS to exit.
The implementation should return ``True`` if it is safe for QGIS to exit, or ``False`` if it
wishes to prevent the application from exiting.
.. note::
It is safe to use GUI widgets in implementations of this function, including message
boxes or custom dialogs with event loops.
%End
};
/************************************************************************
* This file has been generated automatically from *
* *
* src/gui/qgsapplicationexitblockerinterface.h *
* *
* Do not edit manually ! Edit header and run scripts/sipify.pl again *
************************************************************************/
|
