mirror of
https://github.com/qgis/QGIS.git
synced 2025-11-04 00:04:25 -05:00
46 lines
1.9 KiB
Plaintext
46 lines
1.9 KiB
Plaintext
/************************************************************************
|
|
* This file has been generated automatically from *
|
|
* *
|
|
* src/core/qgsexpressioncontextgenerator.h *
|
|
* *
|
|
* Do not edit manually ! Edit header and run scripts/sipify.py again *
|
|
************************************************************************/
|
|
|
|
|
|
|
|
class QgsExpressionContextGenerator
|
|
{
|
|
%Docstring(signature="appended")
|
|
Abstract interface for generating an expression context.
|
|
|
|
You need to implement this interface in a class and register this class with
|
|
:py:func:`QgsFieldExpressionWidget.registerExpressionGenerator()`.
|
|
|
|
This is used for example in :py:class:`QgsPropertyOverrideButton` or :py:class:`QgsFieldExpressionWidget`
|
|
classes which will ask for a new :py:class:`QgsExpressionContext` every time the expression
|
|
editor is opened. This way they are able to provide an up-to-date expression
|
|
editor even when the environment changes.
|
|
%End
|
|
|
|
%TypeHeaderCode
|
|
#include "qgsexpressioncontextgenerator.h"
|
|
%End
|
|
public:
|
|
|
|
virtual QgsExpressionContext createExpressionContext() const = 0;
|
|
%Docstring
|
|
This method needs to be reimplemented in all classes which implement this interface
|
|
and return an expression context.
|
|
%End
|
|
|
|
virtual ~QgsExpressionContextGenerator();
|
|
};
|
|
|
|
/************************************************************************
|
|
* This file has been generated automatically from *
|
|
* *
|
|
* src/core/qgsexpressioncontextgenerator.h *
|
|
* *
|
|
* Do not edit manually ! Edit header and run scripts/sipify.py again *
|
|
************************************************************************/
|