[FEATURE] Script-provided algorithms support for run script action

Scripts with now launch a processing algorithm dialog (when appropriate) when: - drag and dropping a python script onto the main window - using the browser panel's right-click run script action
qgis · Aug 20, 2018 · fcd0157 · fcd0157
1 parent a6d0d7a
commit fcd0157
Showing 1 changed file with 21 additions and 2 deletions.
diff --git a/src/app/qgisapp.cpp b/src/app/qgisapp.cpp
@@ -6179,9 +6179,28 @@ void QgisApp::runScript( const QString &filePath )
 
   mPythonUtils->runString(
     QString( "import sys\n"
+             "import inspect\n"
              "from qgis.utils import iface\n"
-             "exec(open(\"%1\".replace(\"\\\\\", \"/\").encode(sys.getfilesystemencoding())).read())\n" ).arg( filePath )
-    , tr( "Failed to run Python script:" ), false );
+             "try:\n"
+             "    from qgis.core import QgsApplication, QgsProcessingAlgorithm, QgsProcessingFeatureBasedAlgorithm\n"
+             "    from processing.gui.AlgorithmDialog import AlgorithmDialog\n"
+             "except ImportError:\n"
+             "    processing_found = False\n"
+             "else:\n"
+             "    processing_found = True\n"
+             "d={}\n"
+             "exec(open(\"%1\".replace(\"\\\\\", \"/\").encode(sys.getfilesystemencoding())).read(), d)\n"
+             "if processing_found:\n"
+             "    alg = None\n"
+             "    for k, v in d.items():\n"
+             "        if inspect.isclass(v) and issubclass(v, (QgsProcessingAlgorithm, QgsProcessingFeatureBasedAlgorithm)) and v.__name__ not in (\"QgsProcessingAlgorithm\", \"QgsProcessingFeatureBasedAlgorithm\"):\n"
+             "            alg = v()\n"
+             "            break\n"
+             "    if alg:\n"
+             "        alg.setProvider(QgsApplication.processingRegistry().providerById(\"script\"))\n"
+             "        alg.initAlgorithm()\n"
+             "        dlg = AlgorithmDialog(alg)\n"
+             "        dlg.show()\n" ).arg( filePath ), tr( "Failed to run Python script:" ), false );
 #else
   Q_UNUSED( filePath );
 #endif