[processing] save last used models/scripts directory (fix #12536)

Author: alexbruy

python/plugins/processing/modeler/AddModelFromFileAction.py

@@ -28,6 +28,7 @@
 import os
 import shutil
 from PyQt4.QtGui import QIcon, QFileDialog, QMessageBox
+from PyQt4.QtCore import QSettings, QFileInfo
 from processing.gui.ToolboxAction import ToolboxAction
 from processing.modeler.ModelerAlgorithm import ModelerAlgorithm
 from processing.modeler.WrongModelException import WrongModelException
@@ -43,11 +44,16 @@ def getIcon(self):
         return QIcon(os.path.dirname(__file__) + '/../images/model.png')
 
     def execute(self):
+        settings = QSettings()
+        lastDir = settings.value('Processing/lastModelsDir', '')
         filename = QFileDialog.getOpenFileName(self.toolbox,
-            self.tr('Open model', 'AddModelFromFileAction'), None,
+            self.tr('Open model', 'AddModelFromFileAction'), lastDir,
             self.tr('Processing model files (*.model *.MODEL)', 'AddModelFromFileAction'))
         if filename:
             try:
+                settings.setValue('Processing/lastModelsDir',
+                    QFileInfo(fileName).absoluteDir().absolutePath())
+
                 ModelerAlgorithm.fromFile(filename)
             except WrongModelException:
                 QMessageBox.warning(

python/plugins/processing/script/AddScriptFromFileAction.py

@@ -42,12 +42,16 @@ def getIcon(self):
         return QIcon(':/processing/images/script.png')
 
     def execute(self):
+        settings = QSettings()
+        lastDir = settings.value('Processing/lastScriptsDir', '')
         filename = QFileDialog.getOpenFileName(self.toolbox,
             self.tr('Script files', 'AddScriptFromFileAction'), None,
-            self.tr('Script files (*.py *.PY)', 'AddScriptFromFileAction')
-        )
+            self.tr('Script files (*.py *.PY)', 'AddScriptFromFileAction'))
         if filename:
             try:
+                settings.setValue('Processing/lastScriptsDir',
+                    QFileInfo(fileName).absoluteDir().absolutePath())
+
                 script = ScriptAlgorithm(filename)
             except WrongScriptException:
                 QMessageBox.warning(self.toolbox,