Added some checks for external apps configuration

git-svn-id: http://sextante.googlecode.com/svn/trunk/soft/bindings/qgis-plugin@100 881b9c09-3ef8-f3c2-ec3d-21d735c97f4d

Author: volayaf@gmail.com

src/sextante/SextantePlugin.py

@@ -26,8 +26,6 @@ def __init__(self, iface):
         QGisLayers.setInterface(iface)
         Sextante.initialize()
         Sextante.setInterface(iface)
-        SextanteExternalAppsConfigurer.autoConfigure()
-
 
     def initGui(self):
         self.toolbox = SextanteToolbox(self.iface)

src/sextante/core/SextanteExternalAppsConfigurer.py

@@ -3,7 +3,7 @@
 class SextanteExternalAppsConfigurer():
 
     @staticmethod
-    def autoConfigure():
+    def checkSettings():
         IS_FIRST_USAGE = "IS_FIRST_USAGE"
         settings = QtCore.QSettings()
         if not settings.contains(IS_FIRST_USAGE):

src/sextante/grass/GrassAlgorithmProvider.py

@@ -18,7 +18,7 @@ def initializeSettings(self):
         AlgorithmProvider.initializeSettings(self)
         if SextanteUtils.isWindows():
             SextanteConfig.addSetting(Setting("GRASS", GrassUtils.GRASS_FOLDER, "GRASS folder", GrassUtils.grassPath()))
-            SextanteConfig.addSetting(Setting("GRASS", GrassUtils.GRASS_WIN_SHELL, "Shell executable", GrassUtils.grassWinShell()))
+            SextanteConfig.addSetting(Setting("GRASS", GrassUtils.GRASS_WIN_SHELL, "Msys folder", GrassUtils.grassWinShell()))
         SextanteConfig.addSetting(Setting("GRASS", GrassUtils.GRASS_AUTO_REGION, "Use min covering region", True))
         SextanteConfig.addSetting(Setting("GRASS", GrassUtils.GRASS_LATLON, "Coordinates are lat/lon", False))
         SextanteConfig.addSetting(Setting("GRASS", GrassUtils.GRASS_REGION_XMIN, "GRASS Region min x", 0))

src/sextante/grass/GrassUtils.py

@@ -5,6 +5,7 @@
 from sextante.core.SextanteLog import SextanteLog
 import stat
 import shutil
+import plugin_installer
 
 class GrassUtils:
 
@@ -39,7 +40,13 @@ def grassScriptFilename():
     def grassPath():
         folder = SextanteConfig.getSetting(GrassUtils.GRASS_FOLDER)
         if folder == None:
-            folder =""
+            folder = plugin_installer.__file__
+            idx = folder.find('qgis')
+            folder = folder[:idx] + "grass"
+            for subfolder in os.listdir(folder):
+                if subfolder.startswith("grass"):
+                    folder = folder + os.sep + subfolder
+                    break
 
         return folder
 
@@ -53,11 +60,13 @@ def grassHelpPath():
 
     @staticmethod
     def grassWinShell():
-        shell = SextanteConfig.getSetting(GrassUtils.GRASS_WIN_SHELL)
-        if shell == None:
-            shell =""
+        folder = SextanteConfig.getSetting(GrassUtils.GRASS_WIN_SHELL)
+        if folder == None:
+            folder = plugin_installer.__file__
+            idx = folder.find('qgis')
+            folder = folder[:idx] + "msys"
 
-        return shell
+        return folder
 
     @staticmethod
     def grassDescriptionPath():

src/sextante/r/RAlgorithm.py

@@ -1,3 +1,7 @@
+import os
+from PyQt4.QtCore import *
+from PyQt4.QtGui import *
+from PyQt4 import QtGui, QtCore
 from sextante.core.GeoAlgorithm import GeoAlgorithm
 from sextante.parameters.ParameterRaster import ParameterRaster
 from sextante.parameters.ParameterTable import ParameterTable
@@ -10,15 +14,14 @@
 from sextante.parameters.ParameterString import ParameterString
 from sextante.parameters.ParameterNumber import ParameterNumber
 from sextante.parameters.ParameterBoolean import ParameterBoolean
-import os
 from sextante.parameters.ParameterSelection import ParameterSelection
-from PyQt4 import QtGui
 from sextante.parameters.ParameterTableField import ParameterTableField
 from sextante.outputs.OutputHTML import OutputHTML
 from sextante.r.RUtils import RUtils
 from sextante.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
 from sextante.core.SextanteLog import SextanteLog
 from sextante.core.SextanteUtils import SextanteUtils
+import subprocess
 
 class RAlgorithm(GeoAlgorithm):
 
@@ -148,7 +151,7 @@ def processAlgorithm(self, progress):
         if SextanteUtils.isWindows():
             path = RUtils.RFolder()
             if path == "":
-                raise GeoAlgorithmExecutionException("R folder is not configured.\nPlease configure it before running R script.")
+                raise GeoAlgorithmExecutionException("R folder is not configured.\nPlease configure it before running R scripts.")
         loglines = []
         loglines.append("R execution commands")
         loglines += self.getFullSetOfRCommands()
@@ -272,3 +275,21 @@ def getRCommands(self):
         return self.commands
 
 
+    def checkBeforeOpeningParametersDialog(self):
+        if SextanteUtils.isWindows():
+            path = RUtils.RFolder()
+            if path == "":
+                return "R folder is not configured.\nPlease configure it before running R scripts."
+        else:
+            R_INSTALLED = "R_INSTALLED"
+            settings = QSettings()
+            if settings.contains(R_INSTALLED):
+                return
+            command = ["R CMD BATCH"]
+            proc = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE,stderr=subprocess.STDOUT, universal_newlines=True).stdout
+            for line in iter(proc.readline, ""):
+                if "no input file" in line:
+                    settings.setValue(R_INSTALLED, True)
+                    return
+            return "It seems that SAGA is not correctly installed in your system.\nPlease install it before running SAGA algorithms."
+

src/sextante/saga/SagaAlgorithm.py

@@ -23,6 +23,7 @@
 from sextante.parameters.ParameterNumber import ParameterNumber
 from sextante.parameters.ParameterSelection import ParameterSelection
 from sextante.core.LayerExporter import LayerExporter
+import subprocess
 
 class SagaAlgorithm(GeoAlgorithm):
 
@@ -275,5 +276,21 @@ def exportRasterLayer(self, layer):
             return "libio_gdal 0 -GRIDS \"" + destFilename + "\" -FILES \"" + layer + "\""
 
 
-
+    def checkBeforeOpeningParametersDialog(self):
+        if SextanteUtils.isWindows():
+            path = SagaUtils.sagaPath()
+            if path == "":
+                return "SAGA folder is not configured.\nPlease configure it before running SAGA algorithms."
+        else:
+            SAGA_INSTALLED = "SAGA_INSTALLED"
+            settings = QSettings()
+            if settings.contains(SAGA_INSTALLED):
+                return
+            command = ["saga_cmd"]
+            proc = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE,stderr=subprocess.STDOUT, universal_newlines=True).stdout
+            for line in iter(proc.readline, ""):
+                if "-------------" in line:
+                    settings.setValue(SAGA_INSTALLED, True)
+                    return
+            return "It seems that SAGA is not correctly installed in your system.\nPlease install it before running SAGA algorithms."
 

src/sextanteexampleprovider/ExampleAlgorithm.py

@@ -38,7 +38,7 @@ def defineCharacteristics(self):
         #we add the input vector layer. It can have any kind of geometry
         #It is a mandatory (not optional) one, hence the False argument
         self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", ParameterVector.VECTOR_TYPE_ANY, False))
-
+        self.addParameter(ParameterExtent("EXTENT","EXTENT"))
         # we add a vector layer as output
         self.addOutput(OutputVector(self.OUTPUT_LAYER, "Output layer with selected features"))