[processing] allow adding core processing algs using scripts

python/plugins/processing/algs/qgis/QGISAlgorithmProvider.py

@@ -16,6 +16,8 @@
 *                                                                         *
 ***************************************************************************
 """
+from processing.script.ScriptUtils import ScriptUtils
+import os
 
 
 __author__ = 'Victor Olaya'
@@ -114,6 +116,8 @@
 
 class QGISAlgorithmProvider(AlgorithmProvider):
 
+    _icon = QIcon(':/processing/images/qgis.png')
+
     def __init__(self):
         AlgorithmProvider.__init__(self)
         self.alglist = [SumLines(), PointsInPolygon(),
@@ -166,6 +170,13 @@ def __init__(self):
                         # RasterLayerHistogram(), MeanAndStdDevPlot(),
                         # BarPlot(), PolarPlot()
                        ]
+
+        folder = os.path.join(os.path.dirname(__file__), 'scripts')
+        scripts = ScriptUtils.loadFromFolder(folder)
+        for script in scripts:
+            script._icon = self._icon
+            script.allowEdit = False
+        self.alglist.extend(scripts)
 
     def initializeSettings(self):
         AlgorithmProvider.initializeSettings(self)
@@ -180,7 +191,7 @@ def getDescription(self):
         return 'QGIS geoalgorithms'
 
     def getIcon(self):
-        return QIcon(':/processing/images/qgis.png')
+        return self._icon
 
     def _loadAlgorithms(self):
         self.algs = self.alglist

python/plugins/processing/gui/DeleteScriptAction.py

@@ -46,7 +46,7 @@ def __init__(self, scriptType):
 
     def isEnabled(self):
         if self.scriptType == self.SCRIPT_PYTHON:
-            return isinstance(self.alg, ScriptAlgorithm)
+            return isinstance(self.alg, ScriptAlgorithm) and self.alg.allowEdit
         elif self.scriptType == self.SCRIPT_R:
             return isinstance(self.alg, RAlgorithm)
 

python/plugins/processing/gui/EditScriptAction.py

@@ -42,7 +42,7 @@ def __init__(self, scriptType):
 
     def isEnabled(self):
         if self.scriptType == ScriptEditorDialog.SCRIPT_PYTHON:
-            return isinstance(self.alg, ScriptAlgorithm)
+            return isinstance(self.alg, ScriptAlgorithm) and self.alg.allowEdit
         elif self.scriptType == ScriptEditorDialog.SCRIPT_R:
             return isinstance(self.alg, RAlgorithm)
 

python/plugins/processing/script/ScriptAlgorithm.py

@@ -55,6 +55,8 @@
 
 class ScriptAlgorithm(GeoAlgorithm):
 
+    _icon = QtGui.QIcon(os.path.dirname(__file__) + '/../images/script.png')
+
     def __init__(self, descriptionFile, script=None):
         """The script parameter can be used to directly pass the code
         of the script without a file.
@@ -65,6 +67,7 @@ def __init__(self, descriptionFile, script=None):
 
         GeoAlgorithm.__init__(self)
         self.script = script
+        self.allowEdit = True
         self.descriptionFile = descriptionFile
         if script is not None:
             self.defineCharacteristicsFromScript()
@@ -77,7 +80,7 @@ def getCopy(self):
         return newone
 
     def getIcon(self):
-        return QtGui.QIcon(os.path.dirname(__file__) + '/../images/script.png')
+        return self._icon
 
     def defineCharacteristicsFromFile(self):
         self.script = ''

python/plugins/processing/script/ScriptAlgorithmProvider.py

@@ -25,25 +25,21 @@
 
 __revision__ = '$Format:%H$'
 
-import os.path
 from PyQt4.QtCore import *
 from PyQt4.QtGui import *
 from processing.core.ProcessingConfig import ProcessingConfig, Setting
-from processing.core.ProcessingLog import ProcessingLog
 from processing.core.AlgorithmProvider import AlgorithmProvider
 from processing.gui.EditScriptAction import EditScriptAction
 from processing.gui.DeleteScriptAction import DeleteScriptAction
 from processing.gui.CreateNewScriptAction import CreateNewScriptAction
-from processing.script.ScriptAlgorithm import ScriptAlgorithm
 from processing.script.ScriptUtils import ScriptUtils
-from processing.script.WrongScriptException import WrongScriptException
 from processing.script.AddScriptFromFileAction import AddScriptFromFileAction
 from processing.gui.GetScriptsAndModels import GetScriptsAction
 import processing.resources_rc
 
 
 class ScriptAlgorithmProvider(AlgorithmProvider):
-
+   
     def __init__(self):
         AlgorithmProvider.__init__(self)
         self.actions.extend([CreateNewScriptAction('Create new script',
@@ -76,24 +72,6 @@ def getDescription(self):
 
     def _loadAlgorithms(self):
         folder = ScriptUtils.scriptsFolder()
-        self.loadFromFolder(folder)
-        folder = os.path.join(os.path.dirname(__file__), 'scripts')
-        self.loadFromFolder(folder)
+        self.algs = ScriptUtils.loadFromFolder(folder)
+
 
-    def loadFromFolder(self, folder):
-        if not os.path.exists(folder):
-            return
-        for path, subdirs, files in os.walk(folder):
-            for descriptionFile in files:
-                if descriptionFile.endswith('py'):
-                    try:
-                        fullpath = os.path.join(path, descriptionFile)
-                        alg = ScriptAlgorithm(fullpath)
-                        if alg.name.strip() != '':
-                            self.algs.append(alg)
-                    except WrongScriptException, e:
-                        ProcessingLog.addToLog(ProcessingLog.LOG_ERROR, e.msg)
-                    except Exception, e:
-                        ProcessingLog.addToLog(ProcessingLog.LOG_ERROR,
-                                'Could not load script:' + descriptionFile + '\n'
-                                + unicode(e))

python/plugins/processing/script/ScriptUtils.py

@@ -27,8 +27,10 @@
 
 import os
 from processing.core.ProcessingConfig import ProcessingConfig
-from processing.tools.system import *
-
+from processing.script.ScriptAlgorithm import ScriptAlgorithm
+from processing.script.WrongScriptException import WrongScriptException
+from processing.core.ProcessingLog import ProcessingLog
+from processing.tools.system import mkdir, userFolder
 
 class ScriptUtils:
 
@@ -43,3 +45,24 @@ def scriptsFolder():
         mkdir(folder)
 
         return os.path.abspath(folder)
+
+    @staticmethod
+    def loadFromFolder(folder):        
+        if not os.path.exists(folder):
+            return []
+        algs = []
+        for path, subdirs, files in os.walk(folder):
+            for descriptionFile in files:
+                if descriptionFile.endswith('py'):
+                    try:
+                        fullpath = os.path.join(path, descriptionFile)
+                        alg = ScriptAlgorithm(fullpath)
+                        if alg.name.strip() != '':
+                            algs.append(alg)
+                    except WrongScriptException, e:
+                        ProcessingLog.addToLog(ProcessingLog.LOG_ERROR, e.msg)
+                    except Exception, e:
+                        ProcessingLog.addToLog(ProcessingLog.LOG_ERROR,
+                                'Could not load script:' + descriptionFile + '\n'
+                                + unicode(e))
+        return algs