Add CrsWidgetWrapper

python/plugins/processing/core/parameters.py

@@ -162,12 +162,16 @@ class ParameterBoolean(Parameter):
 
 class ParameterCrs(Parameter):
 
-    def __init__(self, name='', description='', default=None, optional=False):
+    default_metadata = {
+        'widget_wrapper': 'processing.gui.wrappers.CrsWidgetWrapper'
+    }
+
+    def __init__(self, name='', description='', default=None, optional=False, metadata={}):
         '''The value is a string that uniquely identifies the
         coordinate reference system. Typically it is the auth id of the CRS
         (if the authority is EPSG) or proj4 string of the CRS (in case
         of other authorities or user defined projections).'''
-        Parameter.__init__(self, name, description, default, optional)
+        Parameter.__init__(self, name, description, default, optional, metadata)
 
     def setValue(self, value):
         if value is None or value.strip() == '':

python/plugins/processing/gui/AlgorithmDialog.py

@@ -55,7 +55,6 @@ from processing.core.parameters import ParameterMultipleInput
 from processing.core.parameters import ParameterString
 from processing.core.parameters import ParameterNumber
 from processing.core.parameters import ParameterFile
-from processing.core.parameters import ParameterCrs
 from processing.core.parameters import ParameterPoint
 from processing.core.parameters import ParameterGeometryPredicate
 
@@ -172,7 +171,7 @@ class AlgorithmDialog(AlgorithmDialogBase):
                 else:
                     options = dataobjects.getVectorLayers([param.datatype], sorting=False)
                 return param.setValue([options[i] for i in widget.selectedoptions])
-        elif isinstance(param, (ParameterNumber, ParameterFile, ParameterCrs,
+        elif isinstance(param, (ParameterNumber, ParameterFile,
                                 ParameterExtent, ParameterPoint)):
             return param.setValue(widget.getValue())
         elif isinstance(param, ParameterString):

python/plugins/processing/gui/CrsSelectionPanel.py

@@ -39,14 +39,16 @@ WIDGET, BASE = uic.loadUiType(
 
 class CrsSelectionPanel(BASE, WIDGET):
 
-    def __init__(self, default):
+    def __init__(self, default='EPSG:4326'):
         super(CrsSelectionPanel, self).__init__(None)
         self.setupUi(self)
 
         self.leText.setEnabled(False)
 
         self.btnSelect.clicked.connect(self.browseCRS)
-        self.crs = QgsCoordinateReferenceSystem(default).authid()
+
+        # TODO: Default should be removed
+        self.crs = default
         self.updateText()
 
     def setAuthId(self, authid):

python/plugins/processing/gui/ParametersPanel.py

@@ -411,8 +411,6 @@ class ParametersPanel(BASE, WIDGET):
             item = ExtentSelectionPanel(self.parent, self.alg, param.default)
         elif isinstance(param, ParameterPoint):
             item = PointSelectionPanel(self.parent, param.default)
-        elif isinstance(param, ParameterCrs):
-            item = CrsSelectionPanel(param.default)
         elif isinstance(param, ParameterString):
             if param.multiline:
                 verticalLayout = QVBoxLayout()

python/plugins/processing/gui/wrappers.py

@@ -28,11 +28,14 @@ __revision__ = '$Format:%H$'
 
 from inspect import isclass
 
+from qgis.core import QgsCoordinateReferenceSystem
 from qgis.PyQt.QtWidgets import (
     QCheckBox,
     QComboBox,
 )
 
+from processing.gui.CrsSelectionPanel import CrsSelectionPanel
+
 DIALOG_STANDARD = 'standard'
 DIALOG_BATCH = 'batch'
 DIALOG_MODELER = 'modeler'
@@ -115,3 +118,19 @@ class BooleanWidgetWrapper(WidgetWrapper):
 
         if self.dialog in (DIALOG_BATCH, DIALOG_MODELER):
             return self.widget.itemData(self.widget.currentIndex())
+
+
+class CrsWidgetWrapper(WidgetWrapper):
+
+    def createWidget(self, extra_values=[]):
+        return CrsSelectionPanel()
+
+    def setValue(self, value):
+        if isinstance(value, basestring):  # authId
+            self.widget.crs = value
+        else:
+            self.widget.crs = QgsCoordinateReferenceSystem(value).authid()
+        self.widget.updateText()
+
+    def value(self):
+        return self.widget.getValue()