[processing] Fix gdal algorithm use of old wrapper API

nyalldawson · nyalldawson · commit c8abd40250f5 · 2018-09-11T15:40:27.000+10:00
diff --git a/python/plugins/processing/algs/gdal/GdalAlgorithmDialog.py b/python/plugins/processing/algs/gdal/GdalAlgorithmDialog.py
@@ -49,6 +49,7 @@
 from processing.gui.MultipleInputPanel import MultipleInputPanel
 from processing.gui.NumberInputPanel import NumberInputPanel
 from processing.gui.DestinationSelectionPanel import DestinationSelectionPanel
+from processing.gui.wrappers import WidgetWrapper
 from processing.tools.dataobjects import createContext
 
 
@@ -85,10 +86,23 @@ def __init__(self, parent, alg):
 
     def connectParameterSignals(self):
         for wrapper in list(self.wrappers.values()):
-            w = wrapper.widget
+            wrapper.widgetValueHasChanged.connect(self.parametersHaveChanged)
+
+            # TODO - remove when all wrappers correctly emit widgetValueHasChanged!
+
+            # For compatibility with 3.x API, we need to check whether the wrapper is
+            # the deprecated WidgetWrapper class. If not, it's the newer
+            # QgsAbstractProcessingParameterWidgetWrapper class
+            # TODO QGIS 4.0 - remove
+            if issubclass(wrapper.__class__, WidgetWrapper):
+                w = wrapper.widget
+            else:
+                w = wrapper.wrappedWidget()
+
             self.connectWidgetChangedSignals(w)
             for c in w.findChildren(QWidget):
                 self.connectWidgetChangedSignals(c)
+
         for output_widget in self.outputWidgets.values():
             self.connectWidgetChangedSignals(output_widget)
 
diff --git a/python/plugins/processing/algs/qgis/ui/FieldsMappingPanel.py b/python/plugins/processing/algs/qgis/ui/FieldsMappingPanel.py
@@ -513,9 +513,9 @@ def updatePanelEnabledState():
 
     def postInitialize(self, wrappers):
         for wrapper in wrappers:
-            if wrapper.param.name() == self.parameterDefinition().parentLayerParameter():
-                if wrapper.value():
-                    self.setLayer(wrapper.value())
+            if wrapper.parameterDefinition().name() == self.parameterDefinition().parentLayerParameter():
+                if wrapper.parameterValue():
+                    self.setLayer(wrapper.parameterValue())
                 wrapper.widgetValueHasChanged.connect(self.parentLayerChanged)
                 break
 
diff --git a/python/plugins/processing/algs/qgis/ui/HeatmapWidgets.py b/python/plugins/processing/algs/qgis/ui/HeatmapWidgets.py
@@ -182,30 +182,30 @@ def postInitialize(self, wrappers):
 
         for wrapper in wrappers:
             if wrapper.parameterDefinition().name() == self.param.parent_layer:
-                self.setSource(wrapper.value())
+                self.setSource(wrapper.parameterValue())
                 wrapper.widgetValueHasChanged.connect(self.parentLayerChanged)
             elif wrapper.parameterDefinition().name() == self.param.radius_param:
-                self.setRadius(wrapper.value())
+                self.setRadius(wrapper.parameterValue())
                 wrapper.widgetValueHasChanged.connect(self.radiusChanged)
             elif wrapper.parameterDefinition().name() == self.param.radius_field_param:
-                self.setSource(wrapper.value())
+                self.setSource(wrapper.parameterValue())
                 wrapper.widgetValueHasChanged.connect(self.radiusFieldChanged)
 
     def parentLayerChanged(self, wrapper):
-        self.setSource(wrapper.value())
+        self.setSource(wrapper.parameterValue())
 
     def setSource(self, source):
         source = QgsProcessingUtils.variantToSource(source, self.context)
         self.widget.setSource(source)
 
     def radiusChanged(self, wrapper):
-        self.setRadius(wrapper.value())
+        self.setRadius(wrapper.parameterValue())
 
     def setRadius(self, radius):
         self.widget.setRadius(radius)
 
     def radiusFieldChanged(self, wrapper):
-        self.setRadiusField(wrapper.value())
+        self.setRadiusField(wrapper.parameterValue())
 
     def setRadiusField(self, radius_field):
         self.widget.setRadiusField(radius_field)
diff --git a/python/plugins/processing/algs/qgis/ui/ReliefColorsWidget.py b/python/plugins/processing/algs/qgis/ui/ReliefColorsWidget.py
@@ -258,7 +258,7 @@ def postInitialize(self, wrappers):
                 break
 
     def parentValueChanged(self, wrapper):
-        self.setLayer(wrapper.value())
+        self.setLayer(wrapper.parameterValue())
 
     def setLayer(self, layer):
         if isinstance(layer, QgsMapLayer):
