Material: Provisorily hide preview fields while mat preview is not implemented

src/Mod/Material/MaterialEditor.py

@@ -67,6 +67,10 @@ class MaterialEditor:
         buttonSave = widget.ButtonSave
         comboMaterial = widget.ComboMaterial
         treeView = widget.treeView
+        
+        # temporarily hide preview fields, as they are not used yet
+        # TODO : implement previews
+        widget.PreviewGroup.hide()
 
         buttonURL.setIcon(QtGui.QIcon(":/icons/internet-web-browser.svg"))
         buttonDeleteProperty.setEnabled(False)

src/Mod/Material/materials-editor.ui

@@ -90,7 +90,7 @@
       </layout>
      </item>
      <item>
-      <widget class="QGroupBox" name="groupBox_3">
+      <widget class="QGroupBox" name="PreviewGroup">
        <property name="title">
         <string>Preview</string>
        </property>
@@ -143,8 +143,7 @@
         <enum>QLayout::SetMaximumSize</enum>
        </property>
        <item>
-        <widget class="QTreeView" name="treeView">
-        </widget>
+        <widget class="QTreeView" name="treeView"/>
        </item>
       </layout>
      </item>