PartDesign: Chamfer feature corrections and improvements

========================================================

- Correction to mustExecute() to account for the new properties
- Make properties not used by the mode as read-only.
- Gui: apply() only for construction mode valid features

src/Mod/PartDesign/App/FeatureChamfer.cpp

@@ -76,11 +76,29 @@ Chamfer::Chamfer()
     Angle.setConstraints(&floatAngle);
 
     ADD_PROPERTY(FlipDirection, (false));
+
+    updateProperties();
 }
 
 short Chamfer::mustExecute() const
 {
-    if (Placement.isTouched() || Size.isTouched())
+    bool touched = false;
+
+    auto chamferType = ChamferType.getValue();
+
+    switch (chamferType) {
+        case 0: // "Equal distance"
+            touched = Size.isTouched() || ChamferType.isTouched();
+            break;
+        case 1: // "Two distances"
+            touched = Size.isTouched() || ChamferType.isTouched() || Size2.isTouched();
+            break;
+        case 2: // "Distance and Angle"
+            touched = Size.isTouched() || ChamferType.isTouched() || Angle.isTouched();
+            break;
+    }
+
+    if (Placement.isTouched() || touched)
         return 1;
     return DressUp::mustExecute();
 }
@@ -212,6 +230,39 @@ void Chamfer::Restore(Base::XMLReader &reader)
     reader.readEndElement("Properties");
 }
 
+void Chamfer::onChanged(const App::Property* prop)
+{
+    if (prop == &ChamferType) {
+        updateProperties();
+    }
+
+    DressUp::onChanged(prop);
+}
+
+void Chamfer::updateProperties()
+{
+    auto chamferType = ChamferType.getValue();
+
+    auto disableproperty = [](App::Property * prop, bool on) {
+        prop->setStatus(App::Property::ReadOnly, on);
+    };
+
+    switch (chamferType) {
+    case 0: // "Equal distance"
+        disableproperty(&this->Angle, true);
+        disableproperty(&this->Size2, true);
+        break;
+    case 1: // "Two distances"
+        disableproperty(&this->Angle, true);
+        disableproperty(&this->Size2, false);
+        break;
+    case 2: // "Distance and Angle"
+        disableproperty(&this->Angle, false);
+        disableproperty(&this->Size2, true);
+        break;
+    }
+}
+
 static App::DocumentObjectExecReturn *validateParameters(int chamferType, double size, double size2, double angle)
 {
     // Size is common to all chamfer types.
@@ -237,3 +288,5 @@ static App::DocumentObjectExecReturn *validateParameters(int chamferType, double
 
     return App::DocumentObject::StdReturn;
 }
+
+

src/Mod/PartDesign/App/FeatureChamfer.h

@@ -34,7 +34,7 @@ namespace PartDesign
 
 class PartDesignExport Chamfer : public DressUp
 {
-    PROPERTY_HEADER(PartDesign::Chamfer);
+    PROPERTY_HEADER_WITH_OVERRIDE(PartDesign::Chamfer);
 
 public:
     Chamfer();
@@ -48,17 +48,20 @@ public:
     /** @name methods override feature */
     //@{
     /// recalculate the feature
-    App::DocumentObjectExecReturn *execute(void);
-    short mustExecute() const;
+    App::DocumentObjectExecReturn *execute(void) override;
+    short mustExecute() const override;
     /// returns the type name of the view provider
-    const char* getViewProviderName(void) const {
+    const char* getViewProviderName(void) const override {
         return "PartDesignGui::ViewProviderChamfer";
     }
     //@}
 
-protected:
-    void Restore(Base::XMLReader &reader);
+    virtual void onChanged(const App::Property* /*prop*/) override;
 
+    void updateProperties();
+
+protected:
+    void Restore(Base::XMLReader &reader) override;
 };
 
 } //namespace Part

src/Mod/PartDesign/Gui/TaskChamferParameters.cpp

@@ -320,9 +320,25 @@ void TaskChamferParameters::apply()
     std::string name = DressUpView->getObject()->getNameInDocument();
 
     //Gui::Command::openCommand("Chamfer changed");
-    ui->chamferSize->apply();
-    ui->chamferSize2->apply();
-    ui->chamferAngle->apply();
+
+    PartDesign::Chamfer* pcChamfer = static_cast<PartDesign::Chamfer*>(DressUpView->getObject());
+
+    const int chamfertype = pcChamfer->ChamferType.getValue();
+
+    switch(chamfertype) {
+
+        case 0: // "Equal distance"
+            ui->chamferSize->apply();
+            break;
+        case 1: // "Two distances"
+            ui->chamferSize->apply();
+            ui->chamferSize2->apply();
+            break;
+        case 2: // "Distance and Angle"
+            ui->chamferSize->apply();
+            ui->chamferAngle->apply();
+            break;
+    }
 }
 
 //**************************************************************************