refuse to create partdesign objects if no active body in document

src/Mod/PartDesign/Gui/Command.cpp

@@ -870,6 +870,14 @@ CmdPartDesignPad::CmdPartDesignPad()
 
 void CmdPartDesignPad::activated(int iMsg)
 {
+	App::Document *doc = getDocument();
+	PartDesign::Body *pcActiveBody = PartDesignGui::getBody(
+		/*messageIfNot = */ PartDesignGui::assureModernWorkflow(doc));
+
+	// No PartDesign feature without Body past FreeCAD 0.16
+	if (!pcActiveBody && PartDesignGui::isModernWorkflow(doc))
+		return;
+
     Gui::Command* cmd = this;
     auto worker = [cmd](Part::Feature* profile, std::string FeatName) {
 
@@ -919,6 +927,14 @@ CmdPartDesignPocket::CmdPartDesignPocket()
 
 void CmdPartDesignPocket::activated(int iMsg)
 {
+	App::Document *doc = getDocument();
+	PartDesign::Body *pcActiveBody = PartDesignGui::getBody(
+		/*messageIfNot = */ PartDesignGui::assureModernWorkflow(doc));
+
+	// No PartDesign feature without Body past FreeCAD 0.16
+	if (!pcActiveBody && PartDesignGui::isModernWorkflow(doc))
+		return;
+
     Gui::Command* cmd = this;
     auto worker = [cmd](Part::Feature* sketch, std::string FeatName) {
 
@@ -956,6 +972,14 @@ CmdPartDesignRevolution::CmdPartDesignRevolution()
 
 void CmdPartDesignRevolution::activated(int iMsg)
 {
+	App::Document *doc = getDocument();
+	PartDesign::Body *pcActiveBody = PartDesignGui::getBody(
+		/*messageIfNot = */ PartDesignGui::assureModernWorkflow(doc));
+
+	// No PartDesign feature without Body past FreeCAD 0.16
+	if (!pcActiveBody && PartDesignGui::isModernWorkflow(doc))
+		return;
+
     Gui::Command* cmd = this;
     auto worker = [cmd](Part::Feature* sketch, std::string FeatName) {
 
@@ -999,6 +1023,13 @@ CmdPartDesignGroove::CmdPartDesignGroove()
 
 void CmdPartDesignGroove::activated(int iMsg)
 {
+	App::Document *doc = getDocument();
+	PartDesign::Body *pcActiveBody = PartDesignGui::getBody(
+		/*messageIfNot = */ PartDesignGui::assureModernWorkflow(doc));
+
+	if (!pcActiveBody && PartDesignGui::isModernWorkflow(doc))
+		return;
+
     Gui::Command* cmd = this;
     auto worker = [cmd](Part::Feature* sketch, std::string FeatName) {
 
@@ -1042,6 +1073,12 @@ CmdPartDesignAdditivePipe::CmdPartDesignAdditivePipe()
 
 void CmdPartDesignAdditivePipe::activated(int iMsg)
 {
+	PartDesign::Body *pcActiveBody = PartDesignGui::getBody(/*messageIfNot = */ true);
+
+	// No PartDesign feature without Body past FreeCAD 0.13
+	if (!pcActiveBody)
+		return;
+
     Gui::Command* cmd = this;
     auto worker = [cmd](Part::Feature* sketch, std::string FeatName) {
 
@@ -1082,6 +1119,12 @@ CmdPartDesignSubtractivePipe::CmdPartDesignSubtractivePipe()
 
 void CmdPartDesignSubtractivePipe::activated(int iMsg)
 {
+	PartDesign::Body *pcActiveBody = PartDesignGui::getBody(/*messageIfNot = */ true);
+
+	// No PartDesign feature without Body past FreeCAD 0.13
+	if (!pcActiveBody)
+		return;
+
     Gui::Command* cmd = this;
     auto worker = [cmd](Part::Feature* sketch, std::string FeatName) {
 
@@ -1122,6 +1165,12 @@ CmdPartDesignAdditiveLoft::CmdPartDesignAdditiveLoft()
 
 void CmdPartDesignAdditiveLoft::activated(int iMsg)
 {
+	PartDesign::Body *pcActiveBody = PartDesignGui::getBody(/*messageIfNot = */ true);
+
+	// No PartDesign feature without Body past FreeCAD 0.13
+	if (!pcActiveBody)
+		return;
+
     Gui::Command* cmd = this;
     auto worker = [cmd](Part::Feature* sketch, std::string FeatName) {
 
@@ -1162,6 +1211,12 @@ CmdPartDesignSubtractiveLoft::CmdPartDesignSubtractiveLoft()
 
 void CmdPartDesignSubtractiveLoft::activated(int iMsg)
 {
+	PartDesign::Body *pcActiveBody = PartDesignGui::getBody(/*messageIfNot = */ true);
+	
+	// No PartDesign feature without Body past FreeCAD 0.13
+	if (!pcActiveBody) 
+		return;
+
     Gui::Command* cmd = this;
     auto worker = [cmd](Part::Feature* sketch, std::string FeatName) {