toggleReadOnly belongs only to RCS, not CVS.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@25787 a592a061-630c-0410-9148-cb99ea01b6c8

src/LyXVC.cpp

@@ -188,6 +188,9 @@ void LyXVC::undoLast()
 
 void LyXVC::toggleReadOnly()
 {
+	if (!vcs->toggleReadOnlyEnabled())
+		return;
+
 	switch (vcs->status()) {
 	case VCS::UNLOCKED:
 		LYXERR(Debug::LYXVC, "LyXVC: toggle to locked");

src/VCBackend.cpp

@@ -223,6 +223,12 @@ void RCS::getLog(FileName const & tmpf)
 }
 
 
+bool RCS::toggleReadOnlyEnabled()
+{
+	return true;
+}
+
+
 /////////////////////////////////////////////////////////////////////
 //
 // CVS
@@ -381,6 +387,10 @@ void CVS::getLog(FileName const & tmpf)
 		    FileName(owner_->filePath()));
 }
 
+bool CVS::toggleReadOnlyEnabled()
+{
+	return false;
+}
 
 /////////////////////////////////////////////////////////////////////
 //
@@ -454,9 +464,6 @@ bool SVN::checkInEnabled()
 
 void SVN::checkOut()
 {
-	// svn update or perhaps for svn this should be a noop
-	// we need to detect conflict (eg "C" in output)
-	// before we can do this.
 	lyxerr << "Sorry not implemented." << endl;
 }
 
@@ -502,5 +509,10 @@ void SVN::getLog(FileName const & tmpf)
 }
 
 
+bool SVN::toggleReadOnlyEnabled()
+{
+	return false;
+}
+
 
 } // namespace lyx

src/VCBackend.h

@@ -65,6 +65,8 @@ public:
 	Buffer * owner() const { return owner_; }
 	/// return the lock status of this file
 	VCStatus status() const { return vcstatus; }
+	/// do we need special handling for read-only toggling?
+	virtual bool toggleReadOnlyEnabled() = 0;
 protected:
 	/// parse information from the version file
 	virtual void scanMaster() = 0;
@@ -133,6 +135,8 @@ public:
 		return "RCS: " + version_;
 	}
 
+	virtual bool toggleReadOnlyEnabled();
+
 protected:
 	virtual void scanMaster();
 };
@@ -170,6 +174,8 @@ public:
 		return "CVS: " + version_;
 	}
 
+	virtual bool toggleReadOnlyEnabled();
+
 protected:
 	virtual void scanMaster();
 
@@ -210,6 +216,8 @@ public:
 		return "SVN: " + version_;
 	}
 
+	virtual bool toggleReadOnlyEnabled();
+
 protected:
 	virtual void scanMaster();