Better conditioning of drawing vertical grid lines

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@9744 a592a061-630c-0410-9148-cb99ea01b6c8

src/mathed/ChangeLog

@@ -1,4 +1,10 @@
 
+2005-03-24  Martin Vermeer  <martin.vermeer@hut.fi>
+
+	* math_hullinset.C:
+	* math_casesinset.[Ch]: more precise conditioning of
+	output of vertical grid lines
+
 2005-03-22  Martin Vermeer  <martin.vermeer@hut.fi>
 
 	* math_hullinset.C (getStatus): intercept and suppress the

src/mathed/math_casesinset.C

@@ -14,8 +14,26 @@
 #include "math_data.h"
 #include "math_mathmlstream.h"
 #include "math_support.h"
+#include "FuncStatus.h"
 #include "LaTeXFeatures.h"
 #include "support/std_ostream.h"
+#include "cursor.h"
+#include "funcrequest.h"
+#include "gettext.h"
+#include "undo.h"
+
+#include "support/lstrings.h"
+
+#include <sstream>
+
+using lyx::support::bformat;
+
+using std::endl;
+using std::max;
+using std::min;
+using std::swap;
+using std::istringstream;
+using std::string;
 
 using std::auto_ptr;
 
@@ -47,6 +65,47 @@ void MathCasesInset::draw(PainterInfo & pi, int x, int y) const
 }
 
 
+void MathCasesInset::doDispatch(LCursor & cur, FuncRequest & cmd)
+{
+	//lyxerr << "*** MathCasesInset: request: " << cmd << endl;
+	switch (cmd.action) {
+	case LFUN_TABULAR_FEATURE: {
+		recordUndo(cur);
+		istringstream is(cmd.argument);
+		string s;
+		is >> s; 
+		if (s == "add-vline-left" || s == "add-vline-right") {
+			cur.undispatched();
+			break;
+		}
+	}
+	default:
+		MathGridInset::doDispatch(cur, cmd);
+	}
+}
+
+
+bool MathCasesInset::getStatus(LCursor & cur, FuncRequest const & cmd,
+		FuncStatus & flag) const
+{
+	switch (cmd.action) {
+	case LFUN_TABULAR_FEATURE: {
+		istringstream is(cmd.argument);
+		string s;
+		is >> s;
+		if (s == "add-vline-left" || s == "add-vline-right") {
+			flag.enabled(false);
+			flag.message(bformat(
+				N_("No vertical grid lines in '%1$s'"), s));
+			return true;
+		}
+	}
+	default:
+		return MathGridInset::getStatus(cur, cmd, flag);
+	}
+}
+
+
 void MathCasesInset::write(WriteStream & os) const
 {
 	if (os.fragile())

src/mathed/math_casesinset.h

@@ -25,6 +25,11 @@ public:
 	void metrics(MetricsInfo & mi, Dimension & dim) const;
 	///
 	void draw(PainterInfo & pi, int x, int y) const;
+	///
+	virtual void doDispatch(LCursor & cur, FuncRequest & cmd);
+	///
+	bool getStatus(LCursor & cur, FuncRequest const & cmd,
+		FuncStatus & flag) const;
 
 	///
 	void infoize(std::ostream & os) const;

src/mathed/math_hullinset.C

@@ -1125,10 +1125,16 @@ bool MathHullInset::getStatus(LCursor & cur, FuncRequest const & cmd,
 		if ((type_ == "simple" 
 		  || type_ == "equation" 
 		  || type_ == "none") &&
-		    (s == "add-hline-above" || s == "add-hline-below" ||
-		     s == "add-vline-left" || s == "add-vline-right")) {
+		    (s == "add-hline-above" || s == "add-hline-below")) {
 			flag.message(bformat(
-				N_("Can't add grid lines in '%1$s'"),
+				N_("Can't add horizontal grid lines in '%1$s'"),
+				type_));
+			flag.enabled(false);
+			return true;
+		}
+		if (s == "add-vline-left" || s == "add-vline-right") { 
+			flag.message(bformat(
+				N_("Can't add vertical grid lines in '%1$s'"),
 				type_));
 			flag.enabled(false);
 			return true;