My final commit of the year? pair<bool, string> askForText

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@398 a592a061-630c-0410-9148-cb99ea01b6c8

ChangeLog

@@ -1,3 +1,14 @@
+1999-12-30  Allan Rae  <rae@lyx.org>
+
+	* lib/templates/IEEEtran.lyx: minor change
+
+	* src/lyxvc.C (registrer, checkIn), src/lyx_cb.C (MenuInsertLabel),
+	src/mathed/formula.C (LocalDispatch): askForText changes
+
+	* src/lyx_gui_misc.[Ch] (askForText): now returns a bool also so we 
+	know when a user has cancelled input. Fixes annoying problems with
+	inserting labels and version control.
+
 1999-12-28  Jean-Marc Lasgouttes  <Jean-Marc.Lasgouttes@inria.fr>
 
 	* src/buffer.C (Dispatch): remove an extraneous break statement.

lib/templates/IEEEtran.lyx

@@ -1,4 +1,4 @@
-#This file was created by <rae> Mon Dec 20 11:39:44 1999
+#This file was created by <rae> Mon Dec 20 11:59:31 1999
 #LyX 1.0 (C) 1995-1999 Matthias Ettrich and the LyX Team
 \lyxformat 2.15
 \textclass IEEEtran

src/lyx_cb.C

@@ -1244,9 +1244,13 @@ void MenuInsertLabel(char const * arg)
 {
 	string label = arg;
 	ProhibitInput();
-	//string label = fl_show_input(_("Enter new label to insert:"), "");
-	if (label.empty())
-		label = frontStrip(strip(askForText(_("Enter new label to insert:"))));
+	if (label.empty()) {
+		pair<bool, string>
+			result = askForText(_("Enter new label to insert:"));
+		if (result.first) {
+			label = frontStrip(strip(result.second));
+		}
+	}
 	if (!label.empty()) {
 		InsetLabel * new_inset = new InsetLabel;
 		new_inset->setContents(label);

src/lyx_gui_misc.C

@@ -400,7 +400,7 @@ int AskConfirmation(string const & s1, string const & s2, string const & s3)
 
 
 // Asks for a text
-string askForText(string const & msg, string const & dflt)
+pair<bool, string> askForText(string const & msg, string const & dflt)
 {
 	char const * tmp;
 	fl_set_resource("flInput.cancel.label", idex(_("Cancel|^[")));
@@ -408,9 +408,9 @@ string askForText(string const & msg, string const & dflt)
 	fl_set_resource("flInput.clear.label", idex(_("Clear|#e")));
 	tmp = fl_show_input(msg.c_str(), dflt.c_str());
 	if (tmp != 0)
-	  return tmp;
+	  return make_pair<bool, string>(true, tmp);
 	else
-	  return string();
+	  return make_pair<bool, string>(false, string());
 }
 
 

src/lyx_gui_misc.h

@@ -16,6 +16,7 @@
 
 #include FORMS_H_LOCATION
 #include "LString.h"
+#include <utility>  /* needed for pair<> definition */
 
 /// Prevents LyX from being killed when the close box is pressed in a popup.
 extern "C" int CancelCloseBoxCB(FL_FORM *, void *);
@@ -53,8 +54,9 @@ bool AskQuestion(string const & s1, string const & s2 = string(),
 int AskConfirmation(string const & s1, string const & s2 = string(), 
 		    string const & s3 = string());
 
-/// returns a text
-string askForText(string const & msg, string const & dflt = string());
+/// returns a bool: false=cancelled, true=okay. string contains returned text
+pair<bool, string> askForText(string const & msg,
+			      string const & dflt = string());
 
 /// Informs the user that changes in the coming form will be ignored
 void WarnReadonly(string const & file);

src/lyxvc.C

@@ -98,15 +98,17 @@ void LyXVC::registrer()
 	}
 
 	lyxerr[Debug::LYXVC] << "LyXVC: registrer" << endl;
-	string tmp = askForText(_("LyX VC: Initial description"),
+	pair<bool, string> tmp = askForText(_("LyX VC: Initial description"),
 					    _("(no initial description)"));
-	if (tmp.empty()) {
+	if (!tmp.first || tmp.second.empty()) {
+		// should we insist on checking tmp.second.empty()?
 		lyxerr[Debug::LYXVC] << "LyXVC: user cancelled" << endl;
-		WriteAlert(_("Info"), _("This document has NOT been registered."));
+		WriteAlert(_("Info"),
+			   _("This document has NOT been registered."));
 		return;
 	}
 	
-	vcs->registrer(tmp);
+	vcs->registrer(tmp.second);
 }
 
 
@@ -128,11 +130,15 @@ void LyXVC::checkIn()
 	}
 
 	lyxerr[Debug::LYXVC] << "LyXVC: checkIn" << endl;
-	string tmp = askForText(_("LyX VC: Log Message"));
-	if (tmp.empty()) tmp = "(no log msg)";
-
-	vcs->checkIn(tmp);
-	
+	pair<bool, string> tmp = askForText(_("LyX VC: Log Message"));
+	if (tmp.first) {
+		if (tmp.second.empty()) {
+			tmp.second = _("(no log message)");
+		}
+		vcs->checkIn(tmp.second);
+	} else {
+		lyxerr[Debug::LYXVC] << "LyXVC: user cancelled" << endl;
+	}
 }
 
 

src/mathed/formula.C

@@ -1046,8 +1046,13 @@ bool InsetFormula::LocalDispatch(int action, char const * arg)
        LockedInsetStoreUndo(Undo::INSERT);
        if (par->GetType() < LM_OT_PAR) break;
        string lb = arg;
-       if (lb.empty())
-	      lb = string(askForText(_("Enter new label to insert:")));
+       if (lb.empty()) {
+	  pair<bool, string>
+		result = askForText(_("Enter new label to insert:"));
+	  if (result.first) {
+	     lb = result.second;
+	  }
+       }
        if (!lb.empty() && lb[0] > ' ') {
 	  SetNumber(true);
 	  if (par->GetType() == LM_OT_MPARN) {