To finish up #6854, also add AllowedOccurrences

Again very basic for now (this only considers the current paragraph,
not the whole inset or a serious of grouped layouts

lib/doc/Customization.lyx

@@ -20957,6 +20957,8 @@ status collapsed
 
 \change_inserted -712698321 1690284277
 AllowedInInsets
+\change_unchanged
+
 \end_layout
 
 \end_inset
@@ -20974,6 +20976,8 @@ status collapsed
 
 \change_inserted -712698321 1690284318
 EndAllowedInInsets
+\change_unchanged
+
 \end_layout
 
 \end_inset
@@ -21013,6 +21017,8 @@ status collapsed
 
 \change_inserted -712698321 1690284329
 AllowedInLayouts
+\change_unchanged
+
 \end_layout
 
 \end_inset
@@ -21022,7 +21028,7 @@ AllowedInLayouts
 
 \begin_layout Description
 
-\change_inserted -712698321 1690284561
+\change_inserted -712698321 1690292495
 \begin_inset Flex Code
 status collapsed
 
@@ -21030,6 +21036,8 @@ status collapsed
 
 \change_inserted -712698321 1690284338
 AllowedInLayouts
+\change_unchanged
+
 \end_layout
 
 \end_inset
@@ -21047,6 +21055,8 @@ status collapsed
 
 \change_inserted -712698321 1690284353
 EndAllowedInLayouts
+\change_unchanged
+
 \end_layout
 
 \end_inset
@@ -21065,11 +21075,67 @@ status collapsed
 
 \change_inserted -712698321 1690284358
 AllowedInInsets
+\change_unchanged
+
 \end_layout
 
 \end_inset
 
 .
+\end_layout
+
+\begin_layout Description
+
+\change_inserted -712698321 1690292676
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+
+\change_inserted -712698321 1690292501
+AllowedOccurrences
+\end_layout
+
+\end_inset
+
+ [
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+
+\change_inserted -712698321 1690292507
+int
+\end_layout
+
+\end_inset
+
+] If 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+
+\change_inserted -712698321 1690292530
+AllowedInInsets
+\end_layout
+
+\end_inset
+
+ or 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+
+\change_inserted -712698321 1690292536
+AllowedInLayouts
+\end_layout
+
+\end_inset
+
+ has been defined,
+ this can be used to determine how many times the inset can be inserted to a given paragraph.
 \change_unchanged
 
 \end_layout

lib/doc/de/Customization.lyx

@@ -17395,6 +17395,50 @@ AllowedInInsets
 \begin_inset Flex Code
 status collapsed
 
+\begin_layout Plain Layout
+AllowedOccurrences
+\end_layout
+
+\end_inset
+
+ [
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+int
+\end_layout
+
+\end_inset
+
+] Falls 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+AllowedInInsets
+\end_layout
+
+\end_inset
+
+ oder 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+AllowedInLayouts
+\end_layout
+
+\end_inset
+
+ definiert wurde,
+ kann hiermit eine maximale Anzahl von Einfügungen pro Absatz festgelegt werden.
+\end_layout
+
+\begin_layout Description
+\begin_inset Flex Code
+status collapsed
+
 \begin_layout Plain Layout
 Argument
 \end_layout

lib/layouts/acmart.layout

@@ -250,6 +250,7 @@ InsetLayout Flex:Department
   AllowedInLayouts
     Affiliation
   EndAllowedInLayouts
+  AllowedOccurrences   1
 End
 
 InsetLayout Flex:Street_Address
@@ -261,6 +262,7 @@ InsetLayout Flex:Street_Address
   AllowedInLayouts
     Affiliation
   EndAllowedInLayouts
+  AllowedOccurrences   1
 End
 
 InsetLayout Flex:City
@@ -272,6 +274,7 @@ InsetLayout Flex:City
   AllowedInLayouts
     Affiliation
   EndAllowedInLayouts
+  AllowedOccurrences   1
 End
 
 InsetLayout Flex:Country
@@ -283,6 +286,7 @@ InsetLayout Flex:Country
   AllowedInLayouts
     Affiliation
   EndAllowedInLayouts
+  AllowedOccurrences   1
 End
 
 InsetLayout Flex:State
@@ -294,6 +298,7 @@ InsetLayout Flex:State
   AllowedInLayouts
     Affiliation
   EndAllowedInLayouts
+  AllowedOccurrences   1
 End
 
 InsetLayout Flex:Postal_Code
@@ -305,6 +310,7 @@ InsetLayout Flex:Postal_Code
   AllowedInLayouts
     Affiliation
   EndAllowedInLayouts
+  AllowedOccurrences   1
 End
 
 Style TitleNote

lib/layouts/linguistics.module

@@ -157,6 +157,7 @@ InsetLayout Flex:Example_Preamble
 	AllowedInLayouts
 	    Numbered_Example_(multiline), Numbered_Examples_(consecutive)
 	EndAllowedInLayouts
+	AllowedOccurrences   1
 End
 
 InsetLayout Flex:Subexample_Preamble

lib/scripts/layout2layout.py

@@ -342,7 +342,7 @@ currentFormat = 102
 
 # Incremented to format 102, 25 July 2023 by spitz
 # add InsetLayout tags AllowedInInsets, EndAllowedInInsets,
-# AllowedInLayouts, EndAllowedInLayouts
+# AllowedInLayouts, EndAllowedInLayouts, AllowedOccurrences
 
 # Do not forget to document format change in Customization
 # Manual (section "Declaring a new text class").

src/Paragraph.cpp

@@ -2344,21 +2344,34 @@ bool Paragraph::allowedInContext(Cursor const & cur, InsetLayout const & il) con
 	set<docstring> const & allowed_insets = il.allowedInInsets();
 	set<docstring> const & allowed_layouts = il.allowedInLayouts();
 
+	bool result = false;
 	if (allowed_insets.find(inInset().getLayout().name()) != allowed_insets.end())
-		return true;
+		result = true;
 
-	if (allowed_layouts.find(d->layout_->name()) != allowed_layouts.end())
+	else if (allowed_layouts.find(d->layout_->name()) != allowed_layouts.end())
-		return true;
+		result = true;
 
-	if (inInset().asInsetArgument()) {
+	else if (inInset().asInsetArgument()) {
 		// check if the argument allows the inset in question
 		if (cur.depth() > 1) {
 			docstring parlayout = cur[cur.depth() - 2].inset().getLayout().name()
 					+ from_ascii("@") + from_ascii(inInset().asInsetArgument()->name());
 			if (allowed_insets.find(parlayout) != allowed_insets.end())
-				return true;
+				result = true;
 		}
 	}
+	
+	if (result && il.allowedOccurrences() != -1) {
+		int have_ins = 0;
+		for (auto const & table : insetList())
+			if (table.inset->getLayout().name() == il.name())
+				++have_ins;
+		if (have_ins >= il.allowedOccurrences())
+			return false;
+	}
+	
+	if (result)
+		return true;
 
 	return (allowed_insets.empty() && allowed_layouts.empty());
 }

src/TextClass.cpp

@@ -59,7 +59,7 @@ namespace lyx {
 // You should also run the development/tools/updatelayouts.py script,
 // to update the format of all of our layout files.
 //
-int const LAYOUT_FORMAT = 102; // spitz: add AllowedInInsets and AllowedInLayouts tag
+int const LAYOUT_FORMAT = 102; // spitz: add tags AllowedInInsets, AllowedInLayouts, AllowedOccurrences
 
 
 // Layout format for the current lyx file format. Controls which format is

src/insets/InsetLayout.cpp

@@ -66,6 +66,7 @@ bool InsetLayout::read(Lexer & lex, TextClass const & tclass,
 		IL_ADDTOTOC,
 		IL_ALLOWED_IN_INSET,
 		IL_ALLOWED_IN_LAYOUT,
+		IL_ALLOWED_OCCURRENCES,
 		IL_ARGUMENT,
 		IL_BABELPREAMBLE,
 		IL_BGCOLOR,
@@ -153,6 +154,7 @@ bool InsetLayout::read(Lexer & lex, TextClass const & tclass,
 		{ "addtotoc", IL_ADDTOTOC },
 		{ "allowedininsets", IL_ALLOWED_IN_INSET },
 		{ "allowedinlayouts", IL_ALLOWED_IN_LAYOUT },
+		{ "allowedoccurrences", IL_ALLOWED_OCCURRENCES },
 		{ "argument", IL_ARGUMENT },
 		{ "babelpreamble", IL_BABELPREAMBLE },
 		{ "bgcolor", IL_BGCOLOR },
@@ -651,6 +653,9 @@ bool InsetLayout::read(Lexer & lex, TextClass const & tclass,
 			allowed_in_layouts_.insert(allowances.begin(), allowances.end());
 			break;
 		}
+		case IL_ALLOWED_OCCURRENCES:
+			lex >> allowed_occurrences_;
+			break;
 		case IL_END:
 			getout = true;
 			break;

src/insets/InsetLayout.h

@@ -256,6 +256,8 @@ public:
 	std::set<docstring> const & allowedInInsets() const { return allowed_in_insets_; }
 	///
 	std::set<docstring> const & allowedInLayouts() const { return allowed_in_layouts_; }
+	///
+	int allowedOccurrences() const { return allowed_occurrences_; }
 private:
 	///
 	void makeDefaultCSS() const;
@@ -443,6 +445,8 @@ private:
 	std::set<docstring> allowed_in_insets_;
 	/// Layouts that can hold insets with this InsetLayout
 	std::set<docstring> allowed_in_layouts_;
+	///
+	int allowed_occurrences_ = -1;
 };
 
 ///