new feature: allow searching in help, lyrics and info screens

src/ncmpcpp.cpp

@@ -1596,9 +1596,8 @@ int main(int argc, char *argv[])
 		{
 			List *mList = myScreen->GetList();
 			
-			if (!mList)
-				continue;
-			
+			if (mList)
+			{
 				LockStatusbar();
 				Statusbar() << "Find " << (Keypressed(input, Key.FindForward) ? "forward" : "backward") << ": ";
 				string findme = wFooter->GetString(mList->GetSearchConstraint());
@@ -1623,6 +1622,21 @@ int main(int argc, char *argv[])
 				if (myScreen == myPlaylist)
 					myPlaylist->EnableHighlighting();
 			}
+			else if (myScreen == myHelp || myScreen == myLyrics || myScreen == myInfo)
+			{
+				LockStatusbar();
+				Statusbar() << "Find: ";
+				string findme = wFooter->GetString();
+				UnlockStatusbar();
+				
+				ShowMessage("Searching...");
+				Screen<Scrollpad> *s = static_cast<Screen<Scrollpad> *>(myScreen);
+				s->Main()->RemoveFormatting(fmtReverse);
+				s->Main()->RemoveFormatting(fmtReverseEnd);
+				ShowMessage("%s", s->Main()->SetFormatting(fmtReverse, findme, fmtReverseEnd) || findme.empty() ? "Done!" : "No matching patterns found");
+				s->Main()->Flush();
+			}
+		}
 		else if (Keypressed(input, Key.NextFoundPosition) || Keypressed(input, Key.PrevFoundPosition))
 		{
 			List *mList = myScreen->GetList();

src/scrollpad.cpp

@@ -100,9 +100,9 @@ void Scrollpad::Flush()
 	itsBuffer.SetTemp(0);
 }
 
-void Scrollpad::SetFormatting(short vb, const std::basic_string<my_char_t> &s, short ve, bool for_each)
+bool Scrollpad::SetFormatting(short vb, const std::basic_string<my_char_t> &s, short ve, bool for_each)
 {
-	itsBuffer.SetFormatting(vb, s, ve, for_each);
+	return itsBuffer.SetFormatting(vb, s, ve, for_each);
 }
 
 void Scrollpad::Recreate()

src/scrollpad.h

@@ -34,7 +34,8 @@ namespace NCurses
 			virtual ~Scrollpad() { }
 			
 			void Flush();
-			void SetFormatting(short, const std::basic_string<my_char_t> &, short, bool for_each = 1);
+			bool SetFormatting(short, const std::basic_string<my_char_t> &, short, bool for_each = 1);
+			void RemoveFormatting(short value) { itsBuffer.RemoveFormatting(value); }
 			std::basic_string<my_char_t> Content() { return itsBuffer.Str(); }
 			
 			virtual void Refresh();
@@ -52,7 +53,7 @@ namespace NCurses
 			Scrollpad &operator<<(std::ostream &(*os)(std::ostream &));
 			
 #			ifdef _UTF8
-			void SetFormatting(short vb, const std::string &s, short ve, bool for_each = 1) { SetFormatting(vb, ToWString(s), ve, for_each); }
+			bool SetFormatting(short vb, const std::string &s, short ve, bool for_each = 1) { return SetFormatting(vb, ToWString(s), ve, for_each); }
 			Scrollpad &operator<<(const std::string &s);
 #			endif // _UTF8
 			

src/strbuffer.h

@@ -39,6 +39,19 @@ namespace NCurses
 			{
 				return Position < f.Position;
 			}
+			
+			struct hasValue
+			{
+				hasValue(short value) : itsValue(value) { }
+				
+				bool operator()(const FormatPos &fp)
+				{
+					return fp.Value == itsValue;
+				}
+				
+				private:
+					short itsValue;
+			};
 		};
 		
 		std::basic_ostringstream<C> itsString;
@@ -50,7 +63,8 @@ namespace NCurses
 			basic_buffer(const basic_buffer &b);
 			
 			std::basic_string<C> Str() const;
-			void SetFormatting(short vb, const std::basic_string<C> &s, short ve, bool for_each = 1);
+			bool SetFormatting(short vb, const std::basic_string<C> &s, short ve, bool for_each = 1);
+			void RemoveFormatting(short value);
 			void SetTemp(std::basic_string<C> *);
 			void Clear();
 			
@@ -83,23 +97,34 @@ template <typename C> std::basic_string<C> NCurses::basic_buffer<C>::Str() const
 	return itsString.str();
 }
 
-template <typename C> void NCurses::basic_buffer<C>::SetFormatting(short vb, const std::basic_string<C> &s, short ve, bool for_each)
+template <typename C> bool NCurses::basic_buffer<C>::SetFormatting(short vb, const std::basic_string<C> &s, short ve, bool for_each)
 {
+	if (s.empty())
+		return false;
+	bool result = false;
 	std::basic_string<C> base = itsString.str();
 	FormatPos fp;
 	
-	for (size_t i = base.find(s); i != std::basic_string<C>::npos; i = base.find(s))
+	for (size_t i = base.find(s); i != std::basic_string<C>::npos; i = base.find(s, i))
 	{
-		base[i] = 0;
+		result = true;
 		fp.Value = vb;
 		fp.Position = i;
 		itsFormat.push_back(fp);
+		i += s.length();
 		fp.Value = ve;
-		fp.Position = i+s.length();
+		fp.Position = i;
 		itsFormat.push_back(fp);
 		if (!for_each)
 			break;
 	}
+	itsFormat.sort();
+	return result;
+}
+
+template <typename C> void NCurses::basic_buffer<C>::RemoveFormatting(short value)
+{
+	itsFormat.remove_if(typename FormatPos::hasValue(value));
 }
 
 template <typename C> void NCurses::basic_buffer<C>::SetTemp(std::basic_string<C> *tmp)