start menu folder selection: works in silent mode; handles empty input

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@2645 212acab6-be3b-0410-9dea-997c60f758d6

Contrib/Modern UI/System.nsh

@@ -419,6 +419,27 @@
   
     StrCpy ${MUI_TEMP1} ${MUI_STARTMENUPAGE_VARIABLE} 1
     StrCmp ${MUI_TEMP1} ">" mui.startmenu_write_done
+    
+    StrCmp ${MUI_STARTMENUPAGE_VARIABLE} "" 0 mui.startmenu_writebegin_notempty
+
+    !ifdef MUI_STARTMENUPAGE_REGISTRY_ROOT & MUI_STARTMENUPAGE_REGISTRY_KEY & MUI_STARTMENUPAGE_REGISTRY_VALUENAME
+      
+      StrCmp "${MUI_STARTMENUPAGE_VARIABLE}" "" 0 +6
+
+        ReadRegStr ${MUI_TEMP1} "${MUI_STARTMENUPAGE_REGISTRY_ROOT}" "${MUI_STARTMENUPAGE_REGISTRY_KEY}" "${MUI_STARTMENUPAGE_REGISTRY_VALUENAME}"
+          StrCmp ${MUI_TEMP1} "" +3
+            StrCpy "${MUI_STARTMENUPAGE_VARIABLE}" ${MUI_TEMP1}
+            Goto +2
+          
+          StrCpy "${MUI_STARTMENUPAGE_VARIABLE}" "${MUI_STARTMENUPAGE_DEFAULTFOLDER}"
+
+    !else
+    
+      StrCpy "${MUI_STARTMENUPAGE_VARIABLE}" "${MUI_STARTMENUPAGE_DEFAULTFOLDER}"
+      
+    !endif
+    
+    mui.startmenu_writebegin_notempty:
 
   Pop ${MUI_TEMP1}
   
@@ -862,6 +883,19 @@
 
 !macroend
 
+!macro MUI_STARTMENU_INITDEFINES
+
+  ;Check defines
+  !ifndef MUI_STARTMENUPAGE_VARIABLE
+    !define MUI_STARTMENUPAGE_VARIABLE "$9"
+  !endif
+  
+  !ifndef MUI_STARTMENUPAGE_DEFAULTFOLDER
+    !define MUI_STARTMENUPAGE_DEFAULTFOLDER "${MUI_PRODUCT}"
+  !endif
+
+!macroend
+
 ;--------------------------------
 ;FUNCTIONS
 
@@ -1048,14 +1082,6 @@
 
 !macro MUI_FUNCTIONS_STARTMENUPAGE FUNCTION
   
-  ;Check defines
-  !ifndef MUI_STARTMENUPAGE_VARIABLE
-    !define MUI_STARTMENUPAGE_VARIABLE "$9"
-  !endif
-  !ifndef MUI_STARTMENUPAGE_DEFAULTFOLDER
-    !define MUI_STARTMENUPAGE_DEFAULTFOLDER "${MUI_PRODUCT}"
-  !endif
-  
   Function "${FUNCTION}"
   
   !ifdef MUI_CUSTOMFUNCTION_STARTMENU_PRE
@@ -1063,19 +1089,19 @@
   !endif
 
   Push ${MUI_TEMP1}
+
+    !ifdef MUI_STARTMENUPAGE_REGISTRY_ROOT & MUI_STARTMENUPAGE_REGISTRY_KEY & MUI_STARTMENUPAGE_REGISTRY_VALUENAME
+  
+      StrCmp "${MUI_STARTMENUPAGE_VARIABLE}" "" 0 +4
+
+      ReadRegStr ${MUI_TEMP1} "${MUI_STARTMENUPAGE_REGISTRY_ROOT}" "${MUI_STARTMENUPAGE_REGISTRY_KEY}" "${MUI_STARTMENUPAGE_REGISTRY_VALUENAME}"
+        StrCmp ${MUI_TEMP1} "" +2
+        StrCpy "${MUI_STARTMENUPAGE_VARIABLE}" ${MUI_TEMP1}
+    
+    !endif
   
     !insertmacro MUI_HEADER_TEXT $(MUI_TEXT_STARTMENU_TITLE) $(MUI_TEXT_STARTMENU_SUBTITLE)
     
-    !ifdef MUI_STARTMENUPAGE_REGISTRY_ROOT & MUI_STARTMENUPAGE_REGISTRY_KEY & MUI_STARTMENUPAGE_REGISTRY_VALUENAME
-      
-      StrCmp "${MUI_STARTMENUPAGE_VARIABLE}" "" "" +4
-
-        ReadRegStr ${MUI_TEMP1} "${MUI_STARTMENUPAGE_REGISTRY_ROOT}" "${MUI_STARTMENUPAGE_REGISTRY_KEY}" "${MUI_STARTMENUPAGE_REGISTRY_VALUENAME}"
-        StrCmp ${MUI_TEMP1} "" +2
-        StrCpy "${MUI_STARTMENUPAGE_VARIABLE}" ${MUI_TEMP1}
-
-    !endif
-
     !ifndef MUI_STARTMENUPAGE_NODISABLE
       StartMenu::Select /noicon /autoadd /text "$(MUI_INNERTEXT_STARTMENU_TOP)" /lastused "${MUI_STARTMENUPAGE_VARIABLE}" /checknoshortcuts "$(MUI_INNERTEXT_STARTMENU_CHECKBOX)" "${MUI_STARTMENUPAGE_DEFAULTFOLDER}"
     !else
@@ -1578,8 +1604,12 @@
     !define MUI_MANUALVERBOSE_SET
     !define MUI_MANUALVERBOSE
   !endif
+
+  !ifdef MUI_STARTMENUPAGE
+    !insertmacro MUI_STARTMENU_INITDEFINES
+  !endif
   
-  !insertmacro MUI_INTERFACE  
+  !insertmacro MUI_INTERFACE
    
   !insertmacro MUI_FUNCTIONS_PAGES
   !insertmacro MUI_FUNCTIONS_GUIINIT