trunk/nsis/installer.nsi

; NSIS script to create an ASCEND binary installer for Windows
; by John Pye, 2006-2007.
;
;--------------------------------

; The name of the installer

!ifndef VERSION
!define VERSION 0.svn
!endif

Name "ASCEND ${VERSION}"

;SetCompressor /FINAL zlib
SetCompressor /SOLID lzma

!include LogicLib.nsh
!include nsDialogs.nsh

!ifndef PYVERSION
!define PYVERSION "2.6"
!endif

!ifndef PYPATCH
!define PYPATCH ".1"
!endif

; The file to write
!ifdef OUTFILE
OutFile ${OUTFILE}
!else
OutFile "ascend-${VERSION}-py${PYVERSION}.exe"
!endif


; The default installation directory
InstallDir $PROGRAMFILES\ASCEND

; Registry key to check for directory (so if you install again, it will 
; overwrite the old one automatically)
InstallDirRegKey HKLM "Software\ASCEND" "Install_Dir"

;--------------------------------

; Pages

Page license
LicenseData "..\LICENSE.txt"

Page components
Page directory
Page custom dependenciesCreate dependenciesLeave
Page instfiles
Page custom ascendIniCreate ascendIniLeave

UninstPage uninstConfirm
UninstPage instfiles

;--------------------------------

Var /GLOBAL DEFAULTPATH
Var /GLOBAL PYOK
Var /GLOBAL PYPATH
Var /GLOBAL GTKOK
Var /GLOBAL GTKPATH
Var /GLOBAL GLADEOK
Var /GLOBAL PYGTKOK
Var /GLOBAL PYGOBJECTOK
Var /GLOBAL PYCAIROOK
Var /GLOBAL GLADEPATH
Var /GLOBAL PYINSTALLED
Var /GLOBAL TCLOK
Var /GLOBAL TCLPATH
Var /GLOBAL TCLINSTALLED

Var /GLOBAL PDFINSTALLED

Var /GLOBAL PATH

Var /GLOBAL PYDOWNLOAD
Var /GLOBAL PYGTKDOWNLOAD
Var /GLOBAL PYGOBJECTDOWNLOAD
Var /GLOBAL PYCAIRODOWNLOAD
Var /GLOBAL GTKDOWNLOAD
Var /GLOBAL TCLDOWNLOAD

Var /GLOBAL ASCENDINIFOUND

; .onInit has been moved to after section decls so that they can be references

;------------------------------------------------------------
; DOWNLOAD AND INSTALL DEPENDENCIES FIRST

!define PYTHON_VERSION "${PYVERSION}${PYPATCH}"
!define PYTHON_FN "python-${PYTHON_VERSION}.msi"
!define PYTHON_URL "http://www.python.org/ftp/python/${PYTHON_VERSION}/${PYTHON_FN}"
!define PYTHON_CMD "msiexec /i $DAI_TMPFILE /passive"

!define GTK_FN "glade3-3.6.7-with-GTK+.exe"
!define GTK_URL "http://ftp.gnome.org/pub/GNOME/binaries/win32/glade3/3.6/${GTK_FN}"
!define GTK_CMD "$DAI_TMPFILE"

!define PYGOBJECT_VER "2.14"
!define PYGOBJECT_FN "pygobject-${PYGOBJECT_VER}.2-2.win32-py${PYVERSION}.exe"
!define PYGOBJECT_URL "http://ftp.gnome.org/pub/GNOME/binaries/win32/pygobject/${PYGOBJECT_VER}/${PYGOBJECT_FN}"
!define PYGOBJECT_CMD "$DAI_TMPFILE"

!define PYCAIRO_VER "1.4"
!define PYCAIRO_FN "pycairo-${PYCAIRO_VER}.12-2.win32-py${PYVERSION}.exe"
!define PYCAIRO_URL "http://ftp.gnome.org/pub/GNOME/binaries/win32/pycairo/${PYCAIRO_VER}/${PYCAIRO_FN}"
!define PYCAIRO_CMD "$DAI_TMPFILE"

!define PYGTK_VER "2.12"
!define PYGTK_FN "pygtk-${PYGTK_VER}.1-3.win32-py${PYVERSION}.exe"
!define PYGTK_URL "http://ftp.gnome.org/pub/GNOME/binaries/win32/pygtk/${PYGTK_VER}/${PYGTK_FN}"
!define PYGTK_CMD "$DAI_TMPFILE"

!define TCL_VERSION "8.5.8.2"
!define TCL_PATCH ".292682"
!define TCL_FN "ActiveTcl${TCL_VERSION}${TCL_PATCH}-win32-ix86-threaded.exe"
!define TCL_URL "http://downloads.activestate.com/ActiveTcl/releases/${TCL_VERSION}/${TCL_FN}"
!define TCL_CMD "$DAI_TMPFILE"
!include "download.nsi"

Section "-python"
    DetailPrint "--- DOWNLOAD PYTHON ---"
        ${If} $PYDOWNLOAD == '1'
        !insertmacro downloadAndInstall "Python" "${PYTHON_URL}" "${PYTHON_FN}" "${PYTHON_CMD}"
        Call DetectPython
        Pop $PYOK
        Pop $PYPATH
        ${If} $PYOK == 'NOK'
            MessageBox MB_OK "Python installation appears to have failed"
        ${EndIf}
        ${EndIf}
SectionEnd
Section "-gtk"
    DetailPrint "--- DOWNLOAD GTK+ ---"
    ${If} $GTKDOWNLOAD == '1'
        !insertmacro downloadAndInstall "GTK+" ${GTK_URL} ${GTK_FN} ${GTK_CMD}
        Call DetectGTK
        Pop $GTKOK
        Pop $GTKPATH
        Call DetectGlade
        Pop $GLADEOK
        Pop $GLADEPATH
        ${EndIf}
SectionEnd
Section "-pygobject"
    DetailPrint "--- DOWNLOAD PYGOBJECT ---"
        ${If} $PYGOBJECTDOWNLOAD == '1'
        ${AndIf} $PYOK == 'OK'
        !insertmacro downloadAndInstall "PyGObject" ${PYGOBJECT_URL} ${PYGOBJECT_FN} ${PYGOBJECT_CMD}
        Call DetectPyGObject
        Pop $PYGOBJECTOK
        ${EndIf}
SectionEnd
Section "-pycairo"
    DetailPrint "--- DOWNLOAD PYCAIRO ---"
        ${If} $PYCAIRODOWNLOAD == '1'
        ${AndIf} $PYOK == 'OK'
        !insertmacro downloadAndInstall "PyCairo" ${PYCAIRO_URL} ${PYCAIRO_FN} ${PYCAIRO_CMD}
        Call DetectPyCairo
        Pop $PYCAIROOK
        ${EndIf}
SectionEnd
Section "-pygtk"
    DetailPrint "--- DOWNLOAD PYGTK ---"
        ${If} $PYGTKDOWNLOAD == '1'
        ${AndIf} $PYOK == 'OK'
        !insertmacro downloadAndInstall "PyGTK" ${PYGTK_URL} ${PYGTK_FN} ${PYGTK_CMD}
        Call DetectPyGTK
        Pop $PYGTKOK

        ${EndIf}
SectionEnd
Section "-tcl"
    DetailPrint "--- DOWNLOAD TCL/TK ---"
    ${If} $TCLDOWNLOAD == '1'
        !insertmacro downloadAndInstall "Tcl/Tk" ${TCL_URL} ${TCL_FN} ${TCL_CMD}
        Call DetectTcl
        Pop $TCLOK
        Pop $TCLPATH
        ${EndIf}
SectionEnd

;------------------------------------------------------------------------
; INSTALL CORE STUFF including model library

; The stuff to install
Section "ASCEND (required)"
    SectionIn RO

    DetailPrint "--- COMMON FILES ---"

    ; Set output path to the installation directory.
    SetOutPath $INSTDIR
    File "..\ascend.dll"
    File "..\ascend-config"
    File "..\pygtk\glade\ascend.ico"
    File "..\LICENSE.txt"
    File "..\CHANGELOG.txt"
    File "..\README-windows.txt"
    File "${IPOPTDLL}"
    
    ; Model Library
    SetOutPath $INSTDIR\models
    File /r /x .svn "..\models\*.a4*"
    File /r /x .svn "..\models\*.tcl"
    File /r /x .svn "..\models\*_ascend.dll" ; extension modules
    File /r /x .svn "..\models\*.py"; python modules
    
    SetOutPath $INSTDIR\solvers
    File "..\solvers\qrslv\qrslv_ascend.dll"
    File "..\solvers\conopt\conopt_ascend.dll"
    File "..\solvers\lrslv\lrslv_ascend.dll"
    File "..\solvers\cmslv\cmslv_ascend.dll"
    File "..\solvers\lsode\lsode_ascend.dll"
    File "..\solvers\ida\ida_ascend.dll"
    File "..\solvers\dopri5\dopri5_ascend.dll"
    File "..\solvers\ipopt\ipopt_ascend.dll"
    
    SetOutPath $INSTDIR
    ;File "Makefile.bt"
    File "..\tools\textpad\ascend.syn"

    ${If} ${FileExists} "$APPDATA\.ascend.ini"
        StrCpy $ASCENDINIFOUND "1"
    ${Else}
        ; Set 'librarypath' in .ascend.ini
        WriteINIstr $APPDATA\.ascend.ini Directories librarypath "$DOCUMENTS\ascdata;$INSTDIR\models"
    ${EndIf}

    ; Write the installation path into the registry
    WriteRegStr HKLM SOFTWARE\ASCEND "Install_Dir" "$INSTDIR"

    ; Write the uninstall keys for Windows
    WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\ASCEND" "DisplayName" "ASCEND Simulation Environment"
    WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\ASCEND" "UninstallString" '"$INSTDIR\uninstall.exe"'
    WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\ASCEND" "NoModify" 1
    WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\ASCEND" "NoRepair" 1
    WriteUninstaller "uninstall.exe"

    ; Write file locations to the registry for access from ascend-config
    WriteRegStr HKLM SOFTWARE\ASCEND "INSTALL_LIB" "$INSTDIR"
    WriteRegStr HKLM SOFTWARE\ASCEND "INSTALL_BIN" "$INSTDIR"
    WriteRegStr HKLM SOFTWARE\ASCEND "INSTALL_INCLUDE" "$INSTDIR\include"
    WriteRegStr HKLM SOFTWARE\ASCEND "INSTALL_ASCDATA" "$INSTDIR"
    WriteRegStr HKLM SOFTWARE\ASCEND "INSTALL_MODELS" "$INSTDIR\models"
    WriteRegStr HKLM SOFTWARE\ASCEND "INSTALL_SOLVERS" "$INSTDIR\solvers"
    WriteRegStr HKLM SOFTWARE\ASCEND "GTKLIBS" "$GTKPATH"
    
    ; Write default values of ASCENDLIBRARY and ASCENDSOLVERS (user can override with env vars)
    WriteRegStr HKLM SOFTWARE\ASCEND "ASCENDLIBRARY" "$INSTDIR\models"
    WriteRegStr HKLM SOFTWARE\ASCEND "ASCENDSOLVERS" "$INSTDIR\solvers"
        
    Return
SectionEnd

;--------------------------------

Section "PyGTK GUI" sect_pygtk
    ; Check the dependencies of the PyGTK GUI before proceding...
    ${If} $PYOK == 'NOK'
        MessageBox MB_OK "PyGTK GUI can not be installed, because Python was not found on this system.$\nIf you do want to use the PyGTK GUI, please check the installation instructions$\n$\n(PYPATH=$PYPATH)"
    ${ElseIf} $GTKOK == 'NOK'
        MessageBox MB_OK "PyGTK GUI cannot be installed, because GTK+ 2.x was not found on this system.$\nIf you do want to use the PyGTK GUI, please check the installation instructions$\n$\n(GTKPATH=$GTKPATH)"
    ${ElseIf} $GLADEOK == 'NOK'
        MessageBox MB_OK "PyGTK GUI cannot be installed, because Glade 2.x was not found on this system.$\nIf you do want to use the PyGTK GUI, please check the installation instructions$\n$\n(GTKPATH=$GTKPATH).\n\nIf you do have GTK+ runtime installed, make sure\nyou have a version that includes support for Glade."
    ${ElseIf} $PYGTKOK == "NOK"
        MessageBox MB_OK "PyGTK GUI cannot be installed, because PyGTK was not found on this system.$\nPlease check the installation instructions.$\n$\n(PYPATH=$PYPATH)"
    ${ElseIf} $PYCAIROOK == "NOK"
        MessageBox MB_OK "PyGTK GUI cannot be installed, because PyCairo was not found on this system.$\nPlease check the installation instructions.$\n$\n(PYPATH=$PYPATH)"
    ${ElseIf} $PYGOBJECTOK == "NOK"
        MessageBox MB_OK "PyGTK GUI cannot be installed, because PyGObject was not found on this system.$\nPlease check the installation instructions.$\n$\n(PYPATH=$PYPATH)"
    ${Else}
        ;MessageBox MB_OK "Python: $PYPATH, GTK: $GTKPATH"

        DetailPrint "--- PYTHON INTERFACE ---"

        ; File icon
        SetOutPath $INSTDIR
        File "..\pygtk\glade\ascend-doc.ico"
        File "..\pygtk\ascend"      

        ; Python interface
        SetOutPath $INSTDIR\python
        File "..\pygtk\_ascpy.pyd"
        File "..\pygtk\*.py"
        
        ; GLADE assets
        SetOutPath $INSTDIR\glade
        File "..\pygtk\glade\*.glade"
        File "..\pygtk\glade\*.png"
        File "..\pygtk\glade\*.svg"

        StrCpy $PYINSTALLED "1"
        WriteRegDWORD HKLM "SOFTWARE\ASCEND" "Python" 1 

        ; Create 'ascend.bat' batch file for launching the PyGTK GUI.
        ClearErrors
        FileOpen $0 $INSTDIR\ascend.bat w
        ${If} ${Errors}
            MessageBox MB_OK "The 'ascend.bat' file was not installed properly; problems writing to that file." 
        ${Else}
            FileWrite $0 "@echo off"
            FileWriteByte $0 "13"
            FileWriteByte $0 "10"
            FileWrite $0 "set PATH=$PATH"
            FileWriteByte $0 "13"
            FileWriteByte $0 "10"
            FileWrite $0 "cd "
            FileWrite $0 $INSTDIR 
            FileWriteByte $0 "13"
            FileWriteByte $0 "10"
            FileWrite $0 "$PYPATH\python "
            FileWriteByte $0 "34" 
            FileWrite $0 "$INSTDIR\ascend"
            FileWriteByte $0 "34"
            FileWrite $0 " %1 %2 %3 %4 %5 %6 %7 %8"
            FileWriteByte $0 "13"
            FileWriteByte $0 "10"
            FileClose $0
        ${EndIf}

        ;---- file association ----

        ; back up old value of .a4c file association
        ReadRegStr $1 HKCR ".a4c" ""
        StrCmp $1 "" a4cnobkp
        StrCmp $1 "ASCEND.model" a4cnobkp

        ; Remember the old file association if necessary
        WriteRegStr HKLM "SOFTWARE\ASCEND" "BackupAssocA4C" $1

a4cnobkp:
        WriteRegStr HKCR ".a4c" "" "ASCEND.model"

        ; back up old value of .a4c file association
        ReadRegStr $1 HKCR ".a4l" ""
        StrCmp $1 "" a4lnobkp
        StrCmp $1 "ASCEND.model" a4lnobkp

        ; Remember the old file association if necessary
        WriteRegStr HKLM "SOFTWARE\ASCEND" "BackupAssocA4L" $1

a4lnobkp:
        WriteRegStr HKCR ".a4l" "" "ASCEND.model"

        ; So, what does an A4L or A4C file actually do?

        ReadRegStr $0 HKCR "ASCEND.model" ""
        StrCmp $0 "" 0 a4cskip

        WriteRegStr HKCR "ASCEND.model" "" "ASCEND model file"
        WriteRegStr HKCR "ASCEND.model\shell" "" "open"
        WriteRegStr HKCR "ASCEND.model\DefaultIcon" "" "$INSTDIR\ascend-doc.ico"

a4cskip:
        WriteRegStr HKCR "ASCEND.model\shell\open\command" "" '$PYPATH\python.exe "$INSTDIR\ascend" "%1"'

        System::Call 'Shell32::SHChangeNotify(i 0x8000000, i 0, i 0, i 0)'

    ${EndIf}
    Return

SectionEnd

;---------------------------------

Section "Tcl/Tk GUI" sect_tcltk

    ${If} $TCLOK != 'OK'
        MessageBox MB_OK "Tck/Tk GUI can not be installed, because ActiveTcl was not found on this system. If do you want to use the Tcl/Tk GUI, please check the installation instructions ($TCLPATH)"
    ${Else}
        DetailPrint "--- TCL/TK INTERFACE ---"
        SetOutPath $INSTDIR\tcltk
        ; FIXME we should be a bit more selective here?
        File /r /x .svn "..\tcltk\tk\*"
        SetOutPath $INSTDIR
        File "..\tcltk\interface\ascendtcl.dll"
        File "..\tcltk\interface\ascend4.exe"

        StrCpy $TCLINSTALLED "1"
        WriteRegDWORD HKLM "SOFTWARE\ASCEND" "TclTk" 1

    ${EndIf}

SectionEnd

;---------------------------------

Section "Documentation" sect_doc
    SetOutPath $INSTDIR
    File "..\doc\book.pdf"
    StrCpy $PDFINSTALLED "1"
    WriteRegDWORD HKLM "SOFTWARE\ASCEND" "PDF" 1
SectionEnd

; Optional section (can be disabled by the user)
Section "Start Menu Shortcuts" sect_menu
  
    WriteRegDWORD HKLM "SOFTWARE\ASCEND" "StartMenu" 1

    CreateDirectory "$SMPROGRAMS\ASCEND"  

    ; Link to PyGTK GUI
    ${If} $PYINSTALLED == "1"
        CreateShortCut "$SMPROGRAMS\ASCEND\ASCEND.lnk" "$PYPATH\python.exe" '"$INSTDIR\ascend"' "$INSTDIR\ascend.ico" 0
    ${EndIf}

    ; Model library shortcut
    CreateShortCut "$SMPROGRAMS\ASCEND\Model Library.lnk" "$INSTDIR\models" "" "$INSTDIR\models" 0

    ; Link to Tcl/Tk GUI  
    ${If} $TCLINSTALLED == "1"
        CreateShortCut "$SMPROGRAMS\ASCEND\ASCEND Tcl/Tk.lnk" "$INSTDIR\ascend4.exe" "" "$INSTDIR\ascend4.exe" 0
    ${EndIf}
    
    ; Documentation
    ${If} $PDFINSTALLED == "1"
        CreateShortCut "$SMPROGRAMS\ASCEND\User's Manual.lnk" "$INSTDIR\book.pdf" "" "$INSTDIR\book.pdf" 0
    ${EndIf}

    ; Information files
    CreateShortCut "$SMPROGRAMS\ASCEND\LICENSE.lnk" "$INSTDIR\LICENSE.txt" '' "$INSTDIR\LICENSE.txt" 0
    CreateShortCut "$SMPROGRAMS\ASCEND\CHANGELOG.lnk" "$INSTDIR\CHANGELOG.txt" '' "$INSTDIR\CHANGELOG.txt" 0
    CreateShortCut "$SMPROGRAMS\ASCEND\README.lnk" "$INSTDIR\README-windows.txt" '' "$INSTDIR\README-windows.txt" 0

    CreateShortCut "$SMPROGRAMS\ASCEND\Uninstall.lnk" "$INSTDIR\uninstall.exe" "" "$INSTDIR\uninstall.exe" 0
  
SectionEnd

;------------------------------------------------------------------
; HEADER FILES for DEVELOPERS

Section /o "Header files (for developers)" sect_devel
    WriteRegDWORD HKLM "SOFTWARE\ASCEND" "HeaderFiles" 1

    SetOutPath $INSTDIR\include\ascend
    File /r /x .svn "..\ascend\*.h"
    
    ; Create 'ascend-config.bat' batch file for launching the python script 'ascend-config'.
    ClearErrors
    FileOpen $0 $INSTDIR\ascend-config.bat w
    ${If} ${Errors}
        MessageBox MB_OK "The 'ascend-config.bat' file was not installed properly; problems writing to that file."  
    ${Else}
        FileWrite $0 "@echo off"
        FileWriteByte $0 "13"
        FileWriteByte $0 "10"
        FileWrite $0 "set PATH=$PATH"
        FileWriteByte $0 "13"
        FileWriteByte $0 "10"
        FileWrite $0 "cd "
        FileWrite $0 $INSTDIR 
        FileWriteByte $0 "13"
        FileWriteByte $0 "10"
        FileWrite $0 "$PYPATH\python "
        FileWriteByte $0 "34" 
        FileWrite $0 "$INSTDIR\ascend-config"
        FileWriteByte $0 "34"
        FileWrite $0 " %1 %2 %3 %4 %5 %6 %7 %8"
        FileWriteByte $0 "13"
        FileWriteByte $0 "10"
        FileClose $0
    ${EndIf}
    SetOutPath $INSTDIR
SectionEnd

;------------------------------------------------------------------
; UNINSTALLER

Section "Uninstall"

;--- python components ---

    ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "Python"
    ${If} $0 <> 0
  
        DetailPrint "--- REMOVING PYTHON COMPONENTS ---"
        Delete $INSTDIR\python\_ascpy.pyd
        Delete $INSTDIR\python\*.py
        Delete $INSTDIR\python\*.pyc
        Delete $INSTDIR\glade\*.glade
        Delete $INSTDIR\glade\*.png
        Delete $INSTDIR\glade\*.svg
        Delete $INSTDIR\ascend-doc.ico
        Delete $INSTDIR\ascend
        Delete $INSTDIR\ascend.bat
        RmDir $INSTDIR\glade
        RmDir $INSTDIR\python

;--- file association (for Python GUI) ---
  
        DetailPrint "--- REMOVING FILE ASSOCIATION ---"
        ;start of restore script
        ReadRegStr $1 HKCR ".a4c" ""
        ${If} $1 == "ASCEND.model"
            ReadRegStr $1 HKLM "SOFTWARE\ASCEND" "BackupAssocA4C"
            ${If} $1 == ""
                ; nothing to restore: delete it
                DeleteRegKey HKCR ".a4c"
            ${Else}
                WriteRegStr HKCR ".a4c" "" $1
            ${EndIf}
            DeleteRegValue HKLM "SOFTWARE\ASCEND" "BackupAssocA4C"
        ${EndIf}

        ReadRegStr $1 HKCR ".a4l" ""    
        ${If} $1 == "ASCEND.model"
            ReadRegStr $1 HKLM "SOFTWARE\ASCEND" "BackupAssocA4L"
            ${If} $1 == ""
                ; nothing to restore: delete it
                DeleteRegKey HKCR ".a4l"
            ${Else}
                WriteRegStr HKCR ".a4l" "" $1
            ${EndIf}
            DeleteRegValue HKLM "SOFTWARE\ASCEND" "BackupAssocA4L"
        ${EndIf}

        DeleteRegKey HKCR "ASCEND.model" ;Delete key with association settings

        System::Call 'Shell32::SHChangeNotify(i 0x8000000, i 0, i 0, i 0)'
        ;rest of script

    ${EndIf}

;--- tcl/tk components ---

    ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "TclTk"
    ${If} $0 <> 0
        DetailPrint "--- REMOVING TCL/TK COMPONENTS ---"
        Delete $INSTDIR\ascendtcl.dll
        Delete $INSTDIR\ascend4.exe
        RMDir /r $INSTDIR\tcltk
    ${EndIf}

;--- documentation ---

    ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "PDF"
    ${If} $0 <> 0
        DetailPrint "--- REMOVING DOCUMENTATION ---"
        Delete $INSTDIR\book.pdf
    ${EndIf}

;--- header files ---

    ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "HeaderFiles"
    ${If} $0 <> 0
        DetailPrint "--- REMOVING HEADER FILES ---"
        RMDir /r $INSTDIR\include
        Delete $INSTDIR\ascend-config
        Delete $INSTDIR\ascend-config.bat   
    ${EndIf}
    
;--- start menu ---

    ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "StartMenu"
    ${If} $0 <> 0
        ; Remove shortcuts, if any
        DetailPrint "--- REMOVING START MENU SHORTCUTS ---"
        RmDir /r "$SMPROGRAMS\ASCEND"
    ${EndIf}

;--- common components ---

    DetailPrint "--- REMOVING COMMON COMPONENTS ---"
    ; Remove registry keys

    DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\ASCEND"
    DeleteRegKey HKLM "SOFTWARE\ASCEND"

    ; Remove files and uninstaller

    Delete $INSTDIR\ascend.dll
    Delete $INSTDIR\LICENSE.txt
    Delete $INSTDIR\README-windows.txt
    Delete $INSTDIR\CHANGELOG.txt
    Delete $INSTDIR\ascend.ico
    Delete $INSTDIR\Makefile.bt
    Delete $INSTDIR\ascend.syn
    Delete $INSTDIR\ipopt38.dll
    RMDir /r $INSTDIR\models
    Delete $INSTDIR\solvers\qrslv_ascend.dll
    Delete $INSTDIR\solvers\conopt_ascend.dll
    Delete $INSTDIR\solvers\lrslv_ascend.dll
    Delete $INSTDIR\solvers\cmslv_ascend.dll
    Delete $INSTDIR\solvers\lsode_ascend.dll
    Delete $INSTDIR\solvers\ida_ascend.dll
    Delete $INSTDIR\solvers\dopri5_ascend.dll
    Delete $INSTDIR\solvers\ipopt_ascend.dll
    RMDir $INSTDIR\solvers

    ; Remove directories used

    Delete $INSTDIR\uninstall.exe
    RMDir $INSTDIR

SectionEnd

!include "dependencies.nsi"

!include "detect.nsi"

!include "ascendini.nsi"

Function .onInit
    StrCpy $PYINSTALLED ""
    StrCpy $TCLINSTALLED ""
    StrCpy $ASCENDINIFOUND ""
    StrCpy $PDFINSTALLED ""
    
    ExpandEnvStrings $DEFAULTPATH "%WINDIR%;%WINDIR%\system32"

    Call DetectPython
    Pop $PYOK
    Pop $PYPATH
    
    Call DetectGTK
    Pop $GTKOK
    Pop $GTKPATH

    Call DetectGlade
    Pop $GLADEOK
    Pop $GLADEPATH  
    
    Call DetectTcl
    Pop $TCLOK
    Pop $TCLPATH
    
    Call DetectPyGTK
    Pop $PYGTKOK

    Call DetectPyGObject
    Pop $PYGOBJECTOK

    Call DetectPyCairo
    Pop $PYCAIROOK
    
    StrCpy $PATH "$DEFAULTPATH;$PYPATH;$GTKPATH"

    ReadRegStr $0 HKLM "SOFTWARE\ASCEND" "Install_Dir"
    ${If} $0 != ""  
        ;MessageBox MB_OK "Previous installation detected..."
        ; If user previous deselected Tcl/Tk, then deselect it by
        ; default now, i.e don't force the user to install it.
        ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "TclTk"
        ${If} $0 = 0
            ;MessageBox MB_OK "Tcl/Tk was previously deselected"
            SectionGetFlags "${sect_tcltk}" $1
            IntOp $1 $1 ^ ${SF_SELECTED}
            SectionSetFlags "${sect_tcltk}" $1
        ${Else}
            ; If previously installed, force it to stay installed;
            ; the only way to uninstall a component is via complete
            ; uninstall.
            SectionGetFlags "${sect_tcltk}" $1
            IntOp $1 $1 ^ ${SF_RO}
            SectionSetFlags "${sect_tcltk}" $1
        ${EndIf}

        ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "Python"
        ${If} $0 = 0
            ;MessageBox MB_OK "Python was previously deselected"
            SectionGetFlags "${sect_pygtk}" $1
            IntOp $1 $1 ^ ${SF_SELECTED}
            SectionSetFlags "${sect_pygtk}" $1
        ${Else}
            SectionGetFlags "${sect_pygtk}" $1
            IntOp $1 $1 ^ ${SF_RO}
            SectionSetFlags "${sect_pygtk}" $1      
        ${EndIf}

        ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "PDF"
        ${If} $0 = 0
            ;MessageBox MB_OK "Documentation was previously deselected"
            SectionGetFlags "${sect_doc}" $1
            IntOp $1 $1 ^ ${SF_SELECTED}
            SectionSetFlags "${sect_doc}" $1
        ${Else}
            SectionGetFlags "${sect_doc}" $1
            IntOp $1 $1 ^ ${SF_RO}
            SectionSetFlags "${sect_doc}" $1
        ${EndIf}

        ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "StartMenu"
        ${If} $0 = 0
            ;MessageBox MB_OK "Start Menu was previously deselected"
            SectionGetFlags "${sect_menu}" $1
            IntOp $1 $1 ^ ${SF_SELECTED}
            SectionSetFlags "${sect_menu}" $1
        ${Else}
            SectionGetFlags "${sect_menu}" $1
            IntOp $1 $1 ^ ${SF_RO}
            SectionSetFlags "${sect_menu}" $1
        ${EndIf}
        
        ReadRegDWORD $0 HKLM "SOFTWARE\ASCEND" "HeaderFiles"
        ${If} $0 <> 0
            ;MessageBox MB_OK "Header files were previously selected"
            SectionGetFlags "${sect_devel}" $1
            IntOp $1 $1 | ${SF_SELECTED}
            IntOp $1 $1 | ${SF_RO}
            SectionSetFlags "${sect_devel}" $1
        ${EndIf}
    ${EndIf}    

FunctionEnd