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!ifdef MODULE_ENVIRONMENT

!macro ENVIRONMENT_INITIALIZE

  !include "includes\writeEnvStr.nsh"

  !include "includes\writePathStr.nsh"

  !ifndef MODULE_ENVIRONMENT_QTDIR

    !ifdef MODULE_MINGW

      !define MODULE_ENVIRONMENT_QTDIR $MINGW_INSTDIR

    !endif

    !ifdef MODULE_MSVC

      !define MODULE_ENVIRONMENT_QTDIR $MSVC_INSTDIR

    !endif

  !endif

  !define MODULE_ENVIRONMENT_PAGE "envpage.ini"

  var MODULE_ENVIRONMENT_SET

  var MODULE_ENVIRONMENT_OLD

  LangString ModuleEnvironmentTitle ${LANG_ENGLISH} "Configure Environment"

  LangString ModuleEnvironmentDescription ${LANG_ENGLISH} "Configure Qt environment variables"

  Page custom ModuleEnvironmentPageEnter ModuleEnvironmentPageExit

!macroend

!macro ENVIRONMENT_SECTIONS

  Section -ModuleEnvironmentRegister

    push "${MODULE_ENVIRONMENT_QTDIR}"

    call RegisterQtEnvVariables

  SectionEnd

  Function ModuleEnvironmentPageEnter

    push $0

    Call IsNT

    pop $0

    strcmp "$0" "1" +2

      abort

    pop $0

    !insertmacro MUI_HEADER_TEXT "$(ModuleEnvironmentTitle)" "$(ModuleEnvironmentDescription)"

    strcmp $MODULE_ENVIRONMENT_SET "1" 0 envCheckNo

      !insertmacro MUI_INSTALLOPTIONS_WRITE "${MODULE_ENVIRONMENT_PAGE}" "Field 2" "State" "1"

      goto showEnvPage

    envCheckNo:

      !insertmacro MUI_INSTALLOPTIONS_WRITE "${MODULE_ENVIRONMENT_PAGE}" "Field 2" "State" "0"

    showEnvPage:

      !insertmacro MUI_INSTALLOPTIONS_DISPLAY "${MODULE_ENVIRONMENT_PAGE}"

  FunctionEnd

  Function ModuleEnvironmentPageExit

    !insertmacro MUI_INSTALLOPTIONS_READ $MODULE_ENVIRONMENT_SET "${MODULE_ENVIRONMENT_PAGE}" "Field 2" "State"

  FunctionEnd

  Function RegisterQtEnvVariables

    exch $2 ; the installation path = QTDIR

    push $0 ; I think WriteEnvStr mixes up $0 and $1

    push $1

    WriteRegDWORD SHCTX "$PRODUCT_UNIQUE_KEY" "QtEnvSet" $MODULE_ENVIRONMENT_SET

    strcmp $MODULE_ENVIRONMENT_SET "1" 0 noenv

    StrCmp $MODULE_ENVIRONMENT_OLD "0" +4

    DetailPrint "Removing $MODULE_ENVIRONMENT_OLD\bin from PATH"

    push "$MODULE_ENVIRONMENT_OLD\bin"

    Call RemoveFromPath ; remove old qtdir

    DetailPrint "Setting QTDIR to $2"

    push "QTDIR"

    push $2

    Call WriteEnvStr ; set the QTDIR

    DetailPrint "Adding $2\bin to PATH"

    push "$2\bin"

    Call AddToPath ; set the PATH

    push "QMAKESPEC"

    push ${INSTALL_COMPILER}

    Call GetMkSpec

    pop $0

    DetailPrint "Setting QMAKESPEC to $0"

    push $0

    Call WriteEnvStr ; set the QMAKESPEC

    noenv:

      pop $1

      pop $0

      pop $2

  FunctionEnd

  Function un.RegisterQtEnvVariables

    exch $0 ; QTDIR

    push $1

    ClearErrors

    ReadRegDWORD $MODULE_ENVIRONMENT_SET SHCTX "$PRODUCT_UNIQUE_KEY" "QtEnvSet"

    intcmp $MODULE_ENVIRONMENT_SET 0 noenv

    DetailPrint "Removing $0\bin from the PATH"

    push "$0\bin"

    Call un.RemoveFromPath ; removes qt from the path

    ;Check if QTDIR is equal to installdir

    ExpandEnvStrings $1 "%QTDIR%"

    StrCmp "$0" "$1" removeenv

    StrCmp "$0\" "$1" removeenv

    StrCmp "$0" "$1\" removeenv

    Goto noenv

    removeenv:

    DetailPrint "Removing QTDIR"

    push "QTDIR"

    Call un.DeleteEnvStr ; removes QTDIR

    DetailPrint "Removing QMAKESPEC"

    push "QMAKESPEC"

    Call un.DeleteEnvStr ; removes QMAKESPEC

    noenv:

      pop $1

       pop $0

  FunctionEnd

!macroend

!macro ENVIRONMENT_DESCRIPTION

!macroend

!macro ENVIRONMENT_STARTUP

  !insertmacro MUI_INSTALLOPTIONS_EXTRACT "${MODULE_ENVIRONMENT_PAGE}"

  push $0

  ExpandEnvStrings $0 "%QTDIR%"

  StrCmp $0 "%QTDIR%" +4

  strcpy $MODULE_ENVIRONMENT_SET "0" ;QTDIR exists

  strcpy $MODULE_ENVIRONMENT_OLD $0

  Goto +3

  strcpy $MODULE_ENVIRONMENT_SET "1" ;no QTDIR

  strcpy $MODULE_ENVIRONMENT_OLD "0"

  Call IsNT

  pop $0

  strcmp "$0" "1" +2

    strcpy $MODULE_ENVIRONMENT_SET "0"

  pop $0

!macroend

!macro ENVIRONMENT_FINISH

!macroend

!macro ENVIRONMENT_UNSTARTUP

!macroend

!macro ENVIRONMENT_UNINSTALL

  Section -un.ModuleEnvironmentRegister

    push "${MODULE_ENVIRONMENT_QTDIR}"

    call un.RegisterQtEnvVariables

  SectionEnd

!macroend

!macro ENVIRONMENT_UNFINISH

!macroend

!else ;MODULE_ENVIRONMENT

!macro ENVIRONMENT_INITIALIZE

!macroend

!macro ENVIRONMENT_SECTIONS

!macroend

!macro ENVIRONMENT_DESCRIPTION

!macroend

!macro ENVIRONMENT_STARTUP

!macroend

!macro ENVIRONMENT_FINISH

!macroend

!macro ENVIRONMENT_UNSTARTUP

!macroend

!macro ENVIRONMENT_UNINSTALL

!macroend

!macro ENVIRONMENT_UNFINISH

!macroend

!endif ;MODULE_ENVIRONMENT