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# DirBox.tcl --

#

#       Implements the tixDirSelectBox widget.

#

#          - overrides the -browsecmd and -command options of the

#            HList subwidget

#

# Copyright (c) 1996, Expert Interface Technologies

#

# See the file "license.terms" for information on usage and redistribution

# of this file, and for a DISCLAIMER OF ALL WARRANTIES.

#

tixWidgetClass tixDirSelectBox {

    -classname TixDirSelectBox

    -superclass tixPrimitive

    -method {

    }

    -flag {

        -command -disablecallback -value

    }

    -configspec {

        {-command command Command ""}

        {-disablecallback disableCallback DisableCallback 0 tixVerifyBoolean}

        {-label label Label "Directory:"}

        {-value value Value ""}

    }

    -forcecall {

        -value -label

    }

    -default {

        {*combo*listbox.height          5}

        {*combo.label.anchor            w}

        {*combo.labelSide               top}

        {*combo.hostory                 true}

        {*combo.historyLimit            20}

    }

}

proc tixDirSelectBox:InitWidgetRec {w} {

    upvar #0 $w data

    tixChainMethod $w InitWidgetRec

}

proc tixDirSelectBox:ConstructWidget {w} {

    upvar #0 $w data

    tixChainMethod $w ConstructWidget

    set data(w:dircbx) [tixFileComboBox $w.dircbx]

    set data(w:dirlist)  [tixDirList $w.dirlist]

    pack $data(w:dircbx) -side top -fill x -padx 4 -pady 2

    pack $data(w:dirlist) -side top -fill both -expand yes -padx 4 -pady 2

    if ![string comp $data(-value) ""] {

        set data(-value) [tixFSPWD]

    }

}

proc tixDirSelectBox:SetBindings {w} {

    upvar #0 $w data

    tixChainMethod $w SetBindings

    $data(w:dircbx) config -command "tixDirSelectBox:Cmd-DirCbx $w"

    $data(w:dirlist) config -command "tixDirSelectBox:Cmd-DirList $w"\

        -browsecmd "tixDirSelectBox:Browse-DirList $w"

}

#----------------------------------------------------------------------

# Incoming event: User

#----------------------------------------------------------------------

# User activates the FileComboBox

#

#

proc tixDirSelectBox:Cmd-DirCbx {w args} {

    upvar #0 $w data

    set fInfo [tixEvent value]

    set path [lindex $fInfo 0]

    if {![file exists $path]} {

        tk_dialog .tix_error "" "Directory \"$path\" does not exist." \

            error 0 Ok

        $data(w:dircbx) config \

            -text [tixFSDisplayName [tixFSNormDir $data(-value)]] \

            -directory $data(-value)

        return

        #

        # The following code is not used because directories cannot be created

        # on Windows

        #

        # 1.1 Check for validity. The pathname cannot contain invalid chars

        #

        if ![tixFSIsValid $path] {

            tk_dialog .tix_error "Error" \

                "\"$path\" is not a valid directory name" \

                error 0 Ok

            $data(w:dircbx) config \

                -text [tixFSDisplayName [tixFSNormDir $data(-value)]] \

                -directory $data(-value)

            return

        }

        # 1.2 Prompt for creation

        #

        set choice [tk_dialog .tix_error "" \

            "Directory \"$path\" does not exist. Do you want to create it?" \

            question 1 Yes No]

        if {$choice == 1} {

            $data(w:dircbx) config \

                -text [tixFSDisplayName [tixFSNormDir $data(-value)]] \

                -directory $data(-value)

            return

        } else {

            if ![tixFSCreateDirs $path] {

                tk_dialog .tix_error "Error" \

                    "Cannot create directory \"$path\". Permission denied" \

                    error 0 Ok

                $data(w:dircbx) config \

                    -text [tixFSDisplayName [tixFSNormDir $data(-value)]] \

                    -directory $data(-value)

                return

            }

            tixDirSelectBox:SetValue $w $path 1 1

        }

    } elseif {![file isdirectory $path]} {

        # 2.1: Can't choose a non-directory file

        #

        tk_dialog .tix_error "Error" \

            "\"$path\" is not a directory." \

            error 0 Ok

        $data(w:dircbx) config \

            -text [tixFSDisplayName [tixFSNormDir $data(-value)]] \

            -directory $data(-value)

        return

    } else {

        # OK. It is an existing directory

        #

        tixDirSelectBox:SetValue $w $path 1 1

    }

}

# User activates the dir list

#

#

proc tixDirSelectBox:Cmd-DirList {w args} {

    upvar #0 $w data

    set dir $data(-value)

    catch {

        set dir [tixEvent flag V]

    }

    set dir [tixFSNormDir $dir]

    tixDirSelectBox:SetValue $w $dir 0 0

}

# User browses the dir list

#

#

proc tixDirSelectBox:Browse-DirList {w args} {

    upvar #0 $w data

    set dir $data(-value)

    catch {

        set dir [tixEvent flag V]

    }

    set dir [tixFSNormDir $dir]

    tixDirSelectBox:SetValue $w $dir 0 0

}

#----------------------------------------------------------------------

# Incoming event: Application

#----------------------------------------------------------------------

proc tixDirSelectBox:config-value {w value} {

    upvar #0 $w data

    set value [tixFSNormDir $value]

    tixDirSelectBox:SetValue $w $value 1 1

    return $value

}

proc tixDirSelectBox:config-label {w value} {

    upvar #0 $w data

    $data(w:dircbx) subwidget combo config -label $value

}

#----------------------------------------------------------------------

#

#                       Internal functions

#

#----------------------------------------------------------------------

# Arguments:

#       callback:Bool   Should we invoke the the -command.

#       setlist:Bool    Should we set the -value of the DirList subwidget.

#

proc tixDirSelectBox:SetValue {w dir callback setlist} {

    upvar #0 $w data

    set data(-value) $dir

    $data(w:dircbx) config -text [tixFSDisplayName $dir] \

        -directory [tixFSDisplayName $dir]

    if {$setlist && [file isdirectory $dir]} {

        tixSetSilent $data(w:dirlist) $dir

    }

    if {$callback} {

        if {!$data(-disablecallback) && ![tixStrEq $data(-command) ""]} {

            set bind(specs) {%V}

            set bind(%V)    $data(-value)

            tixEvalCmdBinding $w $data(-command) bind $data(-value)

        }

    }

}