# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-

#

#	$Id: DirBox.tcl,v 1.4 2004/03/28 02:44:57 hobbs Exp $

#

# DirBox.tcl --

#

#	Implements the tixDirSelectBox widget.

#

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

#	     HList subwidget

#

# Copyright (c) 1993-1999 Ioi Kim Lam.

# Copyright (c) 2000-2001 Tix Project Group.

# Copyright (c) 2004 ActiveState

#

# 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.history			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 {$data(-value) eq ""} {

	set data(-value) [pwd]

    }

}

proc tixDirSelectBox:SetBindings {w} {

    upvar #0 $w data

    tixChainMethod $w SetBindings

    $data(w:dircbx) config -command [list tixDirSelectBox:Cmd-DirCbx $w]

    $data(w:dirlist) config -command [list tixDirSelectBox:Cmd-DirList $w]\

	-browsecmd [list 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]} {

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

	#

	if {![tixFSIsValid $path]} {

	    tk_messageBox -title "Invalid Directory" \

		-type ok -icon error \

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

	    $data(w:dircbx) config \

		-text [tixFSDisplayName [file normalize $data(-value)]] \

		-directory $data(-value)

	    return

	}

	# 1.2 Prompt for creation

	#

	set choice [tk_messageBox -title "Create Directory?" \

			-type yesno -icon question \

			-message "Directory \"$path\" does not exist.\

			\nDo you want to create it?"]

	if {$choice eq "yes"

	    && [catch {file mkdir [file dirname $path]} err]} {

	    tk_messageBox -title "Error Creating Directory" \

		-icon error -type ok \

		-message "Cannot create directory \"$path\":\n$err"

	    set choice "no"

	}

	if {$choice eq "no"} {

	    $data(w:dircbx) config \

		-text [tixFSDisplayName [file normalize $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_messageBox -title "Invalid Directory" \

	    -type ok -icon error \

	    -message "\"$path\" is not a directory"

	$data(w:dircbx) config \

	    -text [tixFSDisplayName [file normalize $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 [tixFSNormalize $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 [tixFSNormalize $dir]

    tixDirSelectBox:SetValue $w $dir 0 0

}

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

# Incoming event: Application

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

proc tixDirSelectBox:config-value {w value} {

    upvar #0 $w data

    set value [tixFSNormalize $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 $dir

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

	tixSetSilent $data(w:dirlist) $dir

    }

    if {$callback} {

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

	    set bind(specs) {%V}

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

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

	}

    }

}