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# Tix Demostration Program

#

# This sample program is structured in such a way so that it can be

# executed from the Tix demo program "widget": it must have a

# procedure called "RunSample". It should also have the "if" statment

# at the end of this file so that it can be run as a standalone

# program using tixwish.

# This file demonstrates the use of the tixFileSelectDialog widget --

# This is a neat file selection dialog that looks like the Motif 

# file-selection dialog widget. I know that Motif sucks, but 

# tixFileSelectDialog looks neat nevertheless.

#

proc RunSample {w} {

    # Create an entry for the user to input a filename. If he can't

    # bother to type in the name, he can press the "Browse ..." button

    # and call up the file dialog

    #

    frame $w.top -border 1 -relief raised

    tixLabelEntry $w.top.ent -label "Select A File:" -labelside top \

        -options {

            entry.width 25

            entry.textVariable demo_fdlg_filename

            label.anchor w

        }

    bind [$w.top.ent subwidget entry] <Return> "fdlg:okcmd $w"

    uplevel #0 set demo_fdlg_filename {}

    button $w.top.btn -text "Browse ..." -command "fdlg:browse"

    pack $w.top.ent -side left -expand yes -fill x -anchor s -padx 4 -pady 4

    pack $w.top.btn -side left -anchor s -padx 4 -pady 4

    # Use a ButtonBox to hold the buttons.

    #

    tixButtonBox $w.box -orientation horizontal

    $w.box add ok     -text Ok     -underline 0 -command "fdlg:okcmd $w" \

        -width 6

    $w.box add cancel -text Cancel -underline 0 -command "destroy $w" \

        -width 6

    pack $w.box -side bottom -fill x

    pack $w.top -side top -fill both -expand yes

}

# Pop up a file selection dialog

#

proc fdlg:browse {} {

    # [Hint]

    # The best way to use an FileSelectDialog is not to create one yourself

    # but to call the command "tix filedialog". This command creates one file

    # dialog box that is shared by different parts of the application.

    # This way, your application can save resources because it doesn't

    # need to create a lot of file dialog boxes even if it needs to input

    # file names at a lot of different occasions.

    #

    set dialog [tix filedialog tixFileSelectDialog]

    $dialog config -command fdlg:select_file

    $dialog popup

}

proc fdlg:select_file {file} {

    global demo_fdlg_filename

    set demo_fdlg_filename $file

}

proc fdlg:okcmd {w} {

    global demo_fdlg_filename

    if {$demo_fdlg_filename != {}} {

        puts "You have selected the file $demo_fdlg_filename"

    } else {

        puts "You haven't selected any file"

    }

    destroy $w

}

# This "if" statement makes it possible to run this script file inside or

# outside of the main demo program "widget".

#

if {![info exists tix_demo_running]} {

    wm withdraw .

    set w .demo

    toplevel $w

    RunSample $w

    bind .demo <Destroy> exit

}