package require tdom

proc getSimLayout { curframe {dirname ./} {xmlFile Sim.SimInfo} {txtFile graph.txt} {pngFile graph.gif} } {

    #set xmlFile ./Sim.SimInfo
    #set txtFile ./graph.txt
    #set pngFile ./graph.png
    
    set size [file size $dirname$xmlFile]
    set fd [open $dirname$xmlFile]
    set xml [read $fd $size]
    close $fd
    set doc [dom parse -simple $xml]
    set root [$doc documentElement]

    set fh [open $dirname$txtFile "w"]
    puts $fh "digraph finite_state_machine {"
    puts $fh "size=\"7,7\";"
    puts connection
    foreach connection [$root selectNodes Connection] {
# remove the next two lines
	puts aa
	puts $connection
	set DotCommand ""
	set SourceId [[$connection child 1 Source] getAttribute id]
	set SourceName [[$root find id $SourceId] getAttribute Name]
	set TargetId [[$connection child 1 Target] getAttribute id]
	set TargetName [[$root find id $TargetId] getAttribute Name]
	append DotCommand "\"" $SourceName "\" -> \"" $TargetName "\""
	set InputNr [[$connection child 1 InputNumber] getAttribute value]
	switch $InputNr {
	    0 {}
	    1 {append DotCommand " \[arrowhead = tee\]"}
	    2 {}
	    3 {append DotCommand " \[arrowhead = tee\]"}
	}

	puts "Dot= $DotCommand"
	append DotCommand " ;"
	puts $fh $DotCommand
    }
    puts $fh "}"
    close $fh


    exec dot -Tgif $dirname$txtFile -o $dirname$pngFile

    $doc delete

    LayoutImage read $dirname$pngFile -shrink
    set imageWidth [image width LayoutImage]
    set imageHeight [image height LayoutImage]
    ${curframe}.layoutCanvas configure -width $imageWidth -height $imageHeight
}

proc ShowLayoutWindow {LayoutWindowName SimDataDir {pngFile graph.gif} } {
    set ::VisibleSimLayout 1
    toplevel $LayoutWindowName
    wm protocol $LayoutWindowName WM_DELETE_WINDOW "HideWin $LayoutWindowName ::VisibleSimLayout"
    set curframe ${::LayoutWindowName}
    puts "getSimLayout $SimDataDir"
    pack [button ${curframe}.actualize -command "getSimLayout $curframe $SimDataDir" -text "actualize Picture"]

    image create photo LayoutImage
    if {[file exists $SimDataDir$pngFile] == 1} {
    LayoutImage read $SimDataDir$pngFile
    set imageWidth [image width LayoutImage]
    set imageHeight [image height LayoutImage]
    } else {
    set imageWidth 100
    set imageHeight 20
    }
    pack [canvas ${curframe}.layoutCanvas -height $imageHeight -width $imageWidth]
    ${curframe}.layoutCanvas create image 0 0 -image LayoutImage -anchor nw
}

proc doSomething {} {
    puts dlskjfsdlk
}