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Diffstat (limited to 'tix/demos/samples/DynTree.tcl')
-rw-r--r-- | tix/demos/samples/DynTree.tcl | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/tix/demos/samples/DynTree.tcl b/tix/demos/samples/DynTree.tcl new file mode 100644 index 00000000000..dd63abff77b --- /dev/null +++ b/tix/demos/samples/DynTree.tcl @@ -0,0 +1,145 @@ +# 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 how to use the TixTree widget to display +# dynamic hierachical data (the files in the Unix file system) +# + +proc RunSample {w} { + + # We create the frame and the ScrolledHList widget + # at the top of the dialog box + # + frame $w.top -relief raised -bd 1 + + # Create a TixTree widget to display the hypothetical DOS disk drive + # + # + tixTree $w.top.a -options { + hlist.separator "/" + hlist.width 35 + hlist.height 25 + } + + pack $w.top.a -expand yes -fill both -padx 10 -pady 10 -side left + + set tree $w.top.a + set hlist [$tree subwidget hlist] + + $tree config -opencmd "DynTree:OpenDir $tree" + + # Add the root directory the TixTree widget + DynTree:AddDir $tree / + + # The / directory is added in the "open" mode. The user can open it + # and then browse its subdirectories ... + + + # Use a ButtonBox to hold the buttons. + # + tixButtonBox $w.box -orientation horizontal + $w.box add ok -text Ok -underline 0 -command "destroy $w" \ + -width 6 + $w.box add cancel -text Cancel -underline 0 -command "destroy $w" \ + -width 6 + + pack $w.box -side bottom -fill x + pack $w.top -side top -fill both -expand yes +} + +proc DynTree:AddDir {tree dir} { + set hlist [$tree subwidget hlist] + + if {$dir == "/"} { + set text / + } else { + set text [file tail $dir] + } + + $hlist add $dir -itemtype imagetext \ + -text $text -image [tix getimage folder] + + catch { + # We need a catch here because the directory may not be readable by us + # + $tree setmode $dir none + if {[glob -nocomplain $dir/*] != {}} { + $tree setmode $dir open + } + } +} + + +# This command is called whenever the user presses the (+) indicator or +# double clicks on a directory whose mode is "open". It loads the files +# inside that directory into the Tree widget. +# +# Note we didn't specify the -closecmd option for the Tree widget, so it +# performs the default action when the user presses the (-) indicator or +# double clicks on a directory whose mode is "close": hide all of its child +# entries +# +proc DynTree:OpenDir {tree dir} { + set PWD [pwd] + set hlist [$tree subwidget hlist] + + if {[$hlist info children $dir] != {}} { + # We have already loaded this directory. Let's just + # show all the child entries + # + # Note: since we load the directory only once, it will not be + # refreshed if the you add or remove files from this + # directory. + # + foreach kid [$hlist info children $dir] { + $hlist show entry $kid + } + return + } + + if [catch {cd $dir}] { + # We can't read that directory, better not do anything + cd $PWD + return + } + + set files [lsort [glob -nocomplain *]] + foreach f $files { + if [file isdirectory $f] { + if {$dir == "/"} { + set subdir /$f + } else { + set subdir $dir/$f + } + DynTree:AddDir $tree $subdir + } else { + if {$dir == "/"} { + set file /$f + } else { + set file $dir/$f + } + + $hlist add $file -itemtype imagetext \ + -text $f -image [tix getimage file] + } + } + + cd $PWD +} + +# 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 +} + |