home *** CD-ROM | disk | FTP | other *** search
Text File | 2001-10-22 | 61.0 KB | 1,885 lines |
- # ------------------------------------------------------------------------------
- # tree.tcl
- # This file is part of Unifix BWidget Toolkit
- # $Id: tree.tcl,v 1.33 2001/08/08 20:58:21 andreas_kupries Exp $
- # ------------------------------------------------------------------------------
- # Index of commands:
- # - Tree::create
- # - Tree::configure
- # - Tree::cget
- # - Tree::insert
- # - Tree::itemconfigure
- # - Tree::itemcget
- # - Tree::bindText
- # - Tree::bindImage
- # - Tree::delete
- # - Tree::move
- # - Tree::reorder
- # - Tree::selection
- # - Tree::exists
- # - Tree::parent
- # - Tree::index
- # - Tree::nodes
- # - Tree::see
- # - Tree::opentree
- # - Tree::closetree
- # - Tree::edit
- # - Tree::xview
- # - Tree::yview
- # - Tree::_update_edit_size
- # - Tree::_destroy
- # - Tree::_see
- # - Tree::_recexpand
- # - Tree::_subdelete
- # - Tree::_update_scrollregion
- # - Tree::_cross_event
- # - Tree::_draw_node
- # - Tree::_draw_subnodes
- # - Tree::_update_nodes
- # - Tree::_draw_tree
- # - Tree::_redraw_tree
- # - Tree::_redraw_selection
- # - Tree::_redraw_idle
- # - Tree::_drag_cmd
- # - Tree::_drop_cmd
- # - Tree::_over_cmd
- # - Tree::_auto_scroll
- # - Tree::_scroll
- # ------------------------------------------------------------------------------
-
- namespace eval Tree {
- namespace eval Node {
- Widget::declare Tree::Node {
- {-text String "" 0}
- {-font TkResource "" 0 listbox}
- {-image TkResource "" 0 label}
- {-window String "" 0}
- {-fill TkResource black 0 {listbox -foreground}}
- {-data String "" 0}
- {-open Boolean 0 0}
- {-selectable Boolean 1 0}
- {-drawcross Enum auto 0 {auto allways never}}
- }
- }
-
- Widget::tkinclude Tree canvas .c \
- remove {
- -insertwidth -insertbackground -insertborderwidth -insertofftime
- -insertontime -selectborderwidth -closeenough -confine -scrollregion
- -xscrollincrement -yscrollincrement -width -height
- } \
- initialize {
- -relief sunken -borderwidth 2 -takefocus 1
- -highlightthickness 1 -width 200
- }
-
- Widget::declare Tree {
- {-deltax Int 10 0 "%d >= 0"}
- {-deltay Int 15 0 "%d >= 0"}
- {-padx Int 20 0 "%d >= 0"}
- {-background TkResource "" 0 listbox}
- {-selectbackground TkResource "" 0 listbox}
- {-selectforeground TkResource "" 0 listbox}
- {-selectcommand String "" 0}
- {-width TkResource "" 0 listbox}
- {-height TkResource "" 0 listbox}
- {-selectfill Boolean 0 0}
- {-showlines Boolean 1 0}
- {-linesfill TkResource black 0 {listbox -foreground}}
- {-linestipple TkResource "" 0 {label -bitmap}}
- {-redraw Boolean 1 0}
- {-opencmd String "" 0}
- {-closecmd String "" 0}
- {-dropovermode Flag "wpn" 0 "wpn"}
- {-bg Synonym -background}
- }
- DragSite::include Tree "TREE_NODE" 1
- DropSite::include Tree {
- TREE_NODE {copy {} move {}}
- }
-
- Widget::addmap Tree "" .c {-deltay -yscrollincrement}
-
- # Trees on windows have a white (system window) background
- if { $::tcl_platform(platform) == "windows" } {
- option add *Tree.c.background SystemWindow widgetDefault
- option add *TreeNode.fill SystemWindowText widgetDefault
- }
-
- bind TreeSentinalStart <Button-1> {
- if { $::Tree::sentinal(%W) } {
- set ::Tree::sentinal(%W) 0
- break
- }
- }
-
- bind TreeSentinalEnd <Button-1> {
- set ::Tree::sentinal(%W) 0
- }
-
- bind TreeFocus <Button-1> [list focus %W]
-
- proc ::Tree { path args } { return [eval Tree::create $path $args] }
- proc use {} {}
-
- variable _edit
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::create
- # ------------------------------------------------------------------------------
- proc Tree::create { path args } {
- variable $path
- upvar 0 $path data
-
- Widget::init Tree $path $args
- set ::Tree::sentinal($path.c) 0
-
- set data(root) {{}}
- set data(selnodes) {}
- set data(upd,level) 0
- set data(upd,nodes) {}
- set data(upd,afterid) ""
- set data(dnd,scroll) ""
- set data(dnd,afterid) ""
- set data(dnd,selnodes) {}
- set data(dnd,node) ""
-
- frame $path -class Tree -bd 0 -highlightthickness 0 -relief flat \
- -takefocus 0
- eval canvas $path.c [Widget::subcget $path .c] -xscrollincrement 8
- bindtags $path.c [list TreeSentinalStart TreeFocus $path.c Canvas \
- [winfo toplevel $path] all TreeSentinalEnd]
- pack $path.c -expand yes -fill both
- $path.c bind cross <ButtonPress-1> [list Tree::_cross_event $path]
-
- # Added by ericm@scriptics.com
- # These allow keyboard traversal of the tree
- bind $path.c <KeyPress-Up> "Tree::_keynav up $path"
- bind $path.c <KeyPress-Down> "Tree::_keynav down $path"
- bind $path.c <KeyPress-Right> "Tree::_keynav right $path"
- bind $path.c <KeyPress-Left> "Tree::_keynav left $path"
- bind $path.c <KeyPress-space> "+Tree::_keynav space $path"
-
- # These allow keyboard control of the scrolling
- bind $path.c <Control-KeyPress-Up> "$path.c yview scroll -1 units"
- bind $path.c <Control-KeyPress-Down> "$path.c yview scroll 1 units"
- bind $path.c <Control-KeyPress-Left> "$path.c xview scroll -1 units"
- bind $path.c <Control-KeyPress-Right> "$path.c xview scroll 1 units"
- # ericm@scriptics.com
-
- bind $path <Configure> "Tree::_update_scrollregion $path"
- bind $path <Destroy> "Tree::_destroy $path"
- bind $path <FocusIn> [list after idle {BWidget::refocus %W %W.c}]
-
- DragSite::setdrag $path $path.c Tree::_init_drag_cmd \
- [Widget::cget $path -dragendcmd] 1
- DropSite::setdrop $path $path.c Tree::_over_cmd Tree::_drop_cmd 1
-
- rename $path ::$path:cmd
- proc ::$path { cmd args } "return \[eval Tree::\$cmd $path \$args\]"
-
- set w [Widget::cget $path -width]
- set h [Widget::cget $path -height]
- set dy [Widget::cget $path -deltay]
- $path.c configure -width [expr {$w*8}] -height [expr {$h*$dy}]
-
- # ericm
- # Bind <Button-1> to select the clicked node -- no reason not to, right?
- Tree::bindText $path <Button-1> "$path selection set"
- Tree::bindImage $path <Button-1> "$path selection set"
-
-
- # Add sentinal bindings for double-clicking on items, to handle the
- # gnarly Tk bug wherein:
- # ButtonClick
- # ButtonClick
- # On a canvas item translates into button click on the item, button click
- # on the canvas, double-button on the item, single button click on the
- # canvas (which can happen if the double-button on the item causes some
- # other event to be handled in between when the button clicks are examined
- # for the canvas)
- $path.c bind TreeItemSentinal <Double-Button-1> \
- "set ::Tree::sentinal($path.c) 1"
- # ericm
-
- return $path
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::configure
- # ------------------------------------------------------------------------------
- proc Tree::configure { path args } {
- variable $path
- upvar 0 $path data
-
- set res [Widget::configure $path $args]
-
- set ch1 [expr {[Widget::hasChanged $path -deltax val] |
- [Widget::hasChanged $path -deltay dy] |
- [Widget::hasChanged $path -padx val] |
- [Widget::hasChanged $path -showlines val]}]
-
- set ch2 [expr {[Widget::hasChanged $path -selectbackground val] |
- [Widget::hasChanged $path -selectforeground val]}]
-
- if { [Widget::hasChanged $path -linesfill fill] |
- [Widget::hasChanged $path -linestipple stipple] } {
- $path.c itemconfigure line -fill $fill -stipple $stipple
- $path.c itemconfigure cross -foreground $fill
- }
-
- if { $ch1 } {
- _redraw_idle $path 3
- } elseif { $ch2 } {
- _redraw_idle $path 1
- }
-
- if { [Widget::hasChanged $path -height h] } {
- $path.c configure -height [expr {$h*$dy}]
- }
- if { [Widget::hasChanged $path -width w] } {
- $path.c configure -width [expr {$w*8}]
- }
-
- if { [Widget::hasChanged $path -redraw bool] && $bool } {
- set upd $data(upd,level)
- set data(upd,level) 0
- _redraw_idle $path $upd
- }
-
- set force [Widget::hasChanged $path -dragendcmd dragend]
- DragSite::setdrag $path $path.c Tree::_init_drag_cmd $dragend $force
- DropSite::setdrop $path $path.c Tree::_over_cmd Tree::_drop_cmd
-
- return $res
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::cget
- # ------------------------------------------------------------------------------
- proc Tree::cget { path option } {
- return [Widget::cget $path $option]
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::insert
- # ------------------------------------------------------------------------------
- proc Tree::insert { path index parent node args } {
- variable $path
- upvar 0 $path data
-
- if { [info exists data($node)] } {
- return -code error "node \"$node\" already exists"
- }
- if { ![info exists data($parent)] } {
- return -code error "node \"$parent\" does not exist"
- }
-
- Widget::init Tree::Node $path.$node $args
- if { ![string compare $index "end"] } {
- lappend data($parent) $node
- } else {
- incr index
- set data($parent) [linsert $data($parent) $index $node]
- }
- set data($node) [list $parent]
-
- if { ![string compare $parent "root"] } {
- _redraw_idle $path 3
- } elseif { [visible $path $parent] } {
- # parent is visible...
- if { [Widget::getMegawidgetOption $path.$parent -open] } {
- # ...and opened -> redraw whole
- _redraw_idle $path 3
- } else {
- # ...and closed -> redraw cross
- lappend data(upd,nodes) $parent 8
- _redraw_idle $path 2
- }
- }
- return $node
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::itemconfigure
- # ------------------------------------------------------------------------------
- proc Tree::itemconfigure { path node args } {
- variable $path
- upvar 0 $path data
-
- if { ![string compare $node "root"] || ![info exists data($node)] } {
- return -code error "node \"$node\" does not exist"
- }
-
- set result [Widget::configure $path.$node $args]
- if { [visible $path $node] } {
- set lopt {}
- set flag 0
- foreach opt {-window -image -drawcross -font -text -fill} {
- set flag [expr {$flag << 1}]
- if { [Widget::hasChanged $path.$node $opt val] } {
- set flag [expr {$flag | 1}]
- }
- }
-
- if { [Widget::hasChanged $path.$node -open val] } {
- if {[llength $data($node)] > 1} {
- # node have subnodes - full redraw
- _redraw_idle $path 3
- } else {
- # force a redraw of the plus/minus sign
- set flag [expr {$flag | 8}]
- }
- }
- if { $data(upd,level) < 3 && $flag } {
- if { [set idx [lsearch $data(upd,nodes) $node]] == -1 } {
- lappend data(upd,nodes) $node $flag
- } else {
- incr idx
- set flag [expr {[lindex $data(upd,nodes) $idx] | $flag}]
- set data(upd,nodes) [lreplace $data(upd,nodes) $idx $idx $flag]
- }
- _redraw_idle $path 2
- }
- }
- return $result
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::itemcget
- # ------------------------------------------------------------------------------
- proc Tree::itemcget { path node option } {
- # Instead of upvar'ing $path as data for this test, just directly refer to
- # it, as that is faster.
- if { ![string compare $node "root"] || \
- ![info exists ::Tree::${path}($node)] } {
- return -code error "node \"$node\" does not exist"
- }
-
- return [Widget::cget $path.$node $option]
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::bindText
- # ------------------------------------------------------------------------------
- proc Tree::bindText { path event script } {
- if { $script != "" } {
- $path.c bind "node" $event \
- "$script \[Tree::_get_node_name $path current 2\]"
- } else {
- $path.c bind "node" $event {}
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::bindImage
- # ------------------------------------------------------------------------------
- proc Tree::bindImage { path event script } {
- if { $script != "" } {
- $path.c bind "img" $event \
- "$script \[Tree::_get_node_name $path current 2\]"
- } else {
- $path.c bind "img" $event {}
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::delete
- # ------------------------------------------------------------------------------
- proc Tree::delete { path args } {
- variable $path
- upvar 0 $path data
-
- foreach lnodes $args {
- foreach node $lnodes {
- if { [string compare $node "root"] && [info exists data($node)] } {
- set parent [lindex $data($node) 0]
- set idx [lsearch $data($parent) $node]
- set data($parent) [lreplace $data($parent) $idx $idx]
- _subdelete $path [list $node]
- }
- }
- }
-
- set sel $data(selnodes)
- set data(selnodes) {}
- eval selection $path set $sel
- _redraw_idle $path 3
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::move
- # ------------------------------------------------------------------------------
- proc Tree::move { path parent node index } {
- variable $path
- upvar 0 $path data
-
- if { ![string compare $node "root"] || ![info exists data($node)] } {
- return -code error "node \"$node\" does not exist"
- }
- if { ![info exists data($parent)] } {
- return -code error "node \"$parent\" does not exist"
- }
- set p $parent
- while { [string compare $p "root"] } {
- if { ![string compare $p $node] } {
- return -code error "node \"$parent\" is a descendant of \"$node\""
- }
- set p [parent $path $p]
- }
-
- set oldp [lindex $data($node) 0]
- set idx [lsearch $data($oldp) $node]
- set data($oldp) [lreplace $data($oldp) $idx $idx]
- set data($node) [concat [list $parent] [lrange $data($node) 1 end]]
- if { ![string compare $index "end"] } {
- lappend data($parent) $node
- } else {
- incr index
- set data($parent) [linsert $data($parent) $index $node]
- }
- if { (![string compare $oldp "root"] ||
- ([visible $path $oldp] && [Widget::getoption $path.$oldp -open])) ||
- (![string compare $parent "root"] ||
- ([visible $path $parent] && [Widget::getoption $path.$parent -open])) } {
- _redraw_idle $path 3
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::reorder
- # ------------------------------------------------------------------------------
- proc Tree::reorder { path node neworder } {
- variable $path
- upvar 0 $path data
-
- if { ![info exists data($node)] } {
- return -code error "node \"$node\" does not exist"
- }
- set children [lrange $data($node) 1 end]
- if { [llength $children] } {
- set children [BWidget::lreorder $children $neworder]
- set data($node) [linsert $children 0 [lindex $data($node) 0]]
- if { [visible $path $node] && [Widget::getoption $path.$node -open] } {
- _redraw_idle $path 3
- }
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::selection
- # ------------------------------------------------------------------------------
- proc Tree::selection { path cmd args } {
- variable $path
- upvar 0 $path data
-
- switch -- $cmd {
- set {
- set data(selnodes) {}
- foreach node $args {
- if { [info exists data($node)] } {
- if { [Widget::getoption $path.$node -selectable] } {
- if { [lsearch $data(selnodes) $node] == -1 } {
- lappend data(selnodes) $node
- }
- }
- }
- }
-
- if { ![string equal $data(selnodes) ""] } {
- set selectcmd [Widget::getoption $path -selectcommand]
- if { ![string equal $selectcmd ""] } {
- lappend selectcmd $path
- lappend selectcmd $data(selnodes)
- uplevel \#0 $selectcmd
- }
- }
- }
- add {
- foreach node $args {
- if { [info exists data($node)] } {
- if { [Widget::getoption $path.$node -selectable] } {
- if { [lsearch $data(selnodes) $node] == -1 } {
- lappend data(selnodes) $node
- }
- }
- }
- }
- }
- range {
- # Here's our algorithm:
- # make a list of all nodes, then take the range from node1
- # to node2 and select those nodes
- # This works because of how this widget handles redraws:
- # the tree is always completely redraw, always from top to bottom.
- # So the list of visible nodes *is* the list of nodes, and we can
- # use that to decide which nodes to select.
- foreach {node1 node2} $args break
- if { [info exists data($node1)] && [info exists data($node2)] } {
- set nodes {}
- foreach nodeItem [$path.c find withtag node] {
- set node [Tree::_get_node_name $path $nodeItem 2]
- if { [Widget::getoption $path.$node -selectable] } {
- lappend nodes $node
- }
- }
- # surles: Set the root string to the first element on the list.
- if {$node1 == "root"} {
- set node1 [lindex $nodes 0]
- }
- if {$node2 == "root"} {
- set node2 [lindex $nodes 0]
- }
-
- # Find the first visible ancestor of node1, starting with node1
- while {[set index1 [lsearch -exact $nodes $node1]] == -1} {
- set node1 [lindex $data($node1) 0]
- }
- # Find the first visible ancestor of node2, starting with node2
- while {[set index2 [lsearch -exact $nodes $node2]] == -1} {
- set node2 [lindex $data($node2) 0]
- }
- # If the nodes were given in backwards order, flip the
- # indices now
- if { $index2 < $index1 } {
- incr index1 $index2
- set index2 [expr {$index1 - $index2}]
- set index1 [expr {$index1 - $index2}]
- }
- set data(selnodes) [lrange $nodes $index1 $index2]
- }
- }
- remove {
- foreach node $args {
- if { [set idx [lsearch $data(selnodes) $node]] != -1 } {
- set data(selnodes) [lreplace $data(selnodes) $idx $idx]
- }
- }
- }
- clear {
- set data(selnodes) {}
- }
- get {
- return $data(selnodes)
- }
- includes {
- return [expr {[lsearch $data(selnodes) $args] != -1}]
- }
- default {
- return
- }
- }
- _redraw_idle $path 1
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::exists
- # ------------------------------------------------------------------------------
- proc Tree::exists { path node } {
- variable $path
- upvar 0 $path data
-
- return [info exists data($node)]
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::visible
- # ------------------------------------------------------------------------------
- proc Tree::visible { path node } {
- set idn [$path.c find withtag n:$node]
- return [llength $idn]
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::parent
- # ------------------------------------------------------------------------------
- proc Tree::parent { path node } {
- variable $path
- upvar 0 $path data
-
- if { ![info exists data($node)] } {
- return -code error "node \"$node\" does not exist"
- }
- return [lindex $data($node) 0]
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::index
- # ------------------------------------------------------------------------------
- proc Tree::index { path node } {
- variable $path
- upvar 0 $path data
-
- if { ![string compare $node "root"] || ![info exists data($node)] } {
- return -code error "node \"$node\" does not exist"
- }
- set parent [lindex $data($node) 0]
- return [expr {[lsearch $data($parent) $node] - 1}]
- }
-
-
- # ------------------------------------------------------------------------------
- # Tree::find
- # Returns the node given a position.
- # findInfo @x,y ?confine?
- # lineNumber
- # ------------------------------------------------------------------------------
- proc Tree::find {path findInfo {confine ""}} {
- if {[regexp -- {^@([0-9]+),([0-9]+)$} $findInfo match x y]} {
- set x [$path.c canvasx $x]
- set y [$path.c canvasy $y]
- } elseif {[regexp -- {^[0-9]+$} $findInfo lineNumber]} {
- set dy [Widget::getoption $path -deltay]
- set y [expr {$dy*($lineNumber+0.5)}]
- set confine ""
- } else {
- return -code error "invalid find spec \"$findInfo\""
- }
-
- set found 0
- set region [$path.c bbox all]
- if {[llength $region]} {
- set xi [lindex $region 0]
- set xs [lindex $region 2]
- foreach id [$path.c find overlapping $xi $y $xs $y] {
- set ltags [$path.c gettags $id]
- set item [lindex $ltags 1]
- if { ![string compare $item "node"] ||
- ![string compare $item "img"] ||
- ![string compare $item "win"] } {
- # item is the label or image/window of the node
- set node [Tree::_get_node_name $path $id 2]
- set found 1
- break
- }
- }
- }
-
- if {$found} {
- if {[string compare $confine "confine"] == 0} {
- # test if x stand inside node bbox
- set xi [expr {[lindex [$path.c coords n:$node] 0]-[Widget::cget $path -padx]}]
- set xs [lindex [$path.c bbox n:$node] 2]
- if {$x >= $xi && $x <= $xs} {
- return $node
- }
- } else {
- return $node
- }
- }
- return ""
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::line
- # Returns the line where is drawn a node.
- # ------------------------------------------------------------------------------
- proc Tree::line {path node} {
- set item [$path.c find withtag n:$node]
- if {[string length $item]} {
- set dy [Widget::getoption $path -deltay]
- set y [lindex [$path.c coords $item] 1]
- set line [expr {int($y/$dy)}]
- } else {
- set line -1
- }
- return $line
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::nodes
- # ------------------------------------------------------------------------------
- proc Tree::nodes { path node {first ""} {last ""} } {
- variable $path
- upvar 0 $path data
-
- if { ![info exists data($node)] } {
- return -code error "node \"$node\" does not exist"
- }
-
- if { ![string length $first] } {
- return [lrange $data($node) 1 end]
- }
-
- if { ![string length $last] } {
- return [lindex [lrange $data($node) 1 end] $first]
- } else {
- return [lrange [lrange $data($node) 1 end] $first $last]
- }
- }
-
-
- # Tree::visiblenodes --
- #
- # Retrieve a list of all the nodes in a tree.
- #
- # Arguments:
- # path tree to retrieve nodes for.
- #
- # Results:
- # nodes list of nodes in the tree.
-
- proc Tree::visiblenodes { path } {
- variable $path
- upvar 0 $path data
-
- # Root is always open (?), so all of its children automatically get added
- # to the result, and to the stack.
- set st [lrange $data(root) 1 end]
- set result $st
-
- while { [llength $st] } {
- set node [lindex $st end]
- set st [lreplace $st end end]
- # Danger, danger! Using getMegawidgetOption is fragile, but much
- # much faster than going through cget.
- if { [Widget::getMegawidgetOption $path.$node -open] } {
- set nodes [lrange $data($node) 1 end]
- set result [concat $result $nodes]
- set st [concat $st $nodes]
- }
- }
- return $result
- }
-
- # ------------------------------------------------------------------------------
- # Command Tree::see
- # ------------------------------------------------------------------------------
- proc Tree::see { path node } {
- variable $path
- upvar 0 $path data
-
- if { [Widget::getoption $path -redraw] && $data(upd,afterid) != "" } {
- after cancel $data(upd,afterid)
- _redraw_tree $path
- }
- set idn [$path.c find withtag n:$node]
- if { $idn != "" } {
- Tree::_see $path $idn right
- Tree::_see $path $idn left
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::opentree
- # ------------------------------------------------------------------------------
- proc Tree::opentree { path node } {
- variable $path
- upvar 0 $path data
-
- if { ![string compare $node "root"] || ![info exists data($node)] } {
- return -code error "node \"$node\" does not exist"
- }
-
- _recexpand $path $node 1 [Widget::getoption $path -opencmd]
- _redraw_idle $path 3
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::closetree
- # ------------------------------------------------------------------------------
- proc Tree::closetree { path node } {
- variable $path
- upvar 0 $path data
-
- if { ![string compare $node "root"] || ![info exists data($node)] } {
- return -code error "node \"$node\" does not exist"
- }
-
- _recexpand $path $node 0 [Widget::getoption $path -closecmd]
- _redraw_idle $path 3
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::edit
- # ------------------------------------------------------------------------------
- proc Tree::edit { path node text {verifycmd ""} {clickres 0} {select 1}} {
- variable _edit
- variable $path
- upvar 0 $path data
-
- if { [Widget::getoption $path -redraw] && $data(upd,afterid) != "" } {
- after cancel $data(upd,afterid)
- _redraw_tree $path
- }
- set idn [$path.c find withtag n:$node]
- if { $idn != "" } {
- Tree::_see $path $idn right
- Tree::_see $path $idn left
-
- set oldfg [$path.c itemcget $idn -fill]
- set sbg [Widget::getoption $path -selectbackground]
- set coords [$path.c coords $idn]
- set x [lindex $coords 0]
- set y [lindex $coords 1]
- set bd [expr {[$path.c cget -borderwidth]+[$path.c cget -highlightthickness]}]
- set w [expr {[winfo width $path] - 2*$bd}]
- set wmax [expr {[$path.c canvasx $w]-$x}]
-
- set _edit(text) $text
- set _edit(wait) 0
-
- $path.c itemconfigure $idn -fill [Widget::getoption $path -background]
- $path.c itemconfigure s:$node -fill {} -outline {}
-
- set frame [frame $path.edit \
- -relief flat -borderwidth 0 -highlightthickness 0 \
- -background [Widget::getoption $path -background]]
- set ent [entry $frame.edit \
- -width 0 \
- -relief solid \
- -borderwidth 1 \
- -highlightthickness 0 \
- -foreground [Widget::getoption $path.$node -fill] \
- -background [Widget::getoption $path -background] \
- -selectforeground [Widget::getoption $path -selectforeground] \
- -selectbackground $sbg \
- -font [Widget::getoption $path.$node -font] \
- -textvariable Tree::_edit(text)]
- pack $ent -ipadx 8 -anchor w
-
- set idw [$path.c create window $x $y -window $frame -anchor w]
- trace variable Tree::_edit(text) w "Tree::_update_edit_size $path $ent $idw $wmax"
- tkwait visibility $ent
- grab $frame
- BWidget::focus set $ent
-
- _update_edit_size $path $ent $idw $wmax
- update
- if { $select } {
- $ent selection range 0 end
- $ent icursor end
- $ent xview end
- }
-
- bindtags $ent [list $ent Entry]
- bind $ent <Escape> {set Tree::_edit(wait) 0}
- bind $ent <Return> {set Tree::_edit(wait) 1}
- if { $clickres == 0 || $clickres == 1 } {
- bind $frame <Button> "set Tree::_edit(wait) $clickres"
- }
-
- set ok 0
- while { !$ok } {
- tkwait variable Tree::_edit(wait)
- if { !$_edit(wait) || $verifycmd == "" ||
- [uplevel \#0 $verifycmd [list $_edit(text)]] } {
- set ok 1
- }
- }
-
- trace vdelete Tree::_edit(text) w "Tree::_update_edit_size $path $ent $idw $wmax"
- grab release $frame
- BWidget::focus release $ent
- destroy $frame
- $path.c delete $idw
- $path.c itemconfigure $idn -fill $oldfg
- $path.c itemconfigure s:$node -fill $sbg -outline $sbg
-
- if { $_edit(wait) } {
- return $_edit(text)
- }
- }
- return ""
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::xview
- # ------------------------------------------------------------------------------
- proc Tree::xview { path args } {
- return [eval $path.c xview $args]
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::yview
- # ------------------------------------------------------------------------------
- proc Tree::yview { path args } {
- return [eval $path.c yview $args]
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_update_edit_size
- # ------------------------------------------------------------------------------
- proc Tree::_update_edit_size { path entry idw wmax args } {
- set entw [winfo reqwidth $entry]
- if { $entw+8 >= $wmax } {
- $path.c itemconfigure $idw -width $wmax
- } else {
- $path.c itemconfigure $idw -width 0
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_destroy
- # ------------------------------------------------------------------------------
- proc Tree::_destroy { path } {
- variable $path
- upvar 0 $path data
-
- if { $data(upd,afterid) != "" } {
- after cancel $data(upd,afterid)
- }
- if { $data(dnd,afterid) != "" } {
- after cancel $data(dnd,afterid)
- }
- _subdelete $path [lrange $data(root) 1 end]
- Widget::destroy $path
- unset data
- rename $path {}
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_see
- # ------------------------------------------------------------------------------
- proc Tree::_see { path idn side } {
- set bbox [$path.c bbox $idn]
- set scrl [$path.c cget -scrollregion]
-
- set ymax [lindex $scrl 3]
- set dy [$path.c cget -yscrollincrement]
- set yv [$path yview]
- set yv0 [expr {round([lindex $yv 0]*$ymax/$dy)}]
- set yv1 [expr {round([lindex $yv 1]*$ymax/$dy)}]
- set y [expr {int([lindex [$path.c coords $idn] 1]/$dy)}]
- if { $y < $yv0 } {
- $path.c yview scroll [expr {$y-$yv0}] units
- } elseif { $y >= $yv1 } {
- $path.c yview scroll [expr {$y-$yv1+1}] units
- }
-
- set xmax [lindex $scrl 2]
- set dx [$path.c cget -xscrollincrement]
- set xv [$path xview]
- if { ![string compare $side "right"] } {
- set xv1 [expr {round([lindex $xv 1]*$xmax/$dx)}]
- set x1 [expr {int([lindex $bbox 2]/$dx)}]
- if { $x1 >= $xv1 } {
- $path.c xview scroll [expr {$x1-$xv1+1}] units
- }
- } else {
- set xv0 [expr {round([lindex $xv 0]*$xmax/$dx)}]
- set x0 [expr {int([lindex $bbox 0]/$dx)}]
- if { $x0 < $xv0 } {
- $path.c xview scroll [expr {$x0-$xv0}] units
- }
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_recexpand
- # ------------------------------------------------------------------------------
- proc Tree::_recexpand { path node expand cmd } {
- variable $path
- upvar 0 $path data
-
- if { [Widget::getoption $path.$node -open] != $expand } {
- Widget::setoption $path.$node -open $expand
- if { $cmd != "" } {
- uplevel \#0 $cmd $node
- }
- }
-
- foreach subnode [lrange $data($node) 1 end] {
- _recexpand $path $subnode $expand $cmd
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_subdelete
- # ------------------------------------------------------------------------------
- proc Tree::_subdelete { path lnodes } {
- variable $path
- upvar 0 $path data
-
- while { [llength $lnodes] } {
- set lsubnodes [list]
- foreach node $lnodes {
- foreach subnode [lrange $data($node) 1 end] {
- lappend lsubnodes $subnode
- }
- unset data($node)
- if { [set win [Widget::getoption $path.$node -window]] != "" } {
- destroy $win
- }
- Widget::destroy $path.$node
- }
- set lnodes $lsubnodes
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_update_scrollregion
- # ------------------------------------------------------------------------------
- proc Tree::_update_scrollregion { path } {
- set bd [expr {2*([$path.c cget -borderwidth]+[$path.c cget -highlightthickness])}]
- set w [expr {[winfo width $path] - $bd}]
- set h [expr {[winfo height $path] - $bd}]
- set xinc [$path.c cget -xscrollincrement]
- set yinc [$path.c cget -yscrollincrement]
- set bbox [$path.c bbox node]
- if { [llength $bbox] } {
- set xs [lindex $bbox 2]
- set ys [lindex $bbox 3]
-
- if { $w < $xs } {
- set w [expr {int($xs)}]
- if { [set r [expr {$w % $xinc}]] } {
- set w [expr {$w+$xinc-$r}]
- }
- }
- if { $h < $ys } {
- set h [expr {int($ys)}]
- if { [set r [expr {$h % $yinc}]] } {
- set h [expr {$h+$yinc-$r}]
- }
- }
- }
-
- $path.c configure -scrollregion [list 0 0 $w $h]
-
- if {[Widget::getoption $path -selectfill]} {
- _redraw_selection $path
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_cross_event
- # ------------------------------------------------------------------------------
- proc Tree::_cross_event { path } {
- variable $path
- upvar 0 $path data
-
- set node [Tree::_get_node_name $path current 1]
- if { [Widget::getoption $path.$node -open] } {
- Tree::itemconfigure $path $node -open 0
- if { [set cmd [Widget::getoption $path -closecmd]] != "" } {
- uplevel \#0 $cmd $node
- }
- } else {
- Tree::itemconfigure $path $node -open 1
- if { [set cmd [Widget::getoption $path -opencmd]] != "" } {
- uplevel \#0 $cmd $node
- }
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_draw_node
- # ------------------------------------------------------------------------------
- proc Tree::_draw_node { path node x0 y0 deltax deltay padx showlines } {
- global env
- variable $path
- upvar 0 $path data
-
- set x1 [expr {$x0+$deltax+5}]
- set y1 $y0
- if { $showlines } {
- $path.c create line $x0 $y0 $x1 $y0 \
- -fill [Widget::getoption $path -linesfill] \
- -stipple [Widget::getoption $path -linestipple] \
- -tags line
- }
- $path.c create text [expr {$x1+$padx}] $y0 \
- -text [Widget::getoption $path.$node -text] \
- -fill [Widget::getoption $path.$node -fill] \
- -font [Widget::getoption $path.$node -font] \
- -anchor w \
- -tags "TreeItemSentinal node n:$node"
- set len [expr {[llength $data($node)] > 1}]
- set dc [Widget::getoption $path.$node -drawcross]
- set exp [Widget::getoption $path.$node -open]
-
- if { $len && $exp } {
- set y1 [_draw_subnodes $path [lrange $data($node) 1 end] \
- [expr {$x0+$deltax}] $y0 $deltax $deltay $padx $showlines]
- }
-
- if { [string compare $dc "never"] && ($len || ![string compare $dc "allways"]) } {
- if { $exp } {
- set bmp [file join $::BWIDGET::LIBRARY "images" "minus.xbm"]
- } else {
- set bmp [file join $::BWIDGET::LIBRARY "images" "plus.xbm"]
- }
- $path.c create bitmap $x0 $y0 \
- -bitmap @$bmp \
- -background [$path.c cget -background] \
- -foreground [Widget::getoption $path -linesfill] \
- -tags "cross c:$node" -anchor c
- }
-
- if { [set win [Widget::getoption $path.$node -window]] != "" } {
- $path.c create window $x1 $y0 -window $win -anchor w \
- -tags "TreeItemSentinal win i:$node"
- } elseif { [set img [Widget::getoption $path.$node -image]] != "" } {
- $path.c create image $x1 $y0 -image $img -anchor w \
- -tags "TreeItemSentinal img i:$node"
- }
- return $y1
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_draw_subnodes
- # ------------------------------------------------------------------------------
- proc Tree::_draw_subnodes { path nodes x0 y0 deltax deltay padx showlines } {
- set y1 $y0
- foreach node $nodes {
- set yp $y1
- set y1 [_draw_node $path $node $x0 [expr {$y1+$deltay}] $deltax $deltay $padx $showlines]
- }
- if { $showlines && [llength $nodes] } {
- set id [$path.c create line $x0 $y0 $x0 [expr {$yp+$deltay}] \
- -fill [Widget::getoption $path -linesfill] \
- -stipple [Widget::getoption $path -linestipple] \
- -tags line]
-
- $path.c lower $id
- }
- return $y1
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_update_nodes
- # ------------------------------------------------------------------------------
- proc Tree::_update_nodes { path } {
- global env
- variable $path
- upvar 0 $path data
-
- set deltax [Widget::getoption $path -deltax]
- set padx [Widget::getoption $path -padx]
- foreach {node flag} $data(upd,nodes) {
- set idn [$path.c find withtag "n:$node"]
- if { $idn == "" } {
- continue
- }
- set c [$path.c coords $idn]
- set x0 [expr {[lindex $c 0]-$padx}]
- set y0 [lindex $c 1]
- if { $flag & 48 } {
- # -window or -image modified
- set win [Widget::getoption $path.$node -window]
- set img [Widget::getoption $path.$node -image]
- set idi [$path.c find withtag i:$node]
- set type [lindex [$path.c gettags $idi] 1]
- if { [string length $win] } {
- if { ![string compare $type "win"] } {
- $path.c itemconfigure $idi -window $win
- } else {
- $path.c delete $idi
- $path.c create window $x0 $y0 -window $win -anchor w \
- -tags "TreeItemSentinal win i:$node"
- }
- } elseif { [string length $img] } {
- if { ![string compare $type "img"] } {
- $path.c itemconfigure $idi -image $img
- } else {
- $path.c delete $idi
- $path.c create image $x0 $y0 -image $img -anchor w \
- -tags "TreeItemSentinal img i:$node"
- }
- } else {
- $path.c delete $idi
- }
- }
-
- if { $flag & 8 } {
- # -drawcross modified
- set len [expr {[llength $data($node)] > 1}]
- set dc [Widget::getoption $path.$node -drawcross]
- set exp [Widget::getoption $path.$node -open]
- set idc [$path.c find withtag c:$node]
-
- if { [string compare $dc "never"] && ($len || ![string compare $dc "allways"]) } {
- if { $exp } {
- set bmp [file join $::BWIDGET::LIBRARY "images" "minus.xbm"]
- } else {
- set bmp [file join $::BWIDGET::LIBRARY "images" "plus.xbm"]
- }
- if { $idc == "" } {
- $path.c create bitmap [expr {$x0-$deltax-5}] $y0 \
- -bitmap @$bmp \
- -background [$path.c cget -background] \
- -foreground [Widget::getoption $path -linesfill] \
- -tags "cross c:$node" -anchor c
- } else {
- $path.c itemconfigure $idc -bitmap @$bmp
- }
- } else {
- $path.c delete $idc
- }
- }
-
- if { $flag & 7 } {
- # -font, -text or -fill modified
- $path.c itemconfigure $idn \
- -text [Widget::getoption $path.$node -text] \
- -fill [Widget::getoption $path.$node -fill] \
- -font [Widget::getoption $path.$node -font]
- }
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_draw_tree
- # ------------------------------------------------------------------------------
- proc Tree::_draw_tree { path } {
- variable $path
- upvar 0 $path data
-
- $path.c delete all
- set cursor [$path.c cget -cursor]
- $path.c configure -cursor watch
- _draw_subnodes $path [lrange $data(root) 1 end] 8 \
- [expr {-[Widget::getoption $path -deltay]/2}] \
- [Widget::getoption $path -deltax] \
- [Widget::getoption $path -deltay] \
- [Widget::getoption $path -padx] \
- [Widget::getoption $path -showlines]
- $path.c configure -cursor $cursor
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_redraw_tree
- # ------------------------------------------------------------------------------
- proc Tree::_redraw_tree { path } {
- variable $path
- upvar 0 $path data
-
- if { [Widget::getoption $path -redraw] } {
- if { $data(upd,level) == 2 } {
- _update_nodes $path
- } elseif { $data(upd,level) == 3 } {
- _draw_tree $path
- }
- _redraw_selection $path
- _update_scrollregion $path
- set data(upd,nodes) {}
- set data(upd,level) 0
- set data(upd,afterid) ""
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_redraw_selection
- # ------------------------------------------------------------------------------
- proc Tree::_redraw_selection { path } {
- variable $path
- upvar 0 $path data
-
- set selbg [Widget::getoption $path -selectbackground]
- set selfg [Widget::getoption $path -selectforeground]
- set fill [Widget::getoption $path -selectfill]
- if {$fill} {
- set scroll [$path.c cget -scrollregion]
- if {[llength $scroll]} {
- set xmax [expr {[lindex $scroll 2]-1}]
- } else {
- set xmax [winfo width $path]
- }
- }
- foreach id [$path.c find withtag sel] {
- set node [Tree::_get_node_name $path $id 1]
- $path.c itemconfigure "n:$node" -fill [Widget::getoption $path.$node -fill]
- }
- $path.c delete sel
- foreach node $data(selnodes) {
- set bbox [$path.c bbox "n:$node"]
- if { [llength $bbox] } {
- if {$fill} {
- set bbox [list 0 [lindex $bbox 1] $xmax [lindex $bbox 3]]
- }
- set id [eval $path.c create rectangle $bbox \
- -fill $selbg -outline $selbg -tags [list "sel s:$node"]]
- $path.c itemconfigure "n:$node" -fill $selfg
- $path.c lower $id
- }
- }
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_redraw_idle
- # ------------------------------------------------------------------------------
- proc Tree::_redraw_idle { path level } {
- variable $path
- upvar 0 $path data
-
- if { [Widget::getoption $path -redraw] && $data(upd,afterid) == "" } {
- set data(upd,afterid) [after idle Tree::_redraw_tree $path]
- }
- if { $level > $data(upd,level) } {
- set data(upd,level) $level
- }
- return ""
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_init_drag_cmd
- # ------------------------------------------------------------------------------
- proc Tree::_init_drag_cmd { path X Y top } {
- set path [winfo parent $path]
- set ltags [$path.c gettags current]
- set item [lindex $ltags 1]
- if { ![string compare $item "node"] ||
- ![string compare $item "img"] ||
- ![string compare $item "win"] } {
- set node [Tree::_get_node_name $path current 2]
- if { [set cmd [Widget::getoption $path -draginitcmd]] != "" } {
- return [uplevel \#0 $cmd [list $path $node $top]]
- }
- if { [set type [Widget::getoption $path -dragtype]] == "" } {
- set type "TREE_NODE"
- }
- if { [set img [Widget::getoption $path.$node -image]] != "" } {
- pack [label $top.l -image $img -padx 0 -pady 0]
- }
- return [list $type {copy move link} $node]
- }
- return {}
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_drop_cmd
- # ------------------------------------------------------------------------------
- proc Tree::_drop_cmd { path source X Y op type dnddata } {
- set path [winfo parent $path]
- variable $path
- upvar 0 $path data
-
- $path.c delete drop
- if { [string length $data(dnd,afterid)] } {
- after cancel $data(dnd,afterid)
- set data(dnd,afterid) ""
- }
- set data(dnd,scroll) ""
- if { [llength $data(dnd,node)] } {
- if { [set cmd [Widget::getoption $path -dropcmd]] != "" } {
- return [uplevel \#0 $cmd [list $path $source $data(dnd,node) $op $type $dnddata]]
- }
- }
- return 0
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_over_cmd
- # ------------------------------------------------------------------------------
- proc Tree::_over_cmd { path source event X Y op type dnddata } {
- set path [winfo parent $path]
- variable $path
- upvar 0 $path data
-
- if { ![string compare $event "leave"] } {
- # we leave the window tree
- $path.c delete drop
- if { [string length $data(dnd,afterid)] } {
- after cancel $data(dnd,afterid)
- set data(dnd,afterid) ""
- }
- set data(dnd,scroll) ""
- return 0
- }
-
- if { ![string compare $event "enter"] } {
- # we enter the window tree - dnd data initialization
- set mode [Widget::getoption $path -dropovermode]
- set data(dnd,mode) 0
- foreach c {w p n} {
- set data(dnd,mode) [expr {($data(dnd,mode) << 1) | ([string first $c $mode] != -1)}]
- }
- set bbox [$path.c bbox all]
- if { [llength $bbox] } {
- set data(dnd,xs) [lindex $bbox 2]
- set data(dnd,empty) 0
- } else {
- set data(dnd,xs) 0
- set data(dnd,empty) 1
- }
- set data(dnd,node) {}
- }
-
- set x [expr {$X-[winfo rootx $path]}]
- set y [expr {$Y-[winfo rooty $path]}]
- $path.c delete drop
- set data(dnd,node) {}
-
- # test for auto-scroll unless mode is widget only
- if { $data(dnd,mode) != 4 && [_auto_scroll $path $x $y] != "" } {
- return 2
- }
-
- if { $data(dnd,mode) & 4 } {
- # dropovermode includes widget
- set target [list widget]
- set vmode 4
- } else {
- set target [list ""]
- set vmode 0
- }
- if { ($data(dnd,mode) & 2) && $data(dnd,empty) } {
- # dropovermode includes position and tree is empty
- lappend target [list root 0]
- set vmode [expr {$vmode | 2}]
- }
-
- set xc [$path.c canvasx $x]
- set xs $data(dnd,xs)
- if { $xc <= $xs } {
- set yc [$path.c canvasy $y]
- set dy [$path.c cget -yscrollincrement]
- set line [expr {int($yc/$dy)}]
- set xi 0
- set yi [expr {$line*$dy}]
- set ys [expr {$yi+$dy}]
- set found 0
- foreach id [$path.c find overlapping $xi $yi $xs $ys] {
- set ltags [$path.c gettags $id]
- set item [lindex $ltags 1]
- if { ![string compare $item "node"] ||
- ![string compare $item "img"] ||
- ![string compare $item "win"] } {
- # item is the label or image/window of the node
- set node [Tree::_get_node_name $path $id 2]
- set found 1
- break
- }
- }
- if {$found} {
- set xi [expr {[lindex [$path.c coords n:$node] 0]-[Widget::getoption $path -padx]-1}]
- if { $data(dnd,mode) & 1 } {
- # dropovermode includes node
- lappend target $node
- set vmode [expr {$vmode | 1}]
- } else {
- lappend target ""
- }
-
- if { $data(dnd,mode) & 2 } {
- # dropovermode includes position
- if { $yc >= $yi+$dy/2 } {
- # position is after $node
- if { [Widget::getoption $path.$node -open] &&
- [llength $data($node)] > 1 } {
- # $node is open and have subnodes
- # drop position is 0 in children of $node
- set parent $node
- set index 0
- set xli [expr {$xi-5}]
- } else {
- # $node is not open and doesn't have subnodes
- # drop position is after $node in children of parent of $node
- set parent [lindex $data($node) 0]
- set index [lsearch $data($parent) $node]
- set xli [expr {$xi-[Widget::getoption $path -deltax]-5}]
- }
- set yl $ys
- } else {
- # position is before $node
- # drop position is before $node in children of parent of $node
- set parent [lindex $data($node) 0]
- set index [expr {[lsearch $data($parent) $node] - 1}]
- set xli [expr {$xi-[Widget::getoption $path -deltax]-5}]
- set yl $yi
- }
- lappend target [list $parent $index]
- set vmode [expr {$vmode | 2}]
- } else {
- lappend target {}
- }
-
- if { ($vmode & 3) == 3 } {
- # result have both node and position
- # we compute what is the preferred method
- if { $yc-$yi <= 3 || $ys-$yc <= 3 } {
- lappend target "position"
- } else {
- lappend target "node"
- }
- }
- }
- }
-
- if { $vmode && [set cmd [Widget::getoption $path -dropovercmd]] != "" } {
- # user-defined dropover command
- set res [uplevel \#0 $cmd [list $path $source $target $op $type $dnddata]]
- set code [lindex $res 0]
- set newmode 0
- if { $code & 1 } {
- # update vmode
- set mode [lindex $res 1]
- if { ($vmode & 1) && ![string compare $mode "node"] } {
- set newmode 1
- } elseif { ($vmode & 2) && ![string compare $mode "position"] } {
- set newmode 2
- } elseif { ($vmode & 4) && ![string compare $mode "widget"] } {
- set newmode 4
- }
- }
- set vmode $newmode
- } else {
- if { ($vmode & 3) == 3 } {
- # result have both item and position
- # we choose the preferred method
- if { ![string compare [lindex $target 3] "position"] } {
- set vmode [expr {$vmode & ~1}]
- } else {
- set vmode [expr {$vmode & ~2}]
- }
- }
-
- if { $data(dnd,mode) == 4 || $data(dnd,mode) == 0 } {
- # dropovermode is widget or empty - recall is not necessary
- set code 1
- } else {
- set code 3
- }
- }
-
- if {!$data(dnd,empty)} {
- # draw dnd visual following vmode
- if { $vmode & 1 } {
- set data(dnd,node) [list "node" [lindex $target 1]]
- $path.c create rectangle $xi $yi $xs $ys -tags drop
- } elseif { $vmode & 2 } {
- set data(dnd,node) [concat "position" [lindex $target 2]]
- $path.c create line $xli [expr {$yl-$dy/2}] $xli $yl $xs $yl -tags drop
- } elseif { $vmode & 4 } {
- set data(dnd,node) [list "widget"]
- } else {
- set code [expr {$code & 2}]
- }
- }
-
- if { $code & 1 } {
- DropSite::setcursor based_arrow_down
- } else {
- DropSite::setcursor dot
- }
- return $code
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_auto_scroll
- # ------------------------------------------------------------------------------
- proc Tree::_auto_scroll { path x y } {
- variable $path
- upvar 0 $path data
-
- set xmax [winfo width $path]
- set ymax [winfo height $path]
- set scroll {}
- if { $y <= 6 } {
- if { [lindex [$path.c yview] 0] > 0 } {
- set scroll [list yview -1]
- DropSite::setcursor sb_up_arrow
- }
- } elseif { $y >= $ymax-6 } {
- if { [lindex [$path.c yview] 1] < 1 } {
- set scroll [list yview 1]
- DropSite::setcursor sb_down_arrow
- }
- } elseif { $x <= 6 } {
- if { [lindex [$path.c xview] 0] > 0 } {
- set scroll [list xview -1]
- DropSite::setcursor sb_left_arrow
- }
- } elseif { $x >= $xmax-6 } {
- if { [lindex [$path.c xview] 1] < 1 } {
- set scroll [list xview 1]
- DropSite::setcursor sb_right_arrow
- }
- }
-
- if { [string length $data(dnd,afterid)] && [string compare $data(dnd,scroll) $scroll] } {
- after cancel $data(dnd,afterid)
- set data(dnd,afterid) ""
- }
-
- set data(dnd,scroll) $scroll
- if { [string length $scroll] && ![string length $data(dnd,afterid)] } {
- set data(dnd,afterid) [after 200 Tree::_scroll $path $scroll]
- }
- return $data(dnd,afterid)
- }
-
-
- # ------------------------------------------------------------------------------
- # Command Tree::_scroll
- # ------------------------------------------------------------------------------
- proc Tree::_scroll { path cmd dir } {
- variable $path
- upvar 0 $path data
-
- if { ($dir == -1 && [lindex [$path.c $cmd] 0] > 0) ||
- ($dir == 1 && [lindex [$path.c $cmd] 1] < 1) } {
- $path.c $cmd scroll $dir units
- set data(dnd,afterid) [after 100 Tree::_scroll $path $cmd $dir]
- } else {
- set data(dnd,afterid) ""
- DropSite::setcursor dot
- }
- }
-
- # Tree::_keynav --
- #
- # Handle navigational keypresses on the tree.
- #
- # Arguments:
- # which tag indicating the direction of motion:
- # up move to the node graphically above current
- # down move to the node graphically below current
- # left close current if open, else move to parent
- # right open current if closed, else move to child
- # open open current if closed, close current if open
- # win name of the tree widget
- #
- # Results:
- # None.
-
- proc Tree::_keynav {which win} {
- # Keyboard navigation is riddled with special cases. In order to avoid
- # the complex logic, we will instead make a list of all the visible,
- # selectable nodes, then do a simple next or previous operation.
-
- # One easy way to get all of the visible nodes is to query the canvas
- # object for all the items with the "node" tag; since the tree is always
- # completely redrawn, this list will be in vertical order.
- set nodes {}
- foreach nodeItem [$win.c find withtag node] {
- set node [Tree::_get_node_name $win $nodeItem 2]
- if { [Widget::cget $win.$node -selectable] } {
- lappend nodes $node
- }
- }
-
- # Keyboard navigation is all relative to the current node
- # surles: Get the current node for single or multiple selection schemas.
- set node [_get_current_node $win]
-
- switch -exact -- $which {
- "up" {
- # Up goes to the node that is vertically above the current node
- # (NOT necessarily the current node's parent)
- if { [string equal $node ""] } {
- return
- }
- set index [lsearch $nodes $node]
- incr index -1
- if { $index >= 0 } {
- $win selection set [lindex $nodes $index]
- _set_current_node $win [lindex $nodes $index]
- $win see [lindex $nodes $index]
- return
- }
- }
- "down" {
- # Down goes to the node that is vertically below the current node
- if { [string equal $node ""] } {
- $win selection set [lindex $nodes 0]
- _set_current_node $win [lindex $nodes 0]
- $win see [lindex $nodes 0]
- return
- }
-
- set index [lsearch $nodes $node]
- incr index
- if { $index < [llength $nodes] } {
- $win selection set [lindex $nodes $index]
- _set_current_node $win [lindex $nodes $index]
- $win see [lindex $nodes $index]
- return
- }
- }
- "right" {
- # On a right arrow, if the current node is closed, open it.
- # If the current node is open, go to its first child
- if { [string equal $node ""] } {
- return
- }
- set open [$win itemcget $node -open]
- if { $open } {
- if { [llength [$win nodes $node]] } {
- set index [lsearch $nodes $node]
- incr index
- if { $index < [llength $nodes] } {
- $win selection set [lindex $nodes $index]
- _set_current_node $win [lindex $nodes $index]
- $win see [lindex $nodes $index]
- return
- }
- }
- } else {
- $win itemconfigure $node -open 1
- if { [set cmd [Widget::getoption $win -opencmd]] != "" } {
- uplevel \#0 $cmd $node
- }
- return
- }
- }
- "left" {
- # On a left arrow, if the current node is open, close it.
- # If the current node is closed, go to its parent.
- if { [string equal $node ""] } {
- return
- }
- set open [$win itemcget $node -open]
- if { $open } {
- $win itemconfigure $node -open 0
- if { [set cmd [Widget::getoption $win -closecmd]] != "" } {
- uplevel \#0 $cmd $node
- }
- return
- } else {
- set parent [$win parent $node]
- if { [string equal $parent "root"] } {
- set parent $node
- } else {
- while { ![$win itemcget $parent -selectable] } {
- set parent [$win parent $parent]
- if { [string equal $parent "root"] } {
- set parent $node
- break
- }
- }
- }
- $win selection set $parent
- _set_current_node $win $parent
- $win see $parent
- return
- }
- }
- "space" {
- if { [string equal $node ""] } {
- return
- }
- set open [$win itemcget $node -open]
- if { [llength [$win nodes $node]] } {
-
- # Toggle the open status of the chosen node.
-
- $win itemconfigure $node -open [expr {$open?0:1}]
-
- if {$open} {
- # Node was open, is now closed. Call the close-cmd
-
- if { [set cmd [Widget::getoption $win -closecmd]] != "" } {
- uplevel \#0 $cmd $node
- }
- } else {
- # Node was closed, is now open. Call the open-cmd
-
- if { [set cmd [Widget::getoption $win -opencmd]] != "" } {
- uplevel \#0 $cmd $node
- }
- }
- }
- }
- }
- return
- }
-
- # Tree::_get_current_node --
- #
- # Get the current node for either single or multiple
- # node selection trees. If the tree allows for
- # multiple selection, return the cursor node. Otherwise,
- # if there is a selection, return the first node in the
- # list. If there is no selection, return the root node.
- #
- # arguments:
- # win name of the tree widget
- #
- # Results:
- # The current node.
-
- proc Tree::_get_current_node {win} {
- if {[info exists selectTree::selectCursor($win)]} {
- set result $selectTree::selectCursor($win)
- } elseif {[set selList [$win selection get]] != {}} {
- set result [lindex $selList 0]
- } else {
- set result ""
- }
- return $result
- }
-
- # Tree::_set_current_node --
- #
- # Set the current node for either single or multiple
- # node selection trees.
- #
- # arguments:
- # win Name of the tree widget
- # node The current node.
- #
- # Results:
- # None.
-
- proc Tree::_set_current_node {win node} {
- if {[info exists selectTree::selectCursor($win)]} {
- set selectTree::selectCursor($win) $node
- }
- return
- }
-
- # Tree::_get_node_name --
- #
- # Given a canvas item, get the name of the tree node represented by that
- # item.
- #
- # Arguments:
- # path tree to query
- # item Optional canvas item to examine; if omitted,
- # defaults to "current"
- # tagindex Optional tag index, since the n:nodename tag is not
- # in the same spot for all canvas items. If omitted,
- # defaults to "end-1", so it works with "current" item.
- #
- # Results:
- # node name of the tree node.
-
- proc Tree::_get_node_name {path {item current} {tagindex end-1}} {
- return [string range [lindex [$path.c gettags $item] $tagindex] 2 end]
- }
-
-