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# | |
# tkdnd_generic.tcl -- | |
# | |
# This file implements some utility procedures that are used by the TkDND | |
# package. | |
# | |
# This software is copyrighted by: | |
# George Petasis, National Centre for Scientific Research "Demokritos", | |
# Aghia Paraskevi, Athens, Greece. | |
# e-mail: [email protected] | |
# | |
# The following terms apply to all files associated | |
# with the software unless explicitly disclaimed in individual files. | |
# | |
# The authors hereby grant permission to use, copy, modify, distribute, | |
# and license this software and its documentation for any purpose, provided | |
# that existing copyright notices are retained in all copies and that this | |
# notice is included verbatim in any distributions. No written agreement, | |
# license, or royalty fee is required for any of the authorized uses. | |
# Modifications to this software may be copyrighted by their authors | |
# and need not follow the licensing terms described here, provided that | |
# the new terms are clearly indicated on the first page of each file where | |
# they apply. | |
# | |
# IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY | |
# FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES | |
# ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY | |
# DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE | |
# POSSIBILITY OF SUCH DAMAGE. | |
# | |
# THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, | |
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, | |
# FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE | |
# IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE | |
# NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR | |
# MODIFICATIONS. | |
# | |
namespace eval generic { | |
variable _types {} | |
variable _typelist {} | |
variable _codelist {} | |
variable _actionlist {} | |
variable _pressedkeys {} | |
variable _pressedmods {} | |
variable _action {} | |
variable _common_drag_source_types {} | |
variable _common_drop_target_types {} | |
variable _drag_source {} | |
variable _drop_target {} | |
variable _last_mouse_root_x 0 | |
variable _last_mouse_root_y 0 | |
variable _tkdnd2platform | |
variable _platform2tkdnd | |
variable _integer_test entier | |
if {[catch {string is entier 1234}]} { | |
set _integer_test integer | |
} | |
proc debug { msg } { | |
tkdnd::debug $msg | |
};# debug | |
proc initialise { } { | |
};# initialise | |
proc initialise_platform_to_tkdnd_types { types } { | |
variable _platform2tkdnd | |
variable _tkdnd2platform | |
# set _platform2tkdnd [dict create {*}$types] ;# {*} not available in 8.4 | |
set _platform2tkdnd [dict create] | |
foreach {p t} $types { | |
dict set _platform2tkdnd $p $t | |
} | |
set _tkdnd2platform [dict create] | |
foreach type [dict keys $_platform2tkdnd] { | |
dict lappend _tkdnd2platform [dict get $_platform2tkdnd $type] $type | |
} | |
};# initialise_platform_to_tkdnd_types | |
proc initialise_tkdnd_to_platform_types { types } { | |
variable _tkdnd2platform | |
# set _tkdnd2platform [dict create {*}$types] ;# {*} not available in 8.4 | |
set _tkdnd2platform [dict create] | |
foreach {t p} $types { | |
dict set _tkdnd2platform $t $p | |
} | |
};# initialise_tkdnd_to_platform_types | |
};# namespace generic | |
# ---------------------------------------------------------------------------- | |
# Command generic::SetPressedKeys | |
# ---------------------------------------------------------------------------- | |
proc generic::SetPressedKeys { pressedkeys } { | |
variable _pressedkeys | |
variable _pressedmods | |
variable _integer_test | |
set keys {} | |
set mods {} | |
foreach {b} $pressedkeys { | |
if {[string is $_integer_test -strict $b]} { | |
lappend keys $b | |
} else { | |
lappend mods $b | |
} | |
} | |
set _pressedkeys $keys | |
set _pressedmods $mods | |
};# generic::SetPressedKeys | |
# ---------------------------------------------------------------------------- | |
# Command generic::HandleEnter | |
# ---------------------------------------------------------------------------- | |
proc generic::HandleEnter { drop_target drag_source typelist codelist | |
actionlist pressedkeys } { | |
variable _typelist; set _typelist $typelist | |
variable _action; set _action refuse_drop | |
variable _common_drag_source_types; set _common_drag_source_types {} | |
variable _common_drop_target_types; set _common_drop_target_types {} | |
variable _actionlist | |
variable _drag_source; set _drag_source $drag_source | |
variable _drop_target; set _drop_target {} | |
variable _actionlist; set _actionlist $actionlist | |
variable _codelist set _codelist $codelist | |
variable _last_mouse_root_x; set _last_mouse_root_x 0 | |
variable _last_mouse_root_y; set _last_mouse_root_y 0 | |
SetPressedKeys $pressedkeys | |
#DBG debug "\n===============================================================" | |
#DBG debug "generic::HandleEnter: drop_target=$drop_target,\ | |
#DBG drag_source=$drag_source,\ | |
#DBG typelist=$typelist" | |
#DBG debug "generic::HandleEnter: ACTION: default" | |
return default | |
};# generic::HandleEnter | |
# ---------------------------------------------------------------------------- | |
# Command generic::HandlePosition | |
# ---------------------------------------------------------------------------- | |
proc generic::HandlePosition { drop_target drag_source pressedkeys | |
rootX rootY { action {} } { time 0 } } { | |
variable _types | |
variable _typelist | |
variable _codelist | |
variable _actionlist | |
variable _pressedkeys | |
variable _pressedmods | |
variable _action | |
variable _common_drag_source_types | |
variable _common_drop_target_types | |
variable _drag_source | |
variable _drop_target | |
variable _last_mouse_root_x; set _last_mouse_root_x $rootX | |
variable _last_mouse_root_y; set _last_mouse_root_y $rootY | |
#DBG debug "generic::HandlePosition: drop_target=$drop_target,\ | |
#DBG _drop_target=$_drop_target, rootX=$rootX, rootY=$rootY" | |
if {![info exists _drag_source] || ![string length $_drag_source]} { | |
#DBG debug "generic::HandlePosition: no or empty _drag_source:\ | |
#DBG return refuse_drop" | |
return refuse_drop | |
} | |
if {$drag_source ne "" && $drag_source ne $_drag_source} { | |
#DBG debug "generic position event from unexpected source: $_drag_source\ | |
#DBG != $drag_source" | |
return refuse_drop | |
} | |
SetPressedKeys $pressedkeys | |
## Does the new drop target support any of our new types? | |
# foreach {common_drag_source_types common_drop_target_types} \ | |
# [GetWindowCommonTypes $drop_target $_typelist] {break} | |
foreach {drop_target common_drag_source_types common_drop_target_types} \ | |
[FindWindowWithCommonTypes $drop_target $_typelist] {break} | |
set data [GetDroppedData $time] | |
#DBG debug "\t($_drop_target) -> ($drop_target)" | |
if {$drop_target != $_drop_target} { | |
if {[string length $_drop_target]} { | |
## Call the <<DropLeave>> event. | |
#DBG debug "\t<<DropLeave>> on $_drop_target" | |
set cmd [bind $_drop_target <<DropLeave>>] | |
if {[string length $cmd]} { | |
set widgetX 0; set widgetY 0 | |
catch {set widgetX [expr {$rootX - [winfo rootx $_drop_target]}]} | |
catch {set widgetY [expr {$rootY - [winfo rooty $_drop_target]}]} | |
set cmd [string map [list %W [list $_drop_target] \ | |
%X $rootX %Y $rootY %x $widgetX %y $widgetY \ | |
%CST \{$_common_drag_source_types\} \ | |
%CTT \{$_common_drop_target_types\} \ | |
%CPT \{[lindex [platform_independent_type [lindex $_common_drag_source_types 0]] 0]\} \ | |
%ST \{$_typelist\} %TT \{$_types\} \ | |
%A \{$_action\} %a \{$_actionlist\} \ | |
%b \{$_pressedkeys\} %m \{$_pressedmods\} \ | |
%D \{\} %e <<DropLeave>> \ | |
%L \{$_typelist\} %% % \ | |
%t \{$_typelist\} %T \{[lindex $_common_drag_source_types 0]\} \ | |
%c \{$_codelist\} %C \{[lindex $_codelist 0]\} \ | |
] $cmd] | |
uplevel \#0 $cmd | |
} | |
} | |
set _drop_target $drop_target | |
set _action refuse_drop | |
if {[llength $common_drag_source_types]} { | |
switch -exact -- $action { | |
default - {} { set _action [lindex $_actionlist 0] } | |
default { set _action $action } | |
} | |
set _common_drag_source_types $common_drag_source_types | |
set _common_drop_target_types $common_drop_target_types | |
## Drop target supports at least one type. Send a <<DropEnter>>. | |
#DBG debug "<<DropEnter>> -> $drop_target" | |
set cmd [bind $drop_target <<DropEnter>>] | |
if {[string length $cmd]} { | |
set widgetX 0; set widgetY 0 | |
catch {set widgetX [expr {$rootX - [winfo rootx $drop_target]}]} | |
catch {set widgetY [expr {$rootY - [winfo rooty $drop_target]}]} | |
focus $drop_target | |
set cmd [string map [list %W [list $drop_target] \ | |
%X $rootX %Y $rootY %x $widgetX %y $widgetY \ | |
%CST \{$_common_drag_source_types\} \ | |
%CTT \{$_common_drop_target_types\} \ | |
%CPT \{[lindex [platform_independent_type [lindex $_common_drag_source_types 0]] 0]\} \ | |
%ST \{$_typelist\} %TT \{$_types\} \ | |
%A $_action %a \{$_actionlist\} \ | |
%b \{$_pressedkeys\} %m \{$_pressedmods\} \ | |
%D [list $data] %e <<DropEnter>> \ | |
%L \{$_typelist\} %% % \ | |
%t \{$_typelist\} %T \{[lindex $_common_drag_source_types 0]\} \ | |
%c \{$_codelist\} %C \{[lindex $_codelist 0]\} \ | |
] $cmd] | |
set _action [uplevel \#0 $cmd] | |
switch -exact -- $_action { | |
copy - move - link - ask - private - refuse_drop - default {} | |
default {set _action copy} | |
} | |
} | |
} | |
} | |
set _drop_target {} | |
if {[llength $common_drag_source_types]} { | |
set _common_drag_source_types $common_drag_source_types | |
set _common_drop_target_types $common_drop_target_types | |
set _drop_target $drop_target | |
## Drop target supports at least one type. Send a <<DropPosition>>. | |
set cmd [bind $drop_target <<DropPosition>>] | |
if {[string length $cmd]} { | |
switch -exact -- $action { | |
default - {} { set _action [lindex $_actionlist 0] } | |
default { set _action $action } | |
} | |
set widgetX 0; set widgetY 0 | |
catch {set widgetX [expr {$rootX - [winfo rootx $drop_target]}]} | |
catch {set widgetY [expr {$rootY - [winfo rooty $drop_target]}]} | |
set cmd [string map [list %W [list $drop_target] \ | |
%X $rootX %Y $rootY %x $widgetX %y $widgetY \ | |
%CST \{$_common_drag_source_types\} \ | |
%CTT \{$_common_drop_target_types\} \ | |
%CPT \{[lindex [platform_independent_type [lindex $_common_drag_source_types 0]] 0]\} \ | |
%ST \{$_typelist\} %TT \{$_types\} \ | |
%A $_action %a \{$_actionlist\} \ | |
%b \{$_pressedkeys\} %m \{$_pressedmods\} \ | |
%D [list $data] %e <<DropPosition>> \ | |
%L \{$_typelist\} %% % \ | |
%t \{$_typelist\} %T \{[lindex $_common_drag_source_types 0]\} \ | |
%c \{$_codelist\} %C \{[lindex $_codelist 0]\} \ | |
] $cmd] | |
set _action [uplevel \#0 $cmd] | |
} | |
} | |
# Return values: copy, move, link, ask, private, refuse_drop, default | |
#DBG debug "generic::HandlePosition: ACTION: $_action" | |
switch -exact -- $_action { | |
copy - move - link - ask - private - refuse_drop - default {} | |
default {set _action copy} | |
} | |
return $_action | |
};# generic::HandlePosition | |
# ---------------------------------------------------------------------------- | |
# Command generic::HandleLeave | |
# ---------------------------------------------------------------------------- | |
proc generic::HandleLeave { } { | |
variable _types | |
variable _typelist | |
variable _codelist | |
variable _actionlist | |
variable _pressedkeys | |
variable _pressedmods | |
variable _action | |
variable _common_drag_source_types | |
variable _common_drop_target_types | |
variable _drag_source | |
variable _drop_target | |
variable _last_mouse_root_x | |
variable _last_mouse_root_y | |
if {![info exists _drop_target]} {set _drop_target {}} | |
#DBG debug "generic::HandleLeave: _drop_target=$_drop_target" | |
if {[info exists _drop_target] && [string length $_drop_target]} { | |
set cmd [bind $_drop_target <<DropLeave>>] | |
if {[string length $cmd]} { | |
set widgetX 0; set widgetY 0 | |
catch {set widgetX [expr {$_last_mouse_root_x - [winfo rootx $_drop_target]}]} | |
catch {set widgetY [expr {$_last_mouse_root_y - [winfo rooty $_drop_target]}]} | |
set cmd [string map [list %W [list $_drop_target] \ | |
%X $_last_mouse_root_x %Y $_last_mouse_root_y %x $widgetX %y $widgetY \ | |
%CST \{$_common_drag_source_types\} \ | |
%CTT \{$_common_drop_target_types\} \ | |
%CPT \{[lindex [platform_independent_type [lindex $_common_drag_source_types 0]] 0]\} \ | |
%ST \{$_typelist\} %TT \{$_types\} \ | |
%A \{$_action\} %a \{$_actionlist\} \ | |
%b \{$_pressedkeys\} %m \{$_pressedmods\} \ | |
%D \{\} %e <<DropLeave>> \ | |
%L \{$_typelist\} %% % \ | |
%t \{$_typelist\} %T \{[lindex $_common_drag_source_types 0]\} \ | |
%c \{$_codelist\} %C \{[lindex $_codelist 0]\} \ | |
] $cmd] | |
set _action [uplevel \#0 $cmd] | |
} | |
} | |
foreach var {_types _typelist _actionlist _pressedkeys _pressedmods _action | |
_common_drag_source_types _common_drop_target_types | |
_drag_source _drop_target} { | |
set $var {} | |
} | |
};# generic::HandleLeave | |
# ---------------------------------------------------------------------------- | |
# Command generic::HandleDrop | |
# ---------------------------------------------------------------------------- | |
proc generic::HandleDrop {drop_target drag_source pressedkeys rootX rootY time } { | |
variable _types | |
variable _typelist | |
variable _codelist | |
variable _actionlist | |
variable _pressedkeys | |
variable _pressedmods | |
variable _action | |
variable _common_drag_source_types | |
variable _common_drop_target_types | |
variable _drag_source | |
variable _drop_target | |
variable _last_mouse_root_x | |
variable _last_mouse_root_y | |
variable _last_mouse_root_x; set _last_mouse_root_x $rootX | |
variable _last_mouse_root_y; set _last_mouse_root_y $rootY | |
SetPressedKeys $pressedkeys | |
#DBG debug "generic::HandleDrop: $time" | |
if {![info exists _drag_source] && ![string length $_drag_source]} { | |
return refuse_drop | |
} | |
if {![info exists _drop_target] && ![string length $_drop_target]} { | |
return refuse_drop | |
} | |
if {![llength $_common_drag_source_types]} {return refuse_drop} | |
## Get the dropped data. | |
set data [GetDroppedData $time] | |
## Try to select the most specific <<Drop>> event. | |
foreach type [concat $_common_drag_source_types $_common_drop_target_types] { | |
set type [platform_independent_type $type] | |
set cmd [bind $_drop_target <<Drop:$type>>] | |
if {[string length $cmd]} { | |
set widgetX 0; set widgetY 0 | |
catch {set widgetX [expr {$rootX - [winfo rootx $_drop_target]}]} | |
catch {set widgetY [expr {$rootY - [winfo rooty $_drop_target]}]} | |
set cmd [string map [list %W [list $_drop_target] \ | |
%X $rootX %Y $rootY %x $widgetX %y $widgetY \ | |
%CST \{$_common_drag_source_types\} \ | |
%CTT \{$_common_drop_target_types\} \ | |
%CPT \{[lindex [platform_independent_type [lindex $_common_drag_source_types 0]] 0]\} \ | |
%ST \{$_typelist\} %TT \{$_types\} \ | |
%A $_action %a \{$_actionlist\} \ | |
%b \{$_pressedkeys\} %m \{$_pressedmods\} \ | |
%D [list $data] %e <<Drop:$type>> \ | |
%L \{$_typelist\} %% % \ | |
%t \{$_typelist\} %T \{[lindex $_common_drag_source_types 0]\} \ | |
%c \{$_codelist\} %C \{[lindex $_codelist 0]\} \ | |
] $cmd] | |
set _action [uplevel \#0 $cmd] | |
# Return values: copy, move, link, ask, private, refuse_drop | |
switch -exact -- $_action { | |
copy - move - link - ask - private - refuse_drop - default {} | |
default {set _action copy} | |
} | |
return $_action | |
} | |
} | |
set cmd [bind $_drop_target <<Drop>>] | |
if {[string length $cmd]} { | |
set widgetX 0; set widgetY 0 | |
catch {set widgetX [expr {$rootX - [winfo rootx $_drop_target]}]} | |
catch {set widgetY [expr {$rootY - [winfo rooty $_drop_target]}]} | |
set cmd [string map [list %W [list $_drop_target] \ | |
%X $rootX %Y $rootY %x $widgetX %y $widgetY \ | |
%CST \{$_common_drag_source_types\} \ | |
%CTT \{$_common_drop_target_types\} \ | |
%CPT \{[lindex [platform_independent_type [lindex $_common_drag_source_types 0]] 0]\} \ | |
%ST \{$_typelist\} %TT \{$_types\} \ | |
%A $_action %a \{$_actionlist\} \ | |
%b \{$_pressedkeys\} %m \{$_pressedmods\} \ | |
%D [list $data] %e <<Drop>> \ | |
%L \{$_typelist\} %% % \ | |
%t \{$_typelist\} %T \{[lindex $_common_drag_source_types 0]\} \ | |
%c \{$_codelist\} %C \{[lindex $_codelist 0]\} \ | |
] $cmd] | |
set _action [uplevel \#0 $cmd] | |
} | |
# Return values: copy, move, link, ask, private, refuse_drop | |
switch -exact -- $_action { | |
copy - move - link - ask - private - refuse_drop - default {} | |
default {set _action copy} | |
} | |
return $_action | |
};# generic::HandleDrop | |
# ---------------------------------------------------------------------------- | |
# Command generic::GetWindowCommonTypes | |
# ---------------------------------------------------------------------------- | |
proc generic::GetWindowCommonTypes { win typelist } { | |
set types [bind $win <<DropTargetTypes>>] | |
#DBG debug ">> Accepted types: $win $_types" | |
set common_drag_source_types {} | |
set common_drop_target_types {} | |
if {[llength $types]} { | |
## Examine the drop target types, to find at least one match with the drag | |
## source types... | |
set supported_types [supported_types $typelist] | |
foreach type $types { | |
foreach matched [lsearch -glob -all -inline $supported_types $type] { | |
## Drop target supports this type. | |
lappend common_drag_source_types $matched | |
lappend common_drop_target_types $type | |
} | |
} | |
} | |
list $common_drag_source_types $common_drop_target_types | |
};# generic::GetWindowCommonTypes | |
# ---------------------------------------------------------------------------- | |
# Command generic::FindWindowWithCommonTypes | |
# ---------------------------------------------------------------------------- | |
proc generic::FindWindowWithCommonTypes { win typelist } { | |
set toplevel [winfo toplevel $win] | |
while {![string equal $win $toplevel]} { | |
foreach {common_drag_source_types common_drop_target_types} \ | |
[GetWindowCommonTypes $win $typelist] {break} | |
if {[llength $common_drag_source_types]} { | |
return [list $win $common_drag_source_types $common_drop_target_types] | |
} | |
set win [winfo parent $win] | |
} | |
## We have reached the toplevel, which may be also a target (SF Bug #30) | |
foreach {common_drag_source_types common_drop_target_types} \ | |
[GetWindowCommonTypes $win $typelist] {break} | |
if {[llength $common_drag_source_types]} { | |
return [list $win $common_drag_source_types $common_drop_target_types] | |
} | |
return { {} {} {} } | |
};# generic::FindWindowWithCommonTypes | |
# ---------------------------------------------------------------------------- | |
# Command generic::GetDroppedData | |
# ---------------------------------------------------------------------------- | |
proc generic::GetDroppedData { time } { | |
variable _dropped_data | |
return $_dropped_data | |
};# generic::GetDroppedData | |
# ---------------------------------------------------------------------------- | |
# Command generic::SetDroppedData | |
# ---------------------------------------------------------------------------- | |
proc generic::SetDroppedData { data } { | |
variable _dropped_data | |
set _dropped_data $data | |
};# generic::SetDroppedData | |
# ---------------------------------------------------------------------------- | |
# Command generic::GetDragSource | |
# ---------------------------------------------------------------------------- | |
proc generic::GetDragSource { } { | |
variable _drag_source | |
return $_drag_source | |
};# generic::GetDragSource | |
# ---------------------------------------------------------------------------- | |
# Command generic::GetDropTarget | |
# ---------------------------------------------------------------------------- | |
proc generic::GetDropTarget { } { | |
variable _drop_target | |
return $_drop_target | |
};# generic::GetDropTarget | |
# ---------------------------------------------------------------------------- | |
# Command generic::GetDragSourceCommonTypes | |
# ---------------------------------------------------------------------------- | |
proc generic::GetDragSourceCommonTypes { } { | |
variable _common_drag_source_types | |
return $_common_drag_source_types | |
};# generic::GetDragSourceCommonTypes | |
# ---------------------------------------------------------------------------- | |
# Command generic::GetDropTargetCommonTypes | |
# ---------------------------------------------------------------------------- | |
proc generic::GetDropTargetCommonTypes { } { | |
variable _common_drag_source_types | |
return $_common_drag_source_types | |
};# generic::GetDropTargetCommonTypes | |
# ---------------------------------------------------------------------------- | |
# Command generic::platform_specific_types | |
# ---------------------------------------------------------------------------- | |
proc generic::platform_specific_types { types } { | |
set new_types {} | |
foreach type $types { | |
set new_types [concat $new_types [platform_specific_type $type]] | |
} | |
return $new_types | |
}; # generic::platform_specific_types | |
# ---------------------------------------------------------------------------- | |
# Command generic::platform_specific_type | |
# ---------------------------------------------------------------------------- | |
proc generic::platform_specific_type { type } { | |
variable _tkdnd2platform | |
if {[dict exists $_tkdnd2platform $type]} { | |
return [dict get $_tkdnd2platform $type] | |
} | |
list $type | |
}; # generic::platform_specific_type | |
# ---------------------------------------------------------------------------- | |
# Command generic::platform_independent_types | |
# ---------------------------------------------------------------------------- | |
proc generic::platform_independent_types { types } { | |
set new_types {} | |
foreach type $types { | |
set new_types [concat $new_types [platform_independent_type $type]] | |
} | |
return $new_types | |
}; # generic::platform_independent_types | |
# ---------------------------------------------------------------------------- | |
# Command generic::platform_independent_type | |
# ---------------------------------------------------------------------------- | |
proc generic::platform_independent_type { type } { | |
variable _platform2tkdnd | |
if {[dict exists $_platform2tkdnd $type]} { | |
return [dict get $_platform2tkdnd $type] | |
} | |
return $type | |
}; # generic::platform_independent_type | |
# ---------------------------------------------------------------------------- | |
# Command generic::supported_types | |
# ---------------------------------------------------------------------------- | |
proc generic::supported_types { types } { | |
set new_types {} | |
foreach type $types { | |
if {[supported_type $type]} {lappend new_types $type} | |
} | |
return $new_types | |
}; # generic::supported_types | |
# ---------------------------------------------------------------------------- | |
# Command generic::supported_type | |
# ---------------------------------------------------------------------------- | |
proc generic::supported_type { type } { | |
variable _platform2tkdnd | |
if {[dict exists $_platform2tkdnd $type]} { | |
return 1 | |
} | |
return 0 | |
}; # generic::supported_type | |