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#
# tkdnd_compat.tcl --
#
# This file implements some utility procedures, to support older versions
# of the TkDND package.
#
# This software is copyrighted by:
# George Petasis, National Centre for Scientific Research "Demokritos",
# Aghia Paraskevi, Athens, Greece.
# e-mail: petasis@iit.demokritos.gr
#
# 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 compat {
};# namespace compat
# ----------------------------------------------------------------------------
# Command ::dnd
# ----------------------------------------------------------------------------
proc ::dnd {method window args} {
switch $method {
bindtarget {
switch [llength $args] {
0 {return [tkdnd::compat::bindtarget0 $window]}
1 {return [tkdnd::compat::bindtarget1 $window [lindex $args 0]]}
2 {return [tkdnd::compat::bindtarget2 $window [lindex $args 0] \
[lindex $args 1]]}
3 {return [tkdnd::compat::bindtarget3 $window [lindex $args 0] \
[lindex $args 1] [lindex $args 2]]}
4 {return [tkdnd::compat::bindtarget4 $window [lindex $args 0] \
[lindex $args 1] [lindex $args 2] [lindex $args 3]]}
}
}
cleartarget {
return [tkdnd::compat::cleartarget $window]
}
bindsource {
switch [llength $args] {
0 {return [tkdnd::compat::bindsource0 $window]}
1 {return [tkdnd::compat::bindsource1 $window [lindex $args 0]]}
2 {return [tkdnd::compat::bindsource2 $window [lindex $args 0] \
[lindex $args 1]]}
3 {return [tkdnd::compat::bindsource3 $window [lindex $args 0] \
[lindex $args 1] [lindex $args 2]]}
}
}
clearsource {
return [tkdnd::compat::clearsource $window]
}
drag {
return [tkdnd::_init_drag $window "press" 0 0]
}
}
error "invalid number of arguments!"
};# ::dnd
# ----------------------------------------------------------------------------
# Command compat::bindtarget
# ----------------------------------------------------------------------------
proc compat::bindtarget0 {window} {
return [bind $window <<DropTargetTypes>>]
};# compat::bindtarget0
proc compat::bindtarget1 {window type} {
return [bindtarget2 $window $type <Drop>]
};# compat::bindtarget1
proc compat::bindtarget2 {window type event} {
switch $event {
<DragEnter> {return [bind $window <<DropEnter>>]}
<Drag> {return [bind $window <<DropPosition>>]}
<DragLeave> {return [bind $window <<DropLeave>>]}
<Drop> {return [bind $window <<Drop>>]}
}
};# compat::bindtarget2
proc compat::bindtarget3 {window type event script} {
set type [normalise_type $type]
::tkdnd::drop_target register $window [list $type]
switch $event {
<DragEnter> {return [bind $window <<DropEnter>> $script]}
<Drag> {return [bind $window <<DropPosition>> $script]}
<DragLeave> {return [bind $window <<DropLeave>> $script]}
<Drop> {return [bind $window <<Drop>> $script]}
}
};# compat::bindtarget3
proc compat::bindtarget4 {window type event script priority} {
return [bindtarget3 $window $type $event $script]
};# compat::bindtarget4
proc compat::normalise_type { type } {
switch $type {
text/plain -
{text/plain;charset=UTF-8} -
Text {return DND_Text}
text/uri-list -
Files {return DND_Files}
default {return $type}
}
};# compat::normalise_type
# ----------------------------------------------------------------------------
# Command compat::bindsource
# ----------------------------------------------------------------------------
proc compat::bindsource0 {window} {
return [bind $window <<DropTargetTypes>>]
};# compat::bindsource0
proc compat::bindsource1 {window type} {
return [bindsource2 $window $type <Drop>]
};# compat::bindsource1
proc compat::bindsource2 {window type script} {
::tkdnd::drag_source register $window $type 2
bind $window <<DragInitCmd>> "list {copy} %t \[$script\]"
};# compat::bindsource2
proc compat::bindsource3 {window type script priority} {
return [bindsource2 $window $type $script]
};# compat::bindsource3
# ----------------------------------------------------------------------------
# Command compat::cleartarget
# ----------------------------------------------------------------------------
proc compat::cleartarget {window} {
};# compat::cleartarget
# ----------------------------------------------------------------------------
# Command compat::clearsource
# ----------------------------------------------------------------------------
proc compat::clearsource {window} {
};# compat::clearsource
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