526 lines
14 KiB
Tcl
526 lines
14 KiB
Tcl
|
# listbox.tcl --
|
||
|
|
#
|
||
|
|
# This file defines the default bindings for Tk listbox widgets
|
||
|
|
# and provides procedures that help in implementing those bindings.
|
||
|
|
#
|
||
|
|
# Copyright (c) 1994 The Regents of the University of California.
|
||
|
|
# Copyright (c) 1994-1995 Sun Microsystems, Inc.
|
||
|
|
# Copyright (c) 1998 by Scriptics Corporation.
|
||
|
|
#
|
||
|
|
# See the file "license.terms" for information on usage and redistribution
|
||
|
|
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
||
|
|
|
||
|
|
#--------------------------------------------------------------------------
|
||
|
|
# tk::Priv elements used in this file:
|
||
|
|
#
|
||
|
|
# afterId - Token returned by "after" for autoscanning.
|
||
|
|
# listboxPrev - The last element to be selected or deselected
|
||
|
|
# during a selection operation.
|
||
|
|
# listboxSelection - All of the items that were selected before the
|
||
|
|
# current selection operation (such as a mouse
|
||
|
|
# drag) started; used to cancel an operation.
|
||
|
|
#--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
#-------------------------------------------------------------------------
|
||
|
|
# The code below creates the default class bindings for listboxes.
|
||
|
|
#-------------------------------------------------------------------------
|
||
|
|
|
||
|
|
# Note: the check for existence of %W below is because this binding
|
||
|
|
# is sometimes invoked after a window has been deleted (e.g. because
|
||
|
|
# there is a double-click binding on the widget that deletes it). Users
|
||
|
|
# can put "break"s in their bindings to avoid the error, but this check
|
||
|
|
# makes that unnecessary.
|
||
|
|
|
||
|
|
bind Listbox <1> {
|
||
|
|
if {[winfo exists %W]} {
|
||
|
|
tk::ListboxBeginSelect %W [%W index @%x,%y] 1
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# Ignore double clicks so that users can define their own behaviors.
|
||
|
|
# Among other things, this prevents errors if the user deletes the
|
||
|
|
# listbox on a double click.
|
||
|
|
|
||
|
|
bind Listbox <Double-1> {
|
||
|
|
# Empty script
|
||
|
|
}
|
||
|
|
|
||
|
|
bind Listbox <B1-Motion> {
|
||
|
|
set tk::Priv(x) %x
|
||
|
|
set tk::Priv(y) %y
|
||
|
|
tk::ListboxMotion %W [%W index @%x,%y]
|
||
|
|
}
|
||
|
|
bind Listbox <ButtonRelease-1> {
|
||
|
|
tk::CancelRepeat
|
||
|
|
%W activate @%x,%y
|
||
|
|
}
|
||
|
|
bind Listbox <Shift-1> {
|
||
|
|
tk::ListboxBeginExtend %W [%W index @%x,%y]
|
||
|
|
}
|
||
|
|
bind Listbox <Control-1> {
|
||
|
|
tk::ListboxBeginToggle %W [%W index @%x,%y]
|
||
|
|
}
|
||
|
|
bind Listbox <B1-Leave> {
|
||
|
|
set tk::Priv(x) %x
|
||
|
|
set tk::Priv(y) %y
|
||
|
|
tk::ListboxAutoScan %W
|
||
|
|
}
|
||
|
|
bind Listbox <B1-Enter> {
|
||
|
|
tk::CancelRepeat
|
||
|
|
}
|
||
|
|
|
||
|
|
bind Listbox <Up> {
|
||
|
|
tk::ListboxUpDown %W -1
|
||
|
|
}
|
||
|
|
bind Listbox <Shift-Up> {
|
||
|
|
tk::ListboxExtendUpDown %W -1
|
||
|
|
}
|
||
|
|
bind Listbox <Down> {
|
||
|
|
tk::ListboxUpDown %W 1
|
||
|
|
}
|
||
|
|
bind Listbox <Shift-Down> {
|
||
|
|
tk::ListboxExtendUpDown %W 1
|
||
|
|
}
|
||
|
|
bind Listbox <Left> {
|
||
|
|
%W xview scroll -1 units
|
||
|
|
}
|
||
|
|
bind Listbox <Control-Left> {
|
||
|
|
%W xview scroll -1 pages
|
||
|
|
}
|
||
|
|
bind Listbox <Right> {
|
||
|
|
%W xview scroll 1 units
|
||
|
|
}
|
||
|
|
bind Listbox <Control-Right> {
|
||
|
|
%W xview scroll 1 pages
|
||
|
|
}
|
||
|
|
bind Listbox <Prior> {
|
||
|
|
%W yview scroll -1 pages
|
||
|
|
%W activate @0,0
|
||
|
|
}
|
||
|
|
bind Listbox <Next> {
|
||
|
|
%W yview scroll 1 pages
|
||
|
|
%W activate @0,0
|
||
|
|
}
|
||
|
|
bind Listbox <Control-Prior> {
|
||
|
|
%W xview scroll -1 pages
|
||
|
|
}
|
||
|
|
bind Listbox <Control-Next> {
|
||
|
|
%W xview scroll 1 pages
|
||
|
|
}
|
||
|
|
bind Listbox <Home> {
|
||
|
|
%W xview moveto 0
|
||
|
|
}
|
||
|
|
bind Listbox <End> {
|
||
|
|
%W xview moveto 1
|
||
|
|
}
|
||
|
|
bind Listbox <Control-Home> {
|
||
|
|
%W activate 0
|
||
|
|
%W see 0
|
||
|
|
%W selection clear 0 end
|
||
|
|
%W selection set 0
|
||
|
|
event generate %W <<ListboxSelect>>
|
||
|
|
}
|
||
|
|
bind Listbox <Shift-Control-Home> {
|
||
|
|
tk::ListboxDataExtend %W 0
|
||
|
|
}
|
||
|
|
bind Listbox <Control-End> {
|
||
|
|
%W activate end
|
||
|
|
%W see end
|
||
|
|
%W selection clear 0 end
|
||
|
|
%W selection set end
|
||
|
|
event generate %W <<ListboxSelect>>
|
||
|
|
}
|
||
|
|
bind Listbox <Shift-Control-End> {
|
||
|
|
tk::ListboxDataExtend %W [%W index end]
|
||
|
|
}
|
||
|
|
bind Listbox <<Copy>> {
|
||
|
|
if {[selection own -displayof %W] eq "%W"} {
|
||
|
|
clipboard clear -displayof %W
|
||
|
|
clipboard append -displayof %W [selection get -displayof %W]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
bind Listbox <space> {
|
||
|
|
tk::ListboxBeginSelect %W [%W index active]
|
||
|
|
}
|
||
|
|
bind Listbox <<Invoke>> {
|
||
|
|
tk::ListboxBeginSelect %W [%W index active]
|
||
|
|
}
|
||
|
|
bind Listbox <Select> {
|
||
|
|
tk::ListboxBeginSelect %W [%W index active]
|
||
|
|
}
|
||
|
|
bind Listbox <Control-Shift-space> {
|
||
|
|
tk::ListboxBeginExtend %W [%W index active]
|
||
|
|
}
|
||
|
|
bind Listbox <Shift-Select> {
|
||
|
|
tk::ListboxBeginExtend %W [%W index active]
|
||
|
|
}
|
||
|
|
bind Listbox <Escape> {
|
||
|
|
tk::ListboxCancel %W
|
||
|
|
}
|
||
|
|
bind Listbox <Control-slash> {
|
||
|
|
tk::ListboxSelectAll %W
|
||
|
|
}
|
||
|
|
bind Listbox <Control-backslash> {
|
||
|
|
if {[%W cget -selectmode] ne "browse"} {
|
||
|
|
%W selection clear 0 end
|
||
|
|
event generate %W <<ListboxSelect>>
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# Additional Tk bindings that aren't part of the Motif look and feel:
|
||
|
|
|
||
|
|
bind Listbox <2> {
|
||
|
|
%W scan mark %x %y
|
||
|
|
}
|
||
|
|
bind Listbox <B2-Motion> {
|
||
|
|
%W scan dragto %x %y
|
||
|
|
}
|
||
|
|
|
||
|
|
# The MouseWheel will typically only fire on Windows and Mac OS X.
|
||
|
|
# However, someone could use the "event generate" command to produce
|
||
|
|
# one on other platforms.
|
||
|
|
|
||
|
|
if {[tk windowingsystem] eq "aqua"} {
|
||
|
|
bind Listbox <MouseWheel> {
|
||
|
|
%W yview scroll [expr {- (%D)}] units
|
||
|
|
}
|
||
|
|
bind Listbox <Option-MouseWheel> {
|
||
|
|
%W yview scroll [expr {-10 * (%D)}] units
|
||
|
|
}
|
||
|
|
bind Listbox <Shift-MouseWheel> {
|
||
|
|
%W xview scroll [expr {- (%D)}] units
|
||
|
|
}
|
||
|
|
bind Listbox <Shift-Option-MouseWheel> {
|
||
|
|
%W xview scroll [expr {-10 * (%D)}] units
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
bind Listbox <MouseWheel> {
|
||
|
|
%W yview scroll [expr {- (%D / 120) * 4}] units
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if {"x11" eq [tk windowingsystem]} {
|
||
|
|
# Support for mousewheels on Linux/Unix commonly comes through mapping
|
||
|
|
# the wheel to the extended buttons. If you have a mousewheel, find
|
||
|
|
# Linux configuration info at:
|
||
|
|
# http://www.inria.fr/koala/colas/mouse-wheel-scroll/
|
||
|
|
bind Listbox <4> {
|
||
|
|
if {!$tk_strictMotif} {
|
||
|
|
%W yview scroll -5 units
|
||
|
|
}
|
||
|
|
}
|
||
|
|
bind Listbox <5> {
|
||
|
|
if {!$tk_strictMotif} {
|
||
|
|
%W yview scroll 5 units
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxBeginSelect --
|
||
|
|
#
|
||
|
|
# This procedure is typically invoked on button-1 presses. It begins
|
||
|
|
# the process of making a selection in the listbox. Its exact behavior
|
||
|
|
# depends on the selection mode currently in effect for the listbox;
|
||
|
|
# see the Motif documentation for details.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The listbox widget.
|
||
|
|
# el - The element for the selection operation (typically the
|
||
|
|
# one under the pointer). Must be in numerical form.
|
||
|
|
|
||
|
|
proc ::tk::ListboxBeginSelect {w el {focus 1}} {
|
||
|
|
variable ::tk::Priv
|
||
|
|
if {[$w cget -selectmode] eq "multiple"} {
|
||
|
|
if {[$w selection includes $el]} {
|
||
|
|
$w selection clear $el
|
||
|
|
} else {
|
||
|
|
$w selection set $el
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$w selection clear 0 end
|
||
|
|
$w selection set $el
|
||
|
|
$w selection anchor $el
|
||
|
|
set Priv(listboxSelection) {}
|
||
|
|
set Priv(listboxPrev) $el
|
||
|
|
}
|
||
|
|
event generate $w <<ListboxSelect>>
|
||
|
|
# check existence as ListboxSelect may destroy us
|
||
|
|
if {$focus && [winfo exists $w] && [$w cget -state] eq "normal"} {
|
||
|
|
focus $w
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxMotion --
|
||
|
|
#
|
||
|
|
# This procedure is called to process mouse motion events while
|
||
|
|
# button 1 is down. It may move or extend the selection, depending
|
||
|
|
# on the listbox's selection mode.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The listbox widget.
|
||
|
|
# el - The element under the pointer (must be a number).
|
||
|
|
|
||
|
|
proc ::tk::ListboxMotion {w el} {
|
||
|
|
variable ::tk::Priv
|
||
|
|
if {$el == $Priv(listboxPrev)} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
set anchor [$w index anchor]
|
||
|
|
switch [$w cget -selectmode] {
|
||
|
|
browse {
|
||
|
|
$w selection clear 0 end
|
||
|
|
$w selection set $el
|
||
|
|
set Priv(listboxPrev) $el
|
||
|
|
event generate $w <<ListboxSelect>>
|
||
|
|
}
|
||
|
|
extended {
|
||
|
|
set i $Priv(listboxPrev)
|
||
|
|
if {$i eq ""} {
|
||
|
|
set i $el
|
||
|
|
$w selection set $el
|
||
|
|
}
|
||
|
|
if {[$w selection includes anchor]} {
|
||
|
|
$w selection clear $i $el
|
||
|
|
$w selection set anchor $el
|
||
|
|
} else {
|
||
|
|
$w selection clear $i $el
|
||
|
|
$w selection clear anchor $el
|
||
|
|
}
|
||
|
|
if {![info exists Priv(listboxSelection)]} {
|
||
|
|
set Priv(listboxSelection) [$w curselection]
|
||
|
|
}
|
||
|
|
while {($i < $el) && ($i < $anchor)} {
|
||
|
|
if {[lsearch $Priv(listboxSelection) $i] >= 0} {
|
||
|
|
$w selection set $i
|
||
|
|
}
|
||
|
|
incr i
|
||
|
|
}
|
||
|
|
while {($i > $el) && ($i > $anchor)} {
|
||
|
|
if {[lsearch $Priv(listboxSelection) $i] >= 0} {
|
||
|
|
$w selection set $i
|
||
|
|
}
|
||
|
|
incr i -1
|
||
|
|
}
|
||
|
|
set Priv(listboxPrev) $el
|
||
|
|
event generate $w <<ListboxSelect>>
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxBeginExtend --
|
||
|
|
#
|
||
|
|
# This procedure is typically invoked on shift-button-1 presses. It
|
||
|
|
# begins the process of extending a selection in the listbox. Its
|
||
|
|
# exact behavior depends on the selection mode currently in effect
|
||
|
|
# for the listbox; see the Motif documentation for details.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The listbox widget.
|
||
|
|
# el - The element for the selection operation (typically the
|
||
|
|
# one under the pointer). Must be in numerical form.
|
||
|
|
|
||
|
|
proc ::tk::ListboxBeginExtend {w el} {
|
||
|
|
if {[$w cget -selectmode] eq "extended"} {
|
||
|
|
if {[$w selection includes anchor]} {
|
||
|
|
ListboxMotion $w $el
|
||
|
|
} else {
|
||
|
|
# No selection yet; simulate the begin-select operation.
|
||
|
|
ListboxBeginSelect $w $el
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxBeginToggle --
|
||
|
|
#
|
||
|
|
# This procedure is typically invoked on control-button-1 presses. It
|
||
|
|
# begins the process of toggling a selection in the listbox. Its
|
||
|
|
# exact behavior depends on the selection mode currently in effect
|
||
|
|
# for the listbox; see the Motif documentation for details.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The listbox widget.
|
||
|
|
# el - The element for the selection operation (typically the
|
||
|
|
# one under the pointer). Must be in numerical form.
|
||
|
|
|
||
|
|
proc ::tk::ListboxBeginToggle {w el} {
|
||
|
|
variable ::tk::Priv
|
||
|
|
if {[$w cget -selectmode] eq "extended"} {
|
||
|
|
set Priv(listboxSelection) [$w curselection]
|
||
|
|
set Priv(listboxPrev) $el
|
||
|
|
$w selection anchor $el
|
||
|
|
if {[$w selection includes $el]} {
|
||
|
|
$w selection clear $el
|
||
|
|
} else {
|
||
|
|
$w selection set $el
|
||
|
|
}
|
||
|
|
event generate $w <<ListboxSelect>>
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxAutoScan --
|
||
|
|
# This procedure is invoked when the mouse leaves an entry window
|
||
|
|
# with button 1 down. It scrolls the window up, down, left, or
|
||
|
|
# right, depending on where the mouse left the window, and reschedules
|
||
|
|
# itself as an "after" command so that the window continues to scroll until
|
||
|
|
# the mouse moves back into the window or the mouse button is released.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The entry window.
|
||
|
|
|
||
|
|
proc ::tk::ListboxAutoScan {w} {
|
||
|
|
variable ::tk::Priv
|
||
|
|
if {![winfo exists $w]} return
|
||
|
|
set x $Priv(x)
|
||
|
|
set y $Priv(y)
|
||
|
|
if {$y >= [winfo height $w]} {
|
||
|
|
$w yview scroll 1 units
|
||
|
|
} elseif {$y < 0} {
|
||
|
|
$w yview scroll -1 units
|
||
|
|
} elseif {$x >= [winfo width $w]} {
|
||
|
|
$w xview scroll 2 units
|
||
|
|
} elseif {$x < 0} {
|
||
|
|
$w xview scroll -2 units
|
||
|
|
} else {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
ListboxMotion $w [$w index @$x,$y]
|
||
|
|
set Priv(afterId) [after 50 [list tk::ListboxAutoScan $w]]
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxUpDown --
|
||
|
|
#
|
||
|
|
# Moves the location cursor (active element) up or down by one element,
|
||
|
|
# and changes the selection if we're in browse or extended selection
|
||
|
|
# mode.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The listbox widget.
|
||
|
|
# amount - +1 to move down one item, -1 to move back one item.
|
||
|
|
|
||
|
|
proc ::tk::ListboxUpDown {w amount} {
|
||
|
|
variable ::tk::Priv
|
||
|
|
$w activate [expr {[$w index active] + $amount}]
|
||
|
|
$w see active
|
||
|
|
switch [$w cget -selectmode] {
|
||
|
|
browse {
|
||
|
|
$w selection clear 0 end
|
||
|
|
$w selection set active
|
||
|
|
event generate $w <<ListboxSelect>>
|
||
|
|
}
|
||
|
|
extended {
|
||
|
|
$w selection clear 0 end
|
||
|
|
$w selection set active
|
||
|
|
$w selection anchor active
|
||
|
|
set Priv(listboxPrev) [$w index active]
|
||
|
|
set Priv(listboxSelection) {}
|
||
|
|
event generate $w <<ListboxSelect>>
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxExtendUpDown --
|
||
|
|
#
|
||
|
|
# Does nothing unless we're in extended selection mode; in this
|
||
|
|
# case it moves the location cursor (active element) up or down by
|
||
|
|
# one element, and extends the selection to that point.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The listbox widget.
|
||
|
|
# amount - +1 to move down one item, -1 to move back one item.
|
||
|
|
|
||
|
|
proc ::tk::ListboxExtendUpDown {w amount} {
|
||
|
|
variable ::tk::Priv
|
||
|
|
if {[$w cget -selectmode] ne "extended"} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
set active [$w index active]
|
||
|
|
if {![info exists Priv(listboxSelection)]} {
|
||
|
|
$w selection set $active
|
||
|
|
set Priv(listboxSelection) [$w curselection]
|
||
|
|
}
|
||
|
|
$w activate [expr {$active + $amount}]
|
||
|
|
$w see active
|
||
|
|
ListboxMotion $w [$w index active]
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxDataExtend
|
||
|
|
#
|
||
|
|
# This procedure is called for key-presses such as Shift-KEndData.
|
||
|
|
# If the selection mode isn't multiple or extend then it does nothing.
|
||
|
|
# Otherwise it moves the active element to el and, if we're in
|
||
|
|
# extended mode, extends the selection to that point.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The listbox widget.
|
||
|
|
# el - An integer element number.
|
||
|
|
|
||
|
|
proc ::tk::ListboxDataExtend {w el} {
|
||
|
|
set mode [$w cget -selectmode]
|
||
|
|
if {$mode eq "extended"} {
|
||
|
|
$w activate $el
|
||
|
|
$w see $el
|
||
|
|
if {[$w selection includes anchor]} {
|
||
|
|
ListboxMotion $w $el
|
||
|
|
}
|
||
|
|
} elseif {$mode eq "multiple"} {
|
||
|
|
$w activate $el
|
||
|
|
$w see $el
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxCancel
|
||
|
|
#
|
||
|
|
# This procedure is invoked to cancel an extended selection in
|
||
|
|
# progress. If there is an extended selection in progress, it
|
||
|
|
# restores all of the items between the active one and the anchor
|
||
|
|
# to their previous selection state.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The listbox widget.
|
||
|
|
|
||
|
|
proc ::tk::ListboxCancel w {
|
||
|
|
variable ::tk::Priv
|
||
|
|
if {[$w cget -selectmode] ne "extended"} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
set first [$w index anchor]
|
||
|
|
set last $Priv(listboxPrev)
|
||
|
|
if {$last eq ""} {
|
||
|
|
# Not actually doing any selection right now
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if {$first > $last} {
|
||
|
|
set tmp $first
|
||
|
|
set first $last
|
||
|
|
set last $tmp
|
||
|
|
}
|
||
|
|
$w selection clear $first $last
|
||
|
|
while {$first <= $last} {
|
||
|
|
if {[lsearch $Priv(listboxSelection) $first] >= 0} {
|
||
|
|
$w selection set $first
|
||
|
|
}
|
||
|
|
incr first
|
||
|
|
}
|
||
|
|
event generate $w <<ListboxSelect>>
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tk::ListboxSelectAll
|
||
|
|
#
|
||
|
|
# This procedure is invoked to handle the "select all" operation.
|
||
|
|
# For single and browse mode, it just selects the active element.
|
||
|
|
# Otherwise it selects everything in the widget.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# w - The listbox widget.
|
||
|
|
|
||
|
|
proc ::tk::ListboxSelectAll w {
|
||
|
|
set mode [$w cget -selectmode]
|
||
|
|
if {$mode eq "single" || $mode eq "browse"} {
|
||
|
|
$w selection clear 0 end
|
||
|
|
$w selection set active
|
||
|
|
} else {
|
||
|
|
$w selection set 0 end
|
||
|
|
}
|
||
|
|
event generate $w <<ListboxSelect>>
|
||
|
|
}
|