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authordkf <donal.k.fellows@manchester.ac.uk>2010-08-12 07:59:14 (GMT)
committerdkf <donal.k.fellows@manchester.ac.uk>2010-08-12 07:59:14 (GMT)
commit0068c1b934fc15e422075268a35e85477ff813b0 (patch)
treef480e4992e54b29513d64cf2d7670459561d632b /library
parent068f042f5e3805593b4d2fe44e9887a70bcefb06 (diff)
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* library/text.tcl (TextCursorInSelection): [Patch 2585265]: Backport
of factoring-out of decision logic for whether to delete the selected text.
Diffstat (limited to 'library')
-rw-r--r--library/text.tcl55
1 files changed, 31 insertions, 24 deletions
diff --git a/library/text.tcl b/library/text.tcl
index fc98743..acdaa8e 100644
--- a/library/text.tcl
+++ b/library/text.tcl
@@ -3,7 +3,7 @@
# This file defines the default bindings for Tk text widgets and provides
# procedures that help in implementing the bindings.
#
-# RCS: @(#) $Id: text.tcl,v 1.41.4.2 2009/10/25 13:50:48 dkf Exp $
+# RCS: @(#) $Id: text.tcl,v 1.41.4.3 2010/08/12 07:59:15 dkf Exp $
#
# Copyright (c) 1992-1994 The Regents of the University of California.
# Copyright (c) 1994-1997 Sun Microsystems, Inc.
@@ -208,24 +208,20 @@ bind Text <Return> {
}
}
bind Text <Delete> {
- if {[%W tag nextrange sel 1.0 end] ne ""} {
+ if {[tk::TextCursorInSelection %W]} {
%W delete sel.first sel.last
- } else {
- if {[%W compare end != insert+1c]} {
- %W delete insert
- }
- %W see insert
+ } elseif {[%W compare end != insert+1c]} {
+ %W delete insert
}
+ %W see insert
}
bind Text <BackSpace> {
- if {[%W tag nextrange sel 1.0 end] ne ""} {
+ if {[tk::TextCursorInSelection %W]} {
%W delete sel.first sel.last
- } else {
- if {[%W compare insert != 1.0]} {
- %W delete insert-1c
- }
- %W see insert
+ } elseif {[%W compare insert != 1.0]} {
+ %W delete insert-1c
}
+ %W see insert
}
bind Text <Control-space> {
@@ -849,6 +845,21 @@ proc ::tk::TextResetAnchor {w index} {
}
}
+# ::tk::TextCursorInSelection --
+# Check whether the selection exists and contains the insertion cursor. Note
+# that it assumes that the selection is contiguous.
+#
+# Arguments:
+# w - The text widget whose selection is to be checked
+
+proc ::tk::TextCursorInSelection {w} {
+ expr {
+ [llength [$w tag ranges sel]]
+ && [$w compare sel.first <= insert]
+ && [$w compare sel.last >= insert]
+ }
+}
+
# ::tk::TextInsert --
# Insert a string into a text at the point of the insertion cursor.
# If there is a selection in the text, and it covers the point of the
@@ -863,21 +874,17 @@ proc ::tk::TextInsert {w s} {
return
}
set compound 0
- if {[llength [set range [$w tag ranges sel]]]} {
- if {[$w compare [lindex $range 0] <= insert] \
- && [$w compare [lindex $range end] >= insert]} {
- set oldSeparator [$w cget -autoseparators]
- if {$oldSeparator} {
- $w configure -autoseparators 0
- $w edit separator
- set compound 1
- }
- $w delete [lindex $range 0] [lindex $range end]
+ if {[TextCursorInSelection $w]} {
+ set compound [$w cget -autoseparators]
+ if {$compound} {
+ $w configure -autoseparators 0
+ $w edit separator
}
+ $w delete sel.first sel.last
}
$w insert insert $s
$w see insert
- if {$compound && $oldSeparator} {
+ if {$compound} {
$w edit separator
$w configure -autoseparators 1
}