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authorjenglish <jenglish@flightlab.com>2009-12-25 19:11:56 (GMT)
committerjenglish <jenglish@flightlab.com>2009-12-25 19:11:56 (GMT)
commitae3c94f919c49e57d8be6cea52c0eeb4a72ab398 (patch)
treef74a6a7ef63bf2e929513856d58607ee545751e3 /library
parent34f5764e6203564bf56b0f31fea103d7c31898a2 (diff)
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Reworked ActivateTab focus selection logic
([Bug 2917688], also fixes [Bug 2546779]).
Diffstat (limited to 'library')
-rw-r--r--library/ttk/notebook.tcl33
-rw-r--r--library/ttk/utils.tcl70
2 files changed, 65 insertions, 38 deletions
diff --git a/library/ttk/notebook.tcl b/library/ttk/notebook.tcl
index 325d75d..04abdbe 100644
--- a/library/ttk/notebook.tcl
+++ b/library/ttk/notebook.tcl
@@ -1,5 +1,5 @@
#
-# $Id: notebook.tcl,v 1.5 2009/11/12 18:17:14 jenglish Exp $
+# $Id: notebook.tcl,v 1.6 2009/12/25 19:11:56 jenglish Exp $
#
# Bindings for TNotebook widget
#
@@ -21,21 +21,26 @@ bind TNotebook <Destroy> { ttk::notebook::Cleanup %W }
# ActivateTab $nb $tab --
# Select the specified tab and set focus.
#
-# If $tab was already the current tab, set the focus to the
-# notebook widget. Otherwise, set the focus to the first
-# traversable widget in the pane. The behavior is that the
-# notebook takes focus when the user selects the same tab
-# a second time. This mirrors Windows tab behavior.
+# Desired behavior:
+# + take focus when reselecting the currently-selected tab;
+# + keep focus if the notebook already has it;
+# + otherwise set focus to the first traversable widget
+# in the newly-selected tab;
+# + do not leave the focus in a deselected tab.
#
proc ttk::notebook::ActivateTab {w tab} {
- if {[$w index $tab] eq [$w index current]} {
- focus $w
+ set oldtab [$w select]
+ $w select $tab
+ set newtab [$w select] ;# NOTE: might not be $tab, if $tab is disabled
+
+ if {[focus] eq $w} { return }
+ if {$newtab eq $oldtab} { focus $w ; return }
+
+ update idletasks ;# needed so focus logic sees correct mapped states
+ if {[set f [ttk::focusFirst $newtab]] ne ""} {
+ ttk::traverseTo $f
} else {
- $w select $tab
- update idletasks ;# needed so focus logic sees correct mapped states
- if {[set f [ttk::focusFirst [$w select]]] ne ""} {
- tk::TabToWindow $f
- }
+ focus $w
}
}
@@ -102,6 +107,8 @@ proc ttk::notebook::enableTraversal {nb} {
if {![info exists TLNotebooks($top)]} {
# Augment $top bindings:
#
+ bind $top <Control-Key-Next> {+ttk::notebook::TLCycleTab %W 1}
+ bind $top <Control-Key-Prior> {+ttk::notebook::TLCycleTab %W -1}
bind $top <Control-Key-Tab> {+ttk::notebook::TLCycleTab %W 1}
bind $top <Shift-Control-Key-Tab> {+ttk::notebook::TLCycleTab %W -1}
catch {
diff --git a/library/ttk/utils.tcl b/library/ttk/utils.tcl
index 9f3d12d..a67b868 100644
--- a/library/ttk/utils.tcl
+++ b/library/ttk/utils.tcl
@@ -1,22 +1,52 @@
#
-# $Id: utils.tcl,v 1.7 2008/12/07 21:24:12 jenglish Exp $
+# $Id: utils.tcl,v 1.8 2009/12/25 19:11:56 jenglish Exp $
#
# Utilities for widget implementations.
#
### Focus management.
#
+# See also: #1516479
+#
## ttk::takefocus --
# This is the default value of the "-takefocus" option
-# for widgets that participate in keyboard navigation.
+# for ttk::* widgets that participate in keyboard navigation.
+#
+# NOTES:
+# tk::FocusOK (called by tk_focusNext) tests [winfo viewable]
+# if -takefocus is 1, empty, or missing; but not if it's a
+# script prefix, so we have to check that here as well.
#
-# See also: tk::FocusOK
#
proc ttk::takefocus {w} {
expr {[$w instate !disabled] && [winfo viewable $w]}
}
+## ttk::GuessTakeFocus --
+# This routine is called as a fallback for widgets
+# with a missing or empty -takefocus option.
+#
+# It implements the same heuristics as tk::FocusOK.
+#
+proc ttk::GuessTakeFocus {w} {
+ # Don't traverse to widgets with '-state disabled':
+ #
+ if {![catch {$w cget -state} state] && $state eq "disabled"} {
+ return 0
+ }
+
+ # Allow traversal to widgets with explicit key or focus bindings:
+ #
+ if {[regexp {Key|Focus} [concat [bind $w] [bind [winfo class $w]]]]} {
+ return 1;
+ }
+
+ # Default is nontraversable:
+ #
+ return 0;
+}
+
## ttk::traverseTo $w --
# Set the keyboard focus to the specified window.
#
@@ -38,36 +68,26 @@ proc ttk::clickToFocus {w} {
}
## ttk::takesFocus w --
-# Test if the widget can take keyboard focus:
-#
-# + widget is viewable, AND:
-# - if -takefocus is missing or empty, return 0, OR
-# - if -takefocus is 0 or 1, return that value, OR
-# - append the widget name to -takefocus and evaluate it
-# as a script.
+# Test if the widget can take keyboard focus.
#
-# See also: tk::FocusOK
-#
-# Note: This routine doesn't implement the same fallback heuristics
-# as tk::FocusOK.
+# See the description of the -takefocus option in options(n)
+# for details.
#
proc ttk::takesFocus {w} {
-
- if {![winfo viewable $w]} { return 0 }
-
- if {![catch {$w cget -takefocus} takefocus]} {
+ if {![winfo viewable $w]} {
+ return 0
+ } elseif {[catch {$w cget -takefocus} takefocus]} {
+ return [GuessTakeFocus $w]
+ } else {
switch -- $takefocus {
- 0 -
- 1 { return $takefocus }
- "" { return 0 }
+ "" { return [GuessTakeFocus $w] }
+ 0 { return 0 }
+ 1 { return 1 }
default {
- set value [uplevel #0 $takefocus [list $w]]
- return [expr {$value eq 1}]
+ return [expr {[uplevel #0 $takefocus [list $w]] == 1}]
}
}
}
-
- return 0
}
## ttk::focusFirst $w --