comdlg.tcl
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上传日期:2015-12-11
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文件大小:7k
- # comdlg.tcl --
- #
- # Some functions needed for the common dialog boxes. Probably need to go
- # in a different file.
- #
- # RCS: @(#) $Id: comdlg.tcl,v 1.9.2.1 2006/01/25 18:21:41 dgp Exp $
- #
- # Copyright (c) 1996 Sun Microsystems, Inc.
- #
- # See the file "license.terms" for information on usage and redistribution
- # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- #
- # tclParseConfigSpec --
- #
- # Parses a list of "-option value" pairs. If all options and
- # values are legal, the values are stored in
- # $data($option). Otherwise an error message is returned. When
- # an error happens, the data() array may have been partially
- # modified, but all the modified members of the data(0 array are
- # guaranteed to have valid values. This is different than
- # Tk_ConfigureWidget() which does not modify the value of a
- # widget record if any error occurs.
- #
- # Arguments:
- #
- # w = widget record to modify. Must be the pathname of a widget.
- #
- # specs = {
- # {-commandlineswitch resourceName ResourceClass defaultValue verifier}
- # {....}
- # }
- #
- # flags = currently unused.
- #
- # argList = The list of "-option value" pairs.
- #
- proc tclParseConfigSpec {w specs flags argList} {
- upvar #0 $w data
- # 1: Put the specs in associative arrays for faster access
- #
- foreach spec $specs {
- if {[llength $spec] < 4} {
- error ""spec" should contain 5 or 4 elements"
- }
- set cmdsw [lindex $spec 0]
- set cmd($cmdsw) ""
- set rname($cmdsw) [lindex $spec 1]
- set rclass($cmdsw) [lindex $spec 2]
- set def($cmdsw) [lindex $spec 3]
- set verproc($cmdsw) [lindex $spec 4]
- }
- if {[llength $argList] & 1} {
- set cmdsw [lindex $argList end]
- if {![info exists cmd($cmdsw)]} {
- error "bad option "$cmdsw": must be [tclListValidFlags cmd]"
- }
- error "value for "$cmdsw" missing"
- }
- # 2: set the default values
- #
- foreach cmdsw [array names cmd] {
- set data($cmdsw) $def($cmdsw)
- }
- # 3: parse the argument list
- #
- foreach {cmdsw value} $argList {
- if {![info exists cmd($cmdsw)]} {
- error "bad option "$cmdsw": must be [tclListValidFlags cmd]"
- }
- set data($cmdsw) $value
- }
- # Done!
- }
- proc tclListValidFlags {v} {
- upvar $v cmd
- set len [llength [array names cmd]]
- set i 1
- set separator ""
- set errormsg ""
- foreach cmdsw [lsort [array names cmd]] {
- append errormsg "$separator$cmdsw"
- incr i
- if {$i == $len} {
- set separator ", or "
- } else {
- set separator ", "
- }
- }
- return $errormsg
- }
- #----------------------------------------------------------------------
- #
- # Focus Group
- #
- # Focus groups are used to handle the user's focusing actions inside a
- # toplevel.
- #
- # One example of using focus groups is: when the user focuses on an
- # entry, the text in the entry is highlighted and the cursor is put to
- # the end of the text. When the user changes focus to another widget,
- # the text in the previously focused entry is validated.
- #
- #----------------------------------------------------------------------
- # ::tk::FocusGroup_Create --
- #
- # Create a focus group. All the widgets in a focus group must be
- # within the same focus toplevel. Each toplevel can have only
- # one focus group, which is identified by the name of the
- # toplevel widget.
- #
- proc ::tk::FocusGroup_Create {t} {
- variable ::tk::Priv
- if {[winfo toplevel $t] ne $t} {
- error "$t is not a toplevel window"
- }
- if {![info exists Priv(fg,$t)]} {
- set Priv(fg,$t) 1
- set Priv(focus,$t) ""
- bind $t <FocusIn> [list tk::FocusGroup_In $t %W %d]
- bind $t <FocusOut> [list tk::FocusGroup_Out $t %W %d]
- bind $t <Destroy> [list tk::FocusGroup_Destroy $t %W]
- }
- }
- # ::tk::FocusGroup_BindIn --
- #
- # Add a widget into the "FocusIn" list of the focus group. The $cmd will be
- # called when the widget is focused on by the user.
- #
- proc ::tk::FocusGroup_BindIn {t w cmd} {
- variable FocusIn
- variable ::tk::Priv
- if {![info exists Priv(fg,$t)]} {
- error "focus group "$t" doesn't exist"
- }
- set FocusIn($t,$w) $cmd
- }
- # ::tk::FocusGroup_BindOut --
- #
- # Add a widget into the "FocusOut" list of the focus group. The
- # $cmd will be called when the widget loses the focus (User
- # types Tab or click on another widget).
- #
- proc ::tk::FocusGroup_BindOut {t w cmd} {
- variable FocusOut
- variable ::tk::Priv
- if {![info exists Priv(fg,$t)]} {
- error "focus group "$t" doesn't exist"
- }
- set FocusOut($t,$w) $cmd
- }
- # ::tk::FocusGroup_Destroy --
- #
- # Cleans up when members of the focus group is deleted, or when the
- # toplevel itself gets deleted.
- #
- proc ::tk::FocusGroup_Destroy {t w} {
- variable FocusIn
- variable FocusOut
- variable ::tk::Priv
- if {$t eq $w} {
- unset Priv(fg,$t)
- unset Priv(focus,$t)
- foreach name [array names FocusIn $t,*] {
- unset FocusIn($name)
- }
- foreach name [array names FocusOut $t,*] {
- unset FocusOut($name)
- }
- } else {
- if {[info exists Priv(focus,$t)] && $Priv(focus,$t) eq $w} {
- set Priv(focus,$t) ""
- }
- unset -nocomplain FocusIn($t,$w) FocusOut($t,$w)
- }
- }
- # ::tk::FocusGroup_In --
- #
- # Handles the <FocusIn> event. Calls the FocusIn command for the newly
- # focused widget in the focus group.
- #
- proc ::tk::FocusGroup_In {t w detail} {
- variable FocusIn
- variable ::tk::Priv
- if {$detail ne "NotifyNonlinear" && $detail ne "NotifyNonlinearVirtual"} {
- # This is caused by mouse moving out&in of the window *or*
- # ordinary keypresses some window managers (ie: CDE [Bug: 2960]).
- return
- }
- if {![info exists FocusIn($t,$w)]} {
- set FocusIn($t,$w) ""
- return
- }
- if {![info exists Priv(focus,$t)]} {
- return
- }
- if {$Priv(focus,$t) eq $w} {
- # This is already in focus
- #
- return
- } else {
- set Priv(focus,$t) $w
- eval $FocusIn($t,$w)
- }
- }
- # ::tk::FocusGroup_Out --
- #
- # Handles the <FocusOut> event. Checks if this is really a lose
- # focus event, not one generated by the mouse moving out of the
- # toplevel window. Calls the FocusOut command for the widget
- # who loses its focus.
- #
- proc ::tk::FocusGroup_Out {t w detail} {
- variable FocusOut
- variable ::tk::Priv
- if {$detail ne "NotifyNonlinear" && $detail ne "NotifyNonlinearVirtual"} {
- # This is caused by mouse moving out of the window
- return
- }
- if {![info exists Priv(focus,$t)]} {
- return
- }
- if {![info exists FocusOut($t,$w)]} {
- return
- } else {
- eval $FocusOut($t,$w)
- set Priv(focus,$t) ""
- }
- }
- # ::tk::FDGetFileTypes --
- #
- # Process the string given by the -filetypes option of the file
- # dialogs. Similar to the C function TkGetFileFilters() on the Mac
- # and Windows platform.
- #
- proc ::tk::FDGetFileTypes {string} {
- foreach t $string {
- if {[llength $t] < 2 || [llength $t] > 3} {
- error "bad file type "$t", should be "typeName {extension ?extensions ...?} ?{macType ?macTypes ...?}?""
- }
- eval lappend [list fileTypes([lindex $t 0])] [lindex $t 1]
- }
- set types {}
- foreach t $string {
- set label [lindex $t 0]
- set exts {}
- if {[info exists hasDoneType($label)]} {
- continue
- }
- set name "$label ("
- set sep ""
- set doAppend 1
- foreach ext $fileTypes($label) {
- if {$ext eq ""} {
- continue
- }
- regsub {^[.]} $ext "*." ext
- if {![info exists hasGotExt($label,$ext)]} {
- if {$doAppend} {
- if {[string length $sep] && [string length $name]>40} {
- set doAppend 0
- append name $sep...
- } else {
- append name $sep$ext
- }
- }
- lappend exts $ext
- set hasGotExt($label,$ext) 1
- }
- set sep ","
- }
- append name ")"
- lappend types [list $name $exts]
- set hasDoneType($label) 1
- }
- return $types
- }