finddialog.itk

windows下的GDB insight前端

#
# Finddialog
# ----------------------------------------------------------------------
# This class implements a dialog for searching text.  It prompts the
# user for a search string and the method of searching which includes
# case sensitive, regular expressions, backwards, and all.
#
# ----------------------------------------------------------------------
#  AUTHOR: Mark L. Ulferts              EMAIL: [e-mail]
#
#  @(#) RCS: $Id: finddialog.itk,v 1.3 2001/08/07 19:56:48 smithc Exp $
# ----------------------------------------------------------------------
#            Copyright (c) 1996 DSC Technologies Corporation
# ======================================================================
# Permission to use, copy, modify, distribute and license this software 
# and its documentation for any purpose, and without fee or written 
# agreement with DSC, is hereby granted, provided that the above copyright 
# notice appears in all copies and that both the copyright notice and 
# warranty disclaimer below appear in supporting documentation, and that 
# the names of DSC Technologies Corporation or DSC Communications 
# Corporation not be used in advertising or publicity pertaining to the 
# software without specific, written prior permission.
# 
# DSC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, 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. IN NO EVENT SHALL 
# DSC BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR 
# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION,
# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 
# SOFTWARE.
# ======================================================================

#
# Usual options.
#
itk::usual Finddialog {
    keep -background -cursor -foreground -selectcolor
}

# ------------------------------------------------------------------
#                          IPRFINDDIALOG
# ------------------------------------------------------------------
itcl::class ::iwidgets::Finddialog {
    inherit iwidgets::Dialogshell

    constructor {args} {}

    itk_option define -selectcolor selectColor Background {} 
    itk_option define -clearcommand clearCommand Command {}
    itk_option define -matchcommand matchCommand Command {}
    itk_option define -patternbackground patternBackground Background \#707070
    itk_option define -patternforeground patternForeground Foreground White
    itk_option define -searchbackground searchBackground Background \#c4c4c4
    itk_option define -searchforeground searchForeground Foreground Black
    itk_option define -textwidget textWidget TextWidget {}

    public {
	method clear {}
	method find {}
    }

    protected {
	method _get {setting}
	method _textExists {}

	common _optionValues       ;# Current settings of check buttons.
	common _searchPoint        ;# Starting location for searches
	common _matchLen           ;# Matching pattern string length
    }
}

#
# Provide a lowercased access method for the ::finddialog class.
# 
proc ::iwidgets::finddialog {pathName args} {
    uplevel ::iwidgets::Finddialog $pathName $args
}

#
# Use option database to override default resources of base classes.
#
option add *Finddialog.title "Find" widgetDefault

# ------------------------------------------------------------------
#                            CONSTRUCTOR
# ------------------------------------------------------------------
itcl::body ::iwidgets::Finddialog::constructor {args} {
    #
    # Add the find pattern entryfield.
    #
    itk_component add pattern {
	iwidgets::Entryfield $itk_interior.pattern -labeltext "Find:"
    } 
    bind [$itk_component(pattern) component entry] \
	    <Return> "[itcl::code $this invoke]; break"
    
    #
    # Add the find all checkbutton.
    #
    itk_component add all {
	checkbutton $itk_interior.all \
	    -variable [itcl::scope _optionValues($this-all)] \
	    -text "All"
    }

    #
    # Add the case consideration checkbutton.
    #
    itk_component add case {
	checkbutton $itk_interior.case \
	    -variable [itcl::scope _optionValues($this-case)] \
	    -text "Consider Case"
    }

    #
    # Add the regular expression checkbutton.
    #
    itk_component add regexp {
	checkbutton $itk_interior.regexp \
	    -variable [itcl::scope _optionValues($this-regexp)] \
	    -text "Use Regular Expression"
    }

    #
    # Add the find backwards checkbutton.
    #
    itk_component add backwards {
	checkbutton $itk_interior.backwards \
	    -variable [itcl::scope _optionValues($this-backwards)] \
	    -text "Find Backwards"
    }

    #
    # Add the find, clear, and close buttons, making find be the default.
    #
    add Find -text Find -command [itcl::code $this find]
    add Clear -text Clear -command [itcl::code $this clear]
    add Close -text Close -command [itcl::code $this deactivate 0]

    default Find

    #
    # Use the grid to layout the components.
    #
    grid $itk_component(pattern) -row 0 -column 0 \
	-padx 10 -pady 10 -columnspan 4 -sticky ew
    grid $itk_component(all) -row 1 -column 0
    grid $itk_component(case) -row 1 -column 1
    grid $itk_component(regexp) -row 1 -column 2
    grid $itk_component(backwards) -row 1 -column 3

    grid columnconfigure $itk_interior 0 -weight 1
    grid columnconfigure $itk_interior 1 -weight 1
    grid columnconfigure $itk_interior 2 -weight 1
    grid columnconfigure $itk_interior 3 -weight 1

    #
    # Initialize all the configuration options.
    #
    eval itk_initialize $args
}

# ------------------------------------------------------------------
#                             OPTIONS
# ------------------------------------------------------------------

# ------------------------------------------------------------------
# OPTION: -clearcommand
#
# Specifies a command to be invoked following a clear operation. 
# The command is meant to be a means of notification that the
# clear has taken place and allow other actions to take place such
# as disabling a find again menu.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Finddialog::clearcommand {}

# ------------------------------------------------------------------
# OPTION: -matchcommand
#
# Specifies a command to be invoked following a find operation. 
# The command is called with a match point as an argument.  Should
# a match not be found the match point is {}.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Finddialog::matchcommand {}

# ------------------------------------------------------------------
# OPTION: -patternbackground
#
# Specifies the background color of the text matching the search
# pattern.  It may have any of the forms accepted by Tk_GetColor.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Finddialog::patternbackground {}

# ------------------------------------------------------------------
# OPTION: -patternforeground
#
# Specifies the foreground color of the pattern matching a search
# operation.  It may have any of the forms accepted by Tk_GetColor.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Finddialog::patternforeground {}

# ------------------------------------------------------------------
# OPTION: -searchforeground
#
# Specifies the foreground color of the line containing the matching
# pattern from a search operation.  It may have any of the forms 
# accepted by Tk_GetColor.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Finddialog::searchforeground {}

# ------------------------------------------------------------------
# OPTION: -searchbackground
#
# Specifies the background color of the line containing the matching
# pattern from a search operation.  It may have any of the forms 
# accepted by Tk_GetColor.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Finddialog::searchbackground {}

# ------------------------------------------------------------------
# OPTION: -textwidget
#
# Specifies the scrolledtext or text widget to be searched.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Finddialog::textwidget {
    if {$itk_option(-textwidget) != {}} {
	set _searchPoint($itk_option(-textwidget)) 1.0
    }
}

# ------------------------------------------------------------------
#                            METHODS
# ------------------------------------------------------------------

# ------------------------------------------------------------------
# PUBLIC METHOD: clear 
#
# Clear the pattern entryfield and the indicators.  
# ------------------------------------------------------------------
itcl::body ::iwidgets::Finddialog::clear {} {
    $itk_component(pattern) clear