#==============================================================================
# Main Tablelist and Tablelist_tile package module.
#
# Copyright (c) 2000-2022  Csaba Nemethi (E-mail: csaba.nemethi@t-online.de)
#==============================================================================

namespace eval ::tablelist {
    #
    # Public variables:
    #
    variable version	6.20
    variable library
    if {$::tcl_version >= 8.4} {
	set library	[file dirname [file normalize [info script]]]
    } else {
	set library	[file dirname [info script]] ;# no "file normalize" yet
    }

    #
    # Creates a new tablelist widget:
    #
    namespace export	tablelist

    #
    # Sort the items of a tablelist widget by one or more of its columns:
    #
    namespace export	sortByColumn addToSortColumns

    #
    # Helper procedures used in binding scripts:
    #
    namespace export	convEventFields getTablelistPath getTablelistColumn \
			delaySashPosUpdates

    #
    # Register various widgets for interactive cell editing:
    #
    namespace export	addBWidgetEntry addBWidgetSpinBox addBWidgetComboBox
    namespace export    addIncrEntryfield addIncrDateTimeWidget \
			addIncrSpinner addIncrSpinint addIncrCombobox
    namespace export	addCtext addOakleyCombobox
    namespace export	addDateMentry addTimeMentry addDateTimeMentry \
			addFixedPointMentry addIPAddrMentry addIPv6AddrMentry
}

package provide tablelist::common $::tablelist::version

#
# The following procedure, invoked in "tablelist.tcl" and "tablelist_tile.tcl",
# sets the variable ::tablelist::usingTile to the given value and sets a trace
# on this variable.
#
proc ::tablelist::useTile {bool} {
    variable usingTile $bool
    trace variable usingTile wu [list ::tablelist::restoreUsingTile $bool]
}

#
# The following trace procedure is executed whenever the variable
# ::tablelist::usingTile is written or unset.  It restores the variable to its
# original value, given by the first argument.
#
proc ::tablelist::restoreUsingTile {origVal varName index op} {
    variable usingTile $origVal
    switch $op {
	w {
	    return -code error "it is not supported to use both Tablelist and\
				Tablelist_tile in the same application"
	}
	u {
	    trace variable usingTile wu \
		  [list ::tablelist::restoreUsingTile $origVal]
	}
    }
}

proc ::tablelist::createTkAliases {} {
    foreach cmd {frame label} {
	if {[llength [info commands ::tk::$cmd]] == 0} {
	    interp alias {} ::tk::$cmd {} ::$cmd
	}
    }
}
::tablelist::createTkAliases

#
# Everything else needed is lazily loaded on demand, via the dispatcher
# set up in the subdirectory "scripts" (see the file "tclIndex").
#
lappend auto_path [file join $::tablelist::library scripts]

#
# Load the packages mwutil, scaleutil, and scaleutilmisc from the directory
# "scripts/utils".  Take into account that mwutil is also included in
# Mentry and Scrollutil, and scaleutil is also included in Scrollutil.
#
proc ::tablelist::loadUtils {} {
    if {[catch {package present mwutil} version] == 0 && $version < 2.19} {
	package forget mwutil
    }
    package require mwutil 2.19

    if {[catch {package present scaleutil} version] == 0 && $version < 1.9} {
	package forget scaleutil
    }
    package require scaleutil 1.9

    package require scaleutilmisc 1.3
}
::tablelist::loadUtils
