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################################################################################
# This file contains procedures related to entry widgets used in xpbs.
################################################################################
# buildFullEntrybox: builds one of the following entry boxes and display it on
# the 'frame_name' specified.
#            -----------   
# (1) label  |         | <|=|> 		       mode: right horizontal scrollbar
#            -----------			     no all button
#
#		   -----------
# (2) label  [all] |         | <|=|>           mode: right horizontal scrollbar
#                  -----------			     all button
#
#
#           -----------
# (3) label |         |				mode: bottom horiz. scrollbar
#           ----------- 			      no all button	
#           <|=======|>
#
#
#                 -----------
# (4) label [all] |         |			mode: bottom horiz. scrollbar   
#                 -----------			      all button	
#                 <|=======|> 
# OPTION:
#   The 'label_placement' allows for the label to be set "left", "right", 
#   "top", and "bottom".
# RETURNS: a list containing the frame holding the full entry box,
#          all_button (if any) label, entry, scrollbar widget names.
proc buildFullEntrybox {frame_name label_width label entry_width \
                        default_entryval scrollbar_placement all_button \
			{label_placement "left"}} {

  global TEXTFONT LABELFONT tk_version

  if {$all_button} {
     button $frame_name.all -font $LABELFONT -width 4 -text "all" -padx 1 \
	    -pady 1
  }

  label $frame_name.label   -font $LABELFONT -width $label_width \
	-text $label -padx 1 -pady 1
  entry $frame_name.entry   -font $TEXTFONT \
                            -relief sunken \
                            -borderwidth 2  \
                            -width $entry_width

  if { $tk_version < 4.0 } {
     $frame_name.entry configure -scrollcommand "$frame_name.hscroll set"
  } else {
     $frame_name.entry configure -xscrollcommand "$frame_name.hscroll set"
  }

  $frame_name.entry insert 0 $default_entryval

  bind_entry_overselect $frame_name.entry

  if { [string compare $scrollbar_placement ""] != 0 } {
     scrollbar $frame_name.hscroll -orient horizontal \
                                   -borderwidth 2 \
                                   -relief groove

     if { $tk_version < 4.0 } {
       $frame_name.hscroll configure -command "$frame_name.entry view"
     } else {
       $frame_name.hscroll configure -command "$frame_name.entry xview"
     }
  }

  if {$label_width > 0} {
    if {[string compare $scrollbar_placement "left"] != 0} {
      if {[string compare $label_placement "left"] == 0} {
          pack $frame_name.label -side left -anchor nw -ipadx 1m -fill x
      } elseif {[string compare $label_placement "right"] == 0} {
          pack $frame_name.label -side right -anchor nw -ipadx 1m -fill x
      } elseif {[string compare $label_placement "top"] == 0} {
          pack $frame_name.label -side top -anchor nw -ipadx 1m -fill x
      } elseif {[string compare $label_placement "bottom"] == 0} {
          pack $frame_name.label -side bottom -anchor nw -ipadx 1m -fill x
      }
    }
  }

  if {$all_button && [string compare $scrollbar_placement "right"] == 0} {
    pack $frame_name.all $frame_name.entry \
         $frame_name.hscroll -side left -anchor nw -ipadx 1m -fill x
  } elseif {!$all_button && \
            [string compare $scrollbar_placement "right"] == 0} {
    pack $frame_name.entry $frame_name.hscroll \
         -side left -anchor nw -ipadx 1m -fill x
  } elseif {$all_button && \
            [string compare $scrollbar_placement "bottom"] == 0} {
    pack $frame_name.all $frame_name.entry \
         -side left -anchor nw -fill x
    pack $frame_name.hscroll -side bottom -fill x -expand 1
  } elseif {!$all_button && \
            [string compare $scrollbar_placement "bottom"] == 0} {
    pack $frame_name.entry -side left -anchor nw -fill x
    pack $frame_name.hscroll -before $frame_name.entry -side bottom -fill x -expand 1 \
		-anchor nw
  } elseif {$all_button && [string compare $scrollbar_placement "left"] == 0} {
    pack $frame_name.hscroll $frame_name.label $frame_name.all \
	 $frame_name.entry -side left -anchor nw -ipadx 1m -fill x
  } elseif {!$all_button && \
            [string compare $scrollbar_placement "left"] == 0} {
    pack $frame_name.hscroll $frame_name.label $frame_name.entry \
         -side left -anchor nw -ipadx 1m -fill x
  } else {
    pack $frame_name.entry -side left -anchor nw -fill x
    if {$tk_version < 4.0} {
      $frame_name.entry configure -scrollcommand ""
    } else {
      $frame_name.entry configure -xscrollcommand ""
    }
  }
  if {$all_button} {
    return [list $frame_name $frame_name.label $frame_name.all \
                 $frame_name.entry $frame_name.hscroll]
  } else {
    return [list $frame_name $frame_name.label $frame_name.entry \
                 $frame_name.hscroll]
    
  }
}
# disable_fullentry: disables all components of an entry box.
proc disable_fullentry {entryLabel entry entryScroll {allButton ""}} {
  global disabledColor selColor

  if {[string compare $entryLabel ""] != 0} {
    disable_label $entryLabel $disabledColor
  }
  if {[string compare $entryScroll ""] != 0} {
    disable_scrollbar $entryScroll $disabledColor
  }
  if {[string compare $allButton ""] != 0} {
      disable_button $allButton
  }
  set state [lindex [$entry configure -state] 4]
  if {[string compare $state "disabled"] != 0} {
    set selColor($entry) [lindex [$entry configure -foreground] 4]
    $entry configure -state disabled -foreground $disabledColor
  }
}

# enable_fullentry: enables all components of an entry box.
proc enable_fullentry {entryLabel entry entryScroll {allButton ""}} {
  global selColor foregroundColor

  if {[string compare $entryLabel ""] != 0} {
    enable_label $entryLabel
  } 
  if {[string compare $entryScroll ""] != 0} {
    enable_scrollbar $entryScroll
  }
  if {[string compare $allButton ""] != 0} {
      enable_button $allButton
  }
  if [info exists selColor($entry)] {
    $entry configure -state normal -foreground $selColor($entry)
  } else {
    $entry configure -state normal
  }
  focus $entry
}

# compress_array: compresses a numerically-indexed array and returns its size.
proc compress_array array_name {
  upvar $array_name arr

  set i 0
  set next 0
  for {set i 0} {$i < [array size arr]} {incr i} {

    if { [string compare $arr($i) ""] != 0 } {
      set arr2($next) $arr($i)
      incr next
    }
  }
  catch {unset arr}

  if [info exists arr2] {
    for {set i 0} {$i < [array size arr2]} {incr i} {
      set arr($i) $arr2($i)
    }
  }

  return $next
}

proc menuEntry {frame_name {args}} {

  set menuName [string trim $frame_name "."]

  global $menuName canvas tk_version TEXTFONT LABELFONT disabledColor
  set configure 0

  set argc [llength $args]
  for {set i 0} {$i < $argc} {incr i} {
    switch -exact -- [lindex $args $i] {
      configure  {
                set configure 1
      }
      menubutton {
                if { ![info exists [set menuName](menubutton)]} {
                        return ""
                }
                return [set [set menuName](menubutton)]
      }
      labelWidgets {
                if { ![info exists [set menuName](labelWidgets)]} {
                        return ""
                }
                return [set [set menuName](labelWidgets)]
      }
      -menuvalues {
                set [set menuName](menuvalues) [join [lindex $args [incr i]]]
      }
      menuvalues {
                if { ![info exists [set menuName](menuvalues)]} {
                        return ""
                }
                return [set [set menuName](menuvalues)]
      }
      -title {
                set [set menuName](title) [lindex $args [incr i]]
      }
      title {
                if { ![info exists [set menuName](title)]} {
                        return ""
                }
                return [set [set menuName](title)]
      }
      -noDFLT {
                set [set menuName](noDFLT) [lindex $args [incr i]]
      }
      noDFLT {
                if { ![info exists [set menuName](noDFLT)]} {
                        return 0
                }
                return [set [set menuName](noDFLT)]
      }
      -prefix {
                set [set menuName](prefix) [lindex $args [incr i]]
      }
      prefix {
                if { ![info exists [set menuName](prefix)]} {
                        return ""
                }
                return [set [set menuName](prefix)]
      }
      -textvariable {
                set [set menuName](textvariable) [lindex $args [incr i]]
      }
      -command {
                set [set menuName](command) [lindex $args [incr i]]
      }
      command {
                if { ![info exists [set menuName](command)]} {
                        return ""
                }
                return [set [set menuName](command)]
      }
      disable {
                set labels [menuEntry $frame_name labelWidgets]
                foreach l $labels {
                        if {[string compare $l ""] == 0} {
                                break
                        }
                        disable_label $l $disabledColor
                }
		set mb [menuEntry $frame_name menubutton]
		$mb configure -state disabled
		return
      }
      enable {
                set labels [box $frame_name labelWidgets]
                foreach l $labels {
                        if {[string compare $l ""] == 0} {
                                break
                        }
                        enable_label $l
                }
		set mb [menuEntry $frame_name menubutton]
		$mb configure -state normal
		return
      }
      create     {
                catch {unset $menuName}
      }
      getMenuArray {
                return "[set menuName]"
      }
    }
  }

  global [set [set menuName](textvariable)]
  set [set [set menuName](textvariable)] " "
  set f $frame_name

  set label [menuEntry $f title]
  label $frame_name.l -width [string length $label] -text $label -padx 1 \
                -pady 1 -justify left -font $LABELFONT
  set [set menuName](labelWidgets) $frame_name.l

  menubutton $f.m -relief raised -bd 2 -anchor w -menu $f.m.menu \
        -textvariable [set [set menuName](textvariable)] -font $LABELFONT
  
  set [set menuName](menubutton) $f.m

  menu $f.m.menu -borderwidth 2 -relief raised
  if {$tk_version >= 4.0} {
        $f.m configure -indicatoron 1
        $f.m.menu configure -tearoff 0
  }
  bind_button1 $f.m.menu
  set k 0
  set maxwidth 0
  set prefix [menuEntry $f prefix]
  set values [menuEntry $f menuvalues]
  foreach v $values {
	set cascLabel [lindex $v 0]
	set entries  [lrange $v 1 end]

	set m2 $f.m.menu
	if {[string compare $cascLabel ""] != 0} {
		set m2 [menu $f.m.menu.$k]
  		if {$tk_version >= 4.0} {
        		$m2 configure -tearoff 0
  		}
		$f.m.menu add cascade -label $cascLabel -menu $m2 \
			-font $LABELFONT
	}
	if {$k == 0} {
		set firstentry $m2
	}
	foreach e $entries {
   		set width [string length $prefix$e]
    		if {$width > $maxwidth} {
        		set maxwidth $width
    		}

		set cmd [menuEntry $f command]
		if {[string compare $cmd ""] == 0} {
    			$m2 add command -label $prefix$e -font $LABELFONT \
        		  -command \
			      "set [set [set menuName](textvariable)] $prefix$e"
		} else {
    			$m2 add command -label $prefix$e -font $LABELFONT \
        		  -command \
			   "set [set [set menuName](textvariable)] $prefix$e; $cmd $e"
		}
	}
    	incr k
  }

  if {![menuEntry $f noDFLT]} {
  	$firstentry invoke 0
  }
  $f.m configure -width $maxwidth
  pack $f.l $f.m -side top -anchor nw
}