# Debug window for GDBtk.
# Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License (GPL) as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.


# -----------------------------------------------------------------------------
# NAME:		DebugWin::constructor
#	
# SYNOPSIS:	constructor::args
#
# DESC:		Creates the debug window  
#
# ARGS:		None are used yet.
# -----------------------------------------------------------------------------
itcl::body DebugWin::constructor {args} {
  debug $args
  window_name "Insight Debug" "Debug"

  build_win
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::destructor
#	
# SYNOPSIS:	Not called by hand
#
# DESC:		Destroys the debug window
#
# ARGS:		None
# -----------------------------------------------------------------------------
itcl::body DebugWin::destructor {} {
  # notify debug code that window is going away
  ::debug::debugwin ""
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::reconfig
#	
# SYNOPSIS:	Reconfigure callback
#
# DESC:		Fixes up window colors
#
# ARGS:		None
# -----------------------------------------------------------------------------
itcl::body DebugWin::reconfig {} {
  # This keeps the Debug window using its unique black background.
  # Otherwise, a reconfigure event will color it to match the other windows
  $itk_interior.s configure -textbackground black
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::build_win
#
# SYNOPSIS:	build_win
#	
# DESC:		Creates the Debug Window. Reads the contents of the debug log
#		file, if it exists. Notifies the debug functions in ::debug
#		to send output here.
# -----------------------------------------------------------------------------
itcl::body DebugWin::build_win {} {
  global gdb_ImageDir GDBTK_LIBRARY

  set top [winfo toplevel $itk_interior]
  
  # initialize the gdbtk_de array
  if {![info exists ::gdbtk_de]} {
    set ::gdbtk_de(ALL) 1
    set ::gdbtk_de(ERRORS_ONLY) 0
    set ::gdbtk_de(others) 0
    set ::gdbtk_de(filter_var) ALL
  }

  # create menubar
  set menu [menu $itk_interior.m  -tearoff 0]
  $menu add cascade -menu $menu.file -label "File" -underline 0
  set m [menu $menu.file] 
  $m add command -label "Clear" -underline 1 \
    -command [code $this _clear]
  $m add command -label "Mark Old" -underline 1 \
    -command [code $this _mark_old]
  $m add separator
  $m add command -label "Save" -underline 0 \
    -command [code $this _save_contents]
  $m add separator
  $m add command -label "Close" -underline 0 \
    -command "::debug::debugwin {};delete object $this"
  $menu add cascade -menu $menu.trace -label "Trace"
  set m [menu $menu.trace]
  $m add radiobutton -label Start -variable ::debug::tracing -value 1
  $m add radiobutton -label Stop -variable ::debug::tracing -value 0
  $menu add cascade -menu $menu.rs -label "ReSource"
  set m [menu $menu.rs]
  foreach f [lsort [glob [file join $GDBTK_LIBRARY *.itb]]] {
    $m add command -label "Source [file tail $f]"\
      -command [list source $f]
  }
  $m add separator
  $m add command -label "Source ALL" -command [code $this _source_all]

  $menu add cascade -menu $menu.opt -label "Options"
  set m [menu $menu.opt]
  $m add command -label "Display" -underline 0 \
    -command [list ManagedWin::open DebugWinDOpts -over $this]
  if {!$::debug::initialized} {
    $menu entryconfigure 1 -state disabled
    $menu add cascade -label "     Tracing Not Initialized" -foreground red \
      -activeforeground red
  }
  $menu add cascade -menu $menu.help -label "Help" -underline 0
  set m [menu $menu.help]
  $m add command -label "Debugging Functions" -underline 0 \
    -command {open_help debug.html}

  $top configure -menu $menu
  
  iwidgets::scrolledtext $itk_interior.s -hscrollmode static \
    -vscrollmode static -wrap none -textbackground black -foreground white
  set _t [$itk_interior.s component text]
  pack $itk_interior.s -expand 1 -fill both

  # define tags
  foreach color $_colors {
    $_t tag configure [lindex $color 0] -foreground [lindex $color 1]
  }
  $_t tag configure trace -foreground gray
  $_t tag configure args -foreground blue
  $_t tag configure marked -background grey20

  loadlog

  # now notify the debug functions to use this window
  ::debug::debugwin $this

  # override the window delete procedure so the messages are
  # turned off first.
  wm protocol $top WM_DELETE_WINDOW "::debug::debugwin {};destroy $top"
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::puts
#	
# SYNOPSIS:	puts {level cls func msg}
#
# DESC:		Writes debugging information into the DebugWin. A filter
#		will be applied to determine if the message should be
#		displayed or not.  
#
# ARGS:		level - priority level. See debug::dbug for details.
#		cls   - class name of caller, for example "SrcWin"
#		func  - function name of caller
#		msg   - message to display
# -----------------------------------------------------------------------------
itcl::body DebugWin::puts {level cls func msg} {
  # filter. check if we should display this message
  # for now we always let high-level messages through
  if {$level == "I"} {

    # errors and warnings only
    if {$::gdbtk_de(ERRORS_ONLY)} { return }

    # ALL classes except those set
    if {$::gdbtk_de(ALL)} {
      if {[info exists ::gdbtk_de($cls)]} {
	if {$::gdbtk_de($cls)} {
	  return
	}
      } elseif {$::gdbtk_de(others)} {
	return
      }
    }

    # ONLY the classes set
    if {!$::gdbtk_de(ALL)} {
      if {[info exists ::gdbtk_de($cls)]} {
	if {!$::gdbtk_de($cls)} {
	  return
	}
      } elseif {!$::gdbtk_de(others)} {
	return
      }
    }
  }

  if {$func != ""} {
    append cls ::$func
  }
  $_t insert end "($cls) " {} "$msg\n" $level
  $_t see insert
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::put_trace
#	
# SYNOPSIS:	put_trace {enter level func ar}
#	
# DESC:		Writes trace information into the DebugWin. A filter
#		will be applied to determine if the message should be
#		displayed or not.
#
# ARGS:		enter - 1 if this is a function entry, 0 otherwise.
#		level - stack level
#		func  - function name
#		ar    - function arguments
# -----------------------------------------------------------------------------
itcl::body DebugWin::put_trace {enter level func ar} {
  set x [expr {$level * 2 - 2}]
  if {$enter} {
    $_t insert end "[string range $_bigstr 0 $x]$func " trace "$ar\n" args
  } else {
    $_t insert end "[string range $_bigstr 0 $x]<- $func " trace "$ar\n" args
  }
  $_t see insert
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::loadlog
#
# SYNOPSIS:	loadlog
#	
# DESC:		Reads the contents of the debug log file, if it exists, into 
#		the DebugWin. 
# -----------------------------------------------------------------------------
itcl::body DebugWin::loadlog {} {
  $_t delete 0.0 end
  # Now load in log file, if possible.
  # this is rather rude, using the logfile variable in the debug namespace
  if {$::debug::logfile != "" && $::debug::logfile != "stdout"} {
    flush $::debug::logfile
    seek $::debug::logfile 0 start
    while {[gets $::debug::logfile line] >= 0} {
      while {[catch {set f [lindex $line 0]} f]} {
	# If the lindex failed its because the remainder of the
	# list is on the next line.  Get it.
	if {[gets $::debug::logfile line2] < 0} {
	  break
	}
	append line \n $line2
      }
      if {$f == "T"} {
	put_trace [lindex $line 1] [lindex $line 2] [lindex $line 3] \
	  [lindex $line 4]
      } else {
	puts $f [lindex $line 1] [lindex $line 2] [lindex $line 3]
      }
    }
  }
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::_source_all
#
# SYNOPSIS:	_source_all
#	
# DESC:		Re-sources all the .itb files.
# -----------------------------------------------------------------------------
itcl::body DebugWin::_source_all {} {
  foreach f [glob [file join $::GDBTK_LIBRARY *.itb]] {
    source $f
  }
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::_clear
#
# SYNOPSIS:	_clear
#	
# DESC:		Clears out the content of the debug window.
# -----------------------------------------------------------------------------
itcl::body DebugWin::_clear {} {
  $_t delete 1.0 end
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::_mark_old
#
# SYNOPSIS:	_mark_old
#	
# DESC:		Changes the background of the current contents of the window.
# -----------------------------------------------------------------------------
itcl::body DebugWin::_mark_old {} {
  $_t tag add marked 1.0 "end - 1c"
}

# -----------------------------------------------------------------------------
# NAME:		DebugWin::_save_contents
#
# SYNOPSIS:	_save_contents
#	
# DESC:		Changes the background of the current contents of the window.
# -----------------------------------------------------------------------------
itcl::body DebugWin::_save_contents {} {
  set file [tk_getSaveFile -title "Choose debug window dump file" \
	      -parent [winfo toplevel $itk_interior]]
  if {$file == ""} {
    return
  }

  if {[catch {::open $file w} fileH]} {
    tk_messageBox -type ok -icon error -message \
      "Can't open file: \"$file\". \n\nThe error was:\n\n\"$fileH\""
    return
  }
  ::puts $fileH [$_t get 1.0 end]

}

###############################################################################
# -----------------------------------------------------------------------------
# NAME:		DebugWinDOpts::constructor
#
# SYNOPSIS:	constructor
#	
# DESC:		Creates the Debug Window Options Dialog.
# -----------------------------------------------------------------------------
itcl::body DebugWinDOpts::constructor {args} {
    window_name "Debug Window Options"
    build_win
    eval itk_initialize $args 
}

###############################################################################
# -----------------------------------------------------------------------------
# NAME:		DebugWinDOpts::destructor
#
# SYNOPSIS:	Not called by hand
#	
# DESC:		Destroys the Debug Window Options Dialog.
# -----------------------------------------------------------------------------
itcl::body DebugWinDOpts::destructor {} {
}


# -----------------------------------------------------------------------------
# NAME:		DebugWinDOpts::build_win
#
# SYNOPSIS:	build_win
#	
# DESC:		Creates the Debug Window Options Dialog. This dialog allows the
#		user to select which information is displayed in the debug 
#		window and (eventually) how it looks.
# -----------------------------------------------------------------------------
itcl::body DebugWinDOpts::build_win {} {
  wm title [winfo toplevel $itk_interior] "Debug Display Options"
  # initialize here so we can resource this file and update the list
  set _classes {DebugWin RegWin SrcBar SrcWin ToolBar WatchWin EmbeddedWin \
		  ManagedWin GDBWin StackWin SrcTextWin global \
		  BpWin TargetSelection ModalDialog ProcessWin \
		  GDBEventHandler MemWin VarTree}
  set _classes [concat [lsort $_classes] others]

  set f [frame $itk_interior.f]
  set btns [frame $itk_interior.buttons]

  iwidgets::Labeledframe $f.display -labelpos nw -labeltext {Classes}
  set fr [$f.display childsite]
  radiobutton $fr.0 -text "Messages from ALL classes EXCEPT those selected below" \
    -variable ::gdbtk_de(filter_var) -value ALL -command [code $this _all]
  radiobutton $fr.1 -text "Messages from ONLY those classes selected below" \
    -variable ::gdbtk_de(filter_var) -value ONLY -command [code $this _all]
  radiobutton $fr.2 -text "Only WARNINGS and ERRORS" \
    -variable ::gdbtk_de(filter_var) -value ERRORS -command [code $this _all]

  grid $fr.0 -sticky w -padx 5 -pady 5
  grid $fr.1 -sticky w -padx 5 -pady 5
  grid $fr.2 -sticky w -padx 5 -pady 5

  iwidgets::Labeledframe $f.classes 
  set fr [$f.classes childsite]

  set i 0
  foreach cls $_classes {
    if {![info exists ::gdbtk_de($cls)]} {
      set ::gdbtk_de($cls) 0
    }
    checkbutton $fr.$i -text $cls -variable ::gdbtk_de($cls)
    incr i
  }

  set k [expr 3*(int($i/3))]
  set more [expr $i - $k]
  set j 0
  while {$j < $k} {
    grid $fr.$j $fr.[expr $j+1] $fr.[expr $j+2] -sticky w -padx 5 -pady 5
    incr j 3
  }
  switch $more {
    1 { grid $fr.$j x x -sticky w -padx 5 -pady 5}
    2 { grid $fr.$j $fr.[expr $j+1] x -sticky w -padx 5 -pady 5}
  }

  pack $f.display -side top -expand 1 -fill both
  pack $f.classes -side top -expand 1 -fill both

  button $btns.ok -text [gettext OK] -width 7 -command [code $this _apply 1] \
    -default active
  button $btns.apply -text "Apply to All"  -width 7 \
    -command [code $this _apply 0]
  if {$::debug::logfile == "" || $::debug::logfile == "stdout"} {
    $btns.apply configure -state disabled
  }
  button $btns.help -text [gettext Help] -width 10 -command [code $this help] \
    -state disabled
  standard_button_box $btns
  bind $btns.ok <Return> "$btns.ok flash; $btns.ok invoke"
  bind $btns.apply <Return> "$btns.apply flash; $btns.apply invoke"
  bind $btns.help <Return> "$btns.help flash; $btns.help invoke"
  
  pack $btns $f -side bottom -expand 1 -fill both -anchor e
  focus $btns.ok
}

# -----------------------------------------------------------------------------
# NAME:		DebugWinDOpts::_all
#
# SYNOPSIS:	_all
#	
# DESC:		Callback for selecting ALL classes. If the user selects ALL,
#		deselect all the individual class checkbuttons.
# -----------------------------------------------------------------------------
itcl::body DebugWinDOpts::_all {} {
  switch $::gdbtk_de(filter_var) {
    ALL {
      set ::gdbtk_de(ALL) 1
      set ::gdbtk_de(ERRORS_ONLY) 0
      #enable class buttons
      set num 0
      foreach class $_classes {
	[$itk_interior.f.classes childsite].$num configure -state normal
	incr num
      }
    }
    ONLY {
      set ::gdbtk_de(ALL) 0
      set ::gdbtk_de(ERRORS_ONLY) 0
      #enable class buttons
      set num 0
      foreach class $_classes {
	[$itk_interior.f.classes childsite].$num configure -state normal
	incr num
      }
    }
    ERRORS {
      set ::gdbtk_de(ALL) 0
      set ::gdbtk_de(ERRORS_ONLY) 1
      # disable class buttons
      set num 0
      foreach class $_classes {
	[$itk_interior.f.classes childsite].$num configure -state disabled
	incr num
      }
    }
  }
}


# -----------------------------------------------------------------------------
# NAME:		DebugWinDOpts::_apply
#
# SYNOPSIS:	_apply
#	
# DESC:		Callback for the "Apply" button. Loads the contents of the
#		log file through the new filter into the debug window. The
#		button is disabled if there is no log file.
# -----------------------------------------------------------------------------
itcl::body DebugWinDOpts::_apply { done } {
  set dw [ManagedWin::find DebugWin]
  debug $dw
  if {$dw != ""} {
    $dw loadlog
  }
  if {$done} {
    delete object $this
  }
}