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# HtmlViewer class definition
# Copyright 1998, 1999 Cygnus Solutions
#
# 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:
#       class HtmlViewer
#
# DESC:
#       This class implements a simple HTML browser.  It has both pulldown
#       menus and buttons for navigating.  It uses the scrolledhtml iwidget
#       to do its rendering.
#
# NOTES:
#       Currently used as a help window.
#
# -----------------------------------------------------------------------------
class HtmlViewer {
  inherit EmbeddedWin
  
  public {
    variable topics { 
      {index index.html}
      {"Attach Dialog" attach.html}
      {"Breakpoint Window" breakpoint.html}
      {"Console Window" console.html }
      {"Function Browser" browser.html }
      {"Locals Window" locals.html }
      {"Memory Window" memory.html}
      {"Register Window" register.html}
      {"Source Window" source.html}
      {"Stack Window" stack.html}
      {"Target Window" target.html }
      {"Thread Window" thread.html }
      {"Watch Window" watch.html}
    }
    variable file "index.html"
    method back {}
    method forward {}
    method link {link}
    method load {link}
    method close {}
    method constructor {args}
    proc open_help {file}
  }
  
  private {
    variable _html
    variable _links
    variable _m
    variable _f
    
    method _enable {on args}
    method _buildwin {}
  }
  
}

# -----------------------------------------------------------------------------
# NAME:
#       class PageStack
#
# DESC:
#       Implements a stack-like class for saving and recalling items
#       like pages in a help browser. It differs from a traditional
#       stack only by the 'back' and 'next' methods which move up and
#       down the stack without disturbing it, unlike 'push' and 'pop'.
#
# NOTES:
#       Currently used by the HtmlViewer class.
#
# -----------------------------------------------------------------------------
class PageStack {
  private {
    variable _ptr -1
    variable _max -1
    variable _stack
  }
  public {
    method push {val}
    method back {}
    method next {}
    method more {}
    method less {}
    method current {}
  }
}