list_box.cpp

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#ifndef LIST_BOX_IMPLEMENTATION_FILE
#define LIST_BOX_IMPLEMENTATION_FILE

/*****************************************************************************\
*                                                                             *
*  Name   : list_box                                                          *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 1991-$now By Author.  This program is free software; you can  *
* redistribute it and/or modify it under the terms of the GNU General Public  *
* License as published by the Free Software Foundation; either version 2 of   *
* the License or (at your option) any later version.  This is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include "list_box.h"

#include <basis/function.h>
#include <wp_passive/system_string.h>
#include <wp_passive/wp_implementation.h>

#ifdef __XWINDOWS__
  #include <Xm/List.h>
#endif

list_box::list_box(manager &parent, const c_point &origin, int entries,
    list_box_kinds type, const color &foreground, const color &background)
: worker(parent, c_rectangle(origin, origin), NIL, foreground, background),
  array<istring>(entries), _kind(type)
{}

list_box::~list_box() {}

void list_box::selection_event(int index)
{
  FUNCDEF("selection_event");
  LOG(isprintf("blank list_box selection on index %d.", index));
}

const array<istring> &list_box::items() const { return *this; }

window_handle list_box::create_handle()
{
  FUNCDEF("create_handle");
LOG("create handle in");
  array<system_string *> hold_strings(length());
  window_string *to_pass_to_X = new window_string[length()];
    // deleted at end of function.
  for (int i = 0; i < length(); i++) {
    hold_strings.put(i, new system_string(get(i)));
      // create a string. which is deleted at the end of this function.
    to_pass_to_X[i] = window_string(*hold_strings.get(i));
      // keep track of the string's address to pass to x.
  }
LOG("handle did array");

  argument_list wargs;
  wargs.add(XmNitems, XtArgVal(to_pass_to_X));
  wargs.add(XmNitemCount, length());
LOG("about to create widg");
  window_handle to_return = XtCreateManagedWidget
    ("list_box", xmListWidgetClass, root().self(),
     wargs.generate(), wargs.number());
LOG("after created");
  char *callback_kind = NIL;
  bool do_callback = true;
  switch (_kind) {
  case SINGLE_SELECTION: callback_kind = XmNsingleSelectionCallback; break;
  case MULTIPLE_SELECTION: callback_kind = XmNmultipleSelectionCallback; break;
  case DISPLAY_ONLY:  // intentional fall-through to default.
  default: do_callback = false;
  }
LOG("about to add callback");
  if (do_callback)
    XtAddCallback(to_return, callback_kind, XtCallbackProc(list_box_callback),
        XtPointer(this));
LOG("create handle out");
  delete to_pass_to_X;
  for (int j = 0; j < hold_strings.length(); j++) delete hold_strings.get(j);
  return to_return;
}

void list_box::contents(int index, const istring &to_print)
{ put(index, to_print); }

istring list_box::contents(int index) const { return get(index); }

void list_box::draw() { if (!self()) self(create_handle()); worker::draw(); }

void list_box::list_box_callback(window_handle, list_box *me, XmListCallbackStruct *calldata)
{
  FUNCDEF("callback");
  LOG(isprintf("blank list_box_callback: item chosen=%s",
      me->items().get(calldata->item_position).s()));
}


#endif //LIST_BOX_IMPLEMENTATION_FILE

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