/*-----------------------------------------------------------------------------
 * ListTree	A list widget that displays a file manager style tree
 *
 * Copyright (c) 1996 Robert W. McMullen
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * Author: Rob McMullen <rwmcm@mail.ae.utexas.edu>
 *         http://www.ae.utexas.edu/~rwmcm
 */

#ifndef _ListTreeP_H
#define _ListTreeP_H

#include <Xm/Xm.h>
#include <Xm/XmP.h>
#include <Xm/PrimitiveP.h>
#include <Xm/ScrollBar.h>
#include <Xm/ScrolledW.h>

#include "ListTree.h"

/* LessTif definitions that are convenient for Motif */
#ifndef Prim_HighlightThickness
#define Prim_HighlightThickness(w) \
    (((XmPrimitiveWidget)(w))->primitive.highlight_thickness)
#endif

#ifndef Prim_ShadowThickness
#define Prim_ShadowThickness(w) \
    (((XmPrimitiveWidget)(w))->primitive.shadow_thickness)
#endif

#ifndef Prim_TopShadowGC
#define Prim_TopShadowGC(w) \
    (((XmPrimitiveWidget)(w))->primitive.top_shadow_GC)
#endif

#ifndef Prim_BottomShadowGC
#define Prim_BottomShadowGC(w) \
    (((XmPrimitiveWidget)(w))->primitive.bottom_shadow_GC)
#endif


#define ListTreeRET_ALLOC 10

#define TIMER_CLEAR 0
#define TIMER_SINGLE 1
#define TIMER_DOUBLE 2
#define TIMER_WAITING 3

typedef struct {
  int dummy;			/* keep compiler happy with dummy field */
} ListTreeClassPart;

typedef struct _ListTreeClassRec {
  CoreClassPart core_class;
  XmPrimitiveClassPart primitive_class;
  ListTreeClassPart ListTree_class;
} ListTreeClassRec;

extern ListTreeClassRec listtreeClassRec;

typedef struct {
  Pixmap bitmap;
  Pixmap pix;
  int width, height;
  int xoff;
} Pixinfo;

typedef struct {
  /* Public stuff ... */
  long foreground_pixel;
  XFontStruct *font;
  int NumItems;
  Dimension HSpacing;
  Dimension VSpacing;
/*      Dimension       LabelSpacing; */
  Dimension Margin;
  Dimension Indent;
  Pixinfo Open;
  Pixinfo Closed;
  Pixinfo Leaf;
  Pixinfo LeafOpen;
  Dimension LineWidth;
  Boolean HighlightPath;
  Boolean ClickPixmapToOpen;
  Boolean DoIncrementalHighlightCallback;
  
  XtCallbackList HighlightCallback;
  XtCallbackList ActivateCallback;
  XtCallbackList MenuCallback;
  XtCallbackList DestroyItemCallback;

  /* Private stuff ... */
  GC drawGC;
  GC eraseGC;
  GC eorGC;
  GC highlightGC;
  Pixinfo ItemPix;              /* temporary storage for GetItemPix */
  int exposeTop, exposeBot;
  int pixWidth;
  int preferredWidth, preferredHeight;
  ListTreeItem *first,		/* always points to a top level entry */
   *highlighted, *drop_highlighted;

  XtIntervalId timer_id;	/* timer for double click test */
  ListTreeItem *timer_item;	/* item to make sure both clicks */
  /* occurred on the same item */
  int timer_type;		/* flag for type of click that just happened */
  int timer_y;
  int timer_x;
  int multi_click_time;

  ListTreeItem **ret_item_list;
  int ret_item_alloc;

  Boolean Refresh;
  Boolean HasFocus;

    /* New stuff for maintaining its own scrolling state */
  Widget mom;			/* scrolled window */
  Widget hsb;			/* horizontal scrollbar */
  Widget vsb;			/* vertical scrollbar */
  Dimension viewX;
  Dimension viewY;
  Dimension viewWidth;
  Dimension viewHeight;
  int XOffset;
  int hsbPos;
  int hsbMax;
  
  int lastXOffset;
  int topItemPos;               /* position of topItem in itemCount */
  int bottomItemPos;            /* last position drawn in window */
  int lastItemPos;              /* last value of topItempos */
  ListTreeItem *topItem;        /* first visible item on screen */
  int itemCount;                /* total number of open ListTreeItems */
  Dimension itemHeight;
  Dimension maxPixHeight;
  int visibleCount;             /* number currently visible on screen */
  Boolean recount;
  
} ListTreePart;

typedef struct _ListTreeRec {
  CorePart core;
  XmPrimitivePart primitive;
  ListTreePart list;
} ListTreeRec;


#endif /* _ListTreeP_H */
