#include <cdk_int.h>

/*
 * $Author: Thorsten.Glaser $
 * $Date: 2005/04/24 20:27:19 $
 * $Revision: 1.151 $
 */

/*
 * Declare some local definitions.
 */
#define		DOWN		0
#define		UP		1

/*
 * Declare file local prototypes.
 */
static int createList(CDKVIEWER *swindow, int listSize);
static int searchForWord (CDKVIEWER *viewer, char *pattern, int direction);
static int jumpToLine (CDKVIEWER *viewer);
static void popUpLabel (CDKVIEWER *viewer, char **mesg);
static void getAndStorePattern (CDKSCREEN *screen);
static void drawCDKViewerButtons (CDKVIEWER *viewer);
static void drawCDKViewerInfo (CDKVIEWER *viewer);

/*
 * Declare file local variables.
 */
static char *	SearchPattern	= 0;
static int	SearchDirection = DOWN;

DeclareCDKObjects(VIEWER, Viewer, setCdk, Unknown);

/*
 * This function creates a new viewer object.
 */
CDKVIEWER *newCDKViewer (CDKSCREEN *cdkscreen, int xplace, int yplace, int height, int width, char **buttons, int buttonCount, chtype buttonHighlight, boolean Box, boolean shadow)
{
   CDKVIEWER *viewer	= 0;
   int parentWidth	= getmaxx(cdkscreen->window);
   int parentHeight	= getmaxy(cdkscreen->window);
   int boxWidth		= width;
   int boxHeight	= height;
   int xpos		= xplace;
   int ypos		= yplace;
   int buttonWidth	= 0;
   int buttonAdj	= 0;
   int buttonPos	= 1;
   int x		= 0;

   static const struct { int from; int to; } bindings[] = {
	    { CDK_BACKCHAR,	KEY_PPAGE },
	    { 'b',		KEY_PPAGE },
	    { 'B',		KEY_PPAGE },
	    { CDK_FORCHAR,	KEY_NPAGE },
	    { SPACE,		KEY_NPAGE },
	    { 'f',		KEY_NPAGE },
	    { 'F',		KEY_NPAGE },
	    { '|',		KEY_HOME },
	    { '$',		KEY_END },
   };

   if ((viewer = newCDKObject(CDKVIEWER, &my_funcs)) == 0)
      return (0);

   setCDKViewerBox (viewer, Box);

  /*
   * If the height is a negative value, the height will
   * be ROWS-height, otherwise, the height will be the
   * given height.
   */
   boxHeight = setWidgetDimension (parentHeight, height, 0);

  /*
   * If the width is a negative value, the width will
   * be COLS-width, otherwise, the width will be the
   * given width.
   */
   boxWidth = setWidgetDimension (parentWidth, width, 0);

   /* Rejustify the x and y positions if we need to. */
   alignxy (cdkscreen->window, &xpos, &ypos, boxWidth, boxHeight);

   /* Make the viewer window. */
   viewer->win = newwin (boxHeight, boxWidth, ypos, xpos);
   if (viewer->win == 0)
   {
      destroyCDKObject(viewer);
      return (0);
   }

   /* Turn the keypad on for the viewer. */
   keypad (viewer->win, TRUE);

   /* Create the buttons. */
   viewer->buttonCount = buttonCount;
   if (buttonCount > 0)
   {
      if ((viewer->button    = typeCallocN(chtype *, buttonCount + 1)) == 0
       || (viewer->buttonLen = typeCallocN(int,      buttonCount + 1)) == 0
       || (viewer->buttonPos = typeCallocN(int,      buttonCount + 1)) == 0)
      {
	 destroyCDKObject(viewer);
	 return (0);
      }
      for (x=0; x < buttonCount; x++)
      {
	 viewer->button[x]	= char2Chtype (buttons[x], &viewer->buttonLen[x], &buttonAdj);
	 buttonWidth		+= viewer->buttonLen[x] + 1;
      }
      buttonAdj = (int)((boxWidth-buttonWidth)/ (buttonCount +1));
      buttonPos = 1 + buttonAdj;
      for (x=0; x < buttonCount; x++)
      {
	 viewer->buttonPos[x]	= buttonPos;
	 buttonPos		+= buttonAdj + viewer->buttonLen[x];
      }
   }

   /* Set the rest of the variables */
   ScreenOf(viewer)		= cdkscreen;
   viewer->parent		= cdkscreen->window;
   viewer->shadowWin		= 0;
   viewer->buttonHighlight	= buttonHighlight;
   viewer->boxHeight		= boxHeight;
   viewer->boxWidth		= boxWidth - 2;
   viewer->viewSize		= height - 2;
   ObjOf(viewer)->inputWindow	= viewer->win;
   initExitType(viewer);
   viewer->shadow		= shadow;
   viewer->currentButton	= 0;
   viewer->currentTop		= 0;
   viewer->length		= 0;
   viewer->leftChar		= 0;
   viewer->maxLeftChar		= 0;
   viewer->maxTopLine		= 0;
   viewer->characters		= 0;
   viewer->listSize		= -1;
   viewer->showLineInfo		= 1;
   viewer->exitType		= vEARLY_EXIT;

   /* Do we need to create a shadow??? */
   if (shadow)
   {
      viewer->shadowWin = newwin (boxHeight, boxWidth + 1, ypos + 1, xpos + 1);
      if (viewer->shadowWin == 0)
      {
	 destroyCDKObject(viewer);
	 return (0);
      }
   }

   /* Setup the key bindings. */
   for (x = 0; x < (int) SIZEOF(bindings); ++x)
      bindCDKObject (vVIEWER, viewer, bindings[x].from, getcCDKBind, (void *)(long)bindings[x].to);

   /* Register this baby. */
   registerCDKObject (cdkscreen, vVIEWER, viewer);

   /* Return the viewer object. */
   return (viewer);
}

/*
 * This function sets various attributes of the widget.
 */
int setCDKViewer (CDKVIEWER *viewer, char *title, char **list, int listSize, chtype buttonHighlight, boolean attrInterp, boolean showLineInfo, boolean Box)
{
   setCDKViewerTitle (viewer, title);
   setCDKViewerHighlight (viewer, buttonHighlight);
   setCDKViewerInfoLine (viewer, showLineInfo);
   setCDKViewerBox (viewer, Box);
   return setCDKViewerInfo (viewer, list, listSize, attrInterp);
}

/*
 * This sets the title of the viewer. (A null title is allowed.
 * It just means that the viewer will not have a title when drawn.)
 */
void setCDKViewerTitle (CDKVIEWER *viewer, char *title)
{
   (void) setCdkTitle(ObjOf(viewer), title, - (viewer->boxWidth + 1));
   viewer->titleAdj = TitleLinesOf(viewer);

   /* Need to set viewer->viewSize. */
   viewer->viewSize = viewer->boxHeight - (TitleLinesOf(viewer) + 1) - 2;
}
chtype **getCDKViewerTitle (CDKVIEWER *viewer)
{
   return TitleOf(viewer);
}

static void setupLine (CDKVIEWER *viewer, boolean interpret, char *list, int x)
{
   /* Did they ask for attribute interpretation? */
   if (interpret)
   {
      viewer->list[x]    = char2Chtype (list, &viewer->listLen[x], &viewer->listPos[x]);
      viewer->listPos[x] = justifyString (viewer->boxWidth, viewer->listLen[x], viewer->listPos[x]);
   }
   else
   {
      int len = (int)strlen (list);
      int pass;
      int y;
      chtype *t = 0;

      /*
       * We must convert tabs and other nonprinting characters.  The curses
       * library normally does this, but we are bypassing it by writing
       * chtype's directly.
       */
      for (pass = 0; pass < 2; ++pass)
      {
	 len = 0;
	 for (y = 0; list[y] != '\0'; ++y)
	 {
	    if (list[y] == '\t')
	    {
	       do
	       {
		  if (pass)
		     t[len] = ' ';
		  ++len;
	       } while (len & 7);
	    }
	    else if (isprint(CharOf(list[y])))
	    {
	       if (pass)
		  t[len] = CharOf(list[y]);
	       ++len;
	    }
	    else
	    {
	       const char *s = unctrl(list[y]);
	       while (*s != 0)
	       {
		  if (pass)
		     t[len] = CharOf(*s);
		  ++len;
		  ++s;
	       }
	    }
	 }
	 if (!pass)
	 {
	    viewer->list[x] = t = typeCallocN(chtype, len + 3);
	    if (t == 0)
	    {
	       len = 0;
	       break;
	    }
	 }
      }
      viewer->listLen[x] = len;
      viewer->listPos[x] = 0;
   }
   viewer->widestLine = MAXIMUM (viewer->widestLine, viewer->listLen[x]);
}

static void freeLine (CDKVIEWER *viewer, int x)
{
   if (x < viewer->listSize)
   {
      freeChtype (viewer->list[x]);
      viewer->list[x] = 0;
   }
}

/*
 * This function sets the contents of the viewer.
 */
int setCDKViewerInfo (CDKVIEWER *viewer, char **list, int listSize, boolean interpret)
{
   char filename[CDK_PATHMAX + 2];
   int currentLine	= 0;
   int x		= 0;
   int viewerSize	= listSize;

   /*
    * If the list-size is negative, count the length of the null-terminated
    * list of strings.
    */
   if (listSize < 0)
   {
      /*
       * FIXME: this should be a function, like chlen()
       */
      listSize = 0;
      if (list != 0)
      {
	 for (x = 0; list[x] != 0; ++x)
	 {
	    ;
	 }
	 listSize = x;
      }
   }

   /* compute the size of the resulting display */
   viewerSize = listSize;
   if (list != 0 && interpret)
   {
      for (x = 0; x < listSize; ++x)
      {
	 if (checkForLink (list[x], filename) == 1)
	 {
	    char **fileContents = 0;
	    int fileLen = CDKreadFile (filename, &fileContents);

	    if (fileLen >= 0)
	       viewerSize += (fileLen - 1);
	    CDKfreeStrings (fileContents);
	 }
      }
   }

   /* Clean out the old viewer info. (if there is any) */
   viewer->inProgress = TRUE;
   cleanCDKViewer(viewer);
   createList(viewer, viewerSize);

   /* Keep some semi-permanent info. */
   viewer->interpret = interpret;

   /* Copy the information given. */
   for (x = currentLine = 0; x < listSize && currentLine < viewerSize; x++)
   {
      if (list[x] == 0)
      {
	 viewer->list[currentLine]	= 0;
	 viewer->listLen[currentLine]	= 0;
	 viewer->listPos[currentLine]	= 0;
	 currentLine++;
      }
      else
      {
	 /* Check if we have a file link in this line. */
	 if (checkForLink (list[x], filename) == 1)
	 {
	    /* We have a link, open the file. */
	    char **fileContents = 0;
	    int fileLen		= 0;
	    int fileLine	= 0;

	    /* Open the file and put it into the viewer. */
	    fileLen = CDKreadFile (filename, &fileContents);
	    if (fileLen == -1)
	    {
#ifdef HAVE_START_COLOR
#define FOPEN_FMT "<C></16>Link Failed: Could not open the file %s"
#else
#define FOPEN_FMT "<C></K>Link Failed: Could not open the file %s"
#endif
	       char *temp = (char *)malloc(80 + strlen(filename));
	       sprintf(temp, FOPEN_FMT, filename);
	       setupLine(viewer, TRUE, temp, currentLine++);
	       free (temp);
	    }
	    else
	    {
	       /* For each line read, copy it into the viewer. */
	       fileLen = MINIMUM(fileLen, (viewerSize - currentLine));
	       for (fileLine=0; fileLine < fileLen ; fileLine++)
	       {
		  if (currentLine >= viewerSize)
		     break;
		  setupLine(viewer, FALSE, fileContents[fileLine], currentLine);
		  viewer->characters += viewer->listLen[currentLine];
		  currentLine++;
	       }
	       CDKfreeStrings (fileContents);
	    }
	 }
	 else if (currentLine < viewerSize)
	 {
	    setupLine(viewer, viewer->interpret, list[x], currentLine);
	    viewer->characters += viewer->listLen[currentLine];
	    currentLine++;
	 }
      }
   }

  /*
   * Determine how many characters we can shift to the right
   * before all the items have been viewer off the screen.
   */
   if (viewer->widestLine > viewer->boxWidth)
   {
      viewer->maxLeftChar = (viewer->widestLine - viewer->boxWidth) + 1;
   }
   else
   {
      viewer->maxLeftChar = 0;
   }

   /* Set up the needed vars for the viewer list. */
   viewer->inProgress = FALSE;
   viewer->listSize = viewerSize;
   if (viewer->listSize <= viewer->viewSize)
   {
      viewer->maxTopLine = 0;
   }
   else
   {
      viewer->maxTopLine = viewer->listSize-1;
   }
   return viewer->listSize;
}
chtype **getCDKViewerInfo (CDKVIEWER *viewer, int *size)
{
   (*size) = viewer->listSize;
   return viewer->list;
}

/*
 * This function sets the highlight type of the buttons.
 */
void setCDKViewerHighlight (CDKVIEWER *viewer, chtype buttonHighlight)
{
   viewer->buttonHighlight = buttonHighlight;
}
chtype getCDKViewerHighlight (CDKVIEWER *viewer)
{
   return viewer->buttonHighlight;
}

/*
 * This sets whether or not you want to set the viewer info line.
 */
void setCDKViewerInfoLine (CDKVIEWER *viewer, boolean showLineInfo)
{
   viewer->showLineInfo = showLineInfo;
}
boolean getCDKViewerInfoLine (CDKVIEWER *viewer)
{
   return viewer->showLineInfo;
}

/*
 * This sets the widgets box attribute.
 */
void setCDKViewerBox (CDKVIEWER *viewer, boolean Box)
{
   ObjOf(viewer)->box = Box;
   ObjOf(viewer)->borderSize = Box ? 1 : 0;
}
boolean getCDKViewerBox (CDKVIEWER *viewer)
{
   return ObjOf(viewer)->box;
}

/*
 * This removes all the lines inside the scrolling window.
 */
void cleanCDKViewer (CDKVIEWER *viewer)
{
   int x;

   /* Clean up the memory used ... */
   for (x=0; x < viewer->listSize; x++)
   {
      freeLine (viewer, x);
   }

   /* Reset some variables. */
   viewer->listSize	= 0;
   viewer->maxLeftChar  = 0;
   viewer->widestLine	= 0;
   viewer->currentTop	= 0;
   viewer->maxTopLine	= 0;

   /* Redraw the window. */
   drawCDKViewer (viewer, ObjOf(viewer)->box);
}

static void PatternNotFound(CDKVIEWER *viewer, char *pattern)
{
   char *tempInfo[2];
   char *temp = (char *)malloc(80 + strlen(pattern));
   tempInfo[0] = temp;
   tempInfo[1] = 0;
   sprintf (temp, "</U/5>Pattern '%s' not found.<!U!5>", pattern);
   popUpLabel (viewer, tempInfo);
   free (temp);
}

/*
 * This function actually controls the viewer...
 */
int activateCDKViewer (CDKVIEWER *viewer, chtype *actions GCC_UNUSED)
{
   char *fileInfo[10];
   char *tempInfo[2], temp[500];
   chtype input;
   int x, REFRESH;

   /* Create the information about the file stats. */
   sprintf (temp, "</5>      </U>File Statistics<!U>     <!5>");
   fileInfo[0] = copyChar(temp);
   sprintf (temp, "</5>                          <!5>");
   fileInfo[1] = copyChar(temp);
   sprintf (temp, "</5/R>Character Count:<!R> %-4ld     <!5>", viewer->characters);
   fileInfo[2] = copyChar(temp);
   sprintf (temp, "</5/R>Line Count     :<!R> %-4d     <!5>", viewer->listSize);
   fileInfo[3] = copyChar(temp);
   sprintf (temp, "</5>                          <!5>");
   fileInfo[4] = copyChar(temp);
   sprintf (temp, "<C></5>Press Any Key To Continue.<!5>");
   fileInfo[5] = copyChar(temp);
   fileInfo[6] = 0;

   tempInfo[0] = temp;
   tempInfo[1] = 0;

   /* Set the current button. */
   viewer->currentButton = 0;

   /* Draw the viewer list. */
   drawCDKViewer (viewer, ObjOf(viewer)->box);

   /* Do this until KEY_ENTER is hit. */
   for (;;)
   {
      /* Reset the refresh flag. */
      REFRESH = FALSE;

      /* Get the user input. */
      input = getcCDKObject (ObjOf(viewer));
      if (! checkCDKObjectBind (vVIEWER, viewer, input))
      {
	 switch (input)
	 {
	    case KEY_TAB :
		 if (viewer->buttonCount > 1)
		 {
		    if (viewer->currentButton == (viewer->buttonCount - 1))
		    {
		       viewer->currentButton = 0;
		    }
		    else
		    {
		       viewer->currentButton++;
		    }

		    /* Redraw the buttons. */
		    drawCDKViewerButtons (viewer);
		 }
		 break;

	    case CDK_PREV :
		 if (viewer->buttonCount > 1)
		 {
		    if (viewer->currentButton == 0)
		    {
		       viewer->currentButton = viewer->buttonCount - 1;
		    }
		    else
		    {
		       viewer->currentButton--;
		    }

		    /* Redraw the buttons. */
		    drawCDKViewerButtons (viewer);
		 }
		 break;

	    case KEY_UP :
		 if (viewer->currentTop > 0)
		 {
		    viewer->currentTop--;
		    REFRESH = TRUE;
		 }
		 else
		 {
		    Beep();
		 }
		 break;

	    case KEY_DOWN :
		 if (viewer->currentTop < viewer->maxTopLine)
		 {
		    viewer->currentTop++;
		    REFRESH = TRUE;
		 }
		 else
		 {
		    Beep();
		 }
		 break;

	    case KEY_RIGHT :
		 if (viewer->leftChar < viewer->maxLeftChar)
		 {
		    viewer->leftChar++;
		    REFRESH = TRUE;
		 }
		 else
		 {
		    Beep();
		 }
		 break;

	    case KEY_LEFT :
		 if (viewer->leftChar > 0)
		 {
		    viewer->leftChar--;
		    REFRESH = TRUE;
		 }
		 else
		 {
		    Beep();
		 }
		 break;

	    case KEY_PPAGE :
		 if (viewer->currentTop > 0)
		 {
		    if ((viewer->currentTop - (viewer->viewSize-1)) > 0)
		    {
		       viewer->currentTop = viewer->currentTop - (viewer->viewSize - 1);
		    }
		    else
		    {
		       viewer->currentTop = 0;
		    }
		    REFRESH = TRUE;
		 }
		 else
		 {
		    Beep();
		 }
		 break;

	    case KEY_NPAGE :
		 if (viewer->currentTop < viewer->maxTopLine)
		 {
		    if ((viewer->currentTop + viewer->viewSize) < viewer->maxTopLine)
		    {
		       viewer->currentTop = viewer->currentTop + (viewer->viewSize - 1);
		    }
		    else
		    {
		       viewer->currentTop = viewer->maxTopLine;
		    }
		    REFRESH = TRUE;
		 }
		 else
		 {
		    Beep();
		 }
		 break;

	    case KEY_HOME :
		 viewer->leftChar = 0;
		 REFRESH = TRUE;
		 break;

	    case KEY_END :
		 viewer->leftChar = viewer->maxLeftChar;
		 REFRESH = TRUE;
		 break;

	    case 'g' : case '1' : case '<' :
		 viewer->currentTop = 0;
		 REFRESH = TRUE;
		 break;

	    case 'G' : case '>' :
		 viewer->currentTop = viewer->maxTopLine;
		 REFRESH = TRUE;
		 break;

	    case 'L' :
		 x = (int) ((viewer->listSize + viewer->currentTop) / 2);
		 if (x < viewer->maxTopLine)
		 {
		    viewer->currentTop = x;
		    REFRESH = TRUE;
		 }
		 else
		 {
		    Beep();
		 }
		 break;

	    case 'l' :
		 x = (int) (viewer->currentTop / 2);
		 if (x >= 0)
		 {
		    viewer->currentTop = x;
		    REFRESH = TRUE;
		 }
		 else
		 {
		    Beep();
		 }
		 break;

	    case '?' :
		 SearchDirection = UP;
		 getAndStorePattern (ScreenOf(viewer));
		 if (! searchForWord(viewer, SearchPattern, SearchDirection))
		 {
		    PatternNotFound(viewer, SearchPattern);
		 }
		 REFRESH = TRUE;
		 break;

	    case '/' :
		 SearchDirection = DOWN;
		 getAndStorePattern (ScreenOf(viewer));
		 if (! searchForWord(viewer, SearchPattern, SearchDirection))
		 {
		    PatternNotFound(viewer, SearchPattern);
		 }
		 REFRESH = TRUE;
		 break;

	    case 'N' :
	    case 'n' :
		 if (SearchPattern == 0)
		 {
		    sprintf (temp, "</5>There is no pattern in the buffer.<!5>");
		    popUpLabel (viewer, tempInfo);
		 }
		 else if (! searchForWord(viewer, SearchPattern, ((input == 'n') ? SearchDirection : !SearchDirection)))
		 {
		    PatternNotFound(viewer, SearchPattern);
		 }
		 REFRESH = TRUE;
		 break;

	    case ':' :
		 viewer->currentTop	= jumpToLine (viewer);
		 REFRESH		= TRUE;
		 break;

	    case 'i' : case 's' : case 'S' :
		 popUpLabel(viewer, fileInfo);
		 REFRESH = TRUE;
		 break;

	    case KEY_ESC :
		 freeCharList (fileInfo, 6);
		 setExitType(viewer, input);
		 return -1;

	    case KEY_ENTER :
		 freeCharList (fileInfo, 6);
		 setExitType(viewer, input);
		 return viewer->currentButton;

	    case CDK_REFRESH :
		 eraseCDKScreen (ScreenOf(viewer));
		 refreshCDKScreen (ScreenOf(viewer));
		 break;

	    default :
		 Beep();
		 break;
	 }
      }

      /* Do we need to redraw the screen??? */
      if (REFRESH)
      {
	 drawCDKViewerInfo (viewer);
      }
   }
}

/*
 * This searches the document looking for the given word.
 */
static void getAndStorePattern (CDKSCREEN *screen)
{
   CDKENTRY *getPattern = 0;
   char *temp		= 0;
   char *list		= 0;

   /* Check the direction. */
   if (SearchDirection == UP)
   {
      temp = "</5>Search Up  : <!5>";
   }
   else
   {
      temp = "</5>Search Down: <!5>";
   }

   /* Pop up the entry field. */
   getPattern	= newCDKEntry (screen, CENTER, CENTER,
				0, temp,
				COLOR_PAIR(5)|A_BOLD,
				'.'|COLOR_PAIR(5)|A_BOLD,
				vMIXED, 10, 0, 256, TRUE, FALSE);

   /* Is there an old search pattern? */
   if (SearchPattern != 0)
   {
      setCDKEntry (getPattern, SearchPattern, getPattern->min, getPattern->max, ObjOf(getPattern)->box);
   }
   freeChar (SearchPattern);

   /* Activate this baby. */
   list = activateCDKEntry (getPattern, 0);

   /* Save the list. */
   if ((list != 0) || (strlen (list) != 0))
   {
      SearchPattern = copyChar (list);
   }

   /* Clean up. */
   destroyCDKEntry (getPattern);
}

/*
 * This searches for a line containing the word and realigns the value on the
 * screen.
 */
static int searchForWord (CDKVIEWER *viewer, char *pattern, int direction)
{
   int x, y, pos, len, plen;
   int found = 0;

   /* If the pattern is empty then return. */
   if (pattern != 0 && (plen = strlen(pattern)) != 0)
   {
      if (direction == DOWN)
      {
	 /* Start looking from 'here' down. */
	 for (x = viewer->currentTop + 1; !found && (x < viewer->listSize); x++)
	 {
	    len = chlen (viewer->list[x]);
	    for (y = pos = 0; y < len; y++)
	    {
	       int plainChar = CharOf(viewer->list[x][y]);

	       if (CharOf(pattern[pos]) != plainChar)
	       {
		  y -= pos;
		  pos = 0;
	       }
	       else if (++pos == plen)
	       {
		  viewer->currentTop = (x < viewer->maxTopLine ? x : viewer->maxTopLine);
		  viewer->leftChar = (y < viewer->boxWidth ? 0 : viewer->maxLeftChar);
		  found = 1;
		  break;
	       }

	    }
	 }
      }
      else
      {
	 /* Start looking from 'here' up. */
	 for (x = viewer->currentTop - 1; !found && (x >= 0); x--)
	 {
	    len = chlen (viewer->list[x]);
	    for (y = pos = 0; y < len; y++)
	    {
	       int plainChar = CharOf(viewer->list[x][y]);

	       if (CharOf(pattern[pos]) != plainChar)
	       {
		  y -= pos;
		  pos = 0;
	       }
	       else if (++pos == plen)
	       {
		  viewer->currentTop = x;
		  viewer->leftChar = (y < viewer->boxWidth ? 0 : viewer->maxLeftChar);
		  found = 1;
		  break;
	       }

	    }
	 }
      }
   }
   return(found);
}

/*
 * This allows us to 'jump' to a given line in the file.
 */
static int jumpToLine (CDKVIEWER *viewer)
{
   int line		= 0;
   CDKSCALE * newline	= newCDKScale (ScreenOf(viewer), CENTER, CENTER,
				"<C>Jump To Line", "</5>Line :", A_BOLD,
				intlen(viewer->listSize) + 1,
				viewer->currentTop + 1,
				0, viewer->maxTopLine + 1,
				1, 10, TRUE, TRUE);
   line = activateCDKScale (newline, 0);
   destroyCDKScale (newline);
   return ((line-1));
}

/*
 * This pops a little message up on the screen.
 */
static void popUpLabel (CDKVIEWER *viewer, char **mesg)
{
   CDKLABEL *label;

   /* Set up variables. */
   label	= newCDKLabel (ScreenOf(viewer), CENTER, CENTER, mesg, CDKcountStrings(mesg), TRUE, FALSE);

   /* Draw the label and wait. */
   drawCDKLabel (label, TRUE);
   getcCDKObject (ObjOf(label));

   /* Clean up. */
   destroyCDKLabel (label);
}

/*
 * This moves the viewer field to the given location.
 */
static void _moveCDKViewer (CDKOBJS *object, int xplace, int yplace, boolean relative, boolean refresh_flag)
{
   CDKVIEWER *viewer = (CDKVIEWER *)object;
   int currentX = getbegx(viewer->win);
   int currentY = getbegy(viewer->win);
   int xpos	= xplace;
   int ypos	= yplace;
   int xdiff	= 0;
   int ydiff	= 0;

   /*
    * If this is a relative move, then we will adjust where we want
    * to move to.
    */
   if (relative)
   {
      xpos = getbegx(viewer->win) + xplace;
      ypos = getbegy(viewer->win) + yplace;
   }

   /* Adjust the window if we need to. */
   alignxy (WindowOf(viewer), &xpos, &ypos, viewer->boxWidth, viewer->boxHeight);

   /* Get the difference. */
   xdiff = currentX - xpos;
   ydiff = currentY - ypos;

   /* Move the window to the new location. */
   moveCursesWindow(viewer->win, -xdiff, -ydiff);
   moveCursesWindow(viewer->shadowWin, -xdiff, -ydiff);

   /* Touch the windows so they 'move'. */
   refreshCDKWindow (WindowOf(viewer));

   /* Redraw the window, if they asked for it. */
   if (refresh_flag)
   {
      drawCDKViewer (viewer, ObjOf(viewer)->box);
   }
}

/*
 * This function draws the viewer widget.
 */
static void _drawCDKViewer (CDKOBJS *object, boolean Box)
{
   CDKVIEWER *viewer = (CDKVIEWER *)object;

   /* Do we need to draw in the shadow??? */
   if (viewer->shadowWin != 0)
   {
      drawShadow (viewer->shadowWin);
   }

   /* Box it if it was asked for. */
   if (Box)
   {
      drawObjBox (viewer->win, ObjOf(viewer));
      wrefresh (viewer->win);
   }

   /* Draw the info in the viewer. */
   drawCDKViewerInfo (viewer);
}

/*
 * This redraws the viewer buttons.
 */
static void drawCDKViewerButtons (CDKVIEWER *viewer)
{
   chtype character;
   int x;

   /* No buttons, no drawing. */
   if (viewer->buttonCount == 0)
   {
      return;
   }

   /* Redraw the buttons. */
   for (x=0; x < viewer->buttonCount; x++)
   {
      writeChtype (viewer->win, viewer->buttonPos[x],
		   viewer->boxHeight-2, viewer->button[x], HORIZONTAL,
		   0, viewer->buttonLen[x]);
   }

   /* Highlight the current button. */
   for (x=0; x < viewer->buttonLen[viewer->currentButton]; x++)
   {
      /* Strip the character of any extra attributes. */
      character = CharOf(viewer->button[viewer->currentButton][x]);

      /* Add the character into the window. */
      mvwaddch (viewer->win, viewer->boxHeight-2,
		viewer->buttonPos[viewer->currentButton] + x,
		character|viewer->buttonHighlight);
   }

   /* Refresh the window. */
   refreshCDKWindow (viewer->win);
}

/*
 * This sets the background attribute of the widget.
 */
static void _setBKattrViewer (CDKOBJS *object, chtype attrib)
{
   if (object != 0)
   {
      CDKVIEWER *widget = (CDKVIEWER *) object;

      wbkgd (widget->win, attrib);
   }
}

/*
 * Free any storage associated with the info-list.
 */
static void destroyInfo(CDKVIEWER *viewer)
{
   CDKfreeChtypes (viewer->list);
   freeChecked (viewer->listPos);
   freeChecked (viewer->listLen);

   viewer->list = 0;
   viewer->listPos = 0;
   viewer->listLen = 0;
}

/*
 * This function destroys the viewer widget.
 */
static void _destroyCDKViewer (CDKOBJS *object)
{
   if (object != 0)
   {
      CDKVIEWER *viewer = (CDKVIEWER *)object;

      destroyInfo(viewer);

      cleanCdkTitle (object);
      CDKfreeChtypes(viewer->button);
      freeChecked (viewer->buttonLen);
      freeChecked (viewer->buttonPos);

      /* Clean up the windows. */
      deleteCursesWindow (viewer->shadowWin);
      deleteCursesWindow (viewer->win);

      /* Unregister this object. */
      unregisterCDKObject (vVIEWER, viewer);
   }
}

/*
 * This function erases the viewer widget from the screen.
 */
static void _eraseCDKViewer (CDKOBJS *object)
{
   if (validCDKObject (object))
   {
      CDKVIEWER *viewer = (CDKVIEWER *)object;

      eraseCursesWindow (viewer->win);
      eraseCursesWindow (viewer->shadowWin);
   }
}

/*
 * This draws the viewer info lines.
 */
static void drawCDKViewerInfo (CDKVIEWER *viewer)
{
   int listAdjust	= 0;
   int lastLine		= 0;
   char temp[256];
   int x;

   /* Clear the window. */
   werase (viewer->win);

   drawCdkTitle (viewer->win, ObjOf(viewer));

   /* Draw in the current line at the top. */
   if (viewer->showLineInfo == TRUE)
   {
      /* Set up the info line and draw it. */
      if (viewer->inProgress)
      {
	 strcpy (temp, "processing...");
      }
      else if (viewer->listSize != 0)
      {
	 sprintf (temp, "%d/%d %2.0f%%",
			(viewer->currentTop + 1),
			viewer->listSize,
			((float)(viewer->currentTop + 1)/(float)viewer->listSize) * 100);
      }
      else
      {
	 sprintf (temp, "%d/%d %2.0f%%", 0, 0, 0.0);
      }

     /*
      * The listAdjust variable tells us if we have to shift down
      * one line because the person asked for the line X of Y line
      * at the top of the screen. We only want to set this to 1 if
      * they asked for the info line and there is no title, or if the
      * two items overlap.
      */
      if (TitleLinesOf(viewer) == 0
       || TitlePosOf(viewer)[0] < ((int)strlen(temp) + 2))
      {
	 listAdjust = 1;
      }
      writeChar (viewer->win, 1, (listAdjust ? TitleLinesOf(viewer) : 0) + 1,
		 temp, HORIZONTAL, 0, (int)strlen(temp));
   }

   /* Determine the last line to draw. */
   lastLine = (viewer->listSize <= viewer->viewSize
		? viewer->listSize
		: viewer->viewSize);
   lastLine -= listAdjust;

   /* Redraw the list. */
   for (x=0; x < lastLine; x++)
   {
      if (viewer->currentTop + x < viewer->listSize)
      {
	 int screenPos = viewer->listPos[viewer->currentTop + x] + 1 - viewer->leftChar;
	 if (screenPos >= 0)
	 {
	    writeChtype (viewer->win, screenPos,
			 x + TitleLinesOf(viewer) + listAdjust + 1,
			 viewer->list[x + viewer->currentTop],
			 HORIZONTAL, 0,
			 viewer->listLen[x + viewer->currentTop]);
	 }
	 else
	 {
	    writeChtype (viewer->win, 1,
			 x + TitleLinesOf(viewer) + listAdjust + 1,
			 viewer->list[x + viewer->currentTop],
			 HORIZONTAL,
			 viewer->leftChar - viewer->listPos[viewer->currentTop + x],
			 viewer->listLen[x + viewer->currentTop]);
	 }
      }
   }

   /* Box it if we have to. */
   if (ObjOf(viewer)->box)
   {
      drawObjBox (viewer->win, ObjOf(viewer));
      wrefresh (viewer->win);
   }

   /* Draw the separation line. */
   if (viewer->buttonCount > 0)
   {
      chtype boxattr = BXAttrOf(viewer);

      for (x=1; x <= viewer->boxWidth; x++)
      {
	 mvwaddch (viewer->win, viewer->boxHeight-3, x,
			HZCharOf(viewer) | boxattr);
      }
      mvwaddch (viewer->win, viewer->boxHeight-3, 0,
			ACS_LTEE | boxattr);
      mvwaddch (viewer->win, viewer->boxHeight-3,
			getmaxx(viewer->win) - 1,
			ACS_RTEE | boxattr);
   }

   /* Draw the buttons. This will call refresh on the viewer win. */
   drawCDKViewerButtons (viewer);
}

dummyInject(Viewer)

dummyFocus(Viewer)

dummyUnfocus(Viewer)

dummyRefreshData(Viewer)

dummySaveData(Viewer)

/*
 * The listSize may be negative, to assign no definite limit.
 */
static int createList(CDKVIEWER *swindow, int listSize)
{
   int status = 0;
   if (listSize <= 0)
   {
      destroyInfo(swindow);
   }
   else
   {
      chtype **newList = typeCallocN(chtype *, listSize + 1);
      int *newPos = typeCallocN(int, listSize + 1);
      int *newLen = typeCallocN(int, listSize + 1);

      if (newList != 0
       && newPos != 0
       && newLen != 0)
      {
	 status = 1;
	 destroyInfo(swindow);

	 swindow->list    = newList;
	 swindow->listPos = newPos;
	 swindow->listLen = newLen;
      }
      if (!status)
      {
	 CDKfreeChtypes(newList);
	 freeChecked(newPos);
	 freeChecked(newLen);
      }
   }
   return status;
}