//
// Copyright(c) 2005-2011 Louay Gammo. All rights reserved.
//

function CWInfo(brand, title, date, author, editor)
{
  this.brand = brand;
  this.title = title;
  this.date = date;
  this.author = author;
  this.editor = editor;
}

CWInfo.prototype.getBrand = function() {
  return this.brand;
};

CWInfo.prototype.getTitle = function() {
  return this.title;
};

CWInfo.prototype.getDate = function() {
  return this.date;
};

CWInfo.prototype.getAuthor = function() {
  return this.author;
};

CWInfo.prototype.getEditor = function() {
  return this.editor;
};

function Clue(row, col, answer, clue)
{
  this.row = row;
  this.col = col;
  this.answer = answer;
  this.clue = clue;
}

function CWClues()
{
  this.clues = new Array();
  this.key2seq = new Array();
  this.seq2key = new Array();
}

CWClues.prototype.addClue = function(key, row, col, answer, clue) {
  this.clues[parseInt(key)] = new Clue(row, col, answer, clue);
  this.seq2key.push(parseInt(key));
  this.key2seq[parseInt(key)] = this.seq2key.length - 1;
};

function CWGrid(height, width, defaultType, encoding)
{
  this.letterCount = 0;
  this.width = width;
  this.height = height;

  if (encoding != null || encoding != '') {
    var rows = encoding.split(',');
  } else {
    var rows = null;
  }

  this.grid = new Array(height);
  for(var i = 0; i < height; i++) {
    this.grid[i] = new Array(width);
    for(var j = 0; j < width; j++) {
      if (rows != null) {
	var c = rows[i].charAt(j);
	if (c == '@') {
	  var btype = 'block';
	} else {
	  var btype = 'letter';
	}
	this.grid[i][j] = new CWCell(btype, c);
      } else {
	this.grid[i][j] = new CWCell(defaultType, null);
      }
    }
  }
}

CWGrid.prototype.setHorizontalSpan = function (index, row, col, word)
{
  this.letterCount += word.length;
  for (var j = 0; j < word.length; j++) {
    this.grid[row][col+j] = new CWCell('letter', word.charAt(j));
    if (j == 0) {
      this.grid[row][col+j].setIndex('start-across', index);
    }

    this.grid[row][col+j].setIndex('across', index);
  }
}

CWGrid.prototype.addVerticalIndex = function (index, row, col, len)
{
  for (var j = 0; j < len; j++) {
    if (j == 0) {
      this.grid[row+j][col].setIndex('start-down', index);
    }

    this.grid[row+j][col].setIndex('down', index);
  }
}

function CWCell(cellType, cellValue)
{
  this.type = cellType;
  this.value = cellValue;
  this.words = new Array();
  this.index = new Array();
  this.state = 0;
}

CWCell.prototype.resetState = function() {
  this.state = 0;
};

CWCell.prototype.getState = function() {
  return this.state;
};

CWCell.prototype.isErroneous = function() {
  return (this.state & 0x04);
};

CWCell.prototype.isConfirmed = function() {
  return (this.state & 0x02);
};

CWCell.prototype.isRevealed = function() {
  return (this.state & 0x01);
};

CWCell.prototype.setErroneous = function() {
  this.state |= 0x04;
};

CWCell.prototype.setConfirmed = function() {
  this.state |= 0x02;
};

CWCell.prototype.setRevealed = function() {
  this.state |= 0x01;
};

CWCell.prototype.resetIndex = function() {
  this.index = new Array();
};

CWCell.prototype.setIndex = function(key, index) {
  this.index[key] = parseInt(index);
};

CWCell.prototype.setWord = function(key, word) {
  this.words[key] = word;
};

CWCell.prototype.setType = function(type) {
  this.type = type;
};

CWCell.prototype.getType = function() {
  return this.type;
};

//
// Common JS
//
var curI = 0;
var curJ = 0;
var curDir = 'across';

var splashScreen = true;

var prevI = 0;
var prevJ = 0;
var prevDir = 'down';

var ascii_backspace = 8;   //TBD?
var ascii_left      = 37;  //TBD?
var ascii_up        = 38;  //TBD?
var ascii_right     = 39;  //TBD?
var ascii_down      = 40;  //TBD?
var ascii_tab       = '\t'.charCodeAt(0);
var ascii_space     = ' '.charCodeAt(0);
var ascii_a         = 'A'.charCodeAt(0);
var ascii_z         = 'Z'.charCodeAt(0);
var ascii_block     = 'B'.charCodeAt(0); //with control/shift keys
var ascii_editclue  = 'E'.charCodeAt(0); //with control/shift keys
var ascii_nextline  = '\r'.charCodeAt(0); //windows specific???

function showMessage(msg, append)
{
  var elt = document.getElementById('message');
  if (elt == null) {
      return
  }

  if (typeof(append) == 'undefined') {
      append = false;
  }

  if (append) {
    elt.value = elt.value + msg;
  } else {
    elt.value = msg;
  }
}

function displayUserMessage(id, show)
{
  var elt = document.getElementById(id);
  if (elt == null) {
    return false;
  }

  if (show) {
      elt.style.display = 'block';
  } else {
      elt.style.display = 'none';
  }

  return true;
}

function showUserMessage(id, focusId)
{
  var elt = document.getElementById(id);
  if (elt == null) {
    return false;
  }

  elt.style.display = 'block';

  var elt = document.getElementById(focusId);
  if (elt == null) {
    return false;
  }

  elt.focus();

  return true;
}

function CancelGame(msg, href)
{
  var agree = confirm(msg);
  if (agree == false) {
    return;
  }

  document.location.href = href;

  return false;
}

function setClueLineWidth()
{
  var targetId = 'clueLineContainer';
  var srcId =  'grid';

  var t = document.getElementById(targetId);
  if (t == null) {
    return false;
  }

  var s = document.getElementById(srcId);
  if (s == null) {
    return false;
  }

  var w = s.firstChild.offsetWidth;
  if (w > 0) {
    t.style.width = w + 'px';
  }

  counter++;
  showMessage('counter='+counter+' width='+w, true);
}
var counter = 0;

// var ImageCache = new Array();
// function ImagePreloader()
// {
//     for (var i = 0; i < 9; i++) {
//         ImageCache[i] = new Image();
//         ImageCache[i].src = '/crossword/icons/icon_' + i + '.gif';
//     }
// }