EVR.include("level/summary/graph/Margin.js");
EVR.include("level/summary/graph/Set.js");
EVR.include("level/summary/graph/Plot.js");
EVR.Level.Summary.Graph = function(cell, level)
{
   this.level = level;
   this.road = level.road;
   this.field = level.container;
   EVR.Table.call(this, cell, 1, 1);
   this.title = GRAPH_TITLE;
   this.font_size = GRAPH_FONT_SIZE;
   this.font_color = GRAPH_FONT_COLOR;
   this.colors = GRAPH_COLORS;
   this.set_measurements();
   this.element.bgColor = GRAPH_PLOT_BACKGROUND_COLOR;
   cell.style.verticalAlign = "middle";
   cell.style.paddingLeft = GRAPH_MARGIN;
   this.add_components();
   this.initialize_sets();
   this.plot = new EVR.Level.Summary.Graph.Plot(this, this.sets);
   this.insert_title();
   this.append();
}
EVR.Level.Summary.Graph.prototype = new EVR.Table;
EVR.Level.Summary.Graph.prototype.set_measurements = function()
{
   var level = this.level;
   var history = level.history;
   var measurements = [history.get_accuracies(), history.get_times()];
   for (var ii = 0; ii < measurements.length; ii++)
   {
      measurements[ii] = measurements[ii].slice(-GRAPH_HISTORY_LENGTH);
   }
   this.measurements = measurements;
}
EVR.Level.Summary.Graph.prototype.insert_title = function()
{
   var cell = this.insert_cell(this.insert_row(0));
   var text = this.build_title_text();
   var font = GRAPH_TITLE_FONT;
   var color = this.font_color;
   var size = this.font_size;
   var title = new EVR.Text(cell, text, font, color, size, this.field);
   cell.height = "1";
   cell.style.background = GRAPH_TITLE_BACKGROUND;
   cell.style.textAlign = "center";
   cell.style.letterSpacing = GRAPH_TITLE_LETTER_SPACING;
   cell.colSpan = this.get_rows()[1].cells.length;
   this.title = title;
}
EVR.Level.Summary.Graph.prototype.build_title_text = function()
{
   var count = this.measurements[0].length;
   var text = GRAPH_TITLE;
   if (count > 1)
   {
      text += " " + count;
   }
   return text;
}
EVR.Level.Summary.Graph.prototype.add_components = function()
{
   var row = this.insert_row();
   var cells = [];
   cells[0] = [this.insert_margin_cell(row)];
   cells[1] = [this.insert_margin_cell(row)];
   this.first_row = row;
   row = this.insert_row();
   cells[0].push(this.insert_margin_cell(row, true));
   cells[1].push(this.insert_margin_cell(row, true));
   var colors = this.colors;
   var left = new EVR.Level.Summary.Graph.Margin(cells[0], this, colors[0]);
   var right = new EVR.Level.Summary.Graph.Margin(cells[1], this, colors[1]);
   this.margins = [left, right];
}
EVR.Level.Summary.Graph.prototype.insert_margin_cell = function(row, bottom)
{
   var cell = this.insert_cell(row);
   cell.style.padding = "0 " + GRAPH_MARGIN_PADDING;
   cell.style.verticalAlign = bottom ? "bottom" : "top";
   cell.style.backgroundColor = GRAPH_MARGIN_BACKGROUND;
   return cell;
}
EVR.Level.Summary.Graph.prototype.initialize_sets = function()
{
   var sets = [];
   var margins = this.margins;
   var measurements = this.measurements;
   var reverse, color, set;
   for (var ii = 0, len = measurements.length; ii < len; ii++)
   {
      reverse = measurements[ii][0] instanceof EVR.Time;
      color = this.colors[ii];
      set = new EVR.Level.Summary.Graph.Set(
	 measurements[ii], margins[ii], color, reverse);
      sets.push(set);
   }
   this.sets = sets;
}
EVR.Level.Summary.Graph.prototype.insert_plot_cell = function(spacer)
{
   var row = this.first_row;
   var cell = row.insertCell(row.cells.length - 1);
   cell.rowSpan = 2;
   cell.style.verticalAlign = "bottom";
   if (spacer)
   {
      cell.style.paddingRight = GRAPH_BAR_PADDING;
   }
   return cell;
}
EVR.Level.Summary.Graph.prototype.draw = function()
{
   this.title.set_font_size();
   this.plot.draw();
   var margins = this.margins;
   for (var ii = 0; ii < margins.length; ii++)
   {
      margins[ii].draw();
   }
}
EVR.Level.Summary.Graph.prototype.toString = function()
{
   return "[object EVR.Level.Summary.Graph]";
}

EVR.Level.Summary.Graph.Set = function(measurements, margin, color, reverse)
{
   this.measurements = measurements;
   this.margin = margin;
   this.color = color;
   this.reverse = reverse || false;
   this.set_bounds();
}
EVR.Level.Summary.Graph.Set.prototype.set_bounds = function()
{
   var measurements = this.measurements;
   var min = measurements[0];
   var max = measurements[0];
   var measurement;
   for (var ii = 0, len = measurements.length; ii < len; ii++)
   {
      measurement = measurements[ii];
      if (measurement > max)
      {
	 max = measurement;
      }
      else if (measurement < min)
      {
	 min = measurement;
      }
   }
   var reverse = this.reverse;
   this.best = reverse ? min : max;
   this.worst = reverse ? max : min;
   this.range = Math.abs(this.best - this.worst);
   this.display();
}
EVR.Level.Summary.Graph.Set.prototype.display = function()
{
   var precision = GRAPH_PRECISION;
   var worst = this.worst.toString(precision);
   var best = this.best.toString(precision);
   this.margin.set_bounds(worst, best);
}
EVR.Level.Summary.Graph.Set.prototype.toString = function()
{
   return "[EVR.Level.Summary.Graph.Set]";
}

EVR.Level.Summary.Graph.Margin = function(cells, graph, color)
{
   this.cells = cells;
   this.graph = graph;
   this.color = color;
   this.initialize_text();
}
EVR.Level.Summary.Graph.Margin.prototype.initialize_text = function()
{
   var cells = this.cells;
   this.maximum = this.build_text(cells[0]);
   this.minimum = this.build_text(cells[1]);
}
EVR.Level.Summary.Graph.Margin.prototype.build_text = function(cell)
{
   var graph = this.graph;
   var font = GRAPH_MARGIN_TEXT_FONT;
   var color = GRAPH_MARGIN_TEXT_COLOR;
   var size = graph.font_size;
   var field = graph.field;
   var text = new EVR.Text(cell, null, font, color, size, field);
   text.set_color(this.color);
   return text;
}
EVR.Level.Summary.Graph.Margin.prototype.set_bounds = function(minimum, maximum)
{
   this.minimum.set(minimum);
   this.maximum.set(maximum);
}
EVR.Level.Summary.Graph.Margin.prototype.draw = function()
{
   this.maximum.set_font_size();
   this.minimum.set_font_size();
}
EVR.Level.Summary.Graph.Margin.prototype.toString = function()
{
   return "[EVR.Level.Summary.Graph.Margin]";
}