// Finished code: Sorting and Paging

jQuery.fn.alternateRowColors = function() {
  $('tbody tr:odd', this)
    .removeClass('even').addClass('odd');
  $('tbody tr:even', this)
    .removeClass('odd').addClass('even');
  return this;
};

$(document).ready(function() {
  $('table.sortable').each(function() {
    var $table = $(this);
    $table.alternateRowColors();
    $('th', $table).each(function(column) {
      var $header = $(this);
      var findSortKey;
      if ($header.is('.sort-alpha')) {
        findSortKey = function($cell) {
          return $cell.find('.sort-key').text().toUpperCase()
            + ' ' + $cell.text().toUpperCase();
        };
      }
      else if ($header.is('.sort-numeric')) {
        findSortKey = function($cell) {
          var key = $cell.text().replace(/^[^\d.]*/, '');
          key = parseFloat(key);
          return isNaN(key) ? 0 : key;
        };
      }
      else if ($header.is('.sort-date')) {
        findSortKey = function($cell) {
          return Date.parse('1 ' + $cell.text());
        };
      }
          
      if (findSortKey) {
        $header.addClass('clickable').hover(function() {
          $header.addClass('hover');
        }, function() {
          $header.removeClass('hover');
        }).click(function() {
          var sortDirection = 1;
          if ($header.is('.sorted-asc')) {
            sortDirection = -1;
          }
          var rows = $table.find('tbody > tr').get();
          $.each(rows, function(index, row) {
            var $cell = $(row).children('td').eq(column);
            row.sortKey = findSortKey($cell);
          });
          rows.sort(function(a, b) {
            if (a.sortKey < b.sortKey) return -sortDirection;
            if (a.sortKey > b.sortKey) return sortDirection;
            return 0;
          });
          $.each(rows, function(index, row) {
            $table.children('tbody').append(row);
            row.sortKey = null;
          });
          $table.find('th').removeClass('sorted-asc')
            .removeClass('sorted-desc');
          if (sortDirection == 1) {
            $header.addClass('sorted-asc');
          }
          else {
            $header.addClass('sorted-desc');
          }
          $table.find('td').removeClass('sorted')
            .filter(':nth-child(' + (column + 1) + ')')
            .addClass('sorted');
          $table.alternateRowColors();
          $table.trigger('repaginate');
        });
      }
    });
  });
});

$(document).ready(function() {
  $('table.paginated').each(function() {
    var currentPage = 0;
    var numPerPage = 30;
    var $table = $(this);
    $table.bind('repaginate', function() {
      $table.find('tbody tr').hide()
        .slice(currentPage * numPerPage,
          (currentPage + 1) * numPerPage)
        .show();
    });
    var numRows = $table.find('tbody tr').length;
    var numPages = Math.ceil(numRows / numPerPage);
    var $pager = $('<div class="pager"></div>');
    for (var page = 0; page < numPages; page++) {
      $('<span class="page-number"></span>').text(page + 1)
        .bind('click', {newPage: page}, function(event) {
          currentPage = event.data['newPage'];
          $table.trigger('repaginate');
          $(this).addClass('active')
            .siblings().removeClass('active');
        }).appendTo($pager).addClass('clickable');
    }
    $pager.insertBefore($table)
      .find('span.page-number:first').addClass('active');
  }).trigger('repaginate');
});

$(document).ready(function() {
  $('table.striped').bind('stripe', function() {
    $('tbody', this).each(function() {
      $(this).find('tr:not(:has(th))')
        .filter(function() {
          return this.style.display != 'none';
        })
        .removeClass('odd').addClass('even')
        .filter(function(index) {
          return (index % 6) < 3;
        }).removeClass('even').addClass('odd');
    });
  }).trigger('stripe');
});

$(document).ready(function() {
  var $authorCells = $('table.striped td:nth-child(3)');
  var $tooltip = $('<div id="tooltip"></div>').appendTo('body');
  
  var positionTooltip = function(event) {
    var tPosX = event.pageX;
    var tPosY = event.pageY + 20;
    $tooltip.css({top: tPosY, left: tPosX});
  };
  var showTooltip = function(event) {
    var authorName = $(this).text();
    var action = 'Highlight';
    if ($(this).parent().is('.highlight')) {
      action = 'Unhighlight';
    }
    $tooltip
      .text(action + ' all articles by ' + authorName)
      .show();
    positionTooltip(event);
  };
  var hideTooltip = function() {
    $tooltip.hide();
  };

  $authorCells
    .addClass('clickable')
    .hover(showTooltip, hideTooltip)
    .mousemove(positionTooltip)
    .click(function(event) {
      var authorName = $(this).text();
      $authorCells.each(function(index) {
        if (authorName == $(this).text()) {
          $(this).parent().toggleClass('highlight');
        }
        else {
          $(this).parent().removeClass('highlight');
        }
      });
      showTooltip.call(this, event);
    });
});

$(document).ready(function() {
  var collapseIcon = 'bullet_toggle_minus.png';
  var collapseText = 'Collapse this section';
  var expandIcon = 'bullet_toggle_plus.png';
  var expandText = 'Expand this section';
  $('table.collapsible tbody').each(function() {
    var $section = $(this);
    $('<img />').attr('src', collapseIcon)
      .attr('alt', collapseText)
      .prependTo($section.find('th'))
      .addClass('clickable')
      .click(function() {
        if ($section.is('.collapsed')) {
          $section.removeClass('collapsed')
            .find('tr:not(:has(th)):not(.filtered)')
            .fadeIn('fast');
          $(this).attr('src', collapseIcon)
            .attr('alt', collapseText);
        }
        else {
          $section.addClass('collapsed')
            .find('tr:not(:has(th))')
            .fadeOut('fast', function() {
              $(this).css('display', 'none');
            });
          $(this).attr('src', expandIcon)
            .attr('alt', expandText);
        }
        $section.parent().trigger('stripe');
      });
  });
});

$(document).ready(function() {
  $('table.filterable').each(function() {
    var $table = $(this);

    $table.find('th').each(function(column) {
      if ($(this).is('.filter-column')) {
        var $filters = $('<div class="filters"></div>');
        $('<h3></h3>')
          .text('Filter by ' + $(this).text() + ':')
          .appendTo($filters);
        
        $('<div class="filter">all</div>').click(function() {
          $table.find('tbody tr').removeClass('filtered');
          $(this).addClass('active')
            .siblings().removeClass('active');
          $table.trigger('stripe');
        }).addClass('clickable active').appendTo($filters);

        var keywords = {};
        $table.find('td:nth-child(' + (column + 1) + ')')
          .each(function() {
            keywords[$(this).text()] = $(this).text();
          });        

        $.each(keywords, function(index, keyword) {
          $('<div class="filter"></div>').text(keyword)
            .bind('click', {key: keyword}, function(event) {
              $('tr:not(:has(th))', $table).each(function() {
                var value = $('td', this).eq(column).text();
                if (value == event.data['key']) {
                  $(this).removeClass('filtered');
                }
                else {
                  $(this).addClass('filtered');
                }
              });
              $(this).addClass('active')
                .siblings().removeClass('active');
              $table.trigger('stripe');
            }).addClass('clickable').appendTo($filters);
        });
      
        $filters.insertBefore($table);
      }
    });
  });
});