/**
 * phpBB3 forum functions
 */

/**
 * Window popup
 */
function popup(url, width, height, name) {
  if (!name) {
    name = '_popup';
  }

  window.open(url.replace(/&/g, '&'), name, 'height=' + height + ',resizable=yes,scrollbars=yes, width=' + width);
  return false;
}

/**
 * Jump to page
 */
function jumpto() {
  var page = prompt(jump_page, on_page);

  if (page !== null && !isNaN(page) && page > 0) {
    document.location.href = base_url.replace(/&/g, '&') + '&start=' + ((page - 1) * per_page);
  }
}

/**
 * Mark/unmark checklist
 * id = ID of parent container, name = name prefix, state = state [true/false]
 */
function marklist(id, name, state) {
  var parent = document.getElementById(id);
  if (!parent) {
    eval('parent = document.' + id);
  }

  if (!parent) {
    return;
  }

  var rb = parent.getElementsByTagName('input');

  for (var r = 0; r < rb.length; r++) {	
    if (rb[r].name.substr(0, name.length) == name) {
      rb[r].checked = state;
    }
  }
}

/**
 * Resize viewable area for attached image or topic review panel (possibly others to come)
 * e = element
 */
function viewableArea(e, itself) {
  if (!e) return;
  if (!itself) {
    e = e.parentNode;
  }

  if (!e.vaHeight) {
    // Store viewable area height before changing style to auto
    e.vaHeight = e.offsetHeight;
    e.vaMaxHeight = e.style.maxHeight;
    e.style.height = 'auto';
    e.style.maxHeight = 'none';
    e.style.overflow = 'visible';
  } else {
    // Restore viewable area height to the default
    e.style.height = e.vaHeight + 'px';
    e.style.overflow = 'auto';
    e.style.maxHeight = e.vaMaxHeight;
    e.vaHeight = false;
  }
}

/**
 * Set display of page element
 * s[-1,0,1] = hide,toggle display,show
 */
function dE(n, s) {
  var e = document.getElementById(n);

  if (!s) {
    s = (e.style.display == '' || e.style.display == 'block') ? -1 : 1;
  }
  e.style.display = (s == 1) ? 'block' : 'none';
}

/**
 * Alternate display of subPanels
 */
function subPanels(p) {
  var i, e, t;

  if (typeof(p) == 'string') {
    show_panel = p;
  }

  for (i = 0; i < panels.length; i++) {
    e = document.getElementById(panels[i]);
    t = document.getElementById(panels[i] + '-tab');

    if (e) {
      if (panels[i] == show_panel) {
        e.style.display = 'block';
        if (t) {
          t.className = 'activetab';
        }
      } else {
        e.style.display = 'none';
        if (t) {
          t.className = '';
        }
      }
    }
  }
}

/**
 * Call print preview
 */
function printPage() {
  if (is_ie) {
    printPreview();
  } else {
    window.print();
  }
}

/**
 * Show/hide groups of blocks
 * c = CSS style name
 * e = checkbox element
 * t = toggle dispay state (used to show 'grip-show' image in the profile block when hiding the profiles) 
 */
function displayBlocks(c, e, t) {
  var s = (e.checked == true) ?  1 : -1;

  if (t) {
    s *= -1;
  }

  var divs = document.getElementsByTagName("DIV");

  for (var d = 0; d < divs.length; d++) {
    if (divs[d].className.indexOf(c) == 0) {
      divs[d].style.display = (s == 1) ? 'none' : 'block';
    }
  }
}

function selectCode(a) {
  // Get ID of code block
  var e = a.parentNode.parentNode.getElementsByTagName('CODE')[0];

  // Not IE
  if (window.getSelection) {
    var s = window.getSelection();
    if (s.setBaseAndExtent) {
      // Safari
      s.setBaseAndExtent(e, 0, e, e.innerText.length - 1);
    } else {
      // Firefox and Opera
      var r = document.createRange();
      r.selectNodeContents(e);
      s.removeAllRanges();
      s.addRange(r);
    }
  } else if (document.getSelection) {
    // Some older browsers
    var s = document.getSelection();
    var r = document.createRange();
    r.selectNodeContents(e);
    s.removeAllRanges();
    s.addRange(r);
  } else if (document.selection) {
    // IE
    var r = document.body.createTextRange();
    r.moveToElementText(e);
    r.select();
  }
}

/**
 * Play quicktime file by determining it's width/height
 * from the displayed rectangle area
 */
function play_qt_file(obj) {
  var rectangle = obj.GetRectangle();

  if (rectangle) {
    rectangle = rectangle.split(',');
    var x1 = parseInt(rectangle[0]);
    var x2 = parseInt(rectangle[2]);
    var y1 = parseInt(rectangle[1]);
    var y2 = parseInt(rectangle[3]);

    var width = (x1 < 0) ? (x1 * -1) + x2 : x2 - x1;
    var height = (y1 < 0) ? (y1 * -1) + y2 : y2 - y1;
  } else {
    var width = 200;
    var height = 0;
  }

  obj.width = width;
  obj.height = height + 16;

  obj.SetControllerVisible(true);
  obj.Play();
}