window.SINGLE_TAB = "  ";
window.ImgCollapsed = contextPath + "img/datatables/sort_asc.png";
window.ImgExpanded = contextPath + "img/datatables/sort_desc.png";
window.QuoteKeys = true;
function $id(id){ return document.getElementById(id); }
function IsArray(obj) {
  return  obj && 
          typeof obj === 'object' && 
          typeof obj.length === 'number' &&
          !(obj.propertyIsEnumerable('length'));
}

function Process(){
  window.TAB = "    ";
  window.IsCollapsible = true;
  var json = $id("RawJson").innerHTML;
  var html = "";
  try{
    if(json == "") json = "\"\"";
    var obj = eval("["+json+"]");
    html = ProcessObject(obj[0], 0, false, false, false);
    $id("Canvas").innerHTML = "<PRE style='font-family:Helvetica,Arial,sans-serif;'>"+html+"</PRE>";
  }catch(e){
    alert("JSON数据格式不正确:\n"+e.message);
    $id("Canvas").innerHTML = "";
  }
}

window._dateObj = new Date();
window._regexpObj = new RegExp();
function ProcessObject(obj, indent, addComma, isArray, isPropertyContent){
  var html = "";
  var comma = (addComma) ? "<span class='Comma'>,</span> " : ""; 
  var type = typeof obj;
  var clpsHtml ="";
  if(IsArray(obj)){
    if(obj.length == 0){
      html += GetRow(indent, "<span class='ArrayBrace'>[ ]</span>"+comma, isPropertyContent);
    }else{
      clpsHtml = window.IsCollapsible ? "<span><img src=\""+window.ImgExpanded+"\" onClick=\"ExpImgClicked(this)\" /></span><span class='collapsible'>" : "";
      html += GetRow(indent, "<span class='ArrayBrace'>[</span>"+clpsHtml, isPropertyContent);
      for(var i = 0; i < obj.length; i++){
        html += ProcessObject(obj[i], indent + 1, i < (obj.length - 1), true, false);
      }
      clpsHtml = window.IsCollapsible ? "</span>" : "";
      html += GetRow(indent, clpsHtml+"<span class='ArrayBrace'>]</span>"+comma);
    }
  }else if(type == 'object'){
    if (obj == null){
        html += FormatLiteral("null", "", comma, indent, isArray, "Null");
    }else if (obj.constructor == window._dateObj.constructor) { 
        html += FormatLiteral("new Date(" + obj.getTime() + ") /*" + obj.toLocaleString()+"*/", "", comma, indent, isArray, "Date"); 
    }else if (obj.constructor == window._regexpObj.constructor) {
        html += FormatLiteral("new RegExp(" + obj + ")", "", comma, indent, isArray, "RegExp"); 
    }else{
      var numProps = 0;
      for(var prop in obj) numProps++;
      if(numProps == 0){
        html += GetRow(indent, "<span class='ObjectBrace'>{ }</span>"+comma, isPropertyContent);
      }else{
        clpsHtml = window.IsCollapsible ? "<span><img src=\""+window.ImgExpanded+"\" onClick=\"ExpImgClicked(this)\" /></span><span class='collapsible'>" : "";
        html += GetRow(indent, "<span class='ObjectBrace'>{</span>"+clpsHtml, isPropertyContent);

        var j = 0;

        for(var prop in obj){

          var quote = window.QuoteKeys ? "\"" : "";

          html += GetRow(indent + 1, "<span class='PropertyName'>"+quote+prop+quote+"</span>: "+ProcessObject(obj[prop], indent + 1, ++j < numProps, false, true));

        }

        clpsHtml = window.IsCollapsible ? "</span>" : "";

        html += GetRow(indent, clpsHtml+"<span class='ObjectBrace'>}</span>"+comma);

      }

    }

  }else if(type == 'number'){

    html += FormatLiteral(obj, "", comma, indent, isArray, "Number");

  }else if(type == 'boolean'){

    html += FormatLiteral(obj, "", comma, indent, isArray, "Boolean");

  }else if(type == 'function'){

    if (obj.constructor == window._regexpObj.constructor) {

        html += FormatLiteral("new RegExp(" + obj + ")", "", comma, indent, isArray, "RegExp"); 

    }else{

        obj = FormatFunction(indent, obj);

        html += FormatLiteral(obj, "", comma, indent, isArray, "Function");

    }

  }else if(type == 'undefined'){

    html += FormatLiteral("undefined", "", comma, indent, isArray, "Null");

  }else{

    html += FormatLiteral(obj.toString().split("\\").join("\\\\").split('"').join('\\"'), "\"", comma, indent, isArray, "String");

  }

  return html;

}

function FormatLiteral(literal, quote, comma, indent, isArray, style){

  if(typeof literal == 'string')

    literal = literal.split("<").join("&lt;").split(">").join("&gt;");

  var str = "<span class='"+style+"'>"+quote+literal+quote+comma+"</span>";

  if(isArray) str = GetRow(indent, str);

  return str;

}

function FormatFunction(indent, obj){

  var tabs = "";

  for(var i = 0; i < indent; i++) tabs += window.TAB;

  var funcStrArray = obj.toString().split("\n");

  var str = "";

  for(var i = 0; i < funcStrArray.length; i++){

    str += ((i==0)?"":tabs) + funcStrArray[i] + "\n";

  }

  return str;

}

function GetRow(indent, data, isPropertyContent){

  var tabs = "";

  for(var i = 0; i < indent && !isPropertyContent; i++) tabs += window.TAB;

  if(data != null && data.length > 0 && data.charAt(data.length-1) != "\n")

    data = data+"\n";

  return tabs+data;                       

}

function CollapsibleViewClicked(){

  $id("CollapsibleViewDetail").style.visibility = $id("CollapsibleView").checked ? "visible" : "hidden";

  Process();

}



function QuoteKeysClicked(){

  window.QuoteKeys = $id("QuoteKeys").checked;

  Process();

}



function CollapseAllClicked(){

  EnsureIsPopulated();

  TraverseChildren($id("Canvas"), function(element){

    if(element.className == 'collapsible'){

      MakeContentVisible(element, false);

    }

  }, 0);

}

function ExpandAllClicked(){

  EnsureIsPopulated();

  TraverseChildren($id("Canvas"), function(element){

    if(element.className == 'collapsible'){

      MakeContentVisible(element, true);

    }

  }, 0);

}

function MakeContentVisible(element, visible){

  var img = element.previousSibling.firstChild;

  if(!!img.tagName && img.tagName.toLowerCase() == "img"){

    element.style.display = visible ? 'inline' : 'none';

    element.previousSibling.firstChild.src = visible ? window.ImgExpanded : window.ImgCollapsed;

  }

}

function TraverseChildren(element, func, depth){

  for(var i = 0; i < element.childNodes.length; i++){

    TraverseChildren(element.childNodes[i], func, depth + 1);

  }

  func(element, depth);

}

function ExpImgClicked(img){

  var container = img.parentNode.nextSibling;

  if(!container) return;

  var disp = "none";

  var src = window.ImgCollapsed;

  if(container.style.display == "none"){

      disp = "inline";

      src = window.ImgExpanded;

  }

  container.style.display = disp;

  img.src = src;

}

function CollapseLevel(level){

  EnsureIsPopulated();

  TraverseChildren($id("Canvas"), function(element, depth){

    if(element.className == 'collapsible'){

      if(depth >= level){

        MakeContentVisible(element, false);

      }else{

        MakeContentVisible(element, true);  

      }

    }

  }, 0);

}

function TabSizeChanged(){

  Process();

}

function SetTab(){

  var select = $id("TabSize");

  window.TAB = MultiplyString(parseInt(select.options[select.selectedIndex].value), window.SINGLE_TAB);

}

function EnsureIsPopulated(){

  if(!$id("Canvas").innerHTML && !!$id("RawJson").value) Process();

}

function MultiplyString(num, str){

  var sb =[];

  for(var i = 0; i < num; i++){

    sb.push(str);

  }

  return sb.join("");

}

function SelectAllClicked(){



  if(!!document.selection && !!document.selection.empty) {

    document.selection.empty();

  } else if(window.getSelection) {

    var sel = window.getSelection();

    if(sel.removeAllRanges) {

      window.getSelection().removeAllRanges();

    }

  }



  var range = 

      (!!document.body && !!document.body.createTextRange)

          ? document.body.createTextRange()

          : document.createRange();

  

  if(!!range.selectNode)

    range.selectNode($id("Canvas"));

  else if(range.moveToElementText)

    range.moveToElementText($id("Canvas"));

  

  if(!!range.select)

    range.select($id("Canvas"));

  else

    window.getSelection().addRange(range);

}

function LinkToJson(){

  var val = $id("RawJson").value;

  val = escape(val.split('/n').join(' ').split('/r').join(' '));

  $id("InvisibleLinkUrl").value = val;

  $id("InvisibleLink").submit();

}