javascript utils

js-utils.js

var fromDtoDate = function(dateStr) {
    if (!dateStr) return null;
    return new Date(parseFloat(/Date\(([^)]+)\)/.exec(dateStr)[1]));
} 
            
var formatDtoDate = function(dateObj) {
    if (!dateObj) return "";
    if (dateObj != typeof "date") dateObj = fromDtoDate(dateObj);
    var day = dateObj.getDate(), month = dateObj.getMonth() + 1;
    if (day < 10) day = "0" + day;
    if (month < 10) month = "0" + month;
    return day + "/" + month + "/" + dateObj.getFullYear();
} 
            
var evalToString = function(value) {
    if (!value) return '';
    if (typeof value == 'function') 
    {
        return value.apply(this, Array.prototype.slice.call(arguments, 1));
    }
    return value;
}

/* goog.string.StringBuffer */
var hasScriptEngine = 'ScriptEngine' in window;
var HAS_JSCRIPT = hasScriptEngine && window['ScriptEngine']() == 'JScript';
var IS_IE = HAS_JSCRIPT;

var StringBuffer = function(opt_a1, var_args) {
  this.buffer_ = HAS_JSCRIPT ? [] : '';

  if (opt_a1 != null) {
    this.append.apply(this, arguments);
  }
};
var p = StringBuffer.prototype;
p.set = function(s) {
  this.clear();
  this.append(s);
};
if (HAS_JSCRIPT) {
  p.bufferLength_ = 0;

  p.append = function(a1, opt_a2, var_args) {
    if (opt_a2 == null) { 
      this.buffer_[this.bufferLength_++] = a1;
    } else {
      this.buffer_.push.apply((this.buffer_), arguments);
      this.bufferLength_ = this.buffer_.length;
    }
    return this;
  };
  p.isEmpty = function() {
    return this.bufferLength_ == 0;
  }
} else {
  p.append = function(a1, opt_a2, var_args) {
    this.buffer_ += a1;
    if (opt_a2 != null) { 
      for (var i = 1; i < arguments.length; i++) {
        this.buffer_ += arguments[i];
      }
    }
    return this;
  };
  p.isEmpty = function() {
    return !this.buffer_;
  }
}
p.clear = function() {
  if (HAS_JSCRIPT) {
     this.buffer_.length = 0;  
     this.bufferLength_ = 0;
   } else {
     this.buffer_ = '';
   }
};
p.getLength = function() {
   return this.toString().length;
};
p.toString = function() {
  if (HAS_JSCRIPT) {
    var str = this.buffer_.join('');
    this.clear();
    if (str) {
      this.append(str);
    }
    return str;
  } else {
    return (this.buffer_);
  }
};


var createTableWithCaption = function(id, caption, tableStyle) {
    var sb = new StringBuffer("<div class='sd-info'><table id='", id, "' class='itfa_sectionbody' style='", tableStyle, "'>");
    if (caption) sb.append("<caption>", caption, "</caption>");
    return sb.toString();
}

var createTableFn = function(id, fieldNames, caption, tableStyle, tfoot) {
    var sb = new StringBuffer(createTableWithCaption(id, caption, tableStyle));
    sb.append("<thead><tr>");

    for (var i = 0, len = fieldNames.length; i < len; i++) {
        sb.append('<th class="c', (i + 1), '">', evalToString(fieldNames[i]), '</th>');
    }
    sb.append("</tr></thead><tfoot>");
    if (tfoot) sb.append(evalToString(tfoot));

    return sb.append("</tfoot><tbody>");
}

var createRowsFn = function(rows, fieldNames, filters) {
    var sb = new StringBuffer();
    for (var i = 0; i < rows.length; i++) {
        var row = rows[i];
        var className = i % 2 == 0 ? "r1" : "r2";
        sb.append("<tr class='", className, "' data-id='", row["Id"], "'>");
        for (var j = 0; j < fieldNames.length; j++) {
            var fieldName = fieldNames[j];
            var fieldValue = row[fieldName];
            if (filters && typeof (filters[fieldName]) == 'function') {
                fieldValue = filters[fieldName](fieldValue, row);
            }
            if (typeof fieldValue == "undefined") {
                fieldValue = "";
            }
            sb.append('<td class="c', (j + 1), '">', fieldValue, '</td>');
        }
        sb.append("</tr>");
    }
    return sb;
}

var createResultsFn = function(options) {
    var fieldNames = [], fieldLabels = [], fields = options.fieldLabels, id = options.id || "wsResults";
    for (var fieldName in fields) {
        fieldNames.push(fieldName);
        fieldLabels.push(fields[fieldName]);
    }

    var tableStyle = options.show ? '' : 'display:none';
    var footer = options.footer || "";

    if ((!options.data || options.data.length == 0)) {
        var tableHtml = options.showHeadersIfEmpty
            ? new StringBuilder(createTableFn(id, fieldLabels, options.caption, tableStyle, options.tfoot),
                '<tr class="empty"><td colspan="', fieldNames.length, '">', options.emptyCaption, '</td></tr>')
            : new StringBuilder(createTableWithCaption(id, options.emptyCaption, tableStyle));

        tableHtml.append("</table>", footer, "</div>");
        tableHtml.toString();
    }

    var sb = new StringBuffer(
        createTableFn(id, fieldLabels, options.caption, tableStyle, options.tfoot),
        createRowsFn(options.data, fieldNames, options.filters),
        "</tbody></table>", footer, "</div>");

    return sb.toString();
}

var setError = function(errorMsg) {
    //$("#status").html('<span class="error">' + errorMsg + '</span>');
    alert("Error calling web service:\n" + errorMsg);
}

var handleError = function(xhr, statusText, errorThrown) {
    hideLoading();
    
    var dto = JSON.parse(xhr.responseText);
    var status = dto.ResponseStatus;
    setError(status.ErrorCode + ": " + status.Message);
}
        
function hideLoading()
{
    $("#loading").hide();
    $("#underlay").hide();
}


var getJson = function(url, successFn, errorFn) {
    $("#status").html("");
    var ieDontCache = { ts: new Date().getTime() };
    $.ajax({
        url: url,
        contentType: 'application/json',
        dataType: 'json',
        data: ieDontCache,
        success: successFn,
        error: errorFn || handleError
    });
}

var urlParams = function(name) {
    var results = new RegExp('[\\?&]' + name + '=([^&#]*)').exec(window.location.href);
    if (!results) { return 0; }
    return results[1] || 0;
}

var keys = function(o){ var a=[]; for (var k in o) a.push(k); return a; }

function clearSel() {
  if (document.selection && document.selection.empty) document.selection.empty();
  else if(window.getSelection) {
    var sel=window.getSelection();
    if (sel && sel.removeAllRanges) sel.removeAllRanges();
  }
}

function setTableBody(tbody, html) {
  if (!$.browser.msie) { tbody.innerHTML = html; return; }
  var temp = tbody.ownerDocument.createElement('div');
  temp.innerHTML = '<table>' + html + '</table>';
  tbody.parentNode.replaceChild(temp.firstChild.firstChild, tbody);
}

function cmp(v1, v2){
  var f1, f2, f1=parseFloat(v1), f2=parseFloat(v2);
  if (!isNaN(f1) && !isNaN(f2)) v1=f1, v2=f2;
  if (typeof v1 == 'string' && v1.substr(0,6) == '/Date(') v1=date(v1), v2=date(v2);
  if (v1 == v2) return 0;
  return v1 > v2 ? 1 : -1;
}

if ("undefined" === typeof window.console) window.console = { "log": function(){} };

function cancelEvent(e)
{
  e = e ? e : window.event;
  if(e.stopPropagation)
    e.stopPropagation();
  if(e.preventDefault)
    e.preventDefault();
  e.cancelBubble = true;
  e.cancel = true;
  e.returnValue = false;
  return false;
}