Re: GI Support

Joe Walker-3 wrote:

The attached should be part of the next release of DWR
Joe

On 10/29/07, dio <deha.peker@gmail.com> wrote:
>
>
> DWR has any JavaScript utility class to convert JSON to GI's CDF format?
>
> -- Deha Peker
> --
> View this message in context:
> http://www.nabble.com/GI-Support-tf4713348.html#a13472961
> Sent from the DWR - Dev mailing list archive at Nabble.com.
>
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/*
 * Copyright 2005 Joe Walker
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Declare an object to which we can add real functions.
 */
if (dwr == null) { var dwr = {}; }
if (dwr.gi == null) { dwr.gi = {}; }

/**
 * Convert a javascript object into a CDF document with the given jsxid
 * @param data The data that we want to publish in a CDF document
 * @param jsxid The jsxid of the returned document
 */
dwr.gi.toCdfDocument = function(data, jsxid) {
  var cdfstr = dwr.gi._toCdfDocumentString(data, jsxid);
  var cdf = new jsx3.xml.Document();
  cdf.loadXML(cdfstr);
  return cdf;
};

/**
 * Convert a javascript object into a CDF RecordSet
 * @param data The data that we want to publish in a CDF record set
 */
dwr.gi.toRecordSet = function(data) {
  if (data == null) return "";
  if (data instanceof Array) {
    return dwr.gi._convertArray(data, "", 0);
  }
  if (data instanceof Object) {
    return dwr.gi._convertObject(data, "", 0);
  }
  return dwr.gi._convertOther(data, "root", 0);
};

/** @private Convert any Javascript object to a CDF Document string */
dwr.gi._toCdfDocumentString = function(data, jsxid) {
  return "<data jsxid='" + jsxid + "'>\n" + dwr.gi.toRecordSet(data) + "</data>\n";
};

/** @private Convert an array to a JSX string */
dwr.gi._convertArray = function(data, name, depth) {
  var reply = "";
  for (var i = 0; i < data.length; i++) {
    reply += dwr.gi._convertAttributes(data[i], name + i, depth);
  }
  for (var i = 0; i < data.length; i++) {
    reply += dwr.gi._convertElements(data[i], name + i, depth);
  }
  return reply;
};

/** @private Convert an object to a JSX string */
dwr.gi._convertObject = function(data, name, depth) {
  var reply = "";
  for (var element in data) {
    reply += dwr.gi._convertAttributes(data[element], element, depth);
  }
  for (var element in data) {
    reply += dwr.gi._convertElements(data[element], element, depth);
  }
  return reply;
};

/** @private Convert an object of unknown type to a JSX string */
dwr.gi._convertAttributes = function(data, name, depth) {
  if (typeof data == "function") {
    return ""; // ignore functions
  }
  if (typeof data == "string" || data instanceof String) {
    // TODO: escape the string
    return " " + name + "='" + data + "'";
  }
  if (typeof data == "object") {
    if (data instanceof Date) {
      return " " + name + "='" + data.toUTCString() + "'";
    }
    return "";
  }
  return " " + name + "='" + data + "'";
};

/** @private Convert an object of unknown type to a JSX string */
dwr.gi._convertElements = function(data, name, depth) {
  var reply;
  if (data == null) {
    return ""; // don't create an empty element for null objects
  }
  if (typeof data == "function") {
    return ""; // ignore functions
  }
  if (typeof data == "object") {
    if (data instanceof Date) {
      return "";
    }
    if (data instanceof Array) {
      reply = dwr.gi._indent(depth) + "<record index='0' jsxid='" + name + "' jsxtext='" + name + "' >\n";
      reply += dwr.gi._convertArray(data, name + ".", depth + 1);
      reply += dwr.gi._indent(depth) + "</record>\n";
      return reply;
    }
    reply = dwr.gi._indent(depth) + "<record";
    for (var element in data) {
      reply += dwr.gi._convertAttributes(data[element], element, depth + 1);
    }
    reply += ">\n";
    for (var element in data) {
      reply += dwr.gi._convertElements(data[element], element, depth + 1);
    }
    reply += dwr.gi._indent(depth) + "</record>\n";
    return reply;
  }
  return "";
};

/** @private Do we try to keep the generated source looking good? */
dwr.gi._prettyPrint = false;

/** @private Pretty printing */
dwr.gi._indent = function(depth) {
  if (!dwr.gi._prettyPrint) return "";
  for (var i = 0; i < depth; i++) {
      reply += "  ";
  }
  return reply;
};

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