jsclient/webroot/cmisclient.js - chemistry - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You 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.
  */

 /**
  * 	The CMIS javascript client gives access to a CMIS document management system
  *	from client-side java script code.
  *
  */
 CMISClient = function (url) {
 	this.CMIS_SERVICE_URL=url;
 	this.info = this.getRepositoryInfo();
 	this.connected = this.info?true:false;
 }

 CMISClient.NAME_OF_THIS_FILE = "cmisclient.js";

 /** trim helper */
 CMISClient.trim = function(s) {
 	return s.replace(/^\s*/, "").replace(/\s*$/, "");
 }

 /** implements transformation from an xml document to a reasonable js object
 essentially poor mans jquery
 */
 CMISClient.flatten = function(elem, obj) {
 	if (!obj) obj=new Object();
 	var i=0;
 	while (i<elem.childNodes.length) {
 		/* iterate through all the child nodes of the atom structure */
 		var child=elem.childNodes[i];
 		var value="";

 		switch (child.nodeType) {
 			/* found an element */
 			case Node.ELEMENT_NODE:
 				if (child.attributes.length==0 && child.childNodes.length==1 && child.childNodes[0].nodeType==Node.TEXT_NODE && child.childNodes[0].nodeValue) {
 					/* fold simple cdata into a property */
 					obj[child.nodeName]=this.trim(child.childNodes[0].nodeValue);
 				} else {
 					if (!obj[child.nodeName]) {
 						/* proper substructure without same name sibling */
 						obj[child.nodeName]=new Object();
 						this.flatten(child, obj[child.nodeName]);
 					} else {
 						/* ugly same name sibling handling needs fixing */
 						var j=1;
 						while (obj[child.nodeName+"_"+j]) {
 							j++;
 						}
 						obj[child.nodeName+"_"+j]=new Object();
 						CMISClient.flatten(child, obj[child.nodeName+"_"+j]);
 					}
 				}
 				break;

 			case Node.TEXT_NODE:
 				/* cdata in unexpected place */
 				var val=CMISClient.trim(child.nodeValue);
 				if (val) {
 					obj["text"]=CMISClient.trim(child.nodeValue);
 				}

 				break;
 		}
 		i++;
 	}
 	var i=0;
 	if (elem.attributes) {
 		while (i<elem.attributes.length) {
 			/* place attribute values with their names */
 			var child=elem.attributes[i];
 			obj[child.nodeName]=child.nodeValue;
 			i++;
 		}
 	}
 	return (obj);
 }

 /** Processes an Atom entry into a usable js object */
 CMISClient.processEntry = function(node) {
 	var entry=new Object();
 	for (var a in node) {
 		var elem=node[a];
 		if (a.indexOf("link")==0) {
 			entry[elem.rel]=elem.href;
 		} else if (a=="cmis:object") {
 			var props=elem["cmis:properties"];
 			for (var b in props) {
 				var prop=props[b];
 				entry[prop["cmis:name"]]=prop["cmis:value"];
 			}
 		} else {
 			entry[a]=elem;
 		}
 	}

 	entry.author=node.author.name;
 	entry.content=node.content;
 	entry.id=node.id;
 	return (entry);
 }

 /** Gets a folder from via atom url */
 CMISClient.prototype.getFolder = function(url) {

 	if (url=="/" || !url) {
 		url=this.info.collections["rootchildren"];
 	}
 	var htcon=this.httpGet(url);
 	this.lastHttpStatus = htcon.status;
 	if (htcon.status != 200) {
 		return null;
 	}

 	var doc=htcon.responseXML;
 	var flatres=CMISClient.flatten(doc);

 	var feed=flatres.feed;

 	var res=new Object();
 	res.author=feed.author.name;
 	res.id=feed.id;
 	res.title=feed.title;
 	res.updated=feed.updated;

 	res.links=new Object();
 	res.entries=new Object();

 	var linkcount=0;
 	var entrycount=0;

 	for (var a in feed) {
 		var node=feed[a];
 		if (a.indexOf("entry")==0) {
 			res.entries[entrycount++]=CMISClient.processEntry(node);
 		}
 		if (a.indexOf("link")==0) {

 		}
 	}

 	return(res);
 }

 /** This method reads the repository Info */
 CMISClient.prototype.getRepositoryInfo = function() {
 	var htcon=this.httpGet(this.CMIS_SERVICE_URL);
 	this.lastHttpStatus = htcon.status;

 	/* could not connect */
 	if (htcon.status != 200) {
 		return null;
 	}

 	var doc=htcon.responseXML;
 	var flatres=CMISClient.flatten(doc);
 	var res=new Object();

 	var repoinfo=flatres.service.workspace["cmis:repositoryInfo"];

 	res.repositoryId = repoinfo["cmis:repositoryId"];
 	res.repositoryName = repoinfo["cmis:repositoryName"];
 	res.repositoryRelationship = repoinfo["cmis:repositoryRelationship"];
 	res.repositoryDescription = repoinfo["cmis:repositoryDescription"];
 	res.vendorName = repoinfo["cmis:vendorName"];
 	res.productName = repoinfo["cmis:productName"];
 	res.productVersion = repoinfo["cmis:productVersion"];
 	res.rootFolderId= repoinfo["cmis:rootFolderId"];

 	var caps=repoinfo["cmis:capabilities"];
 	res.capabilities = new Object();
 	res.capabilities.multifiling = caps["cmis:capabilityMultifiling"];
 	res.capabilities.unfiling = caps["cmis:capabilityUnfiling"];

 	res.cmisVersionsSupported = repoinfo["cmis:cmisVersionsSupported"];

 	res.collections = new Object();

 	for (var a in flatres.service.workspace) {
 		if (a.indexOf("collection")==0) {
 			var collection=flatres.service.workspace[a];
 			res.collections[collection["cmis:collectionType"]]=collection.href;
 		}
 	}
 	return (res);
 }

 /**
  * Get an XMLHttpRequest in a portable way.
  */
 CMISClient.prototype.getXHR = function () {
 	var xhr=null;

 	if(!xhr) {
 		try {
 			// built-in (firefox, recent Opera versions, etc)
 			xhr=new XMLHttpRequest();
 		} catch (e) {
 			// ignore
 		}
 	}

 	if(!xhr) {
 		try {
 			// IE, newer versions
 			xhr=new ActiveXObject("Msxml2.XMLHTTP");
 		} catch (e) {
 			// ignore
 		}
 	}

 	if(!xhr) {
 		try {
 			// IE, older versions
 			xhr=new ActiveXObject("Microsoft.XMLHTTP");
 		} catch (e) {
 			// ignore
 		}
 	}

 	if(!xhr) {
 		alert("Unable to access XMLHttpRequest object, cmis client will not work!");
 	}

 	return xhr;
 }

 /**
  * HTTP GET XHR Helper.
  * @param {String} url The URL
  * @return the XHR object, use .responseText for the data
  * @type String
  */
 CMISClient.prototype.httpGet = function(url) {
     var httpcon = this.getXHR();
     if (httpcon) {
 		httpcon.open('GET', url, false);
 		httpcon.send(null);
 		return httpcon;
     } else {
 		return null;
     }
 }

 /**
  * Produces a "sort-of-json" string representation of a object.
  * For debugging purposes only.
  * @param {Object} obj The object
  * @param {int} level The indentation level
  * @return The result
  * @type String
  */
 CMISClient.dumpObj = function(obj, level) {
 	var res="";
 	for (var a in obj) {
 		if (typeof(obj[a])!="object") {
 			res+=a+":"+obj[a]+"  ";
 		} else {
 			res+=a+": { ";
 			res+=this.dumpObj(obj[a])+"} ";
 		}
 	}
 	return (res);
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You 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.
	*/

	/**
	* The CMIS javascript client gives access to a CMIS document management system
	* from client-side java script code.
	*
	*/
	CMISClient = function (url) {
	this.CMIS_SERVICE_URL=url;
	this.info = this.getRepositoryInfo();
	this.connected = this.info?true:false;
	}

	CMISClient.NAME_OF_THIS_FILE = "cmisclient.js";

	/** trim helper */
	CMISClient.trim = function(s) {
	return s.replace(/^\s/, "").replace(/\s$/, "");
	}

	/** implements transformation from an xml document to a reasonable js object
	essentially poor mans jquery
	*/
	CMISClient.flatten = function(elem, obj) {
	if (!obj) obj=new Object();
	var i=0;
	while (i<elem.childNodes.length) {
	/* iterate through all the child nodes of the atom structure */
	var child=elem.childNodes[i];
	var value="";

	switch (child.nodeType) {
	/* found an element */
	case Node.ELEMENT_NODE:
	if (child.attributes.length==0 && child.childNodes.length==1 && child.childNodes[0].nodeType==Node.TEXT_NODE && child.childNodes[0].nodeValue) {
	/* fold simple cdata into a property */
	obj[child.nodeName]=this.trim(child.childNodes[0].nodeValue);
	} else {
	if (!obj[child.nodeName]) {
	/* proper substructure without same name sibling */
	obj[child.nodeName]=new Object();
	this.flatten(child, obj[child.nodeName]);
	} else {
	/* ugly same name sibling handling needs fixing */
	var j=1;
	while (obj[child.nodeName+"_"+j]) {
	j++;
	}
	obj[child.nodeName+"_"+j]=new Object();
	CMISClient.flatten(child, obj[child.nodeName+"_"+j]);
	}
	}
	break;

	case Node.TEXT_NODE:
	/* cdata in unexpected place */
	var val=CMISClient.trim(child.nodeValue);
	if (val) {
	obj["text"]=CMISClient.trim(child.nodeValue);
	}

	break;
	}
	i++;
	}
	var i=0;
	if (elem.attributes) {
	while (i<elem.attributes.length) {
	/* place attribute values with their names */
	var child=elem.attributes[i];
	obj[child.nodeName]=child.nodeValue;
	i++;
	}
	}
	return (obj);
	}

	/** Processes an Atom entry into a usable js object */
	CMISClient.processEntry = function(node) {
	var entry=new Object();
	for (var a in node) {
	var elem=node[a];
	if (a.indexOf("link")==0) {
	entry[elem.rel]=elem.href;
	} else if (a=="cmis:object") {
	var props=elem["cmis:properties"];
	for (var b in props) {
	var prop=props[b];
	entry[prop["cmis:name"]]=prop["cmis:value"];
	}
	} else {
	entry[a]=elem;
	}
	}

	entry.author=node.author.name;
	entry.content=node.content;
	entry.id=node.id;
	return (entry);
	}

	/** Gets a folder from via atom url */
	CMISClient.prototype.getFolder = function(url) {

	if (url=="/" \|\| !url) {
	url=this.info.collections["rootchildren"];
	}
	var htcon=this.httpGet(url);
	this.lastHttpStatus = htcon.status;
	if (htcon.status != 200) {
	return null;
	}

	var doc=htcon.responseXML;
	var flatres=CMISClient.flatten(doc);

	var feed=flatres.feed;

	var res=new Object();
	res.author=feed.author.name;
	res.id=feed.id;
	res.title=feed.title;
	res.updated=feed.updated;

	res.links=new Object();
	res.entries=new Object();

	var linkcount=0;
	var entrycount=0;

	for (var a in feed) {
	var node=feed[a];
	if (a.indexOf("entry")==0) {
	res.entries[entrycount++]=CMISClient.processEntry(node);
	}
	if (a.indexOf("link")==0) {

	}
	}

	return(res);
	}

	/** This method reads the repository Info */
	CMISClient.prototype.getRepositoryInfo = function() {
	var htcon=this.httpGet(this.CMIS_SERVICE_URL);
	this.lastHttpStatus = htcon.status;

	/* could not connect */
	if (htcon.status != 200) {
	return null;
	}

	var doc=htcon.responseXML;
	var flatres=CMISClient.flatten(doc);
	var res=new Object();

	var repoinfo=flatres.service.workspace["cmis:repositoryInfo"];

	res.repositoryId = repoinfo["cmis:repositoryId"];
	res.repositoryName = repoinfo["cmis:repositoryName"];
	res.repositoryRelationship = repoinfo["cmis:repositoryRelationship"];
	res.repositoryDescription = repoinfo["cmis:repositoryDescription"];
	res.vendorName = repoinfo["cmis:vendorName"];
	res.productName = repoinfo["cmis:productName"];
	res.productVersion = repoinfo["cmis:productVersion"];
	res.rootFolderId= repoinfo["cmis:rootFolderId"];

	var caps=repoinfo["cmis:capabilities"];
	res.capabilities = new Object();
	res.capabilities.multifiling = caps["cmis:capabilityMultifiling"];
	res.capabilities.unfiling = caps["cmis:capabilityUnfiling"];

	res.cmisVersionsSupported = repoinfo["cmis:cmisVersionsSupported"];

	res.collections = new Object();

	for (var a in flatres.service.workspace) {
	if (a.indexOf("collection")==0) {
	var collection=flatres.service.workspace[a];
	res.collections[collection["cmis:collectionType"]]=collection.href;
	}
	}
	return (res);
	}

	/**
	* Get an XMLHttpRequest in a portable way.
	*/
	CMISClient.prototype.getXHR = function () {
	var xhr=null;

	if(!xhr) {
	try {
	// built-in (firefox, recent Opera versions, etc)
	xhr=new XMLHttpRequest();
	} catch (e) {
	// ignore
	}
	}

	if(!xhr) {
	try {
	// IE, newer versions
	xhr=new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
	// ignore
	}
	}

	if(!xhr) {
	try {
	// IE, older versions
	xhr=new ActiveXObject("Microsoft.XMLHTTP");
	} catch (e) {
	// ignore
	}
	}

	if(!xhr) {
	alert("Unable to access XMLHttpRequest object, cmis client will not work!");
	}

	return xhr;
	}

	/**
	* HTTP GET XHR Helper.
	* @param {String} url The URL
	* @return the XHR object, use .responseText for the data
	* @type String
	*/
	CMISClient.prototype.httpGet = function(url) {
	var httpcon = this.getXHR();
	if (httpcon) {
	httpcon.open('GET', url, false);
	httpcon.send(null);
	return httpcon;
	} else {
	return null;
	}
	}

	/**
	* Produces a "sort-of-json" string representation of a object.
	* For debugging purposes only.
	* @param {Object} obj The object
	* @param {int} level The indentation level
	* @return The result
	* @type String
	*/
	CMISClient.dumpObj = function(obj, level) {
	var res="";
	for (var a in obj) {
	if (typeof(obj[a])!="object") {
	res+=a+":"+obj[a]+" ";
	} else {
	res+=a+": { ";
	res+=this.dumpObj(obj[a])+"} ";
	}
	}
	return (res);
	}