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https://github.com/e107inc/e107.git
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new module creation
This commit is contained in:
mcfly
250
e107_files/e_ajax.js
Normal file
250
e107_files/e_ajax.js
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@@ -0,0 +1,250 @@
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if (window.ActiveXObject && !window.XMLHttpRequest) {
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window.XMLHttpRequest = function() {
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return new ActiveXObject((navigator.userAgent.toLowerCase().indexOf('msie 5') != -1) ? 'Microsoft.XMLHTTP' : 'Msxml2.XMLHTTP');
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};
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}
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// Gecko support
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/* ;-) */
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// Opera support
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if (window.opera && !window.XMLHttpRequest) {
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window.XMLHttpRequest = function() {
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this.readyState = 0; // 0=uninitialized,1=loading,2=loaded,3=interactive,4=complete
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this.status = 0; // HTTP status codes
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this.statusText = '';
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this._headers = [];
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this._aborted = false;
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this._async = true;
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this.abort = function() {
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this._aborted = true;
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};
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this.getAllResponseHeaders = function() {
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return this.getAllResponseHeader('*');
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};
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this.getAllResponseHeader = function(header) {
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var ret = '';
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for (var i = 0; i < this._headers.length; i++) {
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if (header == '*' || this._headers[i].h == header) {
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ret += this._headers[i].h + ': ' + this._headers[i].v + '\n';
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}
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}
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return ret;
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};
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this.setRequestHeader = function(header, value) {
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this._headers[this._headers.length] = {h:header, v:value};
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};
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this.open = function(method, url, async, user, password) {
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this.method = method;
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this.url = url;
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this._async = true;
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this._aborted = false;
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if (arguments.length >= 3) {
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this._async = async;
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}
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if (arguments.length > 3) {
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// user/password support requires a custom Authenticator class
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opera.postError('XMLHttpRequest.open() - user/password not supported');
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}
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this._headers = [];
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this.readyState = 1;
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if (this.onreadystatechange) {
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this.onreadystatechange();
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}
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};
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this.send = function(data) {
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if (!navigator.javaEnabled()) {
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alert("XMLHttpRequest.send() - Java must be installed and enabled.");
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return;
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}
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if (this._async) {
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setTimeout(this._sendasync, 0, this, data);
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// this is not really asynchronous and won't execute until the current
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// execution context ends
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} else {
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this._sendsync(data);
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}
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}
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this._sendasync = function(req, data) {
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if (!req._aborted) {
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req._sendsync(data);
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}
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};
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this._sendsync = function(data) {
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this.readyState = 2;
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if (this.onreadystatechange) {
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this.onreadystatechange();
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}
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// open connection
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var url = new java.net.URL(new java.net.URL(window.location.href), this.url);
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var conn = url.openConnection();
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for (var i = 0; i < this._headers.length; i++) {
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conn.setRequestProperty(this._headers[i].h, this._headers[i].v);
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}
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this._headers = [];
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if (this.method == 'POST') {
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// POST data
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conn.setDoOutput(true);
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var wr = new java.io.OutputStreamWriter(conn.getOutputStream());
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wr.write(data);
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wr.flush();
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wr.close();
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}
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// read response headers
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// NOTE: the getHeaderField() methods always return nulls for me :(
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var gotContentEncoding = false;
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var gotContentLength = false;
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var gotContentType = false;
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var gotDate = false;
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var gotExpiration = false;
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var gotLastModified = false;
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for (var i = 0; ; i++) {
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var hdrName = conn.getHeaderFieldKey(i);
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var hdrValue = conn.getHeaderField(i);
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if (hdrName == null && hdrValue == null) {
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break;
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}
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if (hdrName != null) {
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this._headers[this._headers.length] = {h:hdrName, v:hdrValue};
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switch (hdrName.toLowerCase()) {
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case 'content-encoding': gotContentEncoding = true; break;
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case 'content-length' : gotContentLength = true; break;
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case 'content-type' : gotContentType = true; break;
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case 'date' : gotDate = true; break;
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case 'expires' : gotExpiration = true; break;
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case 'last-modified' : gotLastModified = true; break;
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}
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}
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}
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// try to fill in any missing header information
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var val;
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val = conn.getContentEncoding();
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if (val != null && !gotContentEncoding) this._headers[this._headers.length] = {h:'Content-encoding', v:val};
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val = conn.getContentLength();
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if (val != -1 && !gotContentLength) this._headers[this._headers.length] = {h:'Content-length', v:val};
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val = conn.getContentType();
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if (val != null && !gotContentType) this._headers[this._headers.length] = {h:'Content-type', v:val};
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val = conn.getDate();
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if (val != 0 && !gotDate) this._headers[this._headers.length] = {h:'Date', v:(new Date(val)).toUTCString()};
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val = conn.getExpiration();
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if (val != 0 && !gotExpiration) this._headers[this._headers.length] = {h:'Expires', v:(new Date(val)).toUTCString()};
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val = conn.getLastModified();
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if (val != 0 && !gotLastModified) this._headers[this._headers.length] = {h:'Last-modified', v:(new Date(val)).toUTCString()};
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// read response data
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var reqdata = '';
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var stream = conn.getInputStream();
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if (stream) {
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var reader = new java.io.BufferedReader(new java.io.InputStreamReader(stream));
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var line;
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while ((line = reader.readLine()) != null) {
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if (this.readyState == 2) {
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this.readyState = 3;
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if (this.onreadystatechange) {
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this.onreadystatechange();
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}
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}
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reqdata += line + '\n';
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}
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reader.close();
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this.status = 200;
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this.statusText = 'OK';
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this.responseText = reqdata;
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this.readyState = 4;
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if (this.onreadystatechange) {
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this.onreadystatechange();
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}
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if (this.onload) {
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this.onload();
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}
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} else {
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// error
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this.status = 404;
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this.statusText = 'Not Found';
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this.responseText = '';
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this.readyState = 4;
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if (this.onreadystatechange) {
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this.onreadystatechange();
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}
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if (this.onerror) {
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this.onerror();
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}
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}
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};
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};
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}
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// ActiveXObject emulation
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if (!window.ActiveXObject && window.XMLHttpRequest) {
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window.ActiveXObject = function(type) {
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switch (type.toLowerCase()) {
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case 'microsoft.xmlhttp':
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case 'msxml2.xmlhttp':
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return new XMLHttpRequest();
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}
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return null;
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};
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}
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function sendInfo() {
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var handler = sendInfo.arguments[0];
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var id = sendInfo.arguments[1];
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var req = new XMLHttpRequest();
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if (req) {
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req.onreadystatechange = function() {
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if (req.readyState == 4 && (req.status == 200 || req.status == 304)) {
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document.getElementById(id).innerHTML = req.responseText;
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}
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};
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} else {
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alert("XMLHTTPRequest failed");
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return null;
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}
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if( sendInfo.arguments.length == 2) {
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req.open('GET', handler);
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req.send(null);
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} else {
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var obj = sendInfo.arguments[2];
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var poststr = "ajax_used=1&";
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var tmp;
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var show;
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for(i=0; i < obj.length; i++) {
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tmp = "";
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show = 1;
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switch (obj.elements[i].type) {
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case "text":
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case "textarea":
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case "hidden":
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case "submit":
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case "button":
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case "password":
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tmp = obj.elements[i].value;
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break;
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case "checkbox":
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tmp = obj.elements[i].checked;
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if(tmp) {
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tmp = 1;
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} else {
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show = 0;
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}
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break;
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case "select-one":
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tmp = obj.elements[i].options[obj.elements[i].selectedIndex].value;
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break;
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case "radio":
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tmp = obj.elements[i].checked;
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if(tmp) {
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tmp = obj.elements[i].value;
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} else {
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show = 0;
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}
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break;
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}
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if(show && obj.elements[i].id) {
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tmp = tmp.replace(/&/g, "%26");
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poststr += obj.elements[i].id + '=' + tmp + '&';
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}
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}
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req.open('POST', handler, true);
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req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
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req.setRequestHeader("Content-length", poststr.length);
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req.setRequestHeader("Connection", "close");
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req.send(poststr);
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}
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}
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