public void makeBatchRequests() {
if (requestQueue.size() > 0) {
List<AjaxRequest> queue = requestQueue;
requestQueue = StrictWeb.jsNewList();
makeRequest(true, queue, null);
}
autoRequest = true;
}
public Object call(
String clazz,
final String method,
Object[] args,
final VoidDelegate<Object> callBack,
final VoidDelegate<Throwable> errorHandler)
throws Throwable {
if (errorHandler != null) errorHandler.voidDelegate(null);
else onError(null);
boolean async = callBack != null;
if (!async || autoRequest) {
List<AjaxRequest> requests = StrictWeb.jsNewList();
requests.add(new AjaxRequest(clazz, method, args, callBack, errorHandler));
return makeRequest(async, requests, errorHandler);
} else {
requestQueue.add(new AjaxRequest(clazz, method, args, callBack, errorHandler));
return null;
}
}
public class Ajax {
public static final String FIELD_MULTISELECT = "field.multiselect";
private static final String MICROSOFT_XMLHTTP = "Microsoft.XMLHTTP";
private static final String EV_ONREADYSTATECHANGE = "onreadystatechange";
public static Ajax helper;
boolean autoRequest = true;
List<AjaxRequest> requestQueue = StrictWeb.jsNewList();
public String getRequestUrl(List<AjaxRequest> requests) {
return "/ajax";
}
// public String getQueryString(List<AjaxRequest> requests) {
// String query = "_rnd="+Math.random();
//
// for(int i=0; i<requests.size(); i++) {
// AjaxRequest r = requests.get(i);
// query += "&" + BEAN_NAME_PARAM+i+"="+r.clazz + "&"+METHOD_NAME_PARAM+i+"="+r.method;
// }
//
// return query;
// }
public String getLoadingImageUrl() {
return null;
}
public XMLHttpRequest getHttpRequest() {
if (StrictWeb.window.XMLHttpRequest != null) {
return new XMLHttpRequest();
}
return (XMLHttpRequest) (Object) new ActiveXObject(MICROSOFT_XMLHTTP);
}
/** this method handles error events. If null is passed - this means reset errors */
public void onError(Throwable exception) {
if (exception == null) return;
Log.error("Ajax call exception: " + exception.getMessage());
if (exception.getStackTrace() != null)
for (StackTraceElement ste : exception.getStackTrace()) {
Log.error(
" at " + ste.getClassName() + "." + ste.getMethodName() + " : " + ste.getLineNumber());
}
if (exception.getCause() != null) {
Log.error("Caused by:");
onError(exception.getCause());
}
}
public void beginBatch() {
autoRequest = false;
}
public void makeBatchRequests() {
if (requestQueue.size() > 0) {
List<AjaxRequest> queue = requestQueue;
requestQueue = StrictWeb.jsNewList();
makeRequest(true, queue, null);
}
autoRequest = true;
}
public Object call(
String clazz,
final String method,
Object[] args,
final VoidDelegate<Object> callBack,
final VoidDelegate<Throwable> errorHandler)
throws Throwable {
if (errorHandler != null) errorHandler.voidDelegate(null);
else onError(null);
boolean async = callBack != null;
if (!async || autoRequest) {
List<AjaxRequest> requests = StrictWeb.jsNewList();
requests.add(new AjaxRequest(clazz, method, args, callBack, errorHandler));
return makeRequest(async, requests, errorHandler);
} else {
requestQueue.add(new AjaxRequest(clazz, method, args, callBack, errorHandler));
return null;
}
}
Object makeRequest(
boolean async, final List<AjaxRequest> requests, final VoidDelegate<Throwable> errorHandler) {
onError(null);
XMLHttpRequest request = getHttpRequest();
// String postXml = "";
//
// for(int i=0; i<requests.size(); i++) {
// AjaxRequest r = requests.get(i);
// if(r.errorHandler != null) r.errorHandler.voidDelegate(null);
// postXml += "&"+XML_DATA_PARAM+i+"="
// + objectToXml(r.args, null).replaceAll("%", "%25").replaceAll("&",
// "%26").replaceAll(";", "%3B").replaceAll("\\+", "%2B");
// }
String postJson = "[";
for (int i = 0; i < requests.size(); i++) {
AjaxRequest r = requests.get(i);
postJson += objectToJson(r.clazz) + "," + objectToJson(r.method) + "," + arrayToJson(r.args);
if (i != requests.size() - 1) postJson += ",";
}
postJson += "]";
final String url = getRequestUrl(requests);
final Node[] eventTargetNodes = new Node[3];
eventTargetDisable(eventTargetNodes);
if (async) {
StrictWeb.setVoidEventCallback(
request,
EV_ONREADYSTATECHANGE,
new VoidDelegate<XMLHttpRequest>() {
public void voidDelegate(XMLHttpRequest request) {
if (request.readyState == 4) {
try {
StrictWeb.setVoidEventCallback(request, EV_ONREADYSTATECHANGE, null);
} catch (Exception e) {
/*StrictWeb.window.alert(e);*/
}
eventTargetEnable(eventTargetNodes);
if (request.status == 200) {
AjaxRequestResult[] results = parseRequestResult(request, url, requests);
for (int i = 0; i < results.length; i++) {
AjaxRequestResult res = results[i];
AjaxRequest req = requests.get(i);
Throwable error = res.getError();
if (error != null) {
throwError(
"Ajax.call(" + req.method + "): server-side exception",
error,
req.errorHandler);
} else {
req.callBack.voidDelegate(res.data);
}
}
} else {
throwError("Error status: " + request.status, null, errorHandler);
}
}
}
});
}
// postXml = getQueryString(requests) + postXml;
request.open("POST", url, async, null, null);
Log.info("POST URL : " + url);
Log.info("POST JSON: " + postJson);
Log.info("POST args:");
Log.info(requests);
setRequestHeaders(request);
request.send(postJson);
if (async) return null;
// doing sync parse
eventTargetEnable(eventTargetNodes);
AjaxRequestResult res = parseRequestResult(request, url, requests)[0];
AjaxRequest req = requests.get(0);
Throwable error = res.getError();
if (error != null) {
throwError("Ajax.call(" + req.method + "): server-side exception", error, req.errorHandler);
}
return res.data;
}
public void setRequestHeaders(XMLHttpRequest request) {
// request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
request.setRequestHeader("Content-type", "application/json");
}
private AjaxRequestResult[] parseRequestResult(
XMLHttpRequest request, String url, List<AjaxRequest> requests) {
long status = request.status;
String responseText = request.responseText;
String statusText = request.statusText;
request = null;
AjaxRequestResult[] result = null;
if (status == 200) {
try {
Object evalResult;
if (responseText.charAt(0) == 'v') {
evalResult = StrictWeb.evalFunction(responseText + "\nreturn o._a;");
} else {
evalResult = StrictWeb.evalFunction("return " + responseText);
}
result = (AjaxRequestResult[]) evalResult;
Log.debug("Ajax result:");
Log.debug(result);
} catch (Throwable e) {
throwError("Ajax.call(" + getMethodsNames(requests) + "): eval error", e, null);
}
} else {
throwError(
"Ajax.call("
+ getMethodsNames(requests)
+ "): http error:\n"
+ "URL: "
+ url
+ "\nCode: "
+ status
+ "\nMessage: "
+ statusText,
null,
null);
}
if (result == null) {
throwError(
"Ajax.call(" + getMethodsNames(requests) + "): result is null: " + responseText,
null,
null);
}
if (result.length != requests.size()) {
throwError(
"Ajax.call("
+ getMethodsNames(requests)
+ "): results count in not equal requests count: "
+ result.length
+ "!="
+ requests.size(),
null,
null);
}
return result;
}
public String getMethodsNames(List<AjaxRequest> requests) {
String methods = "";
for (int i = 0; i < requests.size(); i++) {
AjaxRequest r = requests.get(i);
methods += (i > 0 ? "," : "") + r.method;
}
return methods;
}
public void eventTargetDisable(Node[] eventTargetNodes) {
DOMEvent ev = StrictWeb.globalEvent;
Node el = StrictWeb.swTarget;
if (el == null) {
if (null == ev) return;
el = ev.target;
}
try {
if (el == null) el = ev.srcElement;
if (el == null) el = ev.fromElement;
} catch (Exception e) {
/* NOP */
}
if (el == null || null == el.tagName || el.parentNode == null) return;
// node
eventTargetNodes[0] = el;
// parent
eventTargetNodes[1] = el.parentNode;
// loading
String loadingImgUrl = getLoadingImageUrl();
eventTargetNodes[2] =
(null != loadingImgUrl
? StrictWeb.EL("span")
.styleDisplay("inline-block")
.styleWidth(el.offsetWidth + "px")
.styleHeight(el.offsetHeight + "px")
.styleBackground("center center no-repeat url(" + loadingImgUrl + ")")
: StrictWeb.EL("span").text("loading..."))
.node;
eventTargetNodes[1].insertBefore(eventTargetNodes[2], eventTargetNodes[0]);
eventTargetNodes[1].removeChild(eventTargetNodes[0]);
}
public void eventTargetEnable(Node[] eventTargetNodes) {
if (null == eventTargetNodes || eventTargetNodes.length != 3) return;
eventTargetNodes[1].insertBefore(eventTargetNodes[0], eventTargetNodes[2]);
eventTargetNodes[1].removeChild(eventTargetNodes[2]);
eventTargetNodes[0] = eventTargetNodes[1] = eventTargetNodes[2] = null;
}
void throwError(String shortMsg, Throwable th, VoidDelegate<Throwable> errorHandler) {
if (th == null) th = new JsException(shortMsg);
if (errorHandler != null) {
errorHandler.voidDelegate(th);
} else {
onError(th);
}
}
@NativeCode("{throw th;}")
private static <T> T nativeJsThrow(Object th) {
return null;
}
@MayBeExcluded
public static String objectToJson(Object obj) {
if (StrictWeb.jsTypeOf(obj) == "undefined") return "null";
if (StrictWeb.jsTypeOf(obj) == "string") return '"' + StrictWeb.toJSON((String) obj) + '"';
if (StrictWeb.jsTypeOf(obj) == "boolean") return ((Boolean) obj) ? "1" : "0";
if (StrictWeb.jsTypeOf(obj) == "number") return obj.toString();
if (StrictWeb.jsTypeOf(obj) == "object") {
if (obj == null) return "null";
if (StrictWeb.isEnum(obj)) return obj.toString();
if (StrictWeb.isInstanceOfDate(obj)) return StrictWeb.dateToStringSmart((Date) obj);
if (StrictWeb.isInstanceOfArray(obj)) return arrayToJson((Object[]) obj);
if (StrictWeb.isInstanceOfNode(obj)) {
String json = formToJson((Node) obj);
if (json != null && json.length() > 0 && json.charAt(0) == '{') return "[" + json + "]";
return "{" + json + "}";
}
Map<String, String> map = (Map<String, String>) obj;
String json = "";
for (String key : map.keySet()) {
String val = map.get(key);
if (StrictWeb.jsTypeOf(val) == "function") continue;
if (json.length() > 0) json += ",";
json += objectToJson(key) + ":" + objectToJson(val);
}
return "{" + json + "}";
}
return nativeJsThrow("Unknown object type: " + StrictWeb.jsTypeOf(obj));
}
@MayBeExcluded
public static String arrayToJson(Object[] a) {
if (a == null) return "null";
String json = "";
for (int i = 0; i < a.length; i++) {
Object val = a[i];
if (StrictWeb.jsTypeOf(val) == "function") continue;
if (json.length() > 0) json += ",";
json += objectToJson(val);
}
return "[" + json + "]";
}
@MayBeExcluded
public static String formToJson(Node start) {
if (start.field == DOMBuilder.DISABLED) return "";
String json = "";
boolean asArray = false;
for (Node el : start.childNodes) {
if (el.field == DOMBuilder.DISABLED) continue;
if (((Boolean) (Object) el.id || (Boolean) (Object) el.name)
&& (el.tagName == "INPUT" || el.tagName == "SELECT" || el.tagName == "TEXTAREA")) {
if (el.type == "radio" && !el.checked) continue;
if (json.length() > 0) json += ",";
if (asArray) throw new RuntimeException("Form returned as array, not at map");
json += objectToJson((Boolean) (Object) el.id || (Boolean) (Object) el.name) + ":";
if (el.type == "checkbox") json += el.checked ? "1" : "0";
else json += objectToJson(el.value);
} else if (el.className != null && el.className.indexOf(FIELD_MULTISELECT) >= 0) {
final List<Object> val = new ArrayList<Object>();
NodeBuilder.wrap(el)
.forEachSubchild(
new CommonDelegate<Boolean, Node>() {
public Boolean delegate(Node n) {
if (n.field == DOMBuilder.DISABLED) return false;
if (n.tagName == "INPUT" || n.tagName == "SELECT") {
if (n.type == "checkbox") {
if (n.checked)
val.add((Boolean) (Object) n.id || (Boolean) (Object) n.name);
} else {
val.add((String) n.value);
}
}
return true;
}
});
if (json.length() > 0) json += ",";
if (asArray) nativeJsThrow("Form returned as array, not as map 1");
json += objectToJson(el.field) + ":" + arrayToJson((Object[]) (Object) val);
} else {
String childJson = formToJson(el);
if (childJson != null && childJson.length() > 0) {
if (childJson.charAt(0) == '{') asArray = true;
else if (asArray) nativeJsThrow("Form returned as array, not as map 2");
if (json.length() > 0) json += ",";
json += childJson;
}
}
}
if (start.field != null) {
String bra = asArray ? "[" : "{";
String ket = asArray ? "]" : "}";
if (StrictWeb.jsTypeOf(start.field) == "string") {
return objectToJson(start.field) + ":" + bra + json + ket;
} else return bra + json + ket;
}
return json;
}
@MayBeExcluded
public static String objectToXml(Object obj, String _id) {
String id = (_id != null ? " id=\"" + _id + "\"" : "");
if (StrictWeb.jsTypeOf(obj) == "undefined") return "<null" + id + "/>";
if (StrictWeb.jsTypeOf(obj) == "string")
return "<s" + id + ">" + StrictWeb.toHTML((String) obj) + "</s>";
if (StrictWeb.jsTypeOf(obj) == "boolean")
return ((Boolean) obj) ? "<b" + id + ">1</b>" : "<b" + id + ">0</b>";
if (StrictWeb.jsTypeOf(obj) == "number") return "<n" + id + ">" + obj + "</n>";
if (StrictWeb.jsTypeOf(obj) == "object") {
if (obj == null) return "<null" + id + "/>";
if (StrictWeb.isEnum(obj)) return "<e" + id + ">" + obj.toString() + "</e>";
if (StrictWeb.isInstanceOfDate(obj))
return "<d" + id + ">" + StrictWeb.dateToStringSmart((Date) obj) + "</d>";
if (StrictWeb.isInstanceOfArray(obj)) return arrayToXml((Object[]) obj, id);
if (StrictWeb.isInstanceOfNode(obj)) {
return "<form" + id + ">" + formToXml((Node) obj) + "</form>";
}
Map<String, String> map = (Map<String, String>) obj;
String xml = "<o" + id + ">";
for (String key : map.keySet()) {
String val = map.get(key);
if (StrictWeb.jsTypeOf(val) != "function") xml += objectToXml(val, key);
}
return xml + "</o>";
}
return "<" + StrictWeb.jsTypeOf(obj) + "/>";
}
@MayBeExcluded
public static String formToXml(Node start) {
String xml = "";
if (start.field == DOMBuilder.DISABLED) return xml;
if (start.field != null) {
if (StrictWeb.jsTypeOf(start.field) == "string") {
xml = "<f id=\"" + start.field + "\">";
} else xml = "<f>";
}
for (Node el : start.childNodes) {
if (el.field == DOMBuilder.DISABLED) continue;
if (((Boolean) (Object) el.id || (Boolean) (Object) el.name)
&& (el.tagName == "INPUT" || el.tagName == "SELECT" || el.tagName == "TEXTAREA")) {
if (el.type == "radio" && !el.checked) continue;
xml += "<f id=\"" + ((Boolean) (Object) el.id || (Boolean) (Object) el.name) + "\">";
if (el.type == "checkbox") xml += el.checked ? "1" : "0";
else xml += StrictWeb.toHTML((String) el.value);
xml += "</f>";
} else if (el.className != null && el.className.indexOf(FIELD_MULTISELECT) >= 0) {
final List<Object> val = new ArrayList<Object>();
NodeBuilder.wrap(el)
.forEachSubchild(
new CommonDelegate<Boolean, Node>() {
public Boolean delegate(Node n) {
if (n.field == DOMBuilder.DISABLED) return false;
if (n.tagName == "INPUT" || n.tagName == "SELECT") {
if (n.type == "checkbox") {
if (n.checked)
val.add((Boolean) (Object) n.id || (Boolean) (Object) n.name);
} else {
val.add((String) n.value);
}
}
return true;
}
});
xml +=
"<ms id=\""
+ el.field
+ "\">"
+ (val.size() > 0 ? "<q>" : "")
+ StrictWeb.jsJoinList(val, "</q><q>")
+ (val.size() > 0 ? "</q>" : "")
+ "</ms>";
} else xml += formToXml(el);
}
if (start.field != null) xml += "</f>";
return xml;
}
@MayBeExcluded
public static String arrayToXml(Object[] a, String id) {
String xml = "<a" + id + ">";
for (int i = 0; i < a.length; i++) {
if (StrictWeb.jsTypeOf(a[i]) != "function") xml += objectToXml(a[i], null);
}
return xml + "</a>";
}
/** Use this method to append all Ajax specific classes to StrictWeb compier */
@Native
public static void prepareCompiler(Compiler compiler) throws Exception {
compiler
.addPlugin(new EntityCompilerPlugin())
.addPlugin(new AjaxServiceHelperCompilerPlugin())
// .parseClass(AjaxException.class)
.parseClass(AjaxRequest.class)
.parseClass(AjaxRequestResult.class)
.parseClass(ActiveXObject.class)
.parseClass(Log.class)
.parseClass(XMLHttpRequest.class)
.parseClass(Ajax.class);
}
}