webresource.js

DP代码加解释~~~在网手收集起来的论文解题报告

function WebForm_PostBackOptions(eventTarget, eventArgument, validation, validationGroup, actionUrl, trackFocus, clientSubmit) {
    this.eventTarget = eventTarget;
    this.eventArgument = eventArgument;
    this.validation = validation;
    this.validationGroup = validationGroup;
    this.actionUrl = actionUrl;
    this.trackFocus = trackFocus;
    this.clientSubmit = clientSubmit;
}
function WebForm_DoPostBackWithOptions(options) {
    var validationResult = true;
    if (options.validation) {
        if (typeof(Page_ClientValidate) == 'function') {
            validationResult = Page_ClientValidate(options.validationGroup);
        }
    }
    if (validationResult) {
        if ((typeof(options.actionUrl) != "undefined") && (options.actionUrl != null) && (options.actionUrl.length > 0)) {
            theForm.action = options.actionUrl;
        }
        if (options.trackFocus) {
            var lastFocus = theForm.elements["__LASTFOCUS"];
            if ((typeof(lastFocus) != "undefined") && (lastFocus != null)) {
                if (typeof(document.activeElement) == "undefined") {
                    lastFocus.value = options.eventTarget;
                }
                else {
                    var active = document.activeElement;
                    if ((typeof(active) != "undefined") && (active != null)) {
                        if ((typeof(active.id) != "undefined") && (active.id != null) && (active.id.length > 0)) {
                            lastFocus.value = active.id;
                        }
                        else if (typeof(active.name) != "undefined") {
                            lastFocus.value = active.name;
                        }
                    }
                }
            }
        }
    }
    if (options.clientSubmit) {
        __doPostBack(options.eventTarget, options.eventArgument);
    }
}
var __pendingCallbacks = new Array();
var __synchronousCallBackIndex = -1;
function WebForm_DoCallback(eventTarget, eventArgument, eventCallback, context, errorCallback, useAsync) {
    var postData = __theFormPostData +
                "__CALLBACKID=" + WebForm_EncodeCallback(eventTarget) +
                "&__CALLBACKPARAM=" + WebForm_EncodeCallback(eventArgument);
    if (theForm["__EVENTVALIDATION"]) {
        postData += "&__EVENTVALIDATION=" + WebForm_EncodeCallback(theForm["__EVENTVALIDATION"].value);
    }
    var xmlRequest,e;
    try {
        xmlRequest = new XMLHttpRequest();
    }
    catch(e) {
        try {
            xmlRequest = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch(e) {
        }
    }
    var setRequestHeaderMethodExists = true;
    try {
        setRequestHeaderMethodExists = (xmlRequest && xmlRequest.setRequestHeader);
    }
    catch(e) {}
    var callback = new Object();
    callback.eventCallback = eventCallback;
    callback.context = context;
    callback.errorCallback = errorCallback;
    callback.async = useAsync;
    var callbackIndex = WebForm_FillFirstAvailableSlot(__pendingCallbacks, callback);
    if (!useAsync) {
        if (__synchronousCallBackIndex != -1) {
            __pendingCallbacks[__synchronousCallBackIndex] = null;
        }
        __synchronousCallBackIndex = callbackIndex;
    }
    if (setRequestHeaderMethodExists) {
        xmlRequest.onreadystatechange = WebForm_CallbackComplete;
        callback.xmlRequest = xmlRequest;
        xmlRequest.open("POST", theForm.action, true);
        xmlRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xmlRequest.send(postData);
        return;
    }
    callback.xmlRequest = new Object();
    var callbackFrameID = "__CALLBACKFRAME" + callbackIndex;
    var xmlRequestFrame = document.frames[callbackFrameID];
    if (!xmlRequestFrame) {
        xmlRequestFrame = document.createElement("IFRAME");
        xmlRequestFrame.width = "1";
        xmlRequestFrame.height = "1";
        xmlRequestFrame.frameBorder = "0";
        xmlRequestFrame.id = callbackFrameID;
        xmlRequestFrame.name = callbackFrameID;
        xmlRequestFrame.style.position = "absolute";
        xmlRequestFrame.style.top = "-100px"
        xmlRequestFrame.style.left = "-100px";
        try {
            if (callBackFrameUrl) {
                xmlRequestFrame.src = callBackFrameUrl;
            }
        }
        catch(e) {}
        document.body.appendChild(xmlRequestFrame);
    }
    var interval = window.setInterval(function() {
        xmlRequestFrame = document.frames[callbackFrameID];
        if (xmlRequestFrame && xmlRequestFrame.document) {
            window.clearInterval(interval);
            xmlRequestFrame.document.write("");
            xmlRequestFrame.document.close();
            xmlRequestFrame.document.write('<html><body><form method="post"><input type="hidden" name="__CALLBACKLOADSCRIPT" value="t"></form></body></html>');
            xmlRequestFrame.document.close();
            xmlRequestFrame.document.forms[0].action = theForm.action;
            var count = __theFormPostCollection.length;
            var element;
            for (var i = 0; i < count; i++) {
                element = __theFormPostCollection[i];
                if (element) {
                    var fieldElement = xmlRequestFrame.document.createElement("INPUT");
                    fieldElement.type = "hidden";
                    fieldElement.name = element.name;
                    fieldElement.value = element.value;
                    xmlRequestFrame.document.forms[0].appendChild(fieldElement);
                }
            }
            var callbackIdFieldElement = xmlRequestFrame.document.createElement("INPUT");
            callbackIdFieldElement.type = "hidden";
            callbackIdFieldElement.name = "__CALLBACKID";
            callbackIdFieldElement.value = eventTarget;
            xmlRequestFrame.document.forms[0].appendChild(callbackIdFieldElement);
            var callbackParamFieldElement = xmlRequestFrame.document.createElement("INPUT");
            callbackParamFieldElement.type = "hidden";
            callbackParamFieldElement.name = "__CALLBACKPARAM";
            callbackParamFieldElement.value = eventArgument;
            xmlRequestFrame.document.forms[0].appendChild(callbackParamFieldElement);
            if (theForm["__EVENTVALIDATION"]) {
                var callbackValidationFieldElement = xmlRequestFrame.document.createElement("INPUT");
                callbackValidationFieldElement.type = "hidden";
                callbackValidationFieldElement.name = "__EVENTVALIDATION";
                callbackValidationFieldElement.value = theForm["__EVENTVALIDATION"].value;
                xmlRequestFrame.document.forms[0].appendChild(callbackValidationFieldElement);
            }
            var callbackIndexFieldElement = xmlRequestFrame.document.createElement("INPUT");
            callbackIndexFieldElement.type = "hidden";
            callbackIndexFieldElement.name = "__CALLBACKINDEX";
            callbackIndexFieldElement.value = callbackIndex;
            xmlRequestFrame.document.forms[0].appendChild(callbackIndexFieldElement);
            xmlRequestFrame.document.forms[0].submit();
        }
    }, 10);
}
function WebForm_CallbackComplete() {
    for (i = 0; i < __pendingCallbacks.length; i++) {
        callbackObject = __pendingCallbacks[i];
        if (callbackObject && callbackObject.xmlRequest && (callbackObject.xmlRequest.readyState == 4)) {
            WebForm_ExecuteCallback(callbackObject);
            if (!__pendingCallbacks[i].async) {
                __synchronousCallBackIndex = -1;
            }
            __pendingCallbacks[i] = null;
            var callbackFrameID = "__CALLBACKFRAME" + i;
            var xmlRequestFrame = document.getElementById(callbackFrameID);
            if (xmlRequestFrame) {
                xmlRequestFrame.parentNode.removeChild(xmlRequestFrame);
            }
        }
    }
}
function WebForm_ExecuteCallback(callbackObject) {
    var response = callbackObject.xmlRequest.responseText;
    if (response.charAt(0) == "s") {
        if ((typeof(callbackObject.eventCallback) != "undefined") && (callbackObject.eventCallback != null)) {
            callbackObject.eventCallback(response.substring(1), callbackObject.context);
        }
    }
    else if (response.charAt(0) == "e") {
        if ((typeof(callbackObject.errorCallback) != "undefined") && (callbackObject.errorCallback != null)) {
            callbackObject.errorCallback(response.substring(1), callbackObject.context);
        }
    }
    else {
        var separatorIndex = response.indexOf("|");
        if (separatorIndex != -1) {
            var validationFieldLength = parseInt(response.substring(0, separatorIndex));
            if (!isNaN(validationFieldLength)) {
                var validationField = response.substring(separatorIndex + 1, separatorIndex + validationFieldLength + 1);
                if (validationField != "") {
                    var validationFieldElement = theForm["__EVENTVALIDATION"];
                    if (!validationFieldElement) {
                        validationFieldElement = document.createElement("INPUT");
                        validationFieldElement.type = "hidden";
                        validationFieldElement.name = "__EVENTVALIDATION";
                        theForm.appendChild(validationFieldElement);
                    }
                    validationFieldElement.value = validationField;
                }
                if ((typeof(callbackObject.eventCallback) != "undefined") && (callbackObject.eventCallback != null)) {
                    callbackObject.eventCallback(response.substring(separatorIndex + validationFieldLength + 1), callbackObject.context);
                }
            }
        }
    }
}
function WebForm_FillFirstAvailableSlot(array, element) {
    var i;
    for (i = 0; i < array.length; i++) {
        if (!array[i]) break;
    }
    array[i] = element;
    return i;
}
var __nonMSDOMBrowser = (window.navigator.appName.toLowerCase().indexOf('explorer') == -1);
var __theFormPostData = "";
var __theFormPostCollection = new Array();
function WebForm_InitCallback() {
    var count = theForm.elements.length;
    var element;
    for (var i = 0; i < count; i++) {
        element = theForm.elements[i];
        var tagName = element.tagName.toLowerCase();
        if (tagName == "input") {
            var type = element.type;
            if ((type == "text" || type == "hidden" || type == "password" ||
                ((type == "checkbox" || type == "radio") && element.checked)) &&
                (element.id != "__EVENTVALIDATION")) {
                WebForm_InitCallbackAddField(element.name, element.value);
            }
        }
        else if (tagName == "select") {
            var selectCount = element.options.length;
            for (var j = 0; j < selectCount; j++) {
                var selectChild = element.options[j];
                if (selectChild.selected == true) {
                    WebForm_InitCallbackAddField(element.name, element.value);
                }
            }
        }
        else if (tagName == "textarea") {
            WebForm_InitCallbackAddField(element.name, element.value);
        }
    }
}
function WebForm_InitCallbackAddField(name, value) {
    var nameValue = new Object();
    nameValue.name = name;
    nameValue.value = value;
    __theFormPostCollection[__theFormPostCollection.length] = nameValue;
    __theFormPostData += name + "=" + WebForm_EncodeCallback(value) + "&";
}
function WebForm_EncodeCallback(parameter) {
    if (encodeURIComponent) {
        return encodeURIComponent(parameter);
    }
    else {
        return escape(parameter);
    }
}
var __disabledControlArray = new Array();
function WebForm_ReEnableControls() {
    if (typeof(__enabledControlArray) == 'undefined') {
        return false;
    }
    var disabledIndex = 0;