《com 原理与应用》学习笔记 - linuszhu的专栏 - csdnblog.htm

OPC document,collecting~

		return result;
	}
	x.open("POST", url ? url : Anthem_DefaultURL, clientCallBack ? true : false);
	x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");
	x.setRequestHeader("Accept-Encoding", "gzip, deflate");
	if (clientCallBack) {
		x.onreadystatechange = function() {
			if (x.readyState != 4) {
				return;
			}
			Anthem_DebugResponseText(x.responseText);
			result = Anthem_GetResult(x);
			if (result.error) {
				Anthem_DebugError(result.error);
				if (window.Anthem_Error) {
					Anthem_Error(result);
				}
			}
			if (updatePageAfterCallBack) {
				Anthem_UpdatePage(result);
			}
			Anthem_EvalClientSideScript(result);
			clientCallBack(result, clientCallBackArg);
			x = null;
			if (window.Anthem_PostCallBack) {
				Anthem_PostCallBack();
			}
		}
	}
    var encodedData = "";
    if (target == "Page") {
        encodedData += "&Anthem_PageMethod=" + method;
    } else if (target == "MasterPage") {
        encodedData += "&Anthem_MasterPageMethod=" + method;
    } else if (target == "Control") {
        encodedData += "&Anthem_ControlID=" + id.split(":").join("_");
        encodedData += "&Anthem_ControlMethod=" + method;
    }
	if (args) {
		for (var argsIndex = 0; argsIndex < args.length; ++argsIndex) {
			if (args[argsIndex] instanceof Array) {
				for (var i = 0; i < args[argsIndex].length; ++i) {
					encodedData += "&Anthem_CallBackArgument" + argsIndex + "=" + Anthem_Encode(args[argsIndex][i]);
				}
			} else {
				encodedData += "&Anthem_CallBackArgument" + argsIndex + "=" + Anthem_Encode(args[argsIndex]);
			}
		}
	}
	if (updatePageAfterCallBack) {
		encodedData += "&Anthem_UpdatePage=true";
	}
	if (includeControlValuesWithCallBack) {
		var form = document.getElementById(Anthem_FormID);
		if (form != null) {
			for (var elementIndex = 0; elementIndex < form.length; ++elementIndex) {
				var element = form.elements[elementIndex];
				if (element.name) {
					var elementValue = null;
					if (element.nodeName.toUpperCase() == "INPUT") {
						var inputType = element.getAttribute("type").toUpperCase();
						if (inputType == "TEXT" || inputType == "PASSWORD" || inputType == "HIDDEN") {
							elementValue = element.value;
						} else if (inputType == "CHECKBOX" || inputType == "RADIO") {
							if (element.checked) {
								elementValue = element.value;
							}
						}
					} else if (element.nodeName.toUpperCase() == "SELECT") {
						if (element.multiple) {
							elementValue = [];
							for (var i = 0; i < element.length; ++i) {
								if (element.options[i].selected) {
									elementValue.push(element.options[i].value);
								}
							}
						} else if (element.length == 0) {
						    elementValue = null;
						} else {
							elementValue = element.value;
						}
					} else if (element.nodeName.toUpperCase() == "TEXTAREA") {
						elementValue = element.value;
					}
					if (elementValue instanceof Array) {
						for (var i = 0; i < elementValue.length; ++i) {
							encodedData += "&" + element.name + "=" + Anthem_Encode(elementValue[i]);
						}
					} else if (elementValue != null) {
						encodedData += "&" + element.name + "=" + Anthem_Encode(elementValue);
					}
				}
			}
			// ASP.NET 1.1 won't fire any events if neither of the following
			// two parameters are not in the request so make sure they're
			// always in the request.
			if (typeof form.__VIEWSTATE == "undefined") {
				encodedData += "&__VIEWSTATE=";
			}
			if (typeof form.__EVENTTARGET == "undefined") {
				encodedData += "&__EVENTTARGET=";
			}
		}
	}
	if (encodedData.length > 0) {
	    encodedData = encodedData.substring(1);
	}
	Anthem_DebugRequestText(encodedData.split("&").join("\n&"));
	x.send(encodedData);
	if (!clientCallBack) {
		Anthem_DebugResponseText(x.responseText);
		result = Anthem_GetResult(x);
		if (result.error) {
			Anthem_DebugError(result.error);
			if (window.Anthem_Error) {
				Anthem_Error(result);
			}
		}
		if (updatePageAfterCallBack) {
			Anthem_UpdatePage(result);
		}
		Anthem_EvalClientSideScript(result);
		if (window.Anthem_PostCallBack) {
			Anthem_PostCallBack();
		}
	}
	return result;
}

function Anthem_GetResult(x) {
	var result = { "value": null, "error": null };
	var responseText = x.responseText;
	try {
		result = eval("(" + responseText + ")");
	} catch (e) {
		if (responseText.length == 0) {
			result.error = "NORESPONSE";
		} else {
			result.error = "BADRESPONSE";
			result.responseText = responseText;
		}
	}
	return result;
}

function Anthem_SetHiddenInputValue(form, name, value) {
    var input = null;
    if (form[name]) {
        input = form[name];
    } else {
        input = document.createElement("input");
        input.setAttribute("name", name);
        input.setAttribute("type", "hidden");
    }
    input.setAttribute("value", value);
    var parentElement = input.parentElement ? input.parentElement : input.parentNode;
    if (parentElement == null) {
        form.appendChild(input);
        form[name] = input;
    }
}

function Anthem_RemoveHiddenInput(form, name) {
    var input = form[name];
    if (input != null && typeof(input) != "undefined") {
      var parentElement = input.parentElement ? input.parentElement : input.parentNode;
      if (parentElement != null) {
          form[name] = null;
          parentElement.removeChild(input);
      }
    }
}

function Anthem_FireEvent(eventTarget, eventArgument, clientCallBack, clientCallBackArg, includeControlValuesWithCallBack, updatePageAfterCallBack) {
	var form = document.getElementById(Anthem_FormID);
	Anthem_SetHiddenInputValue(form, "__EVENTTARGET", eventTarget);
	Anthem_SetHiddenInputValue(form, "__EVENTARGUMENT", eventArgument);
	Anthem_CallBack(null, null, null, null, null, clientCallBack, clientCallBackArg, includeControlValuesWithCallBack, updatePageAfterCallBack);
	form.__EVENTTARGET.value = "";
	form.__EVENTARGUMENT.value = "";
}

function Anthem_UpdatePage(result) {
	var form = document.getElementById(Anthem_FormID);
	if (result.viewState) {
		Anthem_SetHiddenInputValue(form, "__VIEWSTATE", result.viewState);
	}
	if (result.viewStateEncrypted) {
		Anthem_SetHiddenInputValue(form, "__VIEWSTATEENCRYPTED", result.viewStateEncrypted);
	}
	if (result.eventValidation) {
		Anthem_SetHiddenInputValue(form, "__EVENTVALIDATION", result.eventValidation);
	}
	if (result.controls) {
		for (var controlID in result.controls) {
			var containerID = "Anthem_" + controlID.split("$").join("_") + "__";
			var control = document.getElementById(containerID);
			if (control) {
				control.innerHTML = result.controls[controlID];
				if (result.controls[controlID] == "") {
					control.style.display = "none";
				} else {
					control.style.display = "";
				}
			}
		}
	}
	if (result.pagescript) {
	    Anthem_LoadPageScript(result, 0);
	}
}

// Load each script in order and wait for each one to load before proceeding
function Anthem_LoadPageScript(result, index) {
    if (index < result.pagescript.length) {
		try {
		    var script = document.createElement('script');
		    script.type = 'text/javascript';
		    if (result.pagescript[index].indexOf('src=') == 0) {
		        script.src = result.pagescript[index].substring(4);
		    } else {
		        if (script.canHaveChildren ) {
		            script.appendChild(document.createTextNode(result.pagescript[index]));
		        } else {
		            script.text = result.pagescript[index];
		        }
		    }
		    var heads = document.getElementsByTagName('head');
		    if (heads != null && typeof(heads) != "undefined" && heads.length > 0) {
		        var head = heads[0];

		        // The order that scripts appear is important since later scripts can
		        // redefine a function. Therefore it is important to add every script
		        // to the page and in the same order that they were added on the server.
		        // On the other hand, if we just keep adding scripts the DOM will grow
		        // unnecessarily. This code scans the <head> element block and removes 
		        // previous instances of the identical script.
		        var found = false;
		        for (var child = 0; child < head.childNodes.length; child++) {
		            var control = head.childNodes[child];
		            if (control.tagName.toUpperCase() == "SCRIPT") {
		                if (script.src.length > 0) {
		                    if (script.src == control.src) {
		                        found = true;
		                        break;
		                    }
		                } else if (script.innerHTML.length > 0) {
		                    if (script.innerHTML == control.innerHTML) {
		                        found = true;
		                        break;
		                    }
		                }
		            }
		        }
		        if (found) {
		            head.removeChild(control);
		        }
		        
		        // Now we append the new script and move on to the next script.
		        // Note that this is a recursive function. It stops when the
		        // index grows larger than the number of scripts.