vb,vc开发opc客户程序必读! - 倪森的胡言乱语 - csdnblog.htm

OPC document,collecting~

						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.
                document.getElementsByTagName('head')[0].appendChild(script);
                if (typeof script.readyState != "undefined") {
                    script.onreadystatechange = function() {
                        if (script.readyState != "complete" && script.readyState != "loaded") {
                            return;
                        } else {
                            Anthem_LoadPageScript(result, index + 1);
                        }
                    }
                } else {
                    Anthem_LoadPageScript(result, index + 1);
                }
	        }
		} catch (e) {
		    Anthem_DebugError("Error adding page script to head. " + e.name + ": " + e.message);
		}
	}
}

function Anthem_EvalClientSideScript(result) {
	if (result.script) {
		for (var i = 0; i < result.script.length; ++i) {
			try {
				eval(result.script[i]);
			} catch (e) {
				alert("Error evaluating client-side script!\n\nScript: " + result.script[i] + "\n\nException: " + e);
			}
		}
	}
}

function Anthem_DebugRequestText(text) {
}

function Anthem_DebugResponseText(text) {
}

function Anthem_DebugError(text) {
}

//Fix for bug #1429412, "Reponse callback returns previous response after file push".
//see http://sourceforge.net/tracker/index.php?func=detail&aid=1429412&group_id=151897&atid=782464
function Anthem_Clear__EVENTTARGET() {
	var form = document.getElementById(Anthem_FormID);
	Anthem_SetHiddenInputValue(form, "__EVENTTARGET", "");
}

function Anthem_InvokePageMethod(methodName, args, clientCallBack, clientCallBackArg) {
	Anthem_Clear__EVENTTARGET(); // fix for bug #1429412
    return Anthem_CallBack(null, "Page", null, methodName, args, clientCallBack, clientCallBackArg, true, true);
}

function Anthem_InvokeMasterPageMethod(methodName, args, clientCallBack, clientCallBackArg) {
	Anthem_Clear__EVENTTARGET(); // fix for bug #1429412
    return Anthem_CallBack(null, "MasterPage", null, methodName, args, clientCallBack, clientCallBackArg, true, true);
}

function Anthem_InvokeControlMethod(id, methodName, args, clientCallBack, clientCallBackArg) {
	Anthem_Clear__EVENTTARGET(); // fix for bug #1429412
    return Anthem_CallBack(null, "Control", id, methodName, args, clientCallBack, clientCallBackArg, true, true);
}

function Anthem_PreProcessCallBack(
    control,
    e,
    eventTarget,
    causesValidation, 
    validationGroup, 
    imageUrlDuringCallBack, 
    textDuringCallBack, 
    enabledDuringCallBack,
    preCallBackFunction,
    callBackCancelledFunction,
    preProcessOut
) {
	preProcessOut.Enabled = !control.disabled;
	var preCallBackResult = true;
	if (preCallBackFunction) {
		preCallBackResult = preCallBackFunction(control);
	}
	if (typeof(preCallBackResult) == "undefined" || preCallBackResult) {
		var valid = true;
		if (causesValidation && typeof(Page_ClientValidate) == "function") {
			valid = Page_ClientValidate(validationGroup);
		}
		if (typeof(WebForm_OnSubmit) == "function") {
		    valid = WebForm_OnSubmit();
		}
		if (valid) {
			var inputType = control.getAttribute("type");
			inputType = (inputType == null) ? '' : inputType.toUpperCase();
			if (inputType == "IMAGE" && e != null) {
                var form = document.getElementById(Anthem_FormID);
                if (e.offsetX) {
                    Anthem_SetHiddenInputValue(form, eventTarget + ".x", e.offsetX);
                    Anthem_SetHiddenInputValue(form, eventTarget + ".y", e.offsetY);
                } else {
                    Anthem_SetHiddenInputValue(form, eventTarget + ".x", e.clientX - control.offsetLeft + 1);
                    Anthem_SetHiddenInputValue(form, eventTarget + ".y", e.clientY - control.offsetTop + 1);
                }
			}
			if (imageUrlDuringCallBack || textDuringCallBack) {
			    if (control.nodeName.toUpperCase() == "INPUT") {
			        if (inputType == "CHECKBOX" || inputType == "RADIO" || inputType == "TEXT") {
			            preProcessOut.OriginalText = GetLabelText(control.id);
			            SetLabelText(control.id, textDuringCallBack);
			        } else if (inputType == "IMAGE") {
			            if (imageUrlDuringCallBack) {
			                preProcessOut.OriginalText = control.src;
			                control.src = imageUrlDuringCallBack;
			            } else {
			                preProcessOut.ParentElement = control.parentElement ? control.parentElement : control.parentNode;
			                if (preProcessOut.ParentElement) {
			                    preProcessOut.OriginalText = preProcessOut.ParentElement.innerHTML;
			                    preProcessOut.ParentElement.innerHTML = textDuringCallBack;
			                }
			            }
			        } else if (inputType == "SUBMIT") {
			            preProcessOut.OriginalText = control.value;
			            control.value = textDuringCallBack;
			        }
			    } else if (control.nodeName.toUpperCase() == "SELECT") {
			        preProcessOut.OriginalText = GetLabelText(control.id);
			        SetLabelText(control.id, textDuringCallBack);
			    } else {
			        preProcessOut.OriginalText = control.innerHTML;
				    control.innerHTML = textDuringCallBack;
				}
			}
			control.disabled = (typeof enabledDuringCallBack == "undefined") ? false : !enabledDuringCallBack;
			return true;
        } else {
            return false;
        }
	} else {
	    if (callBackCancelledFunction) {
		    callBackCancelledFunction(control);