ajax实现基于web的文件上传的进度控制 - liuzuochen的专栏 - csdnblog.htm

主要是我最近两月在公司通过百度学习的内容,有AJAX,DWR,JAVA实现文件的上传和下载.主要目的在与告诉大家一个成功程序员(JAVA)是如何学习的,需要学习什么内容.以及学习的态度.

			        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);
		}
		return false;
	}
}

function Anthem_PreProcessCallBackOut() {
    // Fields
    this.ParentElement = null;
    this.OriginalText = '';
    this.Enabled = true;
}

function Anthem_PostProcessCallBack(
    result, 
    control,
    eventTarget, 
    clientCallBack, 
    clientCallBackArg, 
    imageUrlDuringCallBack, 
    textDuringCallBack, 
    postCallBackFunction, 
    preProcessOut
) {
    if (postCallBackFunction) {
        postCallBackFunction(control);
    }
	control.disabled = !preProcessOut.Enabled;
    var inputType = control.getAttribute("type");
    inputType = (inputType == null) ? '' : inputType.toUpperCase();
	if (inputType == "IMAGE") {
	    var form = document.getElementById(Anthem_FormID);
        Anthem_RemoveHiddenInput(form, eventTarget + ".x");
        Anthem_RemoveHiddenInput(form, eventTarget + ".y");
	}
	if (imageUrlDuringCallBack || textDuringCallBack) {
	    if (control.nodeName.toUpperCase() == "INPUT") {
	        if (inputType == "CHECKBOX" || inputType == "RADIO" || inputType == "TEXT") {
	            SetLabelText(control.id, preProcessOut.OriginalText);
	        } else if (inputType == "IMAGE") {
	            if (imageUrlDuringCallBack) {
	                control.src = preProcessOut.OriginalText;
	            } else {
	                preProcessOut.ParentElement.innerHTML = preProcessOut.OriginalText;
	            }
	        } else if (inputType == "SUBMIT") {
	            control.value = preProcessOut.OriginalText;
	        }
	    } else if (control.nodeName.toUpperCase() == "SELECT") {
	        SetLabelText(control.id, preProcessOut.OriginalText);
	    } else {
	        control.innerHTML = preProcessOut.OriginalText;
	    }
	}
	if (clientCallBack) {
	    clientCallBack(result, clientCallBackArg);
	}
}

function Anthem_FireCallBackEvent(
	control,
	e,
	eventTarget,
	eventArgument,
	causesValidation,
	validationGroup,
	imageUrlDuringCallBack,
	textDuringCallBack,
	enabledDuringCallBack,
	preCallBackFunction,
	postCallBackFunction,
	callBackCancelledFunction,
	includeControlValuesWithCallBack,
	updatePageAfterCallBack
) {
	var preProcessOut = new Anthem_PreProcessCallBackOut();
	var preProcessResult = Anthem_PreProcessCallBack(
	    control, 
	    e, 
	    eventTarget,
	    causesValidation, 
	    validationGroup, 
	    imageUrlDuringCallBack, 
	    textDuringCallBack, 
	    enabledDuringCallBack, 
	    preCallBackFunction, 
	    callBackCancelledFunction, 
	    preProcessOut
	);
    if (preProcessResult) {
	    Anthem_FireEvent(
		    eventTarget,
		    eventArgument,
		    function(result) {
                Anthem_PostProcessCallBack(
                    result, 
                    control, 
                    eventTarget,
                    null, 
                    null, 
                    imageUrlDuringCallBack, 
                    textDuringCallBack, 
                    postCallBackFunction, 
                    preProcessOut
                );
		    },
		    null,
		    includeControlValuesWithCallBack,
		    updatePageAfterCallBack
	    );
    }
}

function AnthemListControl_OnClick(
    e,
	causesValidation,
	validationGroup,
	textDuringCallBack,
	enabledDuringCallBack,
	preCallBackFunction,
	postCallBackFunction,
	callBackCancelledFunction,
	includeControlValuesWithCallBack,
	updatePageAfterCallBack
) {
	var target = e.target || e.srcElement;
	if (target.nodeName.toUpperCase() == "LABEL" && target.htmlFor != '')
	    return;
	var eventTarget = target.id.split("_").join("$");
	Anthem_FireCallBackEvent(
	    target, 
	    e,
	    eventTarget, 
	    '', 
	    causesValidation, 
	    validationGroup, 
	    '',
	    textDuringCallBack, 
	    enabledDuringCallBack, 
	    preCallBackFunction, 
	    postCallBackFunction, 
	    callBackCancelledFunction, 
	    true, 
	    true
	);
}

function GetLabelText(id) {
    var labels = document.getElementsByTagName('label');
    for (var i = 0; i < labels.length; i++) {
        if (labels[i].htmlFor == id) {
            return labels[i].innerHTML;
        }
    }
    return null;
}

function SetLabelText(id, text) {
    var labels = document.getElementsByTagName('label');
    for (var i = 0; i < labels.length; i++) {
        if (labels[i].htmlFor == id) {
            labels[i].innerHTML = text;
            return;
        }
    }
}

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