// 當前模式
var sCurrMode = null;
var bEditMode = null;
// 連接對象
var oLinkField = null;
var sBaseUrl = document.location.protocol + '//' + document.location.host ;

// 瀏覽器版本檢測
var BrowserInfo = new Object() ;
BrowserInfo.MajorVer = navigator.appVersion.match(/MSIE (.)/)[1] ;
BrowserInfo.MinorVer = navigator.appVersion.match(/MSIE .\.(.)/)[1] ;
BrowserInfo.IsIE55OrMore = BrowserInfo.MajorVer >= 6 || ( BrowserInfo.MajorVer >= 5 && BrowserInfo.MinorVer >= 5 ) ;

var yToolbars = new Array();  // 工具欄數組

// 當文檔完全調入時，進行初始化
var bInitialized = false;
function document.onreadystatechange(){
	if (document.readyState!="complete") return;
	if (bInitialized) return;
	bInitialized = true;

	var i, s, curr;

	// 初始每個工具欄
	for (i=0; i<document.body.all.length;i++){
		curr=document.body.all[i];
		if (curr.className == "yToolbar"){
			InitTB(curr);
			yToolbars[yToolbars.length] = curr;
		}
	}

	oLinkField = parent.document.getElementsByName(sLinkFieldName)[0];
	if (!config.License){
		eWebEditor_License.innerHTML = "<a href='http://www.etwl.com.cn' target='_blank'><font color=#000000>易天工作室</font></a>";
	}

	// IE5.5以下版本只能使用純文本模式
	if (!BrowserInfo.IsIE55OrMore){
		config.InitMode = "TEXT";
	}
	
	if (ContentFlag.value=="0") { 
		ContentEdit.value = oLinkField.value;
		ContentLoad.value = oLinkField.value;
		ModeEdit.value = config.InitMode;
		ContentFlag.value = "1";
	}

	setMode(ModeEdit.value);
	setLinkedField() ;
	eWebEditor.focus();
}

// 初始化一個工具欄上的按鈕
function InitBtn(btn) {
	btn.onmouseover = BtnMouseOver;
	btn.onmouseout = BtnMouseOut;
	btn.onmousedown = BtnMouseDown;
	btn.onmouseup = BtnMouseUp;
	btn.ondragstart = YCancelEvent;
	btn.onselectstart = YCancelEvent;
	btn.onselect = YCancelEvent;
	btn.YUSERONCLICK = btn.onclick;
	btn.onclick = YCancelEvent;
	btn.YINITIALIZED = true;
	return true;
}

//Initialize a toolbar. 
function InitTB(y) {
	// Set initial size of toolbar to that of the handle
	y.TBWidth = 0;
		
	// Populate the toolbar with its contents
	if (! PopulateTB(y)) return false;
	
	// Set the toolbar width and put in the handle
	y.style.posWidth = y.TBWidth;
	
	return true;
}


// Hander that simply cancels an event
function YCancelEvent() {
	event.returnValue=false;
	event.cancelBubble=true;
	return false;
}

// Toolbar button onmouseover handler
function BtnMouseOver() {
	if (event.srcElement.tagName != "IMG") return false;
	var image = event.srcElement;
	var element = image.parentElement;
	
	// Change button look based on current state of image.
	if (image.className == "Ico") element.className = "BtnMouseOverUp";
	else if (image.className == "IcoDown") element.className = "BtnMouseOverDown";

	event.cancelBubble = true;
}

// Toolbar button onmouseout handler
function BtnMouseOut() {
	if (event.srcElement.tagName != "IMG") {
		event.cancelBubble = true;
		return false;
	}

	var image = event.srcElement;
	var element = image.parentElement;
	yRaisedElement = null;
	
	element.className = "Btn";
	image.className = "Ico";

	event.cancelBubble = true;
}

// Toolbar button onmousedown handler
function BtnMouseDown() {
	if (event.srcElement.tagName != "IMG") {
		event.cancelBubble = true;
		event.returnValue=false;
		return false;
	}

	var image = event.srcElement;
	var element = image.parentElement;

	element.className = "BtnMouseOverDown";
	image.className = "IcoDown";

	event.cancelBubble = true;
	event.returnValue=false;
	return false;
}

// Toolbar button onmouseup handler
function BtnMouseUp() {
	if (event.srcElement.tagName != "IMG") {
		event.cancelBubble = true;
		return false;
	}

	var image = event.srcElement;
	var element = image.parentElement;

	if (element.YUSERONCLICK) eval(element.YUSERONCLICK + "anonymous()");

	element.className = "BtnMouseOverUp";
	image.className = "Ico";

	event.cancelBubble = true;
	return false;
}

// Populate a toolbar with the elements within it
function PopulateTB(y) {
	var i, elements, element;

	// Iterate through all the top-level elements in the toolbar
	elements = y.children;
	for (i=0; i<elements.length; i++) {
		element = elements[i];
		if (element.tagName == "SCRIPT" || element.tagName == "!") continue;
		
		switch (element.className) {
		case "Btn":
			if (element.YINITIALIZED == null) {
				if (! InitBtn(element)) {
					alert("Problem initializing:" + element.id);
					return false;
				}
			}
			
			element.style.posLeft = y.TBWidth;
			y.TBWidth += element.offsetWidth + 1;
			break;
			
		case "TBGen":
			element.style.posLeft = y.TBWidth;
			y.TBWidth += element.offsetWidth + 1;
			break;
			
		case "TBSep":
			element.style.posLeft = y.TBWidth + 2;
			y.TBWidth += 5;
			break;
			
		case "TBHandle":
			element.style.posLeft = 2;
			y.TBWidth += element.offsetWidth + 7;
			break;
			
		default:
			alert("Invalid class: " + element.className + " on Element: " + element.id + " <" + element.tagName + ">");
			return false;
		}
	}

	y.TBWidth += 1;
	return true;
}


// 設置所屬表單的提交或reset事件
function setLinkedField() {
	if (! oLinkField) return ;
	var oForm = oLinkField.form ;
	if (!oForm) return ;
	// 附加submit事件
	oForm.attachEvent("onsubmit", AttachSubmit) ;
	if (! oForm.submitEditor) oForm.submitEditor = new Array() ;
	oForm.submitEditor[oForm.submitEditor.length] = AttachSubmit ;
	if (! oForm.originalSubmit) {
		oForm.originalSubmit = oForm.submit ;
		oForm.submit = function() {
			if (this.submitEditor) {
				for (var i = 0 ; i < this.submitEditor.length ; i++) {
					this.submitEditor[i]() ;
				}
			}
			this.originalSubmit() ;
		}
	}
	// 附加reset事件
	oForm.attachEvent("onreset", AttachReset) ;
	if (! oForm.resetEditor) oForm.resetEditor = new Array() ;
	oForm.resetEditor[oForm.resetEditor.length] = AttachReset ;
	if (! oForm.originalReset) {
		oForm.originalReset = oForm.reset ;
		oForm.reset = function() {
			if (this.resetEditor) {
				for (var i = 0 ; i < this.resetEditor.length ; i++) {
					this.resetEditor[i]() ;
				}
			}
			this.originalReset() ;
		}
	}
}

// 附加submit提交事件,大表單數據提交,保存eWebEditor中的內容
function AttachSubmit() { 
	//if (!bEditMode) setMode('EDIT');

	ContentEdit.value = getHTML();
	oLinkField.value = ContentEdit.value;

	var oForm = oLinkField.form ;
	if (!oForm) return ;

	//表單限制值設定，限制值是102399，考慮到中文設為一半
	var FormLimit = 50000 ;

	//取當前表單的值 
	var TempVar = new String ;
	TempVar = oLinkField.value ;
	if (sCurrMode=="TEXT"){
		TempVar = HTMLEncode(TempVar);
		oLinkField.value = TempVar;
	}

	// 未提交成功再次處理時，先賦空值
	for (var i=1;i<parent.document.getElementsByName(sLinkFieldName).length;i++) {
		parent.document.getElementsByName(sLinkFieldName)[i].value = "";
	}

	//如果表單值超過限制，拆成多個對象
	if (TempVar.length > FormLimit) { 
		oLinkField.value = TempVar.substr(0, FormLimit) ;
		TempVar = TempVar.substr(FormLimit) ;

		while (TempVar.length > 0) { 
			var objTEXTAREA = oLinkField.document.createElement("TEXTAREA") ;
			objTEXTAREA.name = sLinkFieldName ;
			objTEXTAREA.style.display = "none" ;
			objTEXTAREA.value = TempVar.substr(0, FormLimit) ;
			oForm.appendChild(objTEXTAREA) ;

			TempVar = TempVar.substr(FormLimit) ;
		} 
	} 
} 

// 附加Reset事件
function AttachReset() {
	//if (!bEditMode) setMode('EDIT');
	if(bEditMode){
		eWebEditor.document.body.innerHTML = ContentLoad.value;
	}else{
		eWebEditor.document.body.innerText = ContentLoad.value;
	}
}

// 粘貼時自動檢測是否來源于Word格式
function onPaste() {
	if (sCurrMode=="VIEW") return false;

	if (sCurrMode=="EDIT"){
		if (config.AutoDetectPasteFromWord && BrowserInfo.IsIE55OrMore) {
			var sHTML = GetClipboardHTML() ;
			var re = /<\w[^>]* class="?MsoNormal"?/gi ;
			if ( re.test(sHTML)){
				if ( confirm( "你要粘貼的內容好象是從Word中拷出來的，是否要先清除Word格式再粘貼？" ) ){
					cleanAndPaste( sHTML ) ;
					return false ;
				}
			}
		}else{
			return true ;
		}
	}else{
		eWebEditor.document.selection.createRange().pasteHTML(HTMLEncode( clipboardData.getData("Text"))) ;
		return false;
	}
	
}

// 快捷鍵
function onKeyPress(event){
	if ((sCurrMode=="EDIT")||(sCurrMode=="VIEW")){
		return true;
	}
	if (event.keyCode==13){
		var sel = eWebEditor.document.selection.createRange();
		sel.pasteHTML("<BR>");
		event.cancelBubble = true;
		event.returnValue = false;
		sel.select();
		sel.moveEnd("character", 1);
		sel.moveStart("character", 1);
		sel.collapse(false);
		return false;
	}

}

// 取剪粘板中的HTML格式數據
function GetClipboardHTML() {
	var oDiv = document.getElementById("eWebEditor_Temp_HTML")
	oDiv.innerHTML = "" ;
	
	var oTextRange = document.body.createTextRange() ;
	oTextRange.moveToElementText(oDiv) ;
	oTextRange.execCommand("Paste") ;
	
	var sData = oDiv.innerHTML ;
	oDiv.innerHTML = "" ;
	
	return sData ;
}

// 清除WORD冗余格式并粘貼
function cleanAndPaste( html ) {
	// Remove all SPAN tags
	html = html.replace(/<\/?SPAN[^>]*>/gi, "" );
	// Remove Class attributes
	html = html.replace(/<(\w[^>]*) class=([^ |>]*)([^>]*)/gi, "<$1$3") ;
	// Remove Style attributes
	html = html.replace(/<(\w[^>]*) style="([^"]*)"([^>]*)/gi, "<$1$3") ;
	// Remove Lang attributes
	html = html.replace(/<(\w[^>]*) lang=([^ |>]*)([^>]*)/gi, "<$1$3") ;
	// Remove XML elements and declarations
	html = html.replace(/<\\?\?xml[^>]*>/gi, "") ;
	// Remove Tags with XML namespace declarations: <o:p></o:p>
	html = html.replace(/<\/?\w+:[^>]*>/gi, "") ;
	// Replace the &nbsp;
	html = html.replace(/&nbsp;/, " " );
	// Transform <P> to <DIV>
	var re = new RegExp("(<P)([^>]*>.*?)(<\/P>)","gi") ;	// Different because of a IE 5.0 error
	html = html.replace( re, "<div$2</div>" ) ;
	
	insertHTML( html ) ;
}

// 在當前文檔位置插入.
function insertHTML(html) {
	if (isModeView()) return false;
	if (eWebEditor.document.selection.type.toLowerCase() != "none"){
		eWebEditor.document.selection.clear() ;
	}
	if (sCurrMode!="EDIT"){
		html=HTMLEncode(html);
	}
	eWebEditor.document.selection.createRange().pasteHTML(html) ; 
}

// 設置編輯器的內容
function setHTML(html) {
	if (isModeView()) return false;
	ContentEdit.value = html;
	if(sCurrMode=="EDIT"){
		eWebEditor.document.body.innerHTML = html;
	}else{
		eWebEditor.document.body.innerText = html;
	}
}

// 取編輯器的內容
function getHTML() {
	var html;
	if((sCurrMode=="EDIT")||(sCurrMode=="VIEW")){
		html = eWebEditor.document.body.innerHTML;
	}else{
		html = eWebEditor.document.body.innerText;
	}
	if (sCurrMode!="TEXT"){
		var re = new RegExp(sBaseUrl.replace(/\//,"\/"),"gi");
		html = html.replace(re, "");
		if ((html.toLowerCase()=="<p>&nbsp;</p>")||(html.toLowerCase()=="<p></p>")){
			html = "";
		}
	}
	return html;
}

// 在尾部追加內容
function appendHTML(html) {
	if (isModeView()) return false;
	if(sCurrMode=="EDIT"){
		eWebEditor.document.body.innerHTML += html;
	}else{
		eWebEditor.document.body.innerText += html;
	}
}

// 從Word中粘貼，去除格式
function PasteWord(){
	if (!validateMode()) return;
	eWebEditor.focus();
	if (BrowserInfo.IsIE55OrMore)
		cleanAndPaste( GetClipboardHTML() ) ;
	else if ( confirm( "此功能要求IE5.5版本以上，你當前的瀏覽器不支持，是否按常規粘貼進行？" ) )
		format("paste") ;
	eWebEditor.focus();
}

// 粘貼純文本
function PasteText(){
	if (!validateMode()) return;
	eWebEditor.focus();
	var sText = HTMLEncode( clipboardData.getData("Text") ) ;
	insertHTML(sText);
	eWebEditor.focus();
}

// 檢測當前是否允許編輯
function validateMode() {
	if (sCurrMode=="EDIT") return true;
	alert("需轉換為編輯狀態后才能使用編輯功能！");
	eWebEditor.focus();
	return false;