www.pudn.com > 网上回答系统.rar > FreeTextBox-MainScript.js
//** FreeTextBox Main Script ********************/
// by John Dyer
// http://www.freetextbox.com/
//***********************************************/
/** START:BROWSER DETECTION ********************/
_d=document;
_nv=navigator.appVersion.toLowerCase();
_f=false;_t=true;
ie4=(!_d.getElementById&&_d.all)?_t:_f;
ie5=(_nv.indexOf("msie 5.0")!=-1)?_t:_f;
ie55=(_nv.indexOf("msie 5.5")!=-1)?_t:_f;
ie6=(_nv.indexOf("msie 6.0")!=-1)?_t:_f;
isIE=(ie5||ie55||ie6)?_t:_f;
/** END:BROWSER DETECTION ********************/
/** START:MAIN FREETEXTBOX FUNCTIONS ********************/
function FTB_InitializeAll() {
for (var i=0; i");
editor.document.write(hiddenHtml.value);
//if (!isIE)
//editor.document.write("");
editor.document.close();
if (isIE) {
if (htmlModeCss != "" || designModeCss != "" ) {
editor.document.createStyleSheet(designModeCss);
editor.document.createStyleSheet(htmlModeCss);
editor.document.styleSheets[1].disabled = true;
}
} else {
// turn off , use
editor.document.execCommand("useCSS", false, true);
}
if (readOnly) {
editor.document.contentEditable = 'False';
} else {
editor.document.contentEditable = 'True';
}
editor.document.body.style.border = '0';
if (FTB_GetTextDirection(ftbName) == "RightToLeft")
editor.document.body.style.direction = 'rtl';
if (isIE) {
editor.document.onkeydown = function() {
return FTB_Event(ftbName);
};
editor.document.onkeypress = function() {
return FTB_Event(ftbName);
};
editor.document.onclick = function() {
return FTB_Event(ftbName);
};
editor.document.onmousedown = function() {
return FTB_Event(ftbName);
};
} else {
editor.addEventListener("keydown", function() {
return FTB_Event(ftbName);
}, true);
editor.addEventListener("keypress", function() {
return FTB_Event(ftbName);
}, true);
editor.addEventListener("click", function() {
return FTB_Event(ftbName);
}, true);
editor.addEventListener("mousedown", function() {
return FTB_Event(ftbName);
}, true);
}
if (startMode != "DesignMode" && FTB_HideToolbar(ftbName)) {
toolbar = FTB_GetToolbar(ftbName);
if (toolbar != null) toolbar.style.display = 'none';
}
}
function FTB_GetFtbName(ftb) {
ftbName = ftb.name;
underscore = ftbName.lastIndexOf("_");
return ftbName.substring(0,underscore);
}
function FTB_ChangeMode(ftb,goToHtmlMode) {
editor = ftb;
ftbName = FTB_GetFtbName(ftb);
var toolbar = FTB_GetToolbar(ftbName);
var hideToolbar = FTB_HideToolbar(ftbName);
var editorContent;
var iframe = document.getElementById(ftbName + "_Editor");
editor.focus();
if (goToHtmlMode) {
if (isIE) {
if (editor.document.styleSheets.length > 0) {
editor.document.styleSheets[0].disabled = true;
editor.document.styleSheets[1].disabled = false;
}
if (FTB_HtmlModeDefaultsToMonoSpaceFont(ftbName) && editor.document.styleSheets.length < 2) {
editor.document.body.style.fontFamily = 'Courier New, Courier New';
editor.document.body.style.fontSize = '10pt';
}
editorContent = editor.document.body.innerHTML;
//alert(editorContent);
editor.document.body.innerText = editorContent;
} else {
editorContent = document.createTextNode(editor.document.body.innerHTML);
editor.document.body.innerHTML = "";
editor.document.body.appendChild(editorContent);
}
if (toolbar != null && hideToolbar ) {
if (!isIE) iframe.style.height = '50%';
toolbar.style.display = 'none';
if (!isIE) setTimeout(function() { iframe.style.height = '100%'; }, 0);
}
return true;
} else {
// go to Design Mode
if (isIE) {
editorContent = editor.document.body.innerText;
if (FTB_HtmlModeDefaultsToMonoSpaceFont(ftbName) && editor.document.styleSheets.length < 2) {
editor.document.body.style.fontFamily = '';
editor.document.body.style.fontSize = '';
}
if (editor.document.styleSheets.length > 0) {
editor.document.styleSheets[0].disabled = false;
editor.document.styleSheets[1].disabled = true;
}
editor.document.body.innerHTML = editorContent;
} else {
editorContent = editor.document.body.ownerDocument.createRange();
editorContent.selectNodeContents(editor.document.body);
editor.document.body.innerHTML = editorContent.toString();
}
if (toolbar != null && hideToolbar ) {
if (!isIE) iframe.style.height = '50%';
toolbar.style.display = '';
if (!isIE) setTimeout(function() { iframe.style.height = '100%'; editor.focus();}, 0);
}
editor.focus();
return true;
}
}
function FTB_CopyHtmlToHidden(ftbName) {
hiddenHtml = FTB_GetHiddenField(ftbName);
editor = FTB_GetIFrame(ftbName);
if (isIE) {
if (FTB_IsHtmlMode(ftbName)) {
hiddenHtml.value = editor.document.body.innerText;
} else {
hiddenHtml.value = editor.document.body.innerHTML;
}
} else {
if (FTB_IsHtmlMode(ftbName)) {
editorContent = editor.document.body.ownerDocument.createRange();
editorContent.selectNodeContents(editor.document.body);
hiddenHtml.value = editorContent.toString();
} else {
hiddenHtml.value = editor.document.body.innerHTML;
}
}
if (hiddenHtml.value == '
' || hiddenHtml.value == '
') {
hiddenHtml.value = '';
}
}
function FTB_Format(ftbName,commandName) {
editor = FTB_GetIFrame(ftbName);
if (FTB_IsHtmlMode(ftbName)) return;
editor.focus();
editor.document.execCommand(commandName,'',null);
//FTB_Event(ftbName);
}
function FTB_SurroundText(ftbName,start,end) {
if (FTB_IsHtmlMode(ftbName)) return;
editor = FTB_GetIFrame(ftbName);
editor.focus();
if (isIE) {
var sel = editor.document.selection.createRange();
html = start + sel.htmlText + end;
sel.pasteHTML(html);
} else {
selection = editor.window.getSelection();
editor.focus();
if (selection) {
range = selection.getRangeAt(0);
} else {
range = editor.document.createRange();
}
FTB_InsertText(ftbName, start + selection + end);
}
}
function FTB_InsertText(ftbName,insertion) {
if (FTB_IsHtmlMode(ftbName)) return;
editor = FTB_GetIFrame(ftbName);
editor.focus();
if (isIE) {
sel = editor.document.selection.createRange();
sel.pasteHTML(insertion);
} else {
editor.focus();
selection = editor.window.getSelection();
if (selection) {
range = selection.getRangeAt(0);
} else {
range = editor.document.createRange();
}
var fragment = editor.document.createDocumentFragment();
var div = editor.document.createElement("div");
div.innerHTML = insertion;
while (div.firstChild) {
fragment.appendChild(div.firstChild);
}
selection.removeAllRanges();
range.deleteContents();
var node = range.startContainer;
var pos = range.startOffset;
switch (node.nodeType) {
case 3:
if (fragment.nodeType == 3) {
node.insertData(pos, fragment.data);
range.setEnd(node, pos + fragment.length);
range.setStart(node, pos + fragment.length);
} else {
node = node.splitText(pos);
node.parentNode.insertBefore(fragment, node);
range.setEnd(node, pos + fragment.length);
range.setStart(node, pos + fragment.length);
}
break;
case 1:
node = node.childNodes[pos];
node.parentNode.insertBefore(fragment, node);
range.setEnd(node, pos + fragment.length);
range.setStart(node, pos + fragment.length);
break;
}
selection.addRange(range);
}
}
function FTB_CheckTag(item,tagName) {
if (item.tagName.search(tagName)!=-1) {
return item;
}
if (item.tagName=='BODY') {
return false;
}
item=item.parentElement;
return FTB_CheckTag(item,tagName);
}
/** END:MAIN FREETEXTBOX FUNCTIONS ********************/
/** START:PROPERTIES ********************/
function FTB_IsHtmlMode(ftbName) {
return (eval(ftbName + "_HtmlMode"));
}
function FTB_TabMode(ftbName) {
return (eval(ftbName + "_TabMode"));
}
function FTB_BreakMode(ftbName) {
return (eval(ftbName + "_BreakMode"));
}
function FTB_HtmlModeDefaultsToMonoSpaceFont(ftbName) {
return (eval(ftbName + "_HtmlModeDefaultsToMonoSpaceFont"));
}
function FTB_HideToolbar(ftbName) {
return (eval(ftbName + "_HideToolbar"));
}
function FTB_UpdateToolbar(ftbName) {
return (eval(ftbName + "_UpdateToolbar"));
}
function FTB_GetHiddenField(ftbName) {
return document.getElementById(ftbName);
}
function FTB_GetTextDirection(ftbName) {
return (eval(ftbName + "_TextDirection"));
}
function FTB_GetIFrame(ftbName) {
if (isIE) {
return eval(ftbName + "_Editor");
//return document.getElementById(ftbName + "_Editor");
} else {
return document.getElementById(ftbName + "_Editor").contentWindow;
}
}
function FTB_GetToolbar(ftbName) {
return document.getElementById(ftbName + "_Toolbar");
}
function FTB_GetToolbarArray(ftbName) {
return eval(ftbName + "_ToolbarItems");
}
function FTB_GetCssID(ftbName) {
cssID = ftbName;
while (cssID.substring(0,1) == '_') {
cssID = cssID.substring(1);
}
return cssID;
}
function FTB_SetButtonStyle(buttonTD,style,checkstyle) {
if (buttonTD == null) return;
if (buttonTD.className != checkstyle)
buttonTD.className = style;
}
function FTB_GetClassSubName(className) {
underscore = className.indexOf("_");
if (underscore < 0) return className;
return className.substring(underscore+1);
}
/** END:PROPERTIES ********************/
/** START:TABS ********************/
function FTB_SetActiveTab(theTD,ftbName) {
parentTR = theTD.parentElement;
parentTR = document.getElementById(ftbName + "_TabRow");
selectedTab = 1;
totalButtons = parentTR.cells.length-1;
for (var i=1;i< totalButtons;i++) {
parentTR.cells[i].className = FTB_GetCssID(ftbName) + "_TabOffRight";
if (theTD == parentTR.cells[i]) { selectedTab = i; }
}
if (selectedTab==1) {
parentTR.cells[0].className = FTB_GetCssID(ftbName) + "_StartTabOn";
} else {
parentTR.cells[0].className = FTB_GetCssID(ftbName) + "_StartTabOff";
parentTR.cells[selectedTab-1].className = FTB_GetCssID(ftbName) + "_TabOffLeft";
}
theTD.className = FTB_GetCssID(ftbName) + "_TabOn";
}
function FTB_TabOver() {
document.body.style.cursor='default';
}
function FTB_TabOut() {
document.body.style.cursor='auto';
}
/** END:TABS ********************/
function FTB_Event(ftbName) {
editor = FTB_GetIFrame(ftbName);
htmlMode = FTB_IsHtmlMode(ftbName);
var _TAB = 9;
var _ENTER = 13;
var _QUOTE = 222;
var _OPENCURLY = '“';
var _CLOSECURLY = '”';
if (isIE) {
// TAB Functions
if (editor.event.keyCode == _TAB) {
var tabMode = FTB_TabMode(ftbName);
if (tabMode == "Disabled") {
editor.event.cancelBubble = true;
editor.event.returnValue = false;
}
if (tabMode == "InsertSpaces") {
FTB_InsertText(ftbName," ");
editor.event.cancelBubble = true;
editor.event.returnValue = false;
}
if (tabMode == "NextControl") {
// do nothing for TabMode.NextControl
}
}
// IE defaults to , Mozilla to
if (editor.event.keyCode == _ENTER) {
var breakMode = FTB_BreakMode(ftbName);
if (breakMode == "LineBreak" || editor.event.ctrlKey || htmlMode) {
var sel = editor.document.selection;
if (sel.type == 'Control') {
return;
}
var r = sel.createRange();
if ((!FTB_CheckTag(r.parentElement(),'LI'))&&(!FTB_CheckTag(r.parentElement(),'H'))) {
r.pasteHTML('
');
editor.event.cancelBubble = true;
editor.event.returnValue = false;
r.select();
r.collapse(false);
return false;
}
}
}
}
// update ToolbarItems only every 50 milliseconds b/c it is expensive
if (!htmlMode && FTB_UpdateToolbar(ftbName)) {
if (editor.timerToolbar) {
clearTimeout(editor.timerToolbar);
}
editor.timerToolbar = setTimeout(function() {
FTB_SetToolbarItems(ftbName);
editor.timerToolbar = null;
}, 50);
}
}
function FTB_SetToolbarItems(ftbName) {
editor = FTB_GetIFrame(ftbName);
htmlMode = FTB_IsHtmlMode(ftbName);
toolbarArray = FTB_GetToolbarArray(ftbName);
//document.getElementById("Debug").value = "";
if (toolbarArray) {
for (var i=0; i -1) {
state = editor.document.queryCommandState(commandIdentifier);
FTB_SetButtonState(toolbarItemID,ftbName,state);
} else {
state = editor.document.queryCommandValue(commandIdentifier);
switch (commandIdentifier) {
case "backcolor":
if (isIE) {
state = FTB_GetHexColor(state);
} else {
if (state == "") state = "#FFFFFF";
}
break;
case "forecolor":
if (isIE) {
state = FTB_GetHexColor(state);
} else {
if (state == "") state = "#000000";
}
break;
case "formatBlock":
//document.getElementById("Debug").value += "****: " + state + "\n";
if (!isIE) {
if (state == "p" || state == "" || state == "")
state = "";
else
state = "<" + state + ">";
}
break;
}
//document.getElementById("Debug").value += commandIdentifier + ": " + state + "\n";
FTB_SetDropDownListState(toolbarItemID,state);
}
} catch(e) {
}
}
}
}
function FTB_GetHexColor(intColor) {
intColor = intColor.toString(16).toUpperCase();
while (intColor.length < 6) {
intColor = "0" + intColor;
}
return "#" + intColor.substring(4,6) + intColor.substring(2,4) + intColor.substring(0,2);
}
function FTB_SetDropDownListState(ddlName,value) {
ddl = document.getElementById(ddlName);
if (ddl) {
for (var i=0; i