richtext.js

通达OA部分源代码

			htmlSrc.selectNodeContents(oRTE.body);
			oRTE.body.innerHTML = htmlSrc.toString();
		}
	}
}

//Function to format text in the text box
function FormatText(rte, command, option) {
	var oRTE;
	if (document.all) {
		oRTE = frames[rte];
		
		//get current selected range
		var selection = oRTE.document.selection; 
		if (selection != null) {
			rng = selection.createRange();
		}
	} else {
		oRTE = document.getElementById(rte).contentWindow;
		
		//get currently selected range
		var selection = oRTE.getSelection();
		rng = selection.getRangeAt(selection.rangeCount - 1).cloneRange();
	}
	
	try {
		if ((command == "forecolor") || (command == "hilitecolor")) {
			//save current values
			parent.command = command;
			currentRTE = rte;
			
			//position and show color palette
			buttonElement = document.getElementById(command + '_' + rte);
			document.getElementById('cp' + rte).style.left = getOffsetLeft(buttonElement) + "px";
			document.getElementById('cp' + rte).style.top = (getOffsetTop(buttonElement) + buttonElement.offsetHeight) + "px";
			if (document.getElementById('cp' + rte).style.visibility == "hidden") {
				document.getElementById('cp' + rte).style.visibility = "visible";
				document.getElementById('cp' + rte).style.display = "inline";
			} else {
				document.getElementById('cp' + rte).style.visibility = "hidden";
				document.getElementById('cp' + rte).style.display = "none";
			}
		} else if (command == "createlink") {
			var szURL = prompt("Enter a URL:", "");
			try {
				//ignore error for blank urls
				oRTE.document.execCommand("Unlink", false, null);
				oRTE.document.execCommand("CreateLink", false, szURL);
			} catch (e) {
				//do nothing
			}
		} else {
			//oRTE.focus();
		  	oRTE.document.execCommand(command, false, option);
			//oRTE.focus();
		}
	} catch (e) {
		alert(e);
	}
}

//Function to set color
function setColor(color) {
	var rte = currentRTE;
	var oRTE;
	if (document.all) {
		oRTE = frames[rte];
	} else {
		oRTE = document.getElementById(rte).contentWindow;
	}
	
	var parentCommand = parent.command;
	if (document.all) {
		//retrieve selected range
		var sel = oRTE.document.selection; 
		if (parentCommand == "hilitecolor") parentCommand = "backcolor";
		if (sel != null) {
			var newRng = sel.createRange();
			newRng = rng;
			newRng.select();
		}
	} else {
		//oRTE.focus();
	}
	oRTE.document.execCommand(parentCommand, false, color);
	//oRTE.focus();
	document.getElementById('cp' + rte).style.visibility = "hidden";
	document.getElementById('cp' + rte).style.display = "none";
}

//Function to add image
function AddImage(rte) {
	var oRTE;
	if (document.all) {
		oRTE = frames[rte];
		
		//get current selected range
		var selection = oRTE.document.selection; 
		if (selection != null) {
			rng = selection.createRange();
		}
	} else {
		oRTE = document.getElementById(rte).contentWindow;
		
		//get currently selected range
		var selection = oRTE.getSelection();
		rng = selection.getRangeAt(selection.rangeCount - 1).cloneRange();
	}
	
	imagePath = prompt('Enter Image URL:', 'http://');				
	if ((imagePath != null) && (imagePath != "")) {
		//oRTE.focus();
		oRTE.document.execCommand('InsertImage', false, imagePath);
	}
	//oRTE.focus();
}

//function to perform spell check
function checkspell() {
	try {
		var tmpis = new ActiveXObject("ieSpell.ieSpellExtension");
		tmpis.CheckAllLinkedDocuments(document);
	}
	catch(exception) {
		if(exception.number==-2146827859) {
			if (confirm("ieSpell not detected.  Click Ok to go to download page."))
				window.open("http://www.iespell.com/download.php","DownLoad");
		} else {
			alert("Error Loading ieSpell: Exception " + exception.number);
		}
	}
}

function getOffsetTop(elm) {
	var mOffsetTop = elm.offsetTop;
	var mOffsetParent = elm.offsetParent;
	
	while(mOffsetParent){
		mOffsetTop += mOffsetParent.offsetTop;
		mOffsetParent = mOffsetParent.offsetParent;
	}
	
	return mOffsetTop;
}

function getOffsetLeft(elm) {
	var mOffsetLeft = elm.offsetLeft;
	var mOffsetParent = elm.offsetParent;
	
	while(mOffsetParent) {
		mOffsetLeft += mOffsetParent.offsetLeft;
		mOffsetParent = mOffsetParent.offsetParent;
	}
	
	return mOffsetLeft;
}

function Select(rte, selectname) {
	var oRTE;
	if (document.all) {
		oRTE = frames[rte];
		
		//get current selected range
		var selection = oRTE.document.selection; 
		if (selection != null) {
			rng = selection.createRange();
		}
	} else {
		oRTE = document.getElementById(rte).contentWindow;
		
		//get currently selected range
		var selection = oRTE.getSelection();
		rng = selection.getRangeAt(selection.rangeCount - 1).cloneRange();
	}
	
	var idx = document.getElementById(selectname).selectedIndex;
	// First one is always a label
	if (idx != 0) {
		var selected = document.getElementById(selectname).options[idx].value;
		var cmd = selectname.replace('_' + rte, '');
		oRTE.document.execCommand(cmd, false, selected);
		document.getElementById(selectname).selectedIndex = 0;
	}
	//oRTE.focus();
}

function kb_handler(evt) {
	var rte = evt.target.id;
	
	//contributed by Anti Veeranna (thanks Anti!)
	if (evt.ctrlKey) {
		var key = String.fromCharCode(evt.charCode).toLowerCase();
		var cmd = '';
		switch (key) {
			case 'b': cmd = "bold"; break;
			case 'i': cmd = "italic"; break;
			case 'u': cmd = "underline"; break;
		};

		if (cmd) {
			FormatText(rte, cmd, true);
			//evt.target.ownerDocument.execCommand(cmd, false, true);
			// stop the event bubble
			evt.preventDefault();
			evt.stopPropagation();
		}
 	}
}

function docChanged (evt) {
	alert('changed');
}

function stripHTML(oldString) {
	var newString = oldString.replace(/(<([^>]+)>)/ig,"");
	
	//replace carriage returns and line feeds
	newString = escape(newString);
	newString = newString.replace("%0D%0A"," ");
	newString = newString.replace("%0A"," ");
	newString = newString.replace("%0D"," ");
	newString = unescape(newString);
	
	//trim string
	newString = trim(newString);
	
	return newString;
}

function trim(inputString) {
   // Removes leading and trailing spaces from the passed string. Also removes
   // consecutive spaces and replaces it with one space. If something besides
   // a string is passed in (null, custom object, etc.) then return the input.
   if (typeof inputString != "string") return inputString;
   var retValue = inputString;
   var ch = retValue.substring(0, 1);
	
   while (ch == " ") { // Check for spaces at the beginning of the string
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }
   ch = retValue.substring(retValue.length-1, retValue.length);
	
   while (ch == " ") { // Check for spaces at the end of the string
      retValue = retValue.substring(0, retValue.length-1);
      ch = retValue.substring(retValue.length-1, retValue.length);
   }
	
	// Note that there are two spaces in the string - look for multiple spaces within the string
   while (retValue.indexOf("  ") != -1) {
		// Again, there are two spaces in each of the strings
      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length);
   }
   return retValue; // Return the trimmed string back to the user
}