richtext.js

图文混排工具 1、新建一个Web工程 2、将Jsp下的页面与.js文件拷贝到工程的WebRoot下面 3、将images文件夹拷贝到工程的WebRoot下面 4、运行工程显示页面Gls.

			frames[rte].document.body.innerHTML = unescape(output);
		} else {
			var oRTE = document.getElementById(rte).contentWindow.document;
			var htmlSrc = oRTE.body.ownerDocument.createRange();
			htmlSrc.selectNodeContents(oRTE.body);
			oRTE.body.innerHTML = htmlSrc.toString();
		}
	}
}

function dlgColorPalette(rte, command) {
	//function to display or hide color palettes
	setRange(rte);
	
	//get dialog position
	var oDialog = document.getElementById('cp' + rte);
	var buttonElement = document.getElementById(command + '_' + rte);
	var iLeftPos = getOffsetLeft(buttonElement);
	var iTopPos = getOffsetTop(buttonElement) + (buttonElement.offsetHeight + 4);
	oDialog.style.left = (iLeftPos) + "px";
	oDialog.style.top = (iTopPos) + "px";
	
	if ((command == parent.command) && (rte == currentRTE)) {
		//if current command dialog is currently open, close it
		if (oDialog.style.visibility == "hidden") {
			showHideElement(oDialog, 'show');
		} else {
			showHideElement(oDialog, 'hide');
		}
	} else {
		//if opening a new dialog, close all others
		var vRTEs = allRTEs.split(";");
		for (var i = 0; i < vRTEs.length; i++) {
			showHideElement('cp' + vRTEs[i], 'hide');
		}
		showHideElement(oDialog, 'show');
	}
	
	//save current values
	parent.command = command;
	currentRTE = rte;
}

function dlgInsertTable(rte, command) {
	//function to open/close insert table dialog
	//save current values
	parent.command = command;
	currentRTE = rte;
	InsertTable = popUpWin(includesPath + 'insert_table.htm', 'InsertTable', 360, 180, '');
}

function dlgInsertLink(rte, command) {
	//function to open/close insert table dialog
	//save current values
	parent.command = command;
	currentRTE = rte;
	InsertLink = popUpWin(includesPath + 'insert_link.htm', 'InsertLink', 360, 180, '');
	
	//get currently highlighted text and set link text value
	setRange(rte);
	var linkText = '';
	if (isIE) {
		linkText = stripHTML(rng.htmlText);
	} else {
		linkText = stripHTML(rng.toString());
	}
	setLinkText(linkText);
}

function setLinkText(linkText) {
	//set link text value in insert link dialog
	try {
		window.InsertLink.document.linkForm.linkText.value = linkText;
	} catch (e) {
		//may take some time to create dialog window.
		//Keep looping until able to set.
		setTimeout("setLinkText('" + linkText + "');", 10);
	}
}

function popUpWin (url, win, width, height, options) {
	var leftPos = (screen.availWidth - width) / 2;
	var topPos = (screen.availHeight - height) / 2;
	options += 'width=' + width + ',height=' + height + ',left=' + leftPos + ',top=' + topPos;
	return window.open(url, win, options);
}

function setColor(color) {
	//function to set color
	var rte = currentRTE;
	var parentCommand = parent.command;
	
	if (document.all) {
		if (parentCommand == "hilitecolor") parentCommand = "backcolor";
		
		//retrieve selected range
		rng.select();
	}
	
	rteCommand(rte, parentCommand, color);
	showHideElement('cp' + rte, "hide");
}

function addImage(rte) {
	//function to add image
	//window.open("blank.htm");
	imagePath = prompt('请输入图像的URL:', '');	
	//alert(imagePath);
	if ((imagePath != null) && (imagePath != "")) {
		rteCommand(rte, 'InsertImage', imagePath);
	}
}

// Ernst de Moor: Fix the amount of digging parents up, in case the RTE editor itself is displayed in a div.
// KJR 11/12/2004 Changed to position palette based on parent div, so palette will always appear in proper location regardless of nested divs
function getOffsetTop(elm) {
	var mOffsetTop = elm.offsetTop;
	var mOffsetParent = elm.offsetParent;
	var parents_up = 2; //the positioning div is 2 elements up the tree
	
	while(parents_up > 0) {
		mOffsetTop += mOffsetParent.offsetTop;
		mOffsetParent = mOffsetParent.offsetParent;
		parents_up--;
	}
	
	return mOffsetTop;
}

// Ernst de Moor: Fix the amount of digging parents up, in case the RTE editor itself is displayed in a div.
// KJR 11/12/2004 Changed to position palette based on parent div, so palette will always appear in proper location regardless of nested divs
function getOffsetLeft(elm) {
	var mOffsetLeft = elm.offsetLeft;
	var mOffsetParent = elm.offsetParent;
	var parents_up = 2;
	
	while(parents_up > 0) {
		mOffsetLeft += mOffsetParent.offsetLeft;
		mOffsetParent = mOffsetParent.offsetParent;
		parents_up--;
	}
	
	return mOffsetLeft;
}

function selectFont(rte, selectname) {
	//function to handle font changes
	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, '');
		rteCommand(rte, cmd, selected);
		document.getElementById(selectname).selectedIndex = 0;
	}
}

function insertHTML(html) {
	//function to add HTML -- thanks dannyuk1982
	var rte = currentRTE;
	
	var oRTE;
	if (document.all) {
		oRTE = frames[rte];
	} else {
		oRTE = document.getElementById(rte).contentWindow;
	}
	
	oRTE.focus();
	if (document.all) {
		var oRng = oRTE.document.selection.createRange();
		oRng.pasteHTML(html);
		oRng.collapse(false);
		oRng.select();
	} else {
		oRTE.document.execCommand('insertHTML', false, html);
	}
}

function showHideElement(element, showHide) {
	//function to show or hide elements
	//element variable can be string or object
	if (document.getElementById(element)) {
		element = document.getElementById(element);
	}
	
	if (showHide == "show") {
		element.style.visibility = "visible";
	} else if (showHide == "hide") {
		element.style.visibility = "hidden";
	}
}

function setRange(rte) {
	//function to store range of current selection
	var oRTE;
	if (document.all) {
		oRTE = frames[rte];
		var selection = oRTE.document.selection; 
		if (selection != null) rng = selection.createRange();
	} else {
		oRTE = document.getElementById(rte).contentWindow;
		var selection = oRTE.getSelection();
		rng = selection.getRangeAt(selection.rangeCount - 1).cloneRange();
	}
	return rng;
}

function stripHTML(oldString) {
	//function to strip all html
	var newString = oldString.replace(/(<([^>]+)>)/ig,"");
	
	//replace carriage returns and line feeds
   newString = newString.replace(/\r\n/g," ");
   newString = newString.replace(/\n/g," ");
   newString = newString.replace(/\r/g," ");
	
	//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
}

//********************
//Gecko-Only Functions
//********************
function geckoKeyPress(evt) {
	//function to add bold, italic, and underline shortcut commands to gecko RTEs
	//contributed by Anti Veeranna (thanks Anti!)
	var rte = evt.target.id;
	
	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) {
			rteCommand(rte, cmd, null);
			
			// stop the event bubble
			evt.preventDefault();
			evt.stopPropagation();
		}
 	}
}

//*****************
//IE-Only Functions
//*****************
function ieKeyPress(evt, rte) {
	var key = (evt.which || evt.charCode || evt.keyCode);
	var stringKey = String.fromCharCode(key).toLowerCase();
	
//the following breaks list and indentation functionality in IE (don't use)
//	switch (key) {
//		case 13:
//			//insert <br> tag instead of <p>
//			//change the key pressed to null
//			evt.keyCode = 0;
//			
//			//insert <br> tag
//			currentRTE = rte;
//			insertHTML('<br>');
//			break;
//	};
}

function raiseButton(e) {
	var el = window.event.srcElement;
	
	className = el.className;
	if (className == 'rteImage' || className == 'rteImageLowered') {
		el.className = 'rteImageRaised';
	}
}

function normalButton(e) {
	var el = window.event.srcElement;
	
	className = el.className;
	if (className == 'rteImageRaised' || className == 'rteImageLowered') {
		el.className = 'rteImage';
	}
}

function lowerButton(e) {
	var el = window.event.srcElement;
	
	className = el.className;
	if (className == 'rteImage' || className == 'rteImageRaised') {
		el.className = 'rteImageLowered';
	}
}