post.js

Discuz功能源码（开源）

	if(mode == wysiwyg || !allowswitcheditor)  {
		return;
	}
	if(!mode) {
		var controlbar = $(editorid + '_controls');
		var controls = new Array();
		var buttons = controlbar.getElementsByTagName('a');
		var buttonslength = buttons.length;
		for(var i = 0; i < buttonslength; i++) {
			if(buttons[i].id) {
				controls[controls.length] = buttons[i].id;
			}
		}
		var controlslength = controls.length;
		for(var i = 0; i < controlslength; i++) {
			var control = $(controls[i]);

			if(control.id.indexOf(editorid + '_cmd_') != -1) {
				control.className = control.id.indexOf(editorid + '_cmd_custom') == -1 ? '' : 'plugeditor';
				control.state = false;
				control.mode = 'normal';
			} else if(control.id.indexOf(editorid + '_popup_') != -1) {
				control.state = false;
			}
		}
	}
	cursor = -1;
	stack = new Array();
	var parsedtext = getEditorContents();
	parsedtext = mode ? bbcode2html(parsedtext) : html2bbcode(parsedtext);
	wysiwyg = mode;
	$(editorid + '_mode').value = mode;

	newEditor(mode, parsedtext);
	editwin.focus();
	setCaretAtEnd();
}

function insertNodeAtSelection(text) {
	checkFocus();

	var sel = editwin.getSelection();
	var range = sel ? sel.getRangeAt(0) : editdoc.createRange();
	sel.removeAllRanges();
	range.deleteContents();

	var node = range.startContainer;
	var pos = range.startOffset;

	switch(node.nodeType) {
		case Node.ELEMENT_NODE:
			if(text.nodeType == Node.DOCUMENT_FRAGMENT_NODE) {
				selNode = text.firstChild;
			} else {
				selNode = text;
			}
			node.insertBefore(text, node.childNodes[pos]);
			add_range(selNode);
			break;

		case Node.TEXT_NODE:
			if(text.nodeType == Node.TEXT_NODE) {
				var text_length = pos + text.length;
				node.insertData(pos, text.data);
				range = editdoc.createRange();
				range.setEnd(node, text_length);
				range.setStart(node, text_length);
				sel.addRange(range);
			} else {
				node = node.splitText(pos);
				var selNode;
				if(text.nodeType == Node.DOCUMENT_FRAGMENT_NODE) {
					selNode = text.firstChild;
				} else {
					selNode = text;
				}
				node.parentNode.insertBefore(text, node);
				add_range(selNode);
			}
			break;
	}
}

function add_range(node) {
	checkFocus();
	var sel = editwin.getSelection();
	var range = editdoc.createRange();
	range.selectNodeContents(node);
	sel.removeAllRanges();
	sel.addRange(range);
}

function readNodes(root, toptag) {
	var html = "";
	var moz_check = /_moz/i;

	switch(root.nodeType) {
		case Node.ELEMENT_NODE:
		case Node.DOCUMENT_FRAGMENT_NODE:
			var closed;
			if(toptag) {
				closed = !root.hasChildNodes();
				html = '<' + root.tagName.toLowerCase();
				var attr = root.attributes;
				for(var i = 0; i < attr.length; ++i) {
					var a = attr.item(i);
					if(!a.specified || a.name.match(moz_check) || a.value.match(moz_check)) {
						continue;
					}
					html += " " + a.name.toLowerCase() + '="' + a.value + '"';
				}
				html += closed ? " />" : ">";
			}
			for(var i = root.firstChild; i; i = i.nextSibling) {
				html += readNodes(i, true);
			}
			if(toptag && !closed) {
				html += "</" + root.tagName.toLowerCase() + ">";
			}
			break;

		case Node.TEXT_NODE:
			html = htmlspecialchars(root.data);
			break;
	}
	return html;
}

function moveCursor(increment) {
	var test = cursor + increment;
	if(test >= 0 && stack[test] != null && !isUndefined(stack[test])) {
		cursor += increment;
	}
}

function addSnapshot(str) {
	if(stack[cursor] == str) {
		return;
	} else {
		cursor++;
		stack[cursor] = str;

		if(!isUndefined(stack[cursor + 1])) {
			stack[cursor + 1] = null;
		}
	}
}

function getSnapshot() {
	if(!isUndefined(stack[cursor]) && stack[cursor] != null) {
		return stack[cursor];
	} else {
		return false;
	}
}

function setmediacode(editorid) {
	insertText('[media='+$(editorid + '_mediatype').value+
		','+$(editorid + '_mediawidth').value+
		','+$(editorid + '_mediaheight').value+']'+
		$(editorid + '_mediaurl').value+'[/media]');
	hideMenu();
}

function setmediatype(editorid) {
	var ext = $(editorid + '_mediaurl').value.lastIndexOf('.') == -1 ? '' : $(editorid + '_mediaurl').value.substr($(editorid + '_mediaurl').value.lastIndexOf('.') + 1, $(editorid + '_mediaurl').value.length).toLowerCase();
	if(ext == 'rmvb') {
		ext = 'rm';
	}
	if($(editorid + '_mediatyperadio_' + ext)) {
		$(editorid + '_mediatyperadio_' + ext).checked = true;
		$(editorid + '_mediatype').value = ext;
	}
}

function clearcontent() {
	if(wysiwyg) {
		editdoc.body.innerHTML = is_moz ? '<br />' : '';
	} else {
		textobj.value = '';
	}
}

var aid = 1;
var attachexts = new Array();
var attachwh = new Array();

function delAttach(id) {
	$('attachbody').removeChild($('localno_' + id).parentNode.parentNode);
	$('attachbtn').removeChild($('attach_' + id).parentNode);
	$('attachbody').innerHTML == '' && addAttach();
	$('localimgpreview_' + id) ? document.body.removeChild($('localimgpreview_' + id)) : null;
}

function delSWFAttach(id) {
	$('swfattach_' + id).style.display = 'none';
	$('delswfattach_' + id).checked = true;
}

function delEditAttach(id) {
	$('attach_' + id).style.display = 'none';
	$('delattach_' + id).checked = true;
}

function addAttach() {
	var id = aid;
	var tags, newnode, i;
	newnode = $('attachbtnhidden').firstChild.cloneNode(true);
	tags = newnode.getElementsByTagName('input');
	for(i in tags) {
		if(tags[i].name == 'attach[]') {
			tags[i].id = 'attach_' + id;
			tags[i].onchange = function() {insertAttach(id)};
			tags[i].unselectable = 'on';
		}
	}
	$('attachbtn').appendChild(newnode);
	newnode = $('attachbodyhidden').firstChild.cloneNode(true);
	tags = newnode.getElementsByTagName('input');
	for(i in tags) {
		if(tags[i].name == 'localid[]') {
			tags[i].value = id;
		}
	}
	tags = newnode.getElementsByTagName('span');
	for(i in tags) {
		if(tags[i].id == 'localfile[]') {
			tags[i].id = 'localfile_' + id;
		} else if(tags[i].id == 'cpadd[]') {
			tags[i].id = 'cpadd_' + id;
		} else if(tags[i].id == 'cpdel[]') {
			tags[i].id = 'cpdel_' + id;
		} else if(tags[i].id == 'localno[]') {
			tags[i].id = 'localno_' + id;
		} else if(tags[i].id == 'deschidden[]') {
			tags[i].id = 'deschidden_' + id;
		}
	}
	aid++;
	newnode.style.display = 'none';
	$('attachbody').appendChild(newnode);
	$('uploadlist').scrollTop = 10000;
}

function insertAttach(id) {
	var localimgpreview = '';
	var path = $('attach_' + id).value;
	var extpos = path.lastIndexOf('.');
	var ext = extpos == -1 ? '' : path.substr(extpos + 1, path.length).toLowerCase();
	var re = new RegExp("(^|\\s|,)" + ext + "($|\\s|,)", "ig");
	var localfile = $('attach_' + id).value.substr($('attach_' + id).value.replace(/\\/g, '/').lastIndexOf('/') + 1);
	var filename = mb_cutstr(localfile, 30);

	if(path == '') {
		return;
	}
	if(extensions != '' && (re.exec(extensions) == null || ext == '')) {
		alert('对不起，不支持上传此类扩展名的附件。');
		return;
	}
	attachexts[id] = is_ie && is_ie < 8 && in_array(ext, ['gif', 'jpeg', 'jpg', 'png', 'bmp']) ? 2 : 1;

	if(attachexts[id] == 2) {
		$('img_hidden').alt = id;
		$('img_hidden').filters.item("DXImageTransform.Microsoft.AlphaImageLoader").sizingMethod = 'image';
		try {
			$('img_hidden').filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = $('attach_' + id).value;
		} catch (e) {
			alert('无效的图片文件。');
			delAttach(id);
			return;
		}
		var wh = {'w' : $('img_hidden').offsetWidth, 'h' : $('img_hidden').offsetHeight};
		var aid = $('img_hidden').alt;
		if(wh['w'] >= 180 || wh['h'] >= 150) {
			wh = attachthumbImg(wh['w'], wh['h'], 180, 150);
		}
		attachwh[id] = wh;
		$('img_hidden').style.width = wh['w']
		$('img_hidden').style.height = wh['h'];
		$('img_hidden').filters.item("DXImageTransform.Microsoft.AlphaImageLoader").sizingMethod = 'scale';
		div = document.createElement('div');
		div.id = 'localimgpreview_' + id;
		div.style.display = 'none';
		document.body.appendChild(div);
		div.innerHTML = '<img style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=\'scale\',src=\'' + $('attach_' + id).value+'\');width:'+wh['w']+';height:'+wh['h']+'" src=\'images/common/none.gif\' border="0" aid="attach_'+ aid +'" alt="" />';
	}

	$('cpdel_' + id).innerHTML = '<a href="###" class="deloption" onclick="delAttach(' + id + ')">删除</a>';
	$('cpadd_' + id).innerHTML = '<a href="###" title="点击这里将本附件插入帖子内容中当前光标的位置"' + (attachexts[id] == 2 ? 'onmouseover="showpreview(this, \'localimgpreview_' + id + '\')" ' : '') + 'onclick="insertAttachtext(' + id + ');return false;">插入</a>';
	$('localfile_' + id).innerHTML = filename;
	$('attach_' + id).style.display = 'none';
	$('deschidden_' + id).style.display = '';
	$('deschidden_' + id).title = localfile;
	$('localno_' + id).parentNode.parentNode.style.display = '';
	addAttach();
	attachlist('open');
}

function attachlist(op) {
	if(!op) {
		op = textobj.className == 'autosave' ? 'close' : 'open';
	}
	if(op == 'open') {
		textobj.className = 'autosave';
		if(editbox) {
			editbox.className = 'autosave';
		}
		$('attachlist').style.display = '';
		if(Editorwin) {
			if(wysiwyg) {
				$('e_iframe').style.height = (parseInt($('floatwin_' + editoraction).style.height) - 329)+ 'px';
			}
			$('e_textarea').style.height = (parseInt($('floatwin_' + editoraction).style.height) - 329)+ 'px';
		}
	} else {
		textobj.className = 'autosave max';
		if(editbox) {
			editbox.className = 'autosave max';
		}
		$('attachlist').style.display = 'none';
		if(Editorwin) {
			if(wysiwyg) {
				$('e_iframe').style.height = (parseInt($('floatwin_' + editoraction).style.height) - 150)+ 'px';
			}
			$('e_textarea').style.height = (parseInt($('floatwin_' + editoraction).style.height) - 150)+ 'px';
		}
	}
}

lastshowpreview = null;
function showpreview(ctrlobj, showid) {
	if(lastshowpreview) {
		lastshowpreview.id = '';
	}
	ctrlobj.id = 'imgpreview';
	lastshowpreview = ctrlobj;
	$('imgpreview_menu').innerHTML = $(showid).innerHTML;
	InFloat='floatlayout_' + editoraction;
	showMenu('imgpreview', false, 2, 1, 0);
}

function attachpreview(obj, preview, width, height) {
	if(is_ie) {
		$(preview + '_hidden').filters.item("DXImageTransform.Microsoft.AlphaImageLoader").sizingMethod = 'image';
		try {
			$(preview + '_hidden').filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = obj.value;
		} catch (e) {
			alert('无效的图片文件。');
			return;
		}
		var wh = {'w' : $(preview + '_hidden').offsetWidth, 'h' : $(preview + '_hidden').offsetHeight};
		var aid = $(preview + '_hidden').alt;
		if(wh['w'] >= width || wh['h'] >= height) {
			wh = attachthumbImg(wh['w'], wh['h'], width, height);
		}
		$(preview + '_hidden').style.width = wh['w']
		$(preview + '_hidden').style.height = wh['h'];
		$(preview + '_hidden').filters.item("DXImageTransform.Microsoft.AlphaImageLoader").sizingMethod = 'scale';
		$(preview).style.width = 'auto';
		$(preview).innerHTML = '<img style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=\'scale\',src=\'' + obj.value+'\');width:'+wh['w']+';height:'+wh['h']+'" src=\'images/common/none.gif\' border="0" alt="" />';
	}
}

function insertAttachtext(id) {
	if(!attachexts[id]) {
		return;
	}
	if(attachexts[id] == 2) {
		wysiwyg ? insertText($('localimgpreview_' + id).innerHTML, false) : AddText('[localimg=' + attachwh[id]['w'] + ',' + attachwh[id]['h'] + ']' + id + '[/localimg]');
	} else {
		wysiwyg ? insertText('[local]' + id + '[/local]', false) : AddText('[local]' + id + '[/local]');
	}
}

function attachthumbImg(w, h, twidth, theight) {
	twidth = !twidth ? thumbwidth : twidth;
	theight = !theight ? thumbheight : theight;
	var x_ratio = twidth / w;
	var y_ratio = theight / h;
	var wh = new Array();
	if((x_ratio * h) < theight) {
		wh['h'] = Math.ceil(x_ratio * h);
		wh['w'] = twidth;
	} else {
		wh['w'] = Math.ceil(y_ratio * w);
		wh['h'] = theight;
	}
	return wh;
}

function attachupdate(aid, ctrlobj) {
	objupdate = $('attachupdate'+aid);
	obj = $('attach'+aid);
	if(!objupdate.innerHTML) {
		obj.style.display = 'none';
		objupdate.innerHTML = '<input type="file" name="attachupdate[paid' + aid + ']">';
		ctrlobj.innerHTML = '取消';
	} else {
		obj.style.display = '';
		objupdate.innerHTML = '';
		ctrlobj.innerHTML = '更新';
	}
}

function insertAttachTag(aid) {
	if(wysiwyg) {
		insertText('[attach]' + aid + '[/attach]', false);
	} else {
		AddText('[attach]' + aid + '[/attach]');
	}
}

function insertAttachimgTag(aid) {
	if(wysiwyg) {
		eval('var attachimg = $(\'preview_' + aid + '\')');
		insertText('<img src="' + attachimg.src + '" border="0" aid="attachimg_' + aid + '" width="180" alt="" />', false);
	} else {
		AddText('[attachimg]' + aid + '[/attachimg]');
	}
}

openEditor();

if(allowpostattach) {
	addAttach();
}