post.js

Discuz功能源码（开源）

	try {
		obj = is_ie ? event.srcElement : e.target;
		var ctrlid = obj.id.substr(0, obj.id.lastIndexOf('_param_'));
		if((obj.type == 'text' && e.keyCode == 13) || (obj.type == 'textarea' && e.ctrlKey && e.keyCode == 13)) {
			$(ctrlid + '_submit').click();
			doane(e);
		} else if(e.keyCode == 27) {
			hideMenu();
			$(ctrlid + '_menu').parentNode.removeChild($(ctrlid + '_menu'));
		}
	} catch(e) {}
}

function customTags(tagname, params) {
	var sel;
	if(is_ie) {
		sel = wysiwyg ? editdoc.selection.createRange() : document.selection.createRange();
		var pos = getCaret();
	}
	var selection = sel ? (wysiwyg ? sel.htmlText : sel.text) : getSel();
	var opentag = '[' + tagname + ']';
	var closetag = '[/' + tagname + ']';
	var haveSel = selection == null || selection == false || in_array(trim(selection), ['', 'null', 'undefined', 'false']) ? 0 : 1;
	if(params == 1 && haveSel) {
		return insertText((opentag + selection + closetag), strlen(opentag), strlen(closetag), true, sel);
	}
	var ctrlid = editorid + '_cmd_custom' + params + '_' + tagname;
	var promptlang = custombbcodes[tagname]['prompt'].split("\t");
	var str = '';
	for(var i = 1; i <= params; i++) {
		if(i != params || !haveSel) {
			str += (promptlang[i - 1] ? promptlang[i - 1] : '请输入第 ' + i + ' 个参数:') + '<br /><input type="text" id="' + ctrlid + '_param_' + i + '" style="width: 98%" value="" class="txt" />' + (i < params ? '<br />' : '');
		}
	}
	var div = editorMenu(ctrlid, str);
	$(ctrlid + '_param_1').focus();
	for(var i = 1; i <= params; i++) {if(i != params || !haveSel) $(ctrlid + '_param_' + i).onkeydown = editorMenuEvent_onkeydown;}
	$(ctrlid + '_submit').onclick = function() {
		var first = $(ctrlid + '_param_1').value;
		if($(ctrlid + '_param_2')) var second = $(ctrlid + '_param_2').value;
		if($(ctrlid + '_param_3')) var third = $(ctrlid + '_param_3').value;
		checkFocus();
		if(is_ie) {
			setCaret(pos);
		}
		if((params == 1 && first) || (params == 2 && first && (haveSel || second)) || (params == 3 && first && second && (haveSel || third))) {
			var text;
			if(params == 1) {
				text = first;
			} else if(params == 2) {
				text = haveSel ? selection : second;
				opentag = '[' + tagname + '=' + first + ']';
			} else {
				text = haveSel ? selection : third;
				opentag = '[' + tagname + '=' + first + ',' + second + ']';
			}
			insertText((opentag + text + closetag), strlen(opentag), strlen(closetag), true, sel);
		}
		hideMenu();
		div.parentNode.removeChild(div);
	};
}

function editorMenu(ctrlid, str) {
	var div = document.createElement('div');
	div.id = ctrlid + '_menu';
	div.style.display = 'none';
	div.className = 'popupmenu_popup popupfix';
	div.style.width = '300px';
	$(editorid + '_controls').appendChild(div);
	div.innerHTML = '<div class="popupmenu_option" unselectable="on">' + str + '<br /><center><input type="button" id="' + ctrlid + '_submit" value="提交" /> &nbsp; <input type="button" onClick="hideMenu();try{div.parentNode.removeChild(' + div.id + ')}catch(e){}" value="取消" /></center></div>';
	InFloat = InFloat_Editor;
	showMenu(ctrlid, true, 0, 3);
	return div;
}

function discuzcode(cmd, arg) {
	if(cmd != 'redo') {
		addSnapshot(getEditorContents());
	}

	checkFocus();

	if(in_array(cmd, ['quote', 'code', 'free', 'hide'])) {
		var sel;
		if(is_ie) {
			sel = wysiwyg ? editdoc.selection.createRange() : document.selection.createRange();
			var pos = getCaret();
		}
		var selection = sel ? (wysiwyg ? sel.htmlText : sel.text) : getSel();
		var opentag = '[' + cmd + ']';
		var closetag = '[/' + cmd + ']';
		if(cmd != 'hide' && selection) {
			return insertText((opentag + selection + closetag), strlen(opentag), strlen(closetag), true, sel);
		}
		var ctrlid = editorid + '_cmd_' + cmd;
		var str = '';
		lang['e_quote'] = '请输入要插入的引用';
		lang['e_code'] = '请输入要插入的代码';
		lang['e_free'] = '请输入要插入的免费信息';
		lang['e_hide'] = '请输入要插入的隐藏内容';
		if(cmd != 'hide' || !selection) {
			str += lang['e_' + cmd] + ':<br /><textarea id="' + ctrlid + '_param_1" style="width: 98%" cols="50" rows="5"></textarea>';
		}
		str += cmd == 'hide' ? '<br /><input type="radio" name="' + ctrlid + '_radio" id="' + ctrlid + '_radio_1" class="txt" checked="checked" />只有当浏览者回复本帖时才显示<br /><input type="radio" name="' + ctrlid + '_radio" id="' + ctrlid + '_radio_2" class="txt" />只有当浏览者积分高于 <input type="text" size="3" id="' + ctrlid + '_param_2" class="txt" /> 时才显示' : '';
		var div = editorMenu(ctrlid, str);
		$(ctrlid + '_param_' + (cmd == 'hide' && selection ? 2 : 1)).focus();
		$(ctrlid + '_param_' + (cmd == 'hide' && selection ? 2 : 1)).onkeydown = editorMenuEvent_onkeydown;
		$(ctrlid + '_submit').onclick = function() {
			checkFocus();
			if(is_ie) {
				setCaret(pos);
			}
			if(cmd == 'hide' && $(ctrlid + '_radio_2').checked) {
				var mincredits = parseInt($(ctrlid + '_param_2').value);
				opentag = mincredits > 0 ? '[hide=' + mincredits + ']' : '[hide]';
			}
			var text = selection ? selection : $(ctrlid + '_param_1').value;
			if(wysiwyg) {
				if(cmd == 'code') {
					text = preg_replace(['<', '>'], ['&lt;', '&gt;'], text);
				}
				text = text.replace(/\r?\n/g, '<br />');
			}
			text = opentag + text + closetag;
			insertText(text, strlen(opentag), strlen(closetag), false, sel);
			hideMenu();
			div.parentNode.removeChild(div);
		}
		return;
	} else if(cmd.substr(0, 6) == 'custom') {
		var ret = customTags(cmd.substr(8), cmd.substr(6, 1));
	} else if(!wysiwyg && cmd == 'removeformat') {
		var simplestrip = new Array('b', 'i', 'u');
		var complexstrip = new Array('font', 'color', 'size');

		var str = getSel();
		if(str === false) {
			return;
		}
		for(var tag in simplestrip) {
			str = stripSimple(simplestrip[tag], str);
		}
		for(var tag in complexstrip) {
			str = stripComplex(complexstrip[tag], str);
		}
		insertText(str);
	} else if(!wysiwyg && cmd == 'undo') {
		addSnapshot(getEditorContents());
		moveCursor(-1);
		if((str = getSnapshot()) !== false) {
			editdoc.value = str;
		}
	} else if(!wysiwyg && cmd == 'redo') {
		moveCursor(1);
		if((str = getSnapshot()) !== false) {
			editdoc.value = str;
		}
	} else if(!wysiwyg && in_array(cmd, ['insertorderedlist', 'insertunorderedlist'])) {
		var listtype = cmd == 'insertorderedlist' ? '1' : '';
		var opentag = '[list' + (listtype ? ('=' + listtype) : '') + ']\n';
		var closetag = '[/list]';

		if(txt = getSel()) {
			var regex = new RegExp('([\r\n]+|^[\r\n]*)(?!\\[\\*\\]|\\[\\/?list)(?=[^\r\n])', 'gi');
			txt = opentag + trim(txt).replace(regex, '$1[*]') + '\n' + closetag;
			insertText(txt, strlen(txt), 0);
		} else {
			insertText(opentag + closetag, opentag.length, closetag.length);

			while(listvalue = prompt('输入一个列表项目.\r\n留空或者点击取消完成此列表.', '')) {
				if(is_opera > 8) {
					listvalue = '\n' + '[*]' + listvalue;
					insertText(listvalue, strlen(listvalue) + 1, 0);
				} else {
					listvalue = '[*]' + listvalue + '\n';
					insertText(listvalue, strlen(listvalue), 0);
				}
			}
		}
	} else if(!wysiwyg && cmd == 'outdent') {
		var sel = getSel();
		sel = stripSimple('indent', sel, 1);
		insertText(sel);
	} else if(cmd == 'createlink') {
		insertlink('createlink');
	} else if(!wysiwyg && cmd == 'unlink') {
		var sel = getSel();
		sel = stripSimple('url', sel);
		sel = stripComplex('url', sel);
		insertText(sel);
	} else if(cmd == 'email') {
		insertlink('email');
	} else if(cmd == 'insertimage') {
		insertimage('insertimage');
	} else if(cmd == 'table') {
		if(wysiwyg) {
			var selection = getSel();
			if(is_ie) {
				var pos = getCaret();
			}
			var ctrlid = editorid + '_cmd_table';
			var str = '<p>表格行数: <input type="text" id="' + ctrlid + '_param_rows" size="2" value="2" class="txt" /> &nbsp; 表格列数: <input type="text" id="' + ctrlid + '_param_columns" size="2" value="2" class="txt" /></p><p>表格宽度: <input type="text" id="' + ctrlid + '_param_width" size="2" value="" class="txt" /> &nbsp; 背景颜色: <input type="text" id="' + ctrlid + '_param_bgcolor" size="2" class="txt" /></p>';
			var div = editorMenu(ctrlid, str);
			$(ctrlid + '_param_rows').focus();
			var params = ['rows', 'columns', 'width', 'bgcolor'];
			for(var i = 0; i < 4; i++) {$(ctrlid + '_param_' + params[i]).onkeydown = editorMenuEvent_onkeydown;}
			$(ctrlid + '_submit').onclick = function() {
				checkFocus();
				if(is_ie) {
					setCaret(pos);
				}
				var rows = $(ctrlid + '_param_rows').value;
				var columns = $(ctrlid + '_param_columns').value;
				var width = $(ctrlid + '_param_width').value;
				var bgcolor = $(ctrlid + '_param_bgcolor').value;
				rows = /^[-\+]?\d+$/.test(rows) && rows > 0 && rows <= 30 ? rows : 2;
				columns = /^[-\+]?\d+$/.test(columns) && columns > 0 && columns <= 30 ? columns : 2;
				width = width.substr(width.length - 1, width.length) == '%' ? (width.substr(0, width.length - 1) <= 98 ? width : '98%') : (width <= 560 ? width : '98%');
				bgcolor = /[\(\)%,#\w]+/.test(bgcolor) ? bgcolor : '';
				var html = '<table cellspacing="0" cellpadding="0" width="' + (width ? width : '50%') + '" class="t_table"' + (bgcolor ? ' bgcolor="' + bgcolor + '"' : '') + '>';
				for (var row = 0; row < rows; row++) {
					html += '<tr>\n';
					for (col = 0; col < columns; col++) {
						html += '<td>&nbsp;</td>\n';
					}
					html+= '</tr>\n';
				}
				html += '</table>\n';
				insertText(html);
				hideMenu();
				div.parentNode.removeChild(div);
			}
		}
		return false;
	} else if(cmd == 'floatleft' || cmd == 'floatright') {
		if(wysiwyg) {
			var selection = getSel();
			if(selection) {
				var ret = insertText('<br style="clear: both"><span style="float: ' + cmd.substr(5) + '">' + selection + '</span>', true);
			}
		} else {
			var ret = applyFormat(cmd, false);
		}
	} else if(cmd == 'loadData') {
		loadData();hideMenu();
	} else if(cmd == 'saveData') {
		autosaveData(2);hideMenu();
	} else if(cmd == 'autosave') {
		if(getcookie('disableautosave')) {
			autosaveData(1);
		} else {
			autosaveData(0);
		}
	} else if(cmd == 'checklength') {
		checklength($('postform'));hideMenu();
	} else if(cmd == 'clearcontent') {
		clearcontent();hideMenu();
	} else {
		try {
			var ret = applyFormat(cmd, false, (isUndefined(arg) ? true : arg));
		} catch(e) {
			var ret = false;
		}
	}

	if(cmd != 'undo') {
		addSnapshot(getEditorContents());
	}
	if(in_array(cmd, ['bold', 'italic', 'underline', 'fontname', 'fontsize', 'forecolor', 'justifyleft', 'justifycenter', 'justifyright', 'insertorderedlist', 'insertunorderedlist', 'indent', 'outdent', 'floatleft', 'floatright', 'removeformat', 'unlink', 'undo', 'redo'])) {
		hideMenu();
	}
	return ret;
}

function getSel() {
	if(wysiwyg) {
		if(is_moz || is_opera) {
			selection = editwin.getSelection();
			checkFocus();
			range = selection ? selection.getRangeAt(0) : editdoc.createRange();
			return readNodes(range.cloneContents(), false);
		} else {
			var range = editdoc.selection.createRange();
			if(range.htmlText && range.text) {
				return range.htmlText;
			} else {
				var htmltext = '';
				for(var i = 0; i < range.length; i++) {
					htmltext += range.item(i).outerHTML;
				}
				return htmltext;
			}
		}
	} else {
		if(!isUndefined(editdoc.selectionStart)) {
			return editdoc.value.substr(editdoc.selectionStart, editdoc.selectionEnd - editdoc.selectionStart);
		} else if(document.selection && document.selection.createRange) {
			return document.selection.createRange().text;
		} else if(window.getSelection) {
			return window.getSelection() + '';
		} else {
			return false;
		}
	}
}

function insertText(text, movestart, moveend, select, sel) {
	if(wysiwyg) {
		if(is_moz || is_opera) {
			applyFormat('removeformat');
			var fragment = editdoc.createDocumentFragment();
			var holder = editdoc.createElement('span');
			holder.innerHTML = text;

			while(holder.firstChild) {
				fragment.appendChild(holder.firstChild);
			}
			insertNodeAtSelection(fragment);
		} else {
			checkFocus();
			if(!isUndefined(editdoc.selection) && editdoc.selection.type != 'Text' && editdoc.selection.type != 'None') {
				movestart = false;
				editdoc.selection.clear();
			}

			if(isUndefined(sel)) {
				sel = editdoc.selection.createRange();
			}

			sel.pasteHTML(text);

			if(text.indexOf('\n') == -1) {
				if(!isUndefined(movestart)) {
					sel.moveStart('character', -strlen(text) + movestart);
					sel.moveEnd('character', -moveend);
				} else if(movestart != false) {
					sel.moveStart('character', -strlen(text));
				}
				if(!isUndefined(select) && select) {
					sel.select();
				}
			}
		}
	} else {
		checkFocus();
		if(!isUndefined(editdoc.selectionStart)) {
			var opn = editdoc.selectionStart + 0;
			editdoc.value = editdoc.value.substr(0, editdoc.selectionStart) + text + editdoc.value.substr(editdoc.selectionEnd);

			if(!isUndefined(movestart)) {
				editdoc.selectionStart = opn + movestart;
				editdoc.selectionEnd = opn + strlen(text) - moveend;
			} else if(movestart !== false) {
				editdoc.selectionStart = opn;
				editdoc.selectionEnd = opn + strlen(text);
			}
		} else if(document.selection && document.selection.createRange) {
			if(isUndefined(sel)) {
				sel = document.selection.createRange();
			}
			sel.text = text.replace(/\r?\n/g, '\r\n');
			if(!isUndefined(movestart)) {
				sel.moveStart('character', -strlen(text) +movestart);
				sel.moveEnd('character', -moveend);
			} else if(movestart !== false) {
				sel.moveStart('character', -strlen(text));
			}
			sel.select();
		} else {
			editdoc.value += text;
		}
	}
}

function stripSimple(tag, str, iterations) {
	var opentag = '[' + tag + ']';
	var closetag = '[/' + tag + ']';

	if(isUndefined(iterations)) {
		iterations = -1;
	}
	while((startindex = stripos(str, opentag)) !== false && iterations != 0) {
		iterations --;
		if((stopindex = stripos(str, closetag)) !== false) {
			var text = str.substr(startindex + opentag.length, stopindex - startindex - opentag.length);
			str = str.substr(0, startindex) + text + str.substr(stopindex + closetag.length);
		} else {
			break;
		}
	}
	return str;
}

function stripComplex(tag, str, iterations) {
	var opentag = '[' + tag + '=';
	var closetag = '[/' + tag + ']';

	if(isUndefined(iterations)) {
		iterations = -1;
	}
	while((startindex = stripos(str, opentag)) !== false && iterations != 0) {
		iterations --;
		if((stopindex = stripos(str, closetag)) !== false) {
			var openend = stripos(str, ']', startindex);
			if(openend !== false && openend > startindex && openend < stopindex) {
				var text = str.substr(openend + 1, stopindex - openend - 1);
				str = str.substr(0, startindex) + text + str.substr(stopindex + closetag.length);
			} else {
				break;
			}
		} else {
			break;
		}
	}
	return str;
}

function stripos(haystack, needle, offset) {
	if(isUndefined(offset)) {
		offset = 0;
	}
	var index = haystack.toLowerCase().indexOf(needle.toLowerCase(), offset);

	return (index == -1 ? false : index);
}

function switchEditor(mode) {
	mode = parseInt(mode);