ajax.js

/*
	[Discuz!] (C)2001-2099 Comsenz Inc.
	This is NOT a freeware, use is subject to license terms

	$Id: ajax.js 34259 2013-11-26 07:37:25Z nemohou $
*/

function _ajaxget(url, showid, waitid, loading, display, recall) {
	waitid = typeof waitid == 'undefined' || waitid === null ? showid : waitid;
	var x = new Ajax();
	x.setLoading(loading);
	x.setWaitId(waitid);
	x.display = typeof display == 'undefined' || display == null ? '' : display;
	x.showId = $(showid);

	if(url.substr(strlen(url) - 1) == '#') {
		url = url.substr(0, strlen(url) - 1);
		x.autogoto = 1;
	}

	var url = url + '&inajax=1&ajaxtarget=' + showid;
	x.get(url, function(s, x) {
		var evaled = false;
		if(s.indexOf('ajaxerror') != -1) {
			evalscript(s);
			evaled = true;
		}
		if(!evaled && (typeof ajaxerror == 'undefined' || !ajaxerror)) {
			if(x.showId) {
				x.showId.style.display = x.display;
				ajaxinnerhtml(x.showId, s);
				ajaxupdateevents(x.showId);
				if(x.autogoto) scroll(0, x.showId.offsetTop);
			}
		}

		ajaxerror = null;
		if(recall && typeof recall == 'function') {
			recall();
		} else if(recall) {
			eval(recall);
		}
		if(!evaled) evalscript(s);
	});
}

function _ajaxpost(formid, showid, waitid, showidclass, submitbtn, recall) {
	var waitid = typeof waitid == 'undefined' || waitid === null ? showid : (waitid !== '' ? waitid : '');
	var showidclass = !showidclass ? '' : showidclass;
	var ajaxframeid = 'ajaxframe';
	var ajaxframe = $(ajaxframeid);
	var curform = $(formid);
	var formtarget = curform.target;

	var handleResult = function() {
		var s = '';
		var evaled = false;

		showloading('none');
		try {
			s = $(ajaxframeid).contentWindow.document.XMLDocument.text;
		} catch(e) {
			try {
				s = $(ajaxframeid).contentWindow.document.documentElement.firstChild.wholeText;
			} catch(e) {
				try {
					s = $(ajaxframeid).contentWindow.document.documentElement.firstChild.nodeValue;
				} catch(e) {
					s = '内部错误，无法显示此内容';
				}
			}
		}
		if(s != '' && s.indexOf('ajaxerror') != -1) {
			evalscript(s);
			evaled = true;
		}
		if(showidclass) {
			if(showidclass != 'onerror') {
				$(showid).className = showidclass;
			} else {
				showError(s);
				ajaxerror = true;
			}
		}
		if(submitbtn) {
			submitbtn.disabled = false;
		}
		if(!evaled && (typeof ajaxerror == 'undefined' || !ajaxerror)) {
			ajaxinnerhtml($(showid), s);
		}
		ajaxerror = null;
		if(curform) curform.target = formtarget;
		if(typeof recall == 'function') {
			recall();
		} else {
			eval(recall);
		}
		if(!evaled) evalscript(s);
		ajaxframe.loading = 0;
		if(!BROWSER.firefox || BROWSER.safari) {
			$('append_parent').removeChild(ajaxframe.parentNode);
		} else {
			setTimeout(
				function(){
					$('append_parent').removeChild(ajaxframe.parentNode);
				},
				100
			);
		}
	};
	if(!ajaxframe) {
		var div = document.createElement('div');
		div.style.display = 'none';
		div.innerHTML = '<iframe name="' + ajaxframeid + '" id="' + ajaxframeid + '" loading="1"></iframe>';
		$('append_parent').appendChild(div);
		ajaxframe = $(ajaxframeid);
	} else if(ajaxframe.loading) {
		return false;
	}

	_attachEvent(ajaxframe, 'load', handleResult);

	showloading();
	curform.target = ajaxframeid;
	var action = curform.getAttribute('action');
	action = hostconvert(action);
	curform.action = action.replace(/\&inajax\=1/g, '')+'&inajax=1';
	curform.submit();
	if(submitbtn) {
		submitbtn.disabled = true;
	}
	doane();
	return false;
}

function _ajaxmenu(ctrlObj, timeout, cache, duration, pos, recall, idclass, contentclass) {
	if(!ctrlObj.getAttribute('mid')) {
		var ctrlid = ctrlObj.id;
		if(!ctrlid) {
			ctrlObj.id = 'ajaxid_' + Math.random();
		}
	} else {
		var ctrlid = ctrlObj.getAttribute('mid');
		if(!ctrlObj.id) {
			ctrlObj.id = 'ajaxid_' + Math.random();
		}
	}
	var menuid = ctrlid + '_menu';
	var menu = $(menuid);
	if(isUndefined(timeout)) timeout = 3000;
	if(isUndefined(cache)) cache = 1;
	if(isUndefined(pos)) pos = '43';
	if(isUndefined(duration)) duration = timeout > 0 ? 0 : 3;
	if(isUndefined(idclass)) idclass = 'p_pop';
	if(isUndefined(contentclass)) contentclass = 'p_opt';
	var func = function() {
		showMenu({'ctrlid':ctrlObj.id,'menuid':menuid,'duration':duration,'timeout':timeout,'pos':pos,'cache':cache,'layer':2});
		if(typeof recall == 'function') {
			recall();
		} else {
			eval(recall);
		}
	};

	if(menu) {
		if(menu.style.display == '') {
			hideMenu(menuid);
		} else {
			func();
		}
	} else {
		menu = document.createElement('div');
		menu.id = menuid;
		menu.style.display = 'none';
		menu.className = idclass;
		menu.innerHTML = '<div class="' + contentclass + '" id="' + menuid + '_content"></div>';
		$('append_parent').appendChild(menu);
		var url = (!isUndefined(ctrlObj.attributes['shref']) ? ctrlObj.attributes['shref'].value : (!isUndefined(ctrlObj.href) ? ctrlObj.href : ctrlObj.attributes['href'].value));
		url += (url.indexOf('?') != -1 ? '&' :'?') + 'ajaxmenu=1';
		ajaxget(url, menuid + '_content', 'ajaxwaitid', '', '', func);
	}
	doane();
}

function _appendscript(src, text, reload, charset) {
	var id = hash(src + text);
	if(!reload && in_array(id, evalscripts)) return;
	if(reload && $(id)) {
		$(id).parentNode.removeChild($(id));
	}

	evalscripts.push(id);
	var scriptNode = document.createElement("script");
	scriptNode.type = "text/javascript";
	scriptNode.id = id;
	scriptNode.charset = charset ? charset : (BROWSER.firefox ? document.characterSet : document.charset);
	try {
		if(src) {
			scriptNode.src = src;
			scriptNode.onloadDone = false;
			scriptNode.onload = function () {
				scriptNode.onloadDone = true;
				JSLOADED[src] = 1;
			};
			scriptNode.onreadystatechange = function () {
				if((scriptNode.readyState == 'loaded' || scriptNode.readyState == 'complete') && !scriptNode.onloadDone) {
					scriptNode.onloadDone = true;
					JSLOADED[src] = 1;
				}
			};
		} else if(text){
			scriptNode.text = text;
		}
		document.getElementsByTagName('head')[0].appendChild(scriptNode);
	} catch(e) {}
}

function _ajaxupdateevents(obj, tagName) {
	tagName = tagName ? tagName : 'A';
	var objs = obj.getElementsByTagName(tagName);
	for(k in objs) {
		var o = objs[k];
		ajaxupdateevent(o);
	}
}

function _ajaxupdateevent(o) {
	if(typeof o == 'object' && o.getAttribute) {
		if(o.getAttribute('ajaxtarget')) {
			if(!o.id) o.id = Math.random();
			var ajaxevent = o.getAttribute('ajaxevent') ? o.getAttribute('ajaxevent') : 'click';
			var ajaxurl = o.getAttribute('ajaxurl') ? o.getAttribute('ajaxurl') : o.href;
			_attachEvent(o, ajaxevent, newfunction('ajaxget', ajaxurl, o.getAttribute('ajaxtarget'), o.getAttribute('ajaxwaitid'), o.getAttribute('ajaxloading'), o.getAttribute('ajaxdisplay')));
			if(o.getAttribute('ajaxfunc')) {
				o.getAttribute('ajaxfunc').match(/(\w+)\((.+?)\)/);
				_attachEvent(o, ajaxevent, newfunction(RegExp.$1, RegExp.$2));
			}
		}
	}
}

function _ajaxinnerhtml(showid, s) {
	if(showid.tagName != 'TBODY') {
		showid.innerHTML = s;
	} else {
		while(showid.firstChild) {
			showid.firstChild.parentNode.removeChild(showid.firstChild);
		}
		var div1 = document.createElement('DIV');
		div1.id = showid.id+'_div';
		div1.innerHTML = '<table><tbody id="'+showid.id+'_tbody">'+s+'</tbody></table>';
		$('append_parent').appendChild(div1);
		var trs = div1.getElementsByTagName('TR');
		var l = trs.length;
		for(var i=0; i<l; i++) {
			showid.appendChild(trs[0]);
		}
		var inputs = div1.getElementsByTagName('INPUT');
		var l = inputs.length;
		for(var i=0; i<l; i++) {
			showid.appendChild(inputs[0]);
		}
		div1.parentNode.removeChild(div1);
	}
}