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//==本JS是加载Lodop插件或Web打印服务CLodop/Lodop7的综合示例，可直接使用，建议理解后融入自己程序==
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//用双端口加载主JS文件Lodop.js(或CLodopfuncs.js兼容老版本)以防其中某端口被占:
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var MainJS ="CLodopfuncs.js",
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URL_WS1 = "ws://localhost:8000/"+MainJS, //ws用8000/18000
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URL_WS2 = "ws://localhost:18000/"+MainJS,
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URL_HTTP1 = "http://localhost:8000/"+MainJS, //http用8000/18000
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URL_HTTP2 = "http://localhost:18000/"+MainJS,
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URL_HTTP3 = "https://localhost.lodop.net:8443/"+MainJS; //https用8000/8443
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var CreatedOKLodopObject, CLodopIsLocal, LoadJsState;
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//==判断是否需要CLodop(那些不支持插件的浏览器):==
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function needCLodop() {
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try {
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var ua = navigator.userAgent;
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if (ua.match(/Windows\sPhone/i) ||
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ua.match(/iPhone|iPod|iPad/i) ||
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ua.match(/Android/i) ||
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ua.match(/Edge\D?\d+/i))
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return true;
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var verTrident = ua.match(/Trident\D?\d+/i);
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var verIE = ua.match(/MSIE\D?\d+/i);
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var verOPR = ua.match(/OPR\D?\d+/i);
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var verFF = ua.match(/Firefox\D?\d+/i);
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var x64 = ua.match(/x64/i);
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if ((!verTrident) && (!verIE) && (x64)) return true;
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else if (verFF) {
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verFF = verFF[0].match(/\d+/);
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if ((verFF[0] >= 41) || (x64)) return true;
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} else if (verOPR) {
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verOPR = verOPR[0].match(/\d+/);
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if (verOPR[0] >= 32) return true;
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} else if ((!verTrident) && (!verIE)) {
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var verChrome = ua.match(/Chrome\D?\d+/i);
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if (verChrome) {
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verChrome = verChrome[0].match(/\d+/);
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if (verChrome[0] >= 41) return true;
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}
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}
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return true;
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} catch (err) {
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return true;
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}
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}
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//==检查加载成功与否，如没成功则用http(s)再试==
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//==低版本CLODOP6.561/Lodop7.043及前)用本方法==
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function checkOrTryHttp() {
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if (window.getCLodop) {
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LoadJsState = "complete";
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return true;
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}
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if (LoadJsState == "loadingB" || LoadJsState == "complete") return;
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LoadJsState = "loadingB";
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var head = document.head || document.getElementsByTagName("head")[0] || document.documentElement;
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var JS1 = document.createElement("script")
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,JS2 = document.createElement("script")
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,JS3 = document.createElement("script");
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JS1.src = URL_HTTP1;
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JS2.src = URL_HTTP2;
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JS3.src = URL_HTTP3;
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JS1.onload = JS2.onload = JS3.onload = JS2.onerror = JS3.onerror=function(){LoadJsState = "complete";}
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JS1.onerror = function(e) {
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if (window.location.protocol !== 'https:')
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head.insertBefore(JS2, head.firstChild); else
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head.insertBefore(JS3, head.firstChild);
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}
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head.insertBefore(JS1,head.firstChild);
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}
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//==加载Lodop对象的主过程:==
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(function loadCLodop(){
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if (!needCLodop()) return;
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CLodopIsLocal = !!((URL_WS1 + URL_WS2).match(/\/\/localhost|\/\/127.0.0./i));
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LoadJsState = "loadingA";
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if (!window.WebSocket && window.MozWebSocket) window.WebSocket=window.MozWebSocket;
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//ws方式速度快(小于200ms)且可避免CORS错误,但要求Lodop版本足够新:
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try {
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var WSK1=new WebSocket(URL_WS1);
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WSK1.onopen = function(e) { setTimeout("checkOrTryHttp();",200); }
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WSK1.onmessage = function(e) {if (!window.getCLodop) eval(e.data);}
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WSK1.onerror = function(e) {
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var WSK2=new WebSocket(URL_WS2);
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WSK2.onopen = function(e) {setTimeout("checkOrTryHttp();",200);}
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WSK2.onmessage = function(e) {if (!window.getCLodop) eval(e.data);}
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WSK2.onerror= function(e) {checkOrTryHttp();}
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}
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} catch(e){
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checkOrTryHttp();
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}
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})();
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//==获取LODOP对象主过程,判断是否安装、需否升级:==
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function getLodop(oOBJECT, oEMBED) {
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var strFontTag = "<br><font color='#FF00FF'>打印控件";
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var strLodopInstall = strFontTag + "未安装!点击这里<a href='install_lodop32.exe' target='_self'>执行安装</a>";
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var strLodopUpdate = strFontTag + "需要升级!点击这里<a href='install_lodop32.exe' target='_self'>执行升级</a>";
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var strLodop64Install = strFontTag + "未安装!点击这里<a href='install_lodop64.exe' target='_self'>执行安装</a>";
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var strLodop64Update = strFontTag + "需要升级!点击这里<a href='install_lodop64.exe' target='_self'>执行升级</a>";
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var strCLodopInstallA = "<br><font color='#FF00FF'>Web打印服务CLodop未安装启动，点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>下载执行安装</a>";
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var strCLodopInstallB = "<br>（若此前已安装过，可<a href='CLodop.protocol:setup' target='_self'>点这里直接再次启动</a>）";
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var strCLodopUpdate = "<br><font color='#FF00FF'>Web打印服务CLodop需升级!点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>执行升级</a>";
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var strLodop7FontTag = "<br><font color='#FF00FF'>Web打印服务Lodop7";
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var strLodop7HrefX86 = "点击这里<a href='Lodop7_Linux_X86_64.tar.gz' target='_self'>下载安装</a>(下载后解压，点击lodop文件开始执行)";
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var strLodop7HrefARM = "点击这里<a href='Lodop7_Linux_ARM64.tar.gz' target='_self'>下载安装</a>(下载后解压，点击lodop文件开始执行)";
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var strLodop7Install_X86 = strLodop7FontTag + "未安装启动，" + strLodop7HrefX86;
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var strLodop7Install_ARM = strLodop7FontTag + "未安装启动，" + strLodop7HrefARM;
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var strLodop7Update_X86 = strLodop7FontTag + "需升级，" + strLodop7HrefX86;
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var strLodop7Update_ARM = strLodop7FontTag + "需升级，" + strLodop7HrefARM;
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var strInstallOK = "，成功后请刷新本页面或重启浏览器。</font>";
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var LODOP;
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try {
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var isWinIE = (/MSIE/i.test(navigator.userAgent)) || (/Trident/i.test(navigator.userAgent));
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var isWinIE64 = isWinIE && (/x64/i.test(navigator.userAgent));
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var isLinuxX86 = (/Linux/i.test(navigator.platform)) && (/x86/i.test(navigator.platform));
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var isLinuxARM = (/Linux/i.test(navigator.platform)) && (/aarch/i.test(navigator.platform));
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if (needCLodop() || isLinuxX86 || isLinuxARM) {
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try {
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LODOP = window.getCLodop();
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} catch (err) {}
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if (!LODOP && LoadJsState !== "complete") {
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if (!LoadJsState)
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alert("未曾加载Lodop主JS文件，请先调用loadCLodop过程."); else
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alert("网页还没下载完毕，请稍等一下再操作.");
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return;
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}
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var strAlertMessage;
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if (!LODOP) {
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if (isLinuxX86)
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strAlertMessage = strLodop7Install_X86;
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else if (isLinuxARM)
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strAlertMessage = strLodop7Install_ARM;
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else
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strAlertMessage = strCLodopInstallA + (CLodopIsLocal ? strCLodopInstallB : "");
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document.body.innerHTML = strAlertMessage + strInstallOK + document.body.innerHTML;
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return;
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} else {
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if (isLinuxX86 && LODOP.CVERSION < "7.0.4.3")
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strAlertMessage = strLodop7Update_X86;
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else if (isLinuxARM && LODOP.CVERSION < "7.0.4.3")
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strAlertMessage = strLodop7Update_ARM;
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else if (CLODOP.CVERSION < "6.5.7.1")
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strAlertMessage = strCLodopUpdate;
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if (strAlertMessage)
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document.body.innerHTML = strAlertMessage + strInstallOK + document.body.innerHTML;
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}
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} else {
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//==如果页面有Lodop插件就直接使用,否则新建:==
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if (oOBJECT || oEMBED) {
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if (isWinIE)
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LODOP = oOBJECT;
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else
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LODOP = oEMBED;
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} else if (!CreatedOKLodopObject) {
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LODOP = document.createElement("object");
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LODOP.setAttribute("width", 0);
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LODOP.setAttribute("height", 0);
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LODOP.setAttribute("style", "position:absolute;left:0px;top:-100px;width:0px;height:0px;");
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if (isWinIE)
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LODOP.setAttribute("classid", "clsid:2105C259-1E0C-4534-8141-A753534CB4CA");
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else
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LODOP.setAttribute("type", "application/x-print-lodop");
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document.documentElement.appendChild(LODOP);
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CreatedOKLodopObject = LODOP;
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} else
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LODOP = CreatedOKLodopObject;
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//==Lodop插件未安装时提示下载地址:==
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if ((!LODOP) || (!LODOP.VERSION)) {
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document.body.innerHTML = (isWinIE64 ? strLodop64Install : strLodopInstall) + strInstallOK + document.body.innerHTML;
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return LODOP;
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}
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if (LODOP.VERSION < "6.2.2.6") {
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document.body.innerHTML = (isWinIE64 ? strLodop64Update : strLodopUpdate) + strInstallOK + document.body.innerHTML;
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}
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}
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//===如下空白位置适合调用统一功能(如注册语句、语言选择等):=======================
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//===============================================================================
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return LODOP;
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} catch (err) {
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alert("getLodop出错:" + err);
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}
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}
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export { getLodop };
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