89 lines
3.7 KiB
JavaScript
89 lines
3.7 KiB
JavaScript
var CLodopJsState;
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//====加载C-Lodop的过程(用script元素动态引用主文件CLodopfuncs.js)====
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function loadCLodop() {
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if (CLodopJsState == "loading" || CLodopJsState == "complete")
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return;
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CLodopJsState = "loading";
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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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var JS2 = document.createElement("script");
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var JS3 = document.createElement("script");
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//优先调用本地(Localhost)8000端口服务：
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JS1.src = "http://localhost:8000/CLodopfuncs.js?priority=2";
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//如果失败，则调用本地18000端口：
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JS2.src = "http://localhost:18000/CLodopfuncs.js?priority=1";
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//最后如本地无C-Lodop时，则演示通过本服务远程打印：
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// JS3.src = "/app/shop/view/public/js/CLodopfuncs.js";
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JS1.onload = JS2.onload = JS3.onload = function() {CLodopJsState = "complete";}
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JS1.onerror = JS2.onerror = JS3.onerror = function(evt) {CLodopJsState = "complete";}
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head.insertBefore(JS1, head.firstChild);
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head.insertBefore(JS2, head.firstChild);
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head.insertBefore(JS3, head.firstChild);
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}
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//本例演示所有浏览器都调用C-Lodop:
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function needCLodop() {
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return true;
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}
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//执行加载:
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if (needCLodop()) {
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loadCLodop();
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}
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//====获取LODOP对象的主过程：====
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function getLodop(oOBJECT, oEMBED) {
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var LODOP;
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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.zip' target='_self'>执行升级</a>,升级后请刷新页面。</font>";
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try {
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try {
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LODOP = getCLodop(); //获得主对象（getCLodop是在CLodopfuncs.js定义的）
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} catch (err) {}
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// if (!LODOP && CLodopJsState !== "complete") {
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// if (CLodopJsState == "loading")
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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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// else
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// alert("没有加载CLodop的主js，请先调用loadCLodop过程.");
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// return;
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// }
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if (!LODOP) {
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// document.body.innerHTML = strCLodopInstall_1 + (CLodopIsLocal ? strCLodopInstall_2 : "") + strCLodopInstall_3 + document.body.innerHTML;
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layer.open({
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type: 1,
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area: ['450px'],
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content: "Web打印服务CLodop未安装启动，点击这里<a class='text-color' href='http://www.lodop.net/download.html' target='_black'>去下载安装</a><br />（若此前已安装过，可<a class='text-color' href='CLodop.protocol:setup' target='_self'>点这里直接再次启动</a>）" //这里content是一个普通的String
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});
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return;
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} else {
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if (CLODOP.CVERSION < "4.0.9.9") {
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layer.open({
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type: 1,
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area: ['450px'],
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content: "Web打印服务CLodop版本过低，需升级，请点击这里<a class='text-color' href='http://www.lodop.net/download.html' target='_black'>去下载安装</a><br />（若此前已安装过，可<a class='text-color' href='CLodop.protocol:setup' target='_self'>点这里直接再次启动</a>）" //这里content是一个普通的String
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});
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return;
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}
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if (oEMBED && oEMBED.parentNode)
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oEMBED.parentNode.removeChild(oEMBED);
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if (oOBJECT && oOBJECT.parentNode)
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oOBJECT.parentNode.removeChild(oOBJECT);
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}
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//清理旧例子的object或embed元素(避免乱提示干扰理解)：
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if (oEMBED && oEMBED.parentNode) oEMBED.parentNode.removeChild(oEMBED);
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if (oOBJECT && oOBJECT.parentNode) oOBJECT.parentNode.removeChild(oOBJECT);
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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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