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- /***** iframe打印
- * @param dom 打印区域的class, id
- * @param options.margin 控制页眉页脚, 默认 4mm
- * @param options.padding 打印边距, 默认 '0 0'
- * @method options.afterprint 打印结束后回调
- * @method options.cancel 取消打印后回调
- *
- * **/
- const Print = function(dom, options) {
- if (!(this instanceof Print)) return new Print(dom, options);
-
- this.options = this.extend(
- {
- noPrint: ".no-print",
- },
- options
- );
-
- if (typeof dom === "string") {
- this.dom = document.querySelector(dom);
- } else {
- this.isDOM(dom);
- this.dom = this.isDOM(dom) ? dom : dom.$el;
- }
-
- this.init();
- };
- Print.prototype = {
- init: function() {
- var content = this.getStyle() + this.getHtml();
- this.writeIframe(content);
- },
- extend: function(obj, obj2) {
- for (var k in obj2) {
- obj[k] = obj2[k];
- }
- return obj;
- },
-
- getStyle: function() {
- var str = "",
- styles = document.querySelectorAll("style,link");
- for (var i = 0; i < styles.length; i++) {
- str += styles[i].outerHTML;
- }
-
-
-
- str +=
- "<style>" +
- (this.options.noPrint ? this.options.noPrint : ".no-print") +
- "{display:none;}</style>";
-
- str += `<style>
- @media print {
- @page { margin: ${this.options.margin || '4mm'}; padding: ${this.options.padding || '0 0'}; width:210mm;height:290mm}
- body {
- -webkit-print-color-adjust:exact;-moz-print-color-adjust:exact;-ms-print-color-adjust:exact;print-color-adjust:exact;
- }
- }
- </style>`;
-
-
- return str;
- },
-
- getHtml: function() {
- var inputs = document.querySelectorAll("input");
- var textareas = document.querySelectorAll("textarea");
- var selects = document.querySelectorAll("select");
-
- for (var k = 0; k < inputs.length; k++) {
- if (inputs[k].type == "checkbox" || inputs[k].type == "radio") {
- if (inputs[k].checked == true) {
- inputs[k].setAttribute("checked", "checked");
- } else {
- inputs[k].removeAttribute("checked");
- }
- } else if (inputs[k].type == "text") {
- inputs[k].setAttribute("value", inputs[k].value);
- } else {
- inputs[k].setAttribute("value", inputs[k].value);
- }
- }
-
- for (var k2 = 0; k2 < textareas.length; k2++) {
- if (textareas[k2].type == "textarea") {
- textareas[k2].innerHTML = textareas[k2].value;
- }
- }
-
- for (var k3 = 0; k3 < selects.length; k3++) {
- if (selects[k3].type == "select-one") {
- var child = selects[k3].children;
- for (var i in child) {
- if (child[i].tagName == "OPTION") {
- if (child[i].selected == true) {
- child[i].setAttribute("selected", "selected");
- } else {
- child[i].removeAttribute("selected");
- }
- }
- }
- }
- }
-
- return this.dom.outerHTML;
- },
-
- writeIframe: function(content) {
- var w,
- doc,
- iframe = document.createElement("iframe"),
- f = document.body.appendChild(iframe);
- iframe.id = "myIframe";
- iframe.setAttribute(
- "style",
- "position:absolute;width:0;height:0;top:-10px;left:-10px;"
- );
-
- w = f.contentWindow || f.contentDocument;
- doc = f.contentDocument || f.contentWindow.document;
- doc.open();
- doc.write(content);
- doc.close();
- var _this = this;
-
- iframe.onload = function() {
- w.onbeforeprint = _this.options.beforeprint;
- w.onafterprint = _this.options.afterprint;
- // iframe.contentWindow.print();
- _this.toPrint(w);
- setTimeout(function() {
- document.body.removeChild(iframe);
- }, 100);
- };
- },
-
- toPrint: function(frameWindow) {
- var _t = this;
- try {
- setTimeout(function() {
- frameWindow.focus();
- try {
- if (!frameWindow.document.execCommand("print", false, null)) {
-
- frameWindow.print();
- }
- } catch (e) {
-
- frameWindow.print();
- }
- frameWindow.close();
- typeof _t.options.cancel === "function" && _t.options.cancel();
- frameWindow.onbeforeprint = null;
- frameWindow.onafterprint = null;
- }, 10);
- } catch (err) {
- console.log("err", err);
- }
- },
-
- isDOM:
- typeof HTMLElement === "object"
- ? function(obj) {
- return obj instanceof HTMLElement;
- }
- : function(obj) {
- return (
- obj &&
- typeof obj === "object" &&
- obj.nodeType === 1 &&
- typeof obj.nodeName === "string"
- );
- },
- };
- // export default Print
-
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