|
const isIE = () =>{
|
if (!!window.ActiveXobject || "ActiveXObject" in window) {
|
return true;
|
} else {
|
return false;
|
}
|
}
|
/**
|
* 判断是否是IE11
|
* @returns boolean
|
*/
|
const isIE11 = () => {
|
if((/Trident\/7\./).test(navigator.userAgent)) {
|
return true;
|
} else {
|
return false;
|
}
|
}
|
const isRemove = (dom) => {
|
if (isIE() || isIE11()) {
|
dom.removeNode(true)
|
} else {
|
dom.remove()
|
}
|
return dom
|
}
|
export default class {
|
constructor(option) {
|
|
this.standards = {
|
strict: 'strict',
|
loose: 'loose',
|
html5: 'html5'
|
};
|
this.previewBody = null;
|
this.close = null;
|
this.previewBodyUtilPrintBtn = null;
|
this.selectArray = []; // 存储select的
|
this.counter = 0;
|
this.settings = {
|
standard: this.standards.html5,
|
};
|
Object.assign(this.settings, option);
|
this.init();
|
}
|
init () {
|
this.counter++;
|
this.settings.id = `printArea_${this.counter}`;
|
let url = ''
|
if (this.settings.url && !this.settings.asyncUrl) {
|
url = this.settings.url
|
}
|
let _this = this
|
// 如果是异步的
|
if (this.settings.asyncUrl) {
|
|
_this.settings.asyncUrl(function (url) {
|
let PrintAreaWindow = _this.getPrintWindow(url); // 创建iframe
|
if (_this.settings.preview) {
|
// 打开预览弹窗
|
_this.previewIfrmaeLoad()
|
} else {
|
// 直接打印
|
_this.print(PrintAreaWindow);
|
}
|
}, _this.settings.vue)
|
return
|
}
|
let PrintAreaWindow = this.getPrintWindow(url); // 创建iframe
|
|
if (!this.settings.url) {
|
this.write(PrintAreaWindow.doc); // 写入内容
|
}
|
|
if (this.settings.preview) {
|
// 打开预览弹窗
|
this.previewIfrmaeLoad()
|
} else {
|
// 直接打印
|
this.print(PrintAreaWindow);
|
}
|
}
|
addEvent (element, type, callback) {
|
if (element.addEventListener) {
|
element.addEventListener(type, callback, false);
|
} else if (element.attachEvent) {
|
element.attachEvent('on' + type, callback);
|
} else {
|
element['on' + type] = callback;
|
}
|
}
|
previewIfrmaeLoad () {
|
let box = document.getElementById('vue-pirnt-nb-previewBox')
|
|
if (box) {
|
let _this = this
|
let iframe = box.querySelector('iframe')
|
this.settings.previewBeforeOpenCallback()
|
this.addEvent(iframe, 'load', function () {
|
_this.previewBoxShow()
|
_this.removeCanvasImg()
|
_this.settings.previewOpenCallback()
|
})
|
|
this.addEvent(box.querySelector('.previewBodyUtilPrintBtn'), 'click', function () {
|
_this.settings.beforeOpenCallback()
|
_this.settings.openCallback();
|
iframe.contentWindow.print();
|
_this.settings.closeCallback()
|
})
|
}
|
}
|
// 删除所有canva转换的图片
|
removeCanvasImg () {
|
let _this = this
|
try {
|
if (_this.elsdom) {
|
// 删除canva转变图片的dom节点
|
let canvasList = _this.elsdom.querySelectorAll('.canvasImg')
|
for (let i = 0; i < canvasList.length; i++) {
|
isRemove(canvasList[i])
|
}
|
}
|
} catch (e) {
|
console.log(e);
|
}
|
}
|
print (ifrmae) {
|
var _this = this;
|
let iframe = document.getElementById(this.settings.id) || ifrmae.f;
|
let iframeWin = document.getElementById(this.settings.id).contentWindow || ifrmae.f.contentWindow;
|
var _loaded = function () {
|
|
iframeWin.focus();
|
_this.settings.openCallback();
|
iframeWin.print();
|
isRemove(iframe)
|
_this.settings.closeCallback()
|
_this.removeCanvasImg()
|
}
|
_this.settings.beforeOpenCallback()
|
_this.addEvent(iframe, 'load', function () {
|
_loaded()
|
})
|
|
}
|
write (PADocument) {
|
PADocument.open();
|
PADocument.write(`${this.docType()}<html>${this.getHead()}${this.getBody()}</html>`);
|
PADocument.close();
|
|
}
|
docType () {
|
if (this.settings.standard === this.standards.html5) {
|
return '<!DOCTYPE html>';
|
}
|
var transitional = this.settings.standard === this.standards.loose ? ' Transitional' : '';
|
var dtd = this.settings.standard === this.standards.loose ? 'loose' : 'strict';
|
|
return `<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01${transitional}//EN" "http://www.w3.org/TR/html4/${dtd}.dtd">`;
|
}
|
getHead () {
|
let extraHead = '';
|
let links = '';
|
let style = '';
|
if (this.settings.extraHead) {
|
this.settings.extraHead.replace(/([^,]+)/g, (m) => {
|
extraHead += m;
|
});
|
}
|
// 复制所有link标签
|
[].forEach.call(document.querySelectorAll('link'), function (item) {
|
if (item.href.indexOf('.css') >= 0) {
|
links += `<link type="text/css" rel="stylesheet" href="${item.href}" >`;
|
}
|
});
|
// 循环获取style标签的样式
|
let domStyle = document.styleSheets;
|
if (domStyle && domStyle.length > 0) {
|
for (let i = 0; i < domStyle.length; i++) {
|
try {
|
if (domStyle[i].cssRules || domStyle[i].rules) {
|
let rules = domStyle[i].cssRules || domStyle[i].rules;
|
for (let b = 0; b < rules.length; b++) {
|
style += rules[b].cssText;
|
}
|
}
|
} catch (e) {
|
console.log(domStyle[i].href + e);
|
}
|
}
|
}
|
|
if (this.settings.extraCss) {
|
this.settings.extraCss.replace(/([^,\s]+)/g, (m) => {
|
links += `<link type="text/css" rel="stylesheet" href="${m}">`;
|
});
|
|
}
|
|
return `<head><title>${this.settings.popTitle}</title>${extraHead}${links}<style type="text/css">${style}</style></head>`;
|
}
|
|
getBody () {
|
let ids = this.settings.ids;
|
ids = ids.replace(new RegExp("#", "g"), '');
|
this.settings.beforeEntryIframe();
|
this.elsdom = this.beforeHanler(document.getElementById(ids));
|
let ele = this.getFormData(this.elsdom);
|
let htm = ele.outerHTML;
|
return '<body>' + htm + '</body>';
|
}
|
// 处理canva转成图片
|
beforeHanler (elsdom) {
|
let canvasList = elsdom.querySelectorAll('canvas');
|
// canvas转换png图片
|
for (let i = 0; i < canvasList.length; i++) {
|
if (!canvasList[i].style.display) {
|
let _parent = canvasList[i].parentNode
|
let _canvasUrl = canvasList[i].toDataURL('image/png')
|
let _img = new Image()
|
_img.className = 'canvasImg'
|
_img.style.display = 'none'
|
_img.src = _canvasUrl
|
_parent.appendChild(_img)
|
}
|
}
|
return elsdom
|
}
|
// 根据type去处理form表单
|
getFormData (ele) {
|
let copy = ele.cloneNode(true);
|
let copiedInputs = copy.querySelectorAll('input,select,textarea');
|
let canvasImgList = copy.querySelectorAll('.canvasImg,canvas');
|
let selectCount = -1;
|
// 处理所有canvas
|
for (let i = 0; i < canvasImgList.length; i++) {
|
let _parent = canvasImgList[i].parentNode
|
let item = canvasImgList[i]
|
// 删除克隆后的canvas节点
|
if (item.tagName.toLowerCase() === 'canvas') {
|
_parent.removeChild(item)
|
} else {
|
item.style.display = 'block'
|
}
|
}
|
// 处理所有输入框
|
for (let i = 0; i < copiedInputs.length; i++) {
|
let item = copiedInputs[i];
|
let typeInput = item.getAttribute('type');
|
let copiedInput = copiedInputs[i];
|
// 获取select标签
|
if (!typeInput) {
|
typeInput = item.tagName === 'SELECT' ? 'select' : item.tagName === 'TEXTAREA' ? 'textarea' : '';
|
}
|
// 处理input框
|
if (item.tagName === 'INPUT') {
|
// 除了单选框 多选框比较特别
|
if (typeInput === 'radio' || typeInput === 'checkbox') {
|
if (item.checked) {
|
copiedInput.setAttribute('checked', item.checked);
|
}
|
|
} else {
|
copiedInput.value = item.value;
|
copiedInput.setAttribute('value', item.value);
|
}
|
// 处理select
|
} else if (typeInput === 'select') {
|
|
selectCount++;
|
for (let b = 0; b < ele.querySelectorAll('select').length; b++) {
|
let select = ele.querySelectorAll('select')[b]; // 获取原始层每一个select
|
!select.getAttribute('newbs') && select.setAttribute('newbs', b) // 添加标识
|
if (select.getAttribute('newbs') == selectCount) {
|
let opSelectedIndex = ele.querySelectorAll('select')[selectCount].selectedIndex;
|
item.options[opSelectedIndex].setAttribute('selected', true);
|
|
}
|
}
|
// 处理textarea
|
} else {
|
copiedInput.innerHTML = item.value;
|
copiedInput.setAttribute('html', item.value);
|
}
|
}
|
|
return copy;
|
}
|
getPrintWindow (url) {
|
var f = this.Iframe(url);
|
return {
|
f: f,
|
win: f.contentWindow || f,
|
doc: f.doc
|
};
|
}
|
previewBoxShow () {
|
let box = document.getElementById('vue-pirnt-nb-previewBox')
|
if (box) {
|
document.querySelector('html').setAttribute('style', 'overflow: hidden')
|
box.style.display = 'block'
|
}
|
}
|
|
previewBoxHide () {
|
let box = document.getElementById('vue-pirnt-nb-previewBox')
|
if (box) {
|
document.querySelector('html').setAttribute('style', 'overflow: visible;')
|
|
box.querySelector('iframe') && isRemove(box.querySelector('iframe'))
|
box.style.display = 'none'
|
}
|
}
|
previewBox () {
|
|
let box = document.getElementById('vue-pirnt-nb-previewBox')
|
let previewBodyClass = 'previewBody'
|
if (box) {
|
box.querySelector('iframe') && isRemove(box.querySelector('iframe'))
|
return {
|
close: box.querySelector('.previewClose'),
|
previewBody: box.querySelector(`.${previewBodyClass}`)
|
}
|
}
|
let previewContent = document.createElement('div');
|
previewContent.setAttribute('id', "vue-pirnt-nb-previewBox")
|
previewContent.setAttribute('style', 'position: fixed;top: 0px;left: 0px;width: 100%;height: 100%;background: white;display:none')
|
previewContent.style.zIndex = this.settings.zIndex
|
// 打印预览弹窗的header
|
let previewHeader = document.createElement('div');
|
previewHeader.setAttribute('class', "previewHeader")
|
previewHeader.setAttribute('style', "padding: 5px 20px;")
|
previewHeader.innerHTML = this.settings.previewTitle
|
previewContent.appendChild(previewHeader)
|
// close关闭按钮
|
this.close = document.createElement('div');
|
let close = this.close
|
close.setAttribute('class', "previewClose")
|
close.setAttribute('style', "position: absolute;top: 5px;right: 20px;width: 25px;height: 20px;cursor: pointer;")
|
let closeBefore = document.createElement('div');
|
let closeAfter = document.createElement('div');
|
closeBefore.setAttribute('class', "closeBefore")
|
closeBefore.setAttribute('style', "position: absolute;width: 3px;height: 100%;background: #040404;transform: rotate(45deg); top: 0px;left: 50%;")
|
closeAfter.setAttribute('class', "closeAfter")
|
closeAfter.setAttribute('style', "position: absolute;width: 3px;height: 100%;background: #040404;transform: rotate(-45deg); top: 0px;left: 50%;")
|
close.appendChild(closeBefore)
|
close.appendChild(closeAfter)
|
previewHeader.appendChild(close)
|
|
// 打印预览弹窗的body
|
this.previewBody = document.createElement('div');
|
let previewBody = this.previewBody
|
previewBody.setAttribute('class', previewBodyClass)
|
previewBody.setAttribute('style', "display: flex;flex-direction: column; height: 100%;")
|
previewContent.appendChild(previewBody)
|
// 打印预览弹窗的body的工具栏
|
let previewBodyUtil = document.createElement('div');
|
previewBodyUtil.setAttribute('class', "previewBodyUtil")
|
previewBodyUtil.setAttribute('style', "height: 32px;background: #474747;position: relative;")
|
previewBody.appendChild(previewBodyUtil)
|
// 打印的按钮
|
this.previewBodyUtilPrintBtn = document.createElement('div');
|
let previewBodyUtilPrintBtn = this.previewBodyUtilPrintBtn
|
previewBodyUtilPrintBtn.setAttribute('class', 'previewBodyUtilPrintBtn')
|
previewBodyUtilPrintBtn.innerHTML = this.settings.previewPrintBtnLabel
|
previewBodyUtilPrintBtn.setAttribute('style', 'position: absolute;padding: 2px 10px;margin-top: 3px;left: 24px;font-size: 14px;color: white;cursor: pointer;background-color: rgba(0,0,0,.12);background-image: linear-gradient(hsla(0,0%,100%,.05),hsla(0,0%,100%,0));background-clip: padding-box;border: 1px solid rgba(0,0,0,.35);border-color: rgba(0,0,0,.32) rgba(0,0,0,.38) rgba(0,0,0,.42);box-shadow: inset 0 1px 0 hsla(0,0%,100%,.05), inset 0 0 1px hsla(0,0%,100%,.15), 0 1px 0 hsla(0,0%,100%,.05);')
|
previewBodyUtil.appendChild(previewBodyUtilPrintBtn)
|
|
// 添加整个预览到body
|
document.body.appendChild(previewContent);
|
|
return {
|
close: this.close,
|
previewBody: this.previewBody
|
}
|
}
|
iframeBox (frameId, url) {
|
let iframe = document.createElement('iframe');
|
iframe.style.border = '0px';
|
iframe.style.position = 'absolute';
|
iframe.style.width = '0px';
|
iframe.style.height = '0px';
|
iframe.style.right = '0px';
|
iframe.style.top = '0px';
|
iframe.setAttribute('id', frameId);
|
iframe.setAttribute('src', url);
|
|
return iframe
|
}
|
Iframe (url) {
|
let frameId = this.settings.id;
|
// 局部打印 用当前的时间做ifrmae的url
|
url = !url ? new Date().getTime() : url
|
let _this = this
|
|
let iframe = this.iframeBox(frameId, url)
|
|
// let that = this
|
try {
|
// 直接打印 不预览
|
if (!this.settings.preview) {
|
document.body.appendChild(iframe);
|
|
} else {
|
iframe.setAttribute('style', 'border: 0px;flex: 1;')
|
// 预览打印
|
let previewBox = this.previewBox()
|
let previewBody = previewBox.previewBody
|
let close = previewBox.close
|
// 添加ifrmae到预览弹窗
|
previewBody.appendChild(iframe);
|
this.addEvent(close, 'click', function () {
|
_this.previewBoxHide()
|
})
|
}
|
|
iframe.doc = null;
|
iframe.doc = iframe.contentDocument ? iframe.contentDocument : (iframe.contentWindow ? iframe.contentWindow.document : iframe.document);
|
} catch (e) {
|
throw new Error(e + '. iframes may not be supported in this browser.');
|
}
|
if (iframe.doc == null) {
|
throw new Error('Cannot find document.');
|
}
|
|
return iframe;
|
}
|
}
|
