前言:其实本来是要做全类型文件预览的,但是一直找不到合适的doc,xlx,ppt预览插件。要是有可以使用的,可以评论推荐给我
我使用的node版本:v18.19.1
参考官网:preview 文件预览 | ran
引入方式:
//安装组件
npm install ranui --save
//在需要的页面引入即可
import 'ranui/button';
import 'ranui/preview';
import 'ranui/style';
//使用方式
<div class="preview-container">
<div id="showPreview" class="preview"></div>
<r-preview :src="url" closeable="false"></r-preview>
</div>
我这里多了个showPreview用来处理ppt的预览,因为他原生的ppt预览是增加一个弹窗,我需要当前页面展示,样式不符合要求,我就修改了,\node_modules\ranui\dist\components\preview\index.js 里对应第一个文件
修改如下:
var __defProp = Object.defineProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __publicField = (obj, key, value) => {
__defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
return value;
};
import { n as noop } from "./index-7913ec46.js";
import "./index-7216d6b0.js";
import { m as message } from "./index-0d5b9435.js";
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const index$2 = "";
const { warning = noop } = message;
const PPTX = "application/vnd.openxmlformats-officedocument.presentationml.presentation";
const PDF = "application/pdf";
const DOCX = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
const XLSX = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
const XLS = "application/vnd.ms-excel";
async function Custom() {
if (typeof document !== "undefined" && !customElements.get("r-preview") && true) {
const { renderPptx } = await import("./index-7b8840f9.js");
const { renderDocx } = await import("./docx-c5d02d8c.js");
const { renderPdf } = await import("./pdf-bdb7818a.js");
const { renderExcel } = await import("./index-c14450a9.js");
const requestUrlToBuffer = (src, options) => {
if (typeof XMLHttpRequest === "undefined") {
throw new Error("XMLHttpRequest is not defined");
}
if (typeof document === "undefined") {
return Promise.reject("document is not defined");
}
return new Promise(function(resolve, reject) {
const xhr = new XMLHttpRequest();
xhr.open(options.method || "GET", src, true);
xhr.responseType = options.responseType || "arraybuffer";
xhr.onload = function() {
if (xhr.status === 200) {
resolve({ success: true, data: xhr.response, message: "" });
} else {
reject({
success: false,
data: xhr.status,
message: `The request status is${xhr.status}`
});
}
};
xhr.onerror = function(e) {
reject({ success: false, data: e, message: `` });
};
xhr.onprogress = (event) => {
options.onProgress && options.onProgress(event);
};
xhr.withCredentials = options.withCredentials || false;
if (options.headers) {
Object.keys(options.headers).forEach(function(key) {
(options == null ? void 0 : options.headers) && xhr.setRequestHeader(key, options.headers[key]);
});
}
xhr.send(options.body);
});
};
const renderPpt = (file, dom) => {
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.readAsArrayBuffer(file);
reader.onload = () => {
var _a;
if (reader.result && dom) {
const param = {
pptx: reader.result,
resultElement: dom
};
(_a = renderPptx(param)) == null ? void 0 : _a.then(() => {
resolve();
});
}
};
reader.onerror = (error) => {
reject(error);
};
reader.onabort = (abort) => {
reject(abort);
};
});
};
const renderWord = (file, dom) => {
return Promise.resolve().then(
() => renderDocx({ buffer: file, bodyContainer: dom })
);
};
const renderFileMap = /* @__PURE__ */ new Map([
[PDF, renderPdf],
[PPTX, renderPpt],
[DOCX, renderWord],
[XLSX, renderExcel],
[XLS, renderExcel]
]);
class CustomElement extends HTMLElement {
constructor() {
super();
__publicField(this, "_loadingText");
__publicField(this, "preview");
__publicField(this, "previewContext");
__publicField(this, "_slot");
__publicField(this, "_div");
__publicField(this, "_loadingElement");
__publicField(this, "createLoading", () => {
this._loadingElement = document.createElement("div");
this._loadingElement.setAttribute("class", "r-preview-loading");
const icon = document.createElement("r-icon");
icon.setAttribute("name", "loading");
icon.setAttribute("size", "100");
icon.setAttribute("color", "#1E90FF");
icon.setAttribute("spin", "");
this._loadingText = document.createElement("div");
this._loadingElement.appendChild(icon);
this._loadingText.setAttribute("class", "r-preview-loading-text");
this._loadingElement.appendChild(this._loadingText);
return this._loadingElement;
});
__publicField(this, "onProgress", (event) => {
const num = event.loaded / event.total * 100;
const progress = Math.min(99, num).toFixed(2) + "%";
if (this._loadingText && this._loadingElement) {
this._loadingText.innerText = `Loading ${progress}`;
if (num >= 100) {
setTimeout(() => {
var _a;
(_a = this.preview) == null ? void 0 : _a.removeChild(this._loadingElement);
}, 300);
}
}
});
__publicField(this, "handleFile", async (file) => {
try {
if (typeof file === "string") {
const { success, data, message: message2 } = await requestUrlToBuffer(file, {
onProgress: this.onProgress,
responseType: "blob"
});
if (success && data) {
file = new File([data], data.name, { type: data.type });
const { type } = file;
const handler = renderFileMap.get(type);
if (handler && this.previewContext) {
if (type === XLSX || type === XLS) {
this.previewContext.style.setProperty("width", "100%");
} else {
this.previewContext.style.setProperty("width", "100%");
}
handler(file, this.previewContext);
}
} else {
warning(message2);
}
}
} catch (error) {
}
});
__publicField(this, "closePreview", () => {
if (this.preview) {
document.body.removeChild(this.preview);
this.preview = void 0;
}
});
__publicField(this, "showPreview", () => {
var _a;
if (this.src) {
if (this.preview) {
this.preview.style.display = "block";
} else {
this.preview = document.createElement("div");
this.preview.setAttribute("class", "r-preview-mask");
this.preview.setAttribute("id", "r-preview-mask");
const previewOption = document.createElement("div");
previewOption.setAttribute("class", "r-preview-options");
if (this.closeable !== "false") {
const previewCloseButton = document.createElement("r-icon");
previewCloseButton.setAttribute(
"class",
"r-preview-options-close"
);
previewCloseButton.setAttribute("name", "close-circle-fill");
previewCloseButton.setAttribute("size", "40");
previewCloseButton.addEventListener("click", this.closePreview);
previewOption.appendChild(previewCloseButton);
}
const previewContain = document.createElement("div");
previewContain.setAttribute("class", "r-preview-contain");
this.previewContext = document.createElement("div");
this.previewContext.setAttribute("class", "r-preview-context");
previewContain.appendChild(this.previewContext);
this.preview.appendChild(previewOption);
(_a = this.preview) == null ? void 0 : _a.appendChild(previewContain);
this._loadingElement = this.createLoading();
this.preview.appendChild(this._loadingElement);
document.getElementById('showPreview').appendChild(this.preview);
// document.body.appendChild(this.preview);
}
this.handleFile(this.src);
}
});
this._div = document.createElement("div");
this.preview = document.getElementById("r-preview-mask");
this._slot = document.createElement("slot");
this._div.appendChild(this._slot);
this._slot.setAttribute("class", "r-preview-slot");
this._div.setAttribute("class", "r-preview");
const shadowRoot = this.attachShadow({ mode: "closed" });
const F7170EE498E0DD32CBDCB63FBA8F75CC = document.createElement("style");
F7170EE498E0DD32CBDCB63FBA8F75CC.textContent = f7170ee498e0dd32cbdcb63fba8f75cc;
shadowRoot.appendChild(F7170EE498E0DD32CBDCB63FBA8F75CC);
shadowRoot.appendChild(this._div);
}
static get observedAttributes() {
return ["src", "closeable"];
}
get label() {
return this.getAttribute("label");
}
set label(value) {
if (value)
this.setAttribute("label", value);
}
get src() {
return this.getAttribute("src");
}
set src(value) {
if (value)
this.setAttribute("src", value);
}
get closeable() {
return this.getAttribute("closeable");
}
set closeable(value) {
if (value)
this.setAttribute("closeable", value);
}
connectedCallback() {
this.preview = document.getElementById("r-preview-mask");
this.addEventListener("click", this.showPreview);
}
disconnectedCallback() {
this.removeEventListener("click", this.showPreview);
}
attributeChangedCallback(name, oldValue, newValue) {
if (newValue !== oldValue) {
if (name === "src" && newValue) {
this.setAttribute("src", newValue);
this.showPreview();
}
}
}
}
customElements.define("r-preview", CustomElement);
}
}
const index = Custom();
const index$1 = /* @__PURE__ */ Object.freeze(/* @__PURE__ */ Object.defineProperty({
__proto__: null,
default: index
}, Symbol.toStringTag, { value: "Module" }));
export {
index as a,
index$1 as i
};
好像是pdf在预览时样式很奇怪:所以pdf我是通过ifream进行预览
<iframe :src="url" class="pdfBox"></iframe>