/* need mammoth module
*/
var bricks = window.bricks || {};
bricks.DOCXviewer = class extends bricks.VBox {
/*
url:
*/
constructor(opts){
super(opts);
this.bind('on_parent', this.set_url.bind(this));
// schedule_once(this.set_url.bind(this, this.url), 0.2);
}
async set_url(url){
var container = this.dom_element
var hab = new bricks.HttpArrayBuffer();
var ab = await hab.get(this.url);
var result = await mammoth.convertToHtml({ arrayBuffer: ab });
container.innerHTML = result.value;
}
}
function extractBodyContent(htmlString) {
// 正则表达式匹配和之间的内容
const regex = /]*>([\s\S]*?)<\/body>/i;
const matches = htmlString.match(regex);
return matches ? matches[1] : null; // 如果匹配到，返回匹配的内容，否则返回null
}
bricks.EXCELviewer = class extends bricks.VBox {
constructor(opts){
opts.height = "100%",
super(opts);
this.sheets_w = new bricks.HBox({cheight:3, width:'100%'});
this.sheets_w.set_css('scroll');
this.cur_sheetname = null;
this.container = new bricks.Filler({});
this.add_widget(this.container);
this.add_widget(this.sheets_w);
this.bind('on_parent', this.set_url.bind(this));
}
async set_url(url){
this.sheets_w.clear_widgets();
var hab = new bricks.HttpArrayBuffer();
var ab = await hab.get(this.url);
const data = new Uint8Array(ab);
this.workbook = XLSX.read(data, {type: 'array'});
this.workbook.SheetNames.forEach((sheetname, index) => {
var w = new bricks.Text({text:sheetname, wrap:false});
w.set_css('clickable');
w.set_style('padding', '10px');
w.bind('click', this.show_sheet_by_name.bind(this, sheetname, w));
this.sheets_w.add_widget(w);
if (index==0){
this.show_sheet_by_name(this.workbook.SheetNames[0], w);
}
});
}
show_sheet_by_name(sheetname, tw){
if (this.cur_sheetname == sheetname) return;
this.sheets_w.children.forEach(c => c.set_css('selected', true));
tw.set_css('selected');
const x = new bricks.VScrollPanel({width: '100%', height: '100%'});
const sheet = this.workbook.Sheets[sheetname];
// const html = extractBodyContent(XLSX.utils.sheet_to_html(sheet));
const html = XLSX.utils.sheet_to_html(sheet);
x.dom_element.innerHTML = html;
this.container.clear_widgets();
this.container.add_widget(x);
this.cur_sheetname = sheetname;
}
}
bricks.PDFviewer = class extends bricks.VBox {
/*
url:
*/
constructor(opts){
opts.width = '100%';
super(opts);
this.bind('on_parent', this.set_url.bind(this));
}
async set_url(url){
var container = this.dom_element
var hab = new bricks.HttpArrayBuffer();
var ab = await hab.get(this.url);
const task = pdfjsLib.getDocument({ data: ab });
task.promise.then((pdf) => {
this.pdf = pdf;
for (let i = 1; i <= this.pdf.numPages; i++) {
this.pdf.getPage(i).then((page) => {
this.add_page_content(page);
});
}
}).catch((err) => {
console.log('error');
})
}
add_page_content(page){
const scale = 1.5;
const viewport = page.getViewport({ scale });
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
canvas.height = viewport.height;
canvas.width = viewport.width;
page.render({ canvasContext: context, viewport });
var w = new bricks.JsWidget();
w.dom_element.appendChild(canvas);
this.add_widget(w);
if (i < this.pdf.numPages){
w = new bricks.Splitter();
this.add_widget(w)
}
}
}
bricks.Factory.register('DOCXviewer', bricks.DOCXviewer);
bricks.Factory.register('EXCELviewer', bricks.EXCELviewer);
bricks.Factory.register('PDFviewer', bricks.PDFviewer);