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mirror of https://github.com/laurent22/joplin.git synced 2024-12-15 09:04:04 +02:00
joplin/ReactNativeClient/lib/components/note-body-viewer.js
2017-07-30 21:51:18 +02:00

189 lines
5.5 KiB
JavaScript

import React, { Component } from 'react';
import { WebView, View } from 'react-native';
import { globalStyle } from 'lib/components/global-style.js';
import { Resource } from 'lib/models/resource.js';
import { shim } from 'lib/shim.js';
import marked from 'lib/marked.js';
const Entities = require('html-entities').AllHtmlEntities;
const htmlentities = (new Entities()).encode;
class NoteBodyViewer extends Component {
constructor() {
super();
this.state = {
resources: {},
}
}
async loadResource(id) {
const resource = await Resource.load(id);
resource.base64 = await shim.readLocalFileBase64(Resource.fullPath(resource));
let newResources = Object.assign({}, this.state.resources);
newResources[id] = resource;
this.setState({ resources: newResources });
}
toggleTickAt(body, index) {
let counter = -1;
while (body.indexOf('- [ ]') >= 0 || body.indexOf('- [X]') >= 0) {
counter++;
body = body.replace(/- \[(X| )\]/, function(v, p1) {
let s = p1 == ' ' ? 'NOTICK' : 'TICK';
if (index == counter) {
s = s == 'NOTICK' ? 'TICK' : 'NOTICK';
}
return '°°JOP°CHECKBOX°' + s + '°°';
});
}
body = body.replace(/°°JOP°CHECKBOX°NOTICK°°/g, '- [ ]');
body = body.replace(/°°JOP°CHECKBOX°TICK°°/g, '- [X]');
return body;
}
markdownToHtml (body, style) {
// https://necolas.github.io/normalize.css/
const normalizeCss = `
html{line-height:1.15;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}body{margin:0}
article,aside,footer,header,nav,section{display:block}h1{font-size:2em;margin:.67em 0}hr{box-sizing:content-box;height:0;overflow:visible}
pre{font-family:monospace,monospace;font-size:1em}a{background-color:transparent;-webkit-text-decoration-skip:objects}
b,strong{font-weight:bolder}small{font-size:80%}img{border-style:none}
`;
const css = `
body {
font-size: ` + style.htmlFontSize + `;
color: ` + style.htmlColor + `;
}
h1 {
font-size: 1.2em;
font-weight: bold;
}
h2 {
font-size: 1em;
font-weight: bold;
}
li {
}
ul {
padding-left: 1em;
}
a.checkbox {
font-size: 1.4em;
position: relative;
top: 0.1em;
text-decoration: none;
color: ` + style.htmlColor + `;
}
table {
border-collapse: collapse;
}
td, th {
border: 1px solid silver;
padding: .5em 1em .5em 1em;
}
hr {
border: 1px solid ` + style.htmlDividerColor + `;
}
img {
width: 100%;
}
`;
let counter = -1;
while (body.indexOf('- [ ]') >= 0 || body.indexOf('- [X]') >= 0) {
body = body.replace(/- \[(X| )\]/, function(v, p1) {
let s = p1 == ' ' ? 'NOTICK' : 'TICK';
counter++;
return '°°JOP°CHECKBOX°' + s + '°' + counter + '°°';
});
}
const renderer = new marked.Renderer();
renderer.link = function (href, title, text) {
if (Resource.isResourceUrl(href)) {
return '[Resource not yet supported: ' + htmlentities(text) + ']';
} else {
const js = "postMessage(" + JSON.stringify(href) + "); return false;";
let output = "<a title='" + htmlentities(title) + "' href='#' onclick='" + js + "'>" + htmlentities(text) + '</a>';
return output;
}
}
renderer.image = (href, title, text) => {
const resourceId = Resource.urlToId(href);
if (!this.state.resources[resourceId]) {
this.loadResource(resourceId);
return '';
}
const r = this.state.resources[resourceId];
if (r.mime == 'image/png' || r.mime == 'image/jpg' || r.mime == 'image/gif') {
const src = 'data:' + r.mime + ';base64,' + r.base64;
let output = '<img title="' + htmlentities(title) + '" src="' + src + '"/>';
return output;
}
return '[Image: ' + htmlentities(r.title) + '(' + htmlentities(r.mime) + ')]';
}
let html = body ? '<style>' + normalizeCss + "\n" + css + '</style>' + marked(body, { gfm: true, breaks: true, renderer: renderer }) : '';
let elementId = 1;
while (html.indexOf('°°JOP°') >= 0) {
html = html.replace(/°°JOP°CHECKBOX°([A-Z]+)°(\d+)°°/, function(v, type, index) {
const js = "postMessage('checkboxclick:" + type + ':' + index + "'); this.textContent = this.textContent == '☐' ? '☑' : '☐'; return false;";
return '<a href="#" onclick="' + js + '" class="checkbox">' + (type == 'NOTICK' ? '☐' : '☑') + '</a>';
});
}
let scriptHtml = '<script>document.body.scrollTop = ' + this.bodyScrollTop_ + ';</script>';
html = '<body onscroll="postMessage(\'bodyscroll:\' + document.body.scrollTop);">' + html + scriptHtml + '</body>';
// console.info(html);
return html;
}
render() {
const note = this.props.note;
const style = this.props.style;
const onCheckboxChange = this.props.onCheckboxChange;
return (
<View style={style}>
<WebView
source={{ html: this.markdownToHtml(note ? note.body : '', globalStyle) }}
onMessage={(event) => {
let msg = event.nativeEvent.data;
//reg.logger().info('postMessage received: ' + msg);
if (msg.indexOf('checkboxclick:') === 0) {
msg = msg.split(':');
let index = Number(msg[msg.length - 1]);
let currentState = msg[msg.length - 2]; // Not really needed but keep it anyway
const newBody = this.toggleTickAt(note.body, index);
if (onCheckboxChange) onCheckboxChange(newBody);
} else if (msg.indexOf('bodyscroll:') === 0) {
msg = msg.split(':');
this.bodyScrollTop_ = Number(msg[1]);
} else {
Linking.openURL(msg);
}
}}
/>
</View>
);
}
}
export { NoteBodyViewer };