Various fixes

ReactNativeClient/lib/components/note-body-viewer.js

@@ -0,0 +1,189 @@
+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 };