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joplin/ElectronClient/app/gui/note-viewer/index.html

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<style>
body {
overflow: hidden;
}
#content {
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overflow-y: auto;
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height: 100%;
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padding-left: 10px;
padding-right: 10px;
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}
</style>
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<div id="hlScriptContainer"></div>
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<div id="content"></div>
<script>
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const { ipcRenderer } = require('electron');
const contentElement = document.getElementById('content');
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// ----------------------------------------------------------------------
// Handle dynamically loading HLJS when a code element is present
// ----------------------------------------------------------------------
let hljsScriptAdded = false;
let hljsLoaded = false;
function loadHljs(callback) {
hljsScriptAdded = true;
const script = document.createElement('script');
script.onload = function () {
hljsLoaded = true;
applyHljs();
};
script.src = 'highlight/highlight.pack.js';
document.getElementById('hlScriptContainer').appendChild(script);
const link = document.createElement('link');
link.rel = 'stylesheet';
// https://ace.c9.io/build/kitchen-sink.html
// https://highlightjs.org/static/demo/
link.href = 'highlight/styles/atom-one-light.css';
document.getElementById('hlScriptContainer').appendChild(link);
}
function loadAndApplyHljs() {
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var codeElements = document.getElementsByClassName('code');
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if (!codeElements.length) return;
if (!hljsScriptAdded) {
this.loadHljs();
return;
}
// If HLJS is not loaded yet, no need to do anything. When it loads
// it will automatically apply the style to all the code elements.
if (hljsLoaded) applyHljs(codeElements);
}
function applyHljs(codeElements) {
if (typeof codeElements === 'undefined') codeElements = document.getElementsByClassName('code');
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for (var i = 0; i < codeElements.length; i++) {
hljs.highlightBlock(codeElements[i]);
}
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}
// ----------------------------------------------------------------------
// / Handle dynamically loading HLJS when a code element is present
// ----------------------------------------------------------------------
ipcRenderer.on('setHtml', (event, html) => {
contentElement.innerHTML = html;
loadAndApplyHljs();
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// A checkbox list is rendered like this by markdown-it:
// <ul>
// <li>
// <p>
// [x] some item
// </p>
// </li>
// ...
// </ul>
// And we need to remove the padding from "p" and the bullet from "ul"
const checkboxes = document.getElementsByClassName('checkbox');
for (let i = 0; i < checkboxes.length; i++) {
const cb = checkboxes[i];
cb.parentElement.style.marginBottom = 0;
const ul = cb.parentElement.parentElement.parentElement;
if (!ul) {
console.warn('Unexpected layout for checkbox');
continue;
}
ul.style.listStyleType = 'none';
}
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});
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let ignoreNextScroll = false;
ipcRenderer.on('setPercentScroll', (event, percent) => {
ignoreNextScroll = true;
contentElement.scrollTop = percent * maxScrollTop();
});
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// function elementMapCoordinates(element) {
// while (true) {
// if (!element) break;
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// const m = element.getAttribute('data-map');
// if (m) return m.split(':');
// element = element.parentElement;
// }
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// return null;
// }
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function maxScrollTop() {
return Math.max(0, contentElement.scrollHeight - contentElement.clientHeight);
}
contentElement.addEventListener('scroll', function(e) {
if (ignoreNextScroll) {
ignoreNextScroll = false;
return;
}
const m = maxScrollTop();
ipcRenderer.sendToHost('percentScroll', m ? contentElement.scrollTop / m : 0);
});
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// Disable drag and drop otherwise it's possible to drop a URL
// on it and it will open in the view as a website.
document.addEventListener('drop', function(e) {
e.preventDefault();
e.stopPropagation();
});
document.addEventListener('dragover', function(e) {
e.preventDefault();
e.stopPropagation();
});
webview.addEventListener('dragover', function(e) {
e.preventDefault();
});
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</script>