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mirror of https://github.com/laurent22/joplin.git synced 2024-12-21 09:38:01 +02:00
joplin/ElectronClient/gui/note-viewer/index.html

448 lines
14 KiB
HTML

<!DOCTYPE html>
<html>
<head id="joplin-container-root-head">
<meta charset="UTF-8">
<style>
body {
overflow: hidden;
}
#joplin-container-content {
/* Needs this in case the content contains elements with absolute positioning */
/* Without this they would just stay at a fixed position when scrolling */
position: relative;
overflow-y: auto;
padding-left: 10px;
padding-right: 10px;
/* Note: the height is set via updateBodyHeight(). Setting it here to 100% */
/* won't work with some pages due to the position: relative */
}
mark {
background: #F7D26E;
color: black;
}
.mark-selected {
background: #CF3F00;
color: white;
}
ul ul, ul ol, ol ul, ol ol {
margin-bottom: 0px;
}
</style>
</head>
<body id="joplin-container-body">
<div id="joplin-container-pluginAssetsContainer"></div>
<div id="joplin-container-markScriptContainer"></div>
<div id="joplin-container-content" ondragstart="return false;" ondrop="return false;"></div>
<script src="./lib.js"></script>
<script>
const ipcProxySendToHost = (methodName, arg) => {
window.postMessage({ target: 'main', name: methodName, args: [ arg ] }, '*');
}
let pluginAssetsAdded_ = {};
try {
const contentElement = document.getElementById('joplin-container-content');
const ipc = {};
window.addEventListener('message', webviewLib.logEnabledEventHandler(event => {
// Here we only deal with messages that are sent from the main Electro process to the webview.
if (!event.data || event.data.target !== 'webview') return;
const callName = event.data.name;
const callData = event.data.data;
if (!ipc[callName]) {
console.warn('Missing IPC function:', event.data);
} else {
ipc[callName](callData);
}
}));
// Note: the scroll position source of truth is "percentScroll_". This is easier to manage than scrollTop because
// the scrollTop value depends on the images being loaded or not. For example, if the scrollTop is saved while
// images are being displayed then restored while images are being reloaded, the new scrollTop might be changed
// so that it is not greater than contentHeight. On the other hand, with percentScroll it is possible to restore
// it at any time knowing that it's not going to be changed because the content height has changed.
// To restore percentScroll the "checkScrollIID" interval is used. It constantly resets the scroll position during
// one second after the content has been updated.
//
// ignoreNextScroll is used to differentiate between scroll event from the users and those that are the result
// of programmatically changing scrollTop. We only want to respond to events initiated by the user.
let percentScroll_ = 0;
let checkScrollIID_ = null;
// This variable provides a way to skip scroll events for a certain duration.
// In general, it should be set whenever the scroll value is set explicitely (programmatically)
// so as to differentiate scroll events generated by the user (when scrolling the view) and those
// generated by the application.
let lastScrollEventTime = 0;
function setPercentScroll(percent) {
percentScroll_ = percent;
contentElement.scrollTop = percentScroll_ * maxScrollTop();
}
function percentScroll() {
return percentScroll_;
}
function restorePercentScroll() {
lastScrollEventTime = Date.now();
setPercentScroll(percentScroll_);
}
// Note that this function keeps track of what's been added so as not to add the same CSS files multiple times
// It also means that once an asset has been added it is never removed from the view, which in many case is
// desirable, but still something to keep in mind.
function addPluginAssets(assets) {
if (!assets) return;
const pluginAssetsContainer = document.getElementById('joplin-container-pluginAssetsContainer');
for (let i = 0; i < assets.length; i++) {
const asset = assets[i];
const assetId = asset.name ? asset.name : asset.path;
if (pluginAssetsAdded_[assetId]) continue;
pluginAssetsAdded_[assetId] = true;
if (asset.mime === 'application/javascript') {
const script = document.createElement('script');
script.src = asset.path;
pluginAssetsContainer.appendChild(script);
} else if (asset.mime === 'text/css') {
const link = document.createElement('link');
link.rel = 'stylesheet';
link.href = asset.path;
pluginAssetsContainer.appendChild(link);
}
}
}
ipc.scrollToHash = (event) => {
if (window.scrollToHashIID_) clearInterval(window.scrollToHashIID_);
window.scrollToHashIID_ = setInterval(() => {
if (document.readyState !== 'complete') return;
clearInterval(window.scrollToHashIID_);
const hash = event.hash.toLowerCase();
const e = document.getElementById(hash);
if (!e) {
console.warn('Cannot find hash', hash);
return;
}
e.scrollIntoView();
// Make sure the editor pane is also scrolled
setTimeout(() => {
const percent = currentPercentScroll();
setPercentScroll(percent);
ipcProxySendToHost('percentScroll', percent);
}, 10);
}, 100);
}
// https://stackoverflow.com/a/1977898/561309
function isImageReady(img) {
if (!img.complete) return false;
if (!img.naturalWidth || !img.naturalHeight) return false;
return true;
}
function allImagesLoaded() {
for (const image of document.images) {
if (!isImageReady(image)) return false;
}
return true;
}
let checkAllImageLoadedIID_ = null;
ipc.setHtml = (event) => {
const html = event.html;
markJsHackMarkerInserted_ = false;
updateBodyHeight();
contentElement.innerHTML = html;
let previousContentHeight = contentElement.scrollHeight;
let startTime = Date.now();
restorePercentScroll();
if (!checkScrollIID_) {
checkScrollIID_ = setInterval(() => {
const h = contentElement.scrollHeight;
if (h !== previousContentHeight) {
previousContentHeight = h;
restorePercentScroll();
}
if (Date.now() - startTime >= 1000) {
clearInterval(checkScrollIID_);
checkScrollIID_ = null;
}
}, 1);
}
addPluginAssets(event.options.pluginAssets);
if (event.options.downloadResources === 'manual') {
webviewLib.setupResourceManualDownload();
}
document.dispatchEvent(new Event('joplin-noteDidUpdate'));
if (checkAllImageLoadedIID_) clearInterval(checkAllImageLoadedIID_);
checkAllImageLoadedIID_ = setInterval(() => {
if (!allImagesLoaded()) return;
clearInterval(checkAllImageLoadedIID_);
ipcProxySendToHost('noteRenderComplete');
}, 100);
}
ipc.setPercentScroll = (event) => {
const percent = event.percent;
if (checkScrollIID_) {
clearInterval(checkScrollIID_);
checkScrollIID_ = null;
}
lastScrollEventTime = Date.now();
setPercentScroll(percent);
}
// HACK for Mark.js bug - https://github.com/julmot/mark.js/issues/127
let markJsHackMarkerInserted_ = false;
function addMarkJsSpaceHack(document) {
if (markJsHackMarkerInserted_) return;
const prepareElementsForMarkJs = (elements, type) => {
// const markJsHackMarker_ = '&#8203; &#8203;'
const markJsHackMarker_ = ' ';
for (let i = 0; i < elements.length; i++) {
if (!type) {
elements[i].innerHTML = elements[i].innerHTML + markJsHackMarker_;
} else if (type === 'insertBefore') {
elements[i].insertAdjacentHTML('beforeBegin', markJsHackMarker_);
}
}
}
prepareElementsForMarkJs(document.getElementsByTagName('p'));
prepareElementsForMarkJs(document.getElementsByTagName('div'));
prepareElementsForMarkJs(document.getElementsByTagName('br'), 'insertBefore');
markJsHackMarkerInserted_ = true;
}
let mark_ = null;
let markSelectedElement_ = null;
function setMarkers(keywords, options = null) {
if (!options) options = {};
// TODO: Add support for scriptType on mobile and CLI
if (!mark_) {
mark_ = new Mark(document.getElementById('joplin-container-content'), {
exclude: ['img'],
acrossElements: true,
});
}
addMarkJsSpaceHack(document);
mark_.unmark()
if (markSelectedElement_) markSelectedElement_.classList.remove('mark-selected');
let selectedElement = null;
let elementIndex = 0;
const onEachElement = (element) => {
// SEARCHHACK
// TODO: remove notFromAce hack when removing aceeditor
// when removing just remove the 'notFromAce' part and leave the rest alone
if (!('selectedIndex' in options) || 'notFromAce' in options) return;
// SEARCHHACK
if (('selectedIndex' in options) && elementIndex === options.selectedIndex) {
markSelectedElement_ = element;
element.classList.add('mark-selected');
selectedElement = element;
}
elementIndex++;
}
const markKeywordOptions = {
each: onEachElement,
};
if ('separateWordSearch' in options) markKeywordOptions.separateWordSearch = options.separateWordSearch;
for (let i = 0; i < keywords.length; i++) {
let keyword = keywords[i];
markJsUtils.markKeyword(mark_, keyword, {
pregQuote: pregQuote,
replaceRegexDiacritics: replaceRegexDiacritics,
}, markKeywordOptions);
}
// SEARCHHACK
// TODO: Remove this block (until the other SEARCHHACK marker) when removing Ace
// HACK: Aceeditor uses this view to handle all the searching
// The newer editor wont and this needs to be disabled in order to
// prevent an infinite loop
if (!('notFromAce' in options)) {
ipcProxySendToHost('setMarkerCount', elementIndex);
// We only scroll the element into view if the search just happened. So when the user type the search
// or select the next/previous result, we scroll into view. However for other actions that trigger a
// re-render, we don't scroll as this is normally not wanted.
// This is to go around this issue: https://github.com/laurent22/joplin/issues/1833
if (selectedElement && Date.now() - options.searchTimestamp <= 1000) selectedElement.scrollIntoView();
}
// SEARCHHACK
}
let markLoader_ = { state: 'idle', whenDone: null };
ipc.setMarkers = (event) => {
const keywords = event.keywords;
const options = event.options;
if (!keywords.length && markLoader_.state === 'idle') return;
if (markLoader_.state === 'idle') {
markLoader_ = {
state: 'loading',
whenDone: {keywords:keywords, options:options},
};
const script = document.createElement('script');
script.onload = function() {
markLoader_.state = 'ready';
setMarkers(markLoader_.whenDone.keywords, markLoader_.whenDone.options);
};
script.src = '../../node_modules/mark.js/dist/mark.min.js';
document.getElementById('joplin-container-markScriptContainer').appendChild(script);
} else if (markLoader_.state === 'ready') {
setMarkers(keywords, options);
} else if (markLoader_.state === 'loading') {
markLoader_.whenDone = {keywords:keywords, options:options};
}
}
function maxScrollTop() {
return Math.max(0, contentElement.scrollHeight - contentElement.clientHeight);
}
// The body element needs to have a fixed height for the content to be scrollable
function updateBodyHeight() {
document.getElementById('joplin-container-body').style.height = window.innerHeight + 'px';
document.getElementById('joplin-container-content').style.height = window.innerHeight + 'px';
}
function currentPercentScroll() {
const m = maxScrollTop();
return m ? contentElement.scrollTop / m : 0;
}
contentElement.addEventListener('scroll', webviewLib.logEnabledEventHandler(e => {
// If the last scroll event was done by the user, lastScrollEventTime is set and
// we can use that to skip the event handling. We skip it because in that case
// the scroll position has already been updated. Also we add a 200ms interval
// because otherwise it's most likely a glitch where we called ipc.setPercentScroll
// but the scroll event listener has not been called.
if (lastScrollEventTime && Date.now() - lastScrollEventTime < 200) {
lastScrollEventTime = 0;
return;
}
lastScrollEventTime = 0;
const percent = currentPercentScroll();
setPercentScroll(percent);
ipcProxySendToHost('percentScroll', percent);
}));
document.addEventListener('contextmenu', webviewLib.logEnabledEventHandler(event => {
let element = event.target;
// To handle right clicks on resource icons
if (element && !element.getAttribute('data-resource-id')) element = element.parentElement;
if (element && element.getAttribute('data-resource-id')) {
ipcProxySendToHost('contextMenu', {
type: element.getAttribute('src') ? 'image' : 'resource',
resourceId: element.getAttribute('data-resource-id'),
});
} else {
const selectedText = window.getSelection().toString();
if (selectedText) {
ipcProxySendToHost('contextMenu', {
type: 'text',
textToCopy: selectedText,
});
} else if (event.target.getAttribute('href')) {
ipcProxySendToHost('contextMenu', {
type: 'link',
textToCopy: event.target.getAttribute('href'),
});
}
}
}));
webviewLib.initialize({
postMessage: ipcProxySendToHost,
});
// 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', webviewLib.logEnabledEventHandler(e => {
e.preventDefault();
e.stopPropagation();
}));
document.addEventListener('dragover', webviewLib.logEnabledEventHandler(e => {
e.preventDefault();
e.stopPropagation();
}));
document.addEventListener('dragover', webviewLib.logEnabledEventHandler(e => {
e.preventDefault();
}));
window.addEventListener('resize', webviewLib.logEnabledEventHandler(() => {
updateBodyHeight();
}));
// Prevent middle-click as that would open the URL in an Electron window
// https://github.com/laurent22/joplin/issues/3287
window.addEventListener('auxclick', webviewLib.logEnabledEventHandler((event) => {
event.preventDefault();
}));
updateBodyHeight();
} catch (error) {
ipcProxySendToHost('error:' + JSON.stringify(webviewLib.cloneError(error)));
throw error;
}
</script>
</body>
</html>