504 lines
18 KiB
HTML
504 lines
18 KiB
HTML
<!DOCTYPE html>
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<!-- TODO:
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* open URL via url hash
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* open app in restricted mode via hash
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* options menu/zone?
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-->
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<html lang="en">
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<head>
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<meta charset="utf-8"/>
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<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
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<meta property="og:url" content="https://hub.octt.eu.org/FramesBrowser"/>
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<link rel="canonical" href="https://hub.octt.eu.org/FramesBrowser"/>
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<link rel="shortcut icon" type="image/x-icon" href="../favicon.png"/>
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<link rel="manifest" href="./manifest.json"/>
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<title>🪟️ Frames Browser (WIP)</title>
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<meta name="description" content="iFrame-based HTML5 Browser for fun and development"/>
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<meta property="og:title" content="🪟️ Frames Browser (WIP)"/>
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<meta property="og:description" content="iFrame-based HTML5 Browser for fun and development"/>
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<style>
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:root {
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--BaseMargin: 8px;
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--BtnHeight: calc(1rem + var(--BaseMargin));
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--BtnActionHeight: calc(2rem + var(--BaseMargin));
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--ColorBg: #f0f0f0;
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--ColorFg: #0f0f0f;
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}
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* {
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box-sizing: border-box;
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}
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body {
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margin: 0px;
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max-width: 100vw;
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max-height: 100vh;
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}
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button {
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height: var(--BtnHeight);
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}
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iframe {
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border: none;
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width: 100vw;
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height: calc(100vh - var(--BtnActionHeight));
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position: relative;
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}
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#BoxControls {
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overflow: auto;
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}
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#BoxControls table, #BoxControls table td, #BoxControls table td > * {
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height: var(--BtnActionHeight);
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min-width: var(--BtnActionHeight);
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padding-top: 0;
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padding-bottom: 0;
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border-spacing: 0;
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}
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#BtnFullscreen {
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position: absolute;
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top: 0;
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right: 0;
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z-index: 1;
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margin: 8px;
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}
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.BoxPopup {
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left: 0;
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right: 0;
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}
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.BoxPopup.Container {
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position: absolute;
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top: 10vh;
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z-index: 1;
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text-align: center;
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}
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.BoxPopup.Content {
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position: relative;
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margin-left: auto;
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margin-right: auto;
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width: fit-content;
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max-height: 80vh;
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overflow: auto;
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box-shadow: gray 4px 4px 4px 0px;
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color: var(--ColorFg);
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background-color: var(--ColorBg);
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}
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.BtnAction {
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height: var(--BtnActionHeight);
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}
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</style>
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</head>
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<body>
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<button id="BtnFullscreen" onclick="ToggleFullscreen()">🎞️ Menu</button>
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<div id="BoxControls"><table><tr>
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<!--<td><button onclick="ShowAppInfo()">ℹ️ Info</button></td>-->
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<td><button onclick="ToggleDevTools()">📐️ Tools</button></td>
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<td>
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<button id="BtnFile" onclick="this.nextElementSibling.click()">📄 File</button>
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<input type="file" hidden="hidden" style="display: none;" onchange="LoadFile(this.files[0])"/>
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</td>
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<td><button onclick="ZoomFrame()">🔍️ Zoom</button></td>
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<td><button onclick="ToggleFullscreen()">🎞️ Hide</button></td>
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<td><button onclick="ListFrames()">🪟 Frames</button></td>
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<td style="width: 100%;"><input id="InputUri" type="text" style="min-width: 100%;" placeholder="🔗️ Enter URI..." onkeydown="InputHandleKey(event)"/></td>
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<td><button id="BtnLoad" onclick="LoadFrame()">↩️ Load</button></td>
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<td><button id="BtnExcise" onclick="ExciseFrame()">↗️ Excise</button></td>
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<tr></table></div>
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<noscript><p class="NoScript">
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This is an actual app, not a badly-made website.
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<br>
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It needs JavaScript to work, so you need to enable it.
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<br>
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The code is fully open, and you can review it with "View Page Source".
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</p></noscript>
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<div id="BoxHandy"></div>
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<div id="MainAppContent">
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<h1>Frames Browser</h1>
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<p>Frames Browser is an iFrame-based HTML5 browser made for fun and development. Use the above menu to operate the app.</p>
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<p>Note: the app is still in development and data handling may break between versions! Backup your data externally to avoid losing it.</p>
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<p>You can also visit, or go back to, my home page (OctoSpacc Hub): <a href="https://hub.octt.eu.org">hub.octt.eu.org</a>!</p>
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<h2>Changelog</h2>
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<h3>2024-03-19</h3><ul>
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<li>Remove info button from toolbar for now.</li>
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<!--<li>Make current tab not persist after reload if changed when opened from hash flags.</li>-->
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</ul>
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<h3>2024-03-18</h3><ul>
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<li>First implementation of handling of URL hash parameters (reduced or "quick" format).</li>
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<li>Open a <a href="https://hub.octt.eu.org/FramesBrowser/#_1|u=https://example.com">specific URI</a> or <a href="https://hub.octt.eu.org/FramesBrowser/#_1|h=<h2>Hello World!</h2>">raw HTML data</a> via URL hash (click the links to try!).</li>
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<li>Add "fullscreen" (hide the main app bar) option to GUI (persistent) and quick URL hash flags.</li>
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<li>Fixed some issues with handling UTF8 data URIs.</li>
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<li>Make frame zoom option persistent.</li>
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</ul>
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<h3>2024-03-17</h3><ul>
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<li>Improve internal app state data handling (breaking previous version).</li>
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<li>Add data dump and reset options appearing on boot to users with pre-update database.</li>
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<li>Add link back to my hub in this README.</li>
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</ul>
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<h3>2024-03-15</h3><ul>
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<li>Improve some crusty code.</li>
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<li>Add this default/sample HTML text into the app, visible via the otherwise useless Root Window.</li>
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<li>Add symbol for indicating current zoom level on zoom button.</li>
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<li>Add counter for open frames (goes up to 99 before becoming generic).</li>
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<li>Better handling of devtools, removed floating button and always use dedicated button.</li>
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</ul>
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<h3>2023-09-23 and before</h3><ul>
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<li>MVP version of the app with finished UI and basic features.</li>
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<li>Eruda DevTools.</li>
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<li>In-frame page zoom with 3 levels.</li>
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<li>Creating, deleting, and switching to different frames, inputting URL.</li>
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<li>Persistent app state saving frames and their URLs.</li>
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<li>Excise frame content into another native browser tab (via opening the same URL)</li>
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<li>Import file into data URI from local file.</li>
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</ul>
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<script>
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Array.from(document.querySelectorAll('a[href]')).forEach(function(el){
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el.onclick = function(){ top.location = this.href }
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})
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</script>
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</div>
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<script>
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var AppData, SesAppData, SesAppDataBak;
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function SaveAppData(){
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localStorage.setItem('org.eu.octt.FramesBrowser.v1', JSON.stringify({ ...AppData, ...(SesAppData.optionsFromUrl ? SesAppDataBak : SesAppData) }));
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};
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var FrameZoomLevels = [50, 200];
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var SampleHtmlContent = MainAppContent.innerHTML;
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MainAppContent.innerHTML = '<iframe></iframe>';
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document.body.style.overflow = 'hidden';
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function $new(tag, props){
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var el = document.createElement(tag);
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if (props) {
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Object.keys(props).forEach(function(key){
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el[key] = props[key];
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});
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};
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return el;
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};
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function $request(url, opts){
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if (!opts.method) {
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opts.method = 'GET';
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};
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var req = new XMLHttpRequest();
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req.onreadystatechange = function(){
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if (this.readyState == 4) {
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opts.callback(req.responseText);
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};
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};
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req.open(opts.method, url, true);
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req.send();
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};
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function InputHandleKey(ev){
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// Enter
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if (ev.keyCode == 13) {
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LoadFrame();
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};
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};
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function GetTabUrlFromTabIndex (index) {
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return (index === -1 ? null : AppData.urls[AppData.tabs[index].urlIndex]);
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};
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function ShowFrame(index){
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var isFrameRoot = (index === -1);
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var url = (GetTabUrlFromTabIndex(index) || '');
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ListFramesClose();
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AppData.currentTabIndex = index;
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SaveAppData();
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InputUri.disabled = isFrameRoot;
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InputUri.value = url;
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BtnFile.disabled = isFrameRoot;
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BtnLoad.disabled = isFrameRoot;
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BtnExcise.disabled = isFrameRoot;
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document.querySelector('iframe').src = (isFrameRoot ? `data:text/html;utf8,${encodeURIComponent(SampleHtmlContent)}` : url);
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};
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function SaveUrl(){
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var url = document.querySelector('input[type="text"]').value;
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var urlIndex = AppData.urls.indexOf(url);
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if (urlIndex === -1) {
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// it's a new url, store it
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AppData.urls.push(url);
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urlIndex = (AppData.urls.length - 1);
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}
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AppData.tabs[AppData.currentTabIndex].urlIndex = urlIndex;
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PruneUnusedUrls();
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SaveAppData();
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return url;
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};
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function PruneUnusedUrls(){
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// TODO
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};
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function AddFrame(){
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AppData.tabs = AppData.tabs.concat([{}]);
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ListFrames();
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ShowFrame(AppData.tabs.length - 1);
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SaveAppData();
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RefreshFramesCounter();
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};
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function CloseFrame(index){
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AppData.tabs.splice(index, 1);
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PruneUnusedUrls();
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if (AppData.currentTabIndex === index) {
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ShowFrame(-1);
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} else if (AppData.currentTabIndex > index) {
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AppData.currentTabIndex--;
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};
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ListFrames(); ListFrames();
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SaveAppData();
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RefreshFramesCounter();
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};
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function RefreshFramesCounter(){
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var count = AppData.tabs.length;
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var countHtml = '';
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if (count > 99) {
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countHtml = '(...)';
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} else if (count > 0) {
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countHtml = `(${count})`;
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};
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document.querySelector('button[onclick="ListFrames()"]').textContent = `🪟${countHtml} Frames`;
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};
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function ApplyFullscreen () {
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if (SesAppData.fullscreen) {
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BoxControls.style.display = 'none';
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BtnFullscreen.style.display = '';
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} else {
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BoxControls.style.display = '';
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BtnFullscreen.style.display = 'none';
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}
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}
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function ToggleFullscreen () {
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SesAppData.fullscreen = !SesAppData.fullscreen;
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ApplyFullscreen();
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SaveAppData();
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}
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function LoadFrame(){
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document.querySelector('iframe').src = SaveUrl();
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};
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function ExciseFrame(){
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var uri = SaveUrl();
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if (uri.toLowerCase().startsWith('data:')) {
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opendatauri(uri);
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} else {
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open(uri, '_blank');
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};
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};
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function LoadFile(file){
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var reader = new FileReader();
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reader.onload = function(){
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document.querySelector('input[type="text"]').value = reader.result;
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LoadFrame();
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};
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reader.readAsDataURL(file);
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};
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function ApplyFrameZoom () {
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var level = FrameZoomLevels[SesAppData.frameZoomIndex];
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var levelopp = FrameZoomLevels[FrameZoomLevels.length - 1 - SesAppData.frameZoomIndex];
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var stylepos = (level < 100
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? `right: ${level}vw; bottom: calc(${level}vh - 16px);`
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: `left: ${levelopp/2}vw; top: calc(${levelopp/2}vh - 8px);`
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);
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document.querySelector('iframe').style = (SesAppData.frameZoomIndex === -1
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? ''
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: `scale: ${level/100}; width: ${levelopp}vw; height: calc(${levelopp}vh - (var(--BtnActionHeight) * ${levelopp / 100})); ${stylepos}`
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);
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var zoomButton = document.querySelector('button[onclick="ZoomFrame()"]');
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if (level < 100) {
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zoomButton.textContent = '🔍️(-) Zoom';
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} else if (level > 100) {
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zoomButton.textContent = '🔍️(+) Zoom';
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} else {
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zoomButton.textContent = '🔍️ Zoom';
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};
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}
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function ZoomFrame(){
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if (SesAppData.frameZoomIndex === FrameZoomLevels.length - 1) {
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SesAppData.frameZoomIndex = -1;
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} else {
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SesAppData.frameZoomIndex ++;
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};
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ApplyFrameZoom();
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SaveAppData();
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};
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function ListFrames(){
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if (!ListFramesClose()){
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var Box = NewBoxPopup('BoxFramesList');
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var BtnAdd = $new('button', { className: 'BtnAction', innerHTML: '➕ Add', onclick: AddFrame });
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Box.Content.appendChild(BtnAdd);
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var BoxList = $new('ul');
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Box.Content.appendChild(BoxList);
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var LiMain = $new('li');
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BoxList.appendChild(LiMain);
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var BtnMain = $new('button', { innerHTML: 'Root Window', onclick: /*ShowRootFrame*/function(){ ShowFrame(-1) }, disabled: AppData.currentTabIndex === -1 });
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LiMain.appendChild(BtnMain);
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for (var i=0; i<AppData.tabs.length; i++) {
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var li = $new('li');
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li.ItemIndex = i;
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BoxList.appendChild(li);
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var open = $new('button', { innerHTML: ` ${(GetTabUrlFromTabIndex(i) || '').slice(0, 16)} `, onclick: function(){ShowFrame(this.parentElement.ItemIndex)}, disabled: AppData.currentTabIndex === i });
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li.append(open);
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var close = $new('button', { innerHTML: '✖️', onclick: function(){CloseFrame(this.parentElement.ItemIndex)} });
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li.append(close);
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};
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};
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};
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function ListFramesClose(){
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var exist = document.querySelector('#BoxFramesList');
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if (exist) {
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BoxFramesList.remove();
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};
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return exist;
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};
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var isDevToolsOpen = false;
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function ToggleDevTools(){
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if (typeof(eruda) === 'undefined') {
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$request('https://cdn.jsdelivr.net/npm/eruda', { callback: function(text){
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eval(text);
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eruda.init();
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eruda._shadowRoot.querySelector('div.eruda-entry-btn').style.display = 'none';
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eruda.show();
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isDevToolsOpen = true;
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} });
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} else {
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eruda[isDevToolsOpen ? 'hide' : 'show']();
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isDevToolsOpen = !isDevToolsOpen;
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}
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};
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function NewBoxPopup(id){
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var Container = $new('div', { id: id, className: 'BoxPopup Container' });
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var Content = $new('div', { className: 'BoxPopup Content' });
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Container.appendChild(Content);
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var BtnClose = $new('button', { className: 'BtnAction', innerHTML: '❌ Close', onclick: function(){this.parentElement.parentElement.remove()} });
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Content.appendChild(BtnClose);
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BoxHandy.appendChild(Container);
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return { Container: Container, Content: Content };
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};
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function opendatauri (data) {
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var head = data.split(',')[0].split('data:')[1];
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var [mime, encoding] = head.split(';');
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data = data.split(',').slice(1).join(',');
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if (encoding.toLowerCase() === 'base64') {
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data = atob(data);
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} else if (encoding.toLowerCase() === 'utf8') {
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data = decodeURIComponent(data);
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};
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var bytes = new Array(data.length);
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for (var i = 0; i < data.length; i++) {
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bytes[i] = data.charCodeAt(i);
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};
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window.open(URL.createObjectURL(
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new Blob([new Uint8Array(bytes)], { type: `${mime};${encoding ? encoding : 'utf8'}` })
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), '_blank');
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};
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// https://stackoverflow.com/questions/45053624/convert-hex-to-binary-in-javascript/45054052#45054052
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function hex2bin (hex) {
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return (parseInt(hex, 16).toString(2)).padStart((hex.length * 4), '0');
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}
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function AlertMigrateAppData(){
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var stored = Object.keys(localStorage);
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if (stored.includes('FramesBrowser.CurrentFrames') || stored.includes('FramesBrowser.FrameIndexes') || stored.includes('FramesBrowser.url')) {
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var overlay = document.createElement('div');
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overlay.style = 'position: absolute; width: 100vw; height: 100vh; top: 0; background: white; color: black;';
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overlay.innerHTML = `<p>The app handling of data has changed in the last update. Please copy and backup externally all the data you need and reset the app to continue using it.</p>
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<button>Reset</button>
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<p>Your open URLs:</p><ul>${JSON.parse(localStorage.getItem('FramesBrowser.CurrentFrames'))?.map(function(item){
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return `<li>${item.replaceAll('<','<').replaceAll('>','>')}</li>`;
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}).join('') || '<p>[nothing previously saved]</p>'}</ul>`;
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overlay.querySelector('button').onclick = function(){
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['CurrentFrames','FrameIndexes','url'].forEach(function(key){
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localStorage.removeItem(`FramesBrowser.${key}`);
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});
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location.reload();
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};
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document.body.appendChild(overlay);
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}
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};
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window.onhashchange = function(){ location.reload() };
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window.onload = function(){
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Array.from(document.querySelectorAll('noscript, .NoScript')).forEach(function(el){ el.remove() });
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AppData = (JSON.parse(localStorage.getItem('org.eu.octt.FramesBrowser.v1')) || {});
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SesAppData = {
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optionsFromUrl: (AppData.optionsFromUrl || false),
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fullscreen: (AppData.fullscreen || false),
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frameZoomIndex: (isNaN(parseInt(AppData.frameZoomIndex)) ? -1 : AppData.frameZoomIndex),
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};
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SesAppDataBak = structuredClone(SesAppData);
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AppData = {
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tabs: (AppData.tabs || []),
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urls: (AppData.urls || []),
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currentTabIndex: (isNaN(parseInt(AppData.currentTabIndex)) ? -1 : AppData.currentTabIndex),
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};
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AlertMigrateAppData();
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SaveAppData();
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document.querySelector('input[type="text"]').value = GetTabUrlFromTabIndex(AppData.currentTabIndex);
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ApplyFullscreen();
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ApplyFrameZoom();
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ShowFrame(AppData.currentTabIndex);
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RefreshFramesCounter();
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if (location.hash) {
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var tokens = location.hash.slice(1).split('|');
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if (tokens[0].startsWith('_')) {
|
||
// leading underscore indicates a restricted quick query, succeding charaters are identifiers for versioning
|
||
var paramsVersion = tokens[0].slice(1);
|
||
var flags = {};
|
||
SesAppData.optionsFromUrl = true;
|
||
tokens = tokens.slice(1);
|
||
switch (paramsVersion) {
|
||
case '1':
|
||
while (tokens.length > 0) {
|
||
var opt = tokens[0];
|
||
var optLow = opt.toLowerCase();
|
||
if (optLow.startsWith('f=')) {
|
||
var flagStr = hex2bin(opt.slice(2));
|
||
var flags = {
|
||
//disallowPrefsOverride: flagStr[0],
|
||
fullscreen: flagStr[3],
|
||
};
|
||
for (var flag in flags) {
|
||
flags[flag] = !!Number(flags[flag]);
|
||
}
|
||
} else if (optLow.startsWith('u=') || optLow.startsWith('h=')) {
|
||
// load data URI, or HTML content
|
||
tokens[0] = tokens[0].slice(2);
|
||
var fieldData = tokens.join('|');
|
||
var url = ((optLow.startsWith('h=') ? 'data:text/html;utf8,' : '') + fieldData);
|
||
console.log(url, GetTabUrlFromTabIndex(AppData.currentTabIndex), AppData.currentTabIndex, GetTabUrlFromTabIndex(AppData.currentTabIndex) !== url);
|
||
if (GetTabUrlFromTabIndex(AppData.currentTabIndex) !== url) {
|
||
AddFrame();
|
||
document.querySelector('input[type="text"]').value = url;
|
||
LoadFrame();
|
||
}
|
||
flags.fullscreen && !SesAppData.fullscreen && ToggleFullscreen();
|
||
!flags.fullscreen && SesAppData.fullscreen && ToggleFullscreen();
|
||
break;
|
||
}
|
||
tokens = tokens.slice(1);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
};
|
||
</script>
|
||
</body>
|
||
</html>
|