@ -1,4 +1,9 @@
<!DOCTYPE html>
<!-- TODO:
* open URL via url hash
* open app in restricted mode via hash
* options menu/zone?
-->
< html lang = "en" >
< head >
< meta charset = "utf-8" / >
@ -46,6 +51,13 @@
padding-bottom: 0;
border-spacing: 0;
}
#BtnFullscreen {
position: absolute;
top: 0;
right: 0;
z-index: 1;
margin: 8px;
}
.BoxPopup {
left: 0;
right: 0;
@ -71,20 +83,18 @@
height: var(--BtnActionHeight);
}
< / style >
< script >
var FrameZoomLevels = [50, 200];
var AppInfoString = `Frames Browser v2024-03-15.`;
< / script >
< / head >
< body >
< button id = "BtnFullscreen" onclick = "ToggleFullscreen()" > 🎞️ Menu< / button >
< div id = "BoxControls" > < table > < tr >
< td > < button onclick = "ShowAppInfo()" > ℹ ️ < / button > < / td
<!-- <td><button onclick="ShowAppInfo()">ℹ ️ --
< td > < button onclick = "ToggleDevTools()" > 📐️ Tools< / button > < / td >
< td >
< button id = "BtnFile" onclick = "this.nextElementSibling.click()" > 📄 File< / button >
< input type = "file" hidden = "hidden" style = "display: none;" onchange = "LoadFile(this.files[0])" / >
< / td >
< td > < button onclick = "ZoomFrame()" > 🔍️ Zoom< / button > < / td >
< td > < button onclick = "ToggleFullscreen()" > 🎞️ Hide< / button > < / td >
< td > < button onclick = "ListFrames()" > 🪟 Frames< / button > < / td >
< td style = "width: 100%;" > < input id = "InputUri" type = "text" style = "min-width: 100%;" placeholder = "🔗️ Enter URI..." onkeydown = "InputHandleKey(event)" / > < / td >
< td > < button id = "BtnLoad" onclick = "LoadFrame()" > ↩️ Load< / button > < / td >
@ -102,8 +112,24 @@
< h1 > Frames Browser< / h1 >
< p > Frames Browser is an iFrame-based HTML5 browser made for fun and development. Use the above menu to operate the app.< / p >
< p > Note: the app is still in development and data handling may break between versions! Backup your data externally to avoid losing it.< / p >
<!-- <p>You can also visit, or go back to, my home page: <a href="https://hub.octt.eu.org">hub.octt.eu.org</a>!</p> --
< 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
< h2 > Changelog< / h2 >
< h3 > 2024-03-19< / h3 > < ul >
< li > Remove info button from toolbar for now.< / li >
<!-- <li>Make current tab not persist after reload if changed when opened from hash flags.</li> -->
< / ul >
< h3 > 2024-03-18< / h3 > < ul >
< li > First implementation of handling of URL hash parameters (reduced or "quick" format).< / li >
< 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 >
< li > Add "fullscreen" (hide the main app bar) option to GUI (persistent) and quick URL hash flags.< / li >
< li > Fixed some issues with handling UTF8 data URIs.< / li >
< li > Make frame zoom option persistent.< / li >
< / ul >
< h3 > 2024-03-17< / h3 > < ul >
< li > Improve internal app state data handling (breaking previous version).< / li >
< li > Add data dump and reset options appearing on boot to users with pre-update database.< / li >
< li > Add link back to my hub in this README.< / li >
< / ul >
< h3 > 2024-03-15< / h3 > < ul >
< li > Improve some crusty code.< / li >
< li > Add this default/sample HTML text into the app, visible via the otherwise useless Root Window.< / li >
@ -120,11 +146,19 @@
< li > Excise frame content into another native browser tab (via opening the same URL)< / li >
< li > Import file into data URI from local file.< / li >
< / ul >
< script >
Array.from(document.querySelectorAll('a[href]')).forEach(function(el){
el.onclick = function(){ top.location = this.href }
})
< / script >
< / div >
< script >
var CurrentFrames = [];
var FrameIndexes = [-1];
var FrameZoomIndex = -1;
var AppData, SesAppData, SesAppDataBak;
function SaveAppData(){
localStorage.setItem('org.eu.octt.FramesBrowser.v1', JSON.stringify({ ...AppData, ...(SesAppData.optionsFromUrl ? SesAppDataBak : SesAppData) }));
};
var FrameZoomLevels = [50, 200];
var SampleHtmlContent = MainAppContent.innerHTML;
MainAppContent.innerHTML = '< iframe > < / iframe > ';
document.body.style.overflow = 'hidden';
@ -153,10 +187,6 @@
req.send();
};
function ShowAppInfo(){
alert(AppInfoString);
};
function InputHandleKey(ev){
// Enter
if (ev.keyCode == 13) {
@ -164,54 +194,65 @@
};
};
function GetTabUrlFromTabIndex (index) {
return (index === -1 ? null : AppData.urls[AppData.tabs[index].urlIndex]);
};
function ShowFrame(index){
var isFrameRoot = (index === -1);
var url = (GetTabUrlFromTabIndex(index) || '');
ListFramesClose();
FrameIndexes = [index];
SaveCurrentFrames ();
AppData.currentTabIndex = index ;
SaveAppData ();
InputUri.disabled = isFrameRoot;
InputUri.value = (isFrameRoot ? '' : CurrentFrames[index]) ;
InputUri.value = url ;
BtnFile.disabled = isFrameRoot;
BtnLoad.disabled = isFrameRoot;
BtnExcise.disabled = isFrameRoot;
document.querySelector('iframe').src = (isFrameRoot ? `data:text/html;utf8,${SampleHtmlContent}` : CurrentFrames[index] );
document.querySelector('iframe').src = (isFrameRoot ? `data:text/html;utf8,${encodeURIComponent(SampleHtmlContent)}` : url );
};
function SaveUrl(){
var url = document.querySelector('input[type="text"]').value;
localStorage.setItem('FramesBrowser.url', url);
CurrentFrames[FrameIndexes[0]] = url;
SaveCurrentFrames();
var urlIndex = AppData.urls.indexOf(url);
if (urlIndex === -1) {
// it's a new url, store it
AppData.urls.push(url);
urlIndex = (AppData.urls.length - 1);
}
AppData.tabs[AppData.currentTabIndex].urlIndex = urlIndex;
PruneUnusedUrls();
SaveAppData();
return url;
};
function PruneUnusedUrls(){
// TODO
};
function AddFrame(){
CurrentFrames = CurrentFrames.concat(['']);
AppData.tabs = AppData.tabs.concat([{} ]);
ListFrames();
ShowFrame(CurrentFrames.length - 1);
SaveCurrentFrames ();
ShowFrame(AppData.tab s.length - 1);
SaveAppData ();
RefreshFramesCounter();
};
function CloseFrame(index){
CurrentFrames.pop(index);
if (FrameIndexes[0] === index) {
ShowFrame(-1);//ShowRootFrame();
} else if (FrameIndexes[0] > index) {
FrameIndexes[0] --;
AppData.tabs.splice(index, 1);
PruneUnusedUrls();
if (AppData.currentTabIndex === index) {
ShowFrame(-1);
} else if (AppData.currentTabIndex > index) {
AppData.currentTabIndex--;
};
ListFrames(); ListFrames();
SaveCurrentFrames ();
SaveAppData ();
RefreshFramesCounter();
};
function SaveCurrentFrames(){
localStorage.setItem('FramesBrowser.CurrentFrames', JSON.stringify(CurrentFrames));
localStorage.setItem('FramesBrowser.FrameIndexes', JSON.stringify(FrameIndexes));
};
function RefreshFramesCounter(){
var count = CurrentFrame s.length;
var count = AppData.tabs.length;
var countHtml = '';
if (count > 99) {
countHtml = '(...)';
@ -221,6 +262,22 @@
document.querySelector('button[onclick="ListFrames()"]').textContent = `🪟${countHtml} Frames`;
};
function ApplyFullscreen () {
if (SesAppData.fullscreen) {
BoxControls.style.display = 'none';
BtnFullscreen.style.display = '';
} else {
BoxControls.style.display = '';
BtnFullscreen.style.display = 'none';
}
}
function ToggleFullscreen () {
SesAppData.fullscreen = !SesAppData.fullscreen;
ApplyFullscreen();
SaveAppData();
}
function LoadFrame(){
document.querySelector('iframe').src = SaveUrl();
};
@ -243,19 +300,14 @@
reader.readAsDataURL(file);
};
function ZoomFrame(){
if (FrameZoomIndex === FrameZoomLevels.length - 1) {
FrameZoomIndex = -1;
} else {
FrameZoomIndex ++;
};
var level = FrameZoomLevels[FrameZoomIndex];
var levelopp = FrameZoomLevels[FrameZoomLevels.length - 1 - FrameZoomIndex];
function ApplyFrameZoom () {
var level = FrameZoomLevels[SesAppData.frameZoomIndex];
var levelopp = FrameZoomLevels[FrameZoomLevels.length - 1 - SesAppData.frameZoomIndex];
var stylepos = (level < 100
? `right: ${level}vw; bottom: calc(${level}vh - 16px);`
: `left: ${levelopp/2}vw; top: calc(${levelopp/2}vh - 8px);`
);
document.querySelector('iframe').style = (F rameZoomIndex === -1
document.querySelector('iframe').style = (SesAppData.frameZoomIndex === -1
? ''
: `scale: ${level/100}; width: ${levelopp}vw; height: calc(${levelopp}vh - (var(--BtnActionHeight) * ${levelopp / 100})); ${stylepos}`
);
@ -267,6 +319,16 @@
} else {
zoomButton.textContent = '🔍️ Zoom';
};
}
function ZoomFrame(){
if (SesAppData.frameZoomIndex === FrameZoomLevels.length - 1) {
SesAppData.frameZoomIndex = -1;
} else {
SesAppData.frameZoomIndex ++;
};
ApplyFrameZoom();
SaveAppData();
};
function ListFrames(){
@ -278,13 +340,13 @@
Box.Content.appendChild(BoxList);
var LiMain = $new('li');
BoxList.appendChild(LiMain);
var BtnMain = $new('button', { innerHTML: 'Root Window', onclick: /*ShowRootFrame*/function(){ ShowFrame(-1) }, disabled: FrameIndexes[0] === -1 });
var BtnMain = $new('button', { innerHTML: 'Root Window', onclick: /*ShowRootFrame*/function(){ ShowFrame(-1) }, disabled: AppData.currentTabIndex === -1 });
LiMain.appendChild(BtnMain);
for (var i=0; i< CurrentFrame s.length; i + + ) {
for (var i=0; i< AppData.tab s.length; i + + ) {
var li = $new('li');
li.ItemIndex = i;
BoxList.appendChild(li);
var open = $new('button', { innerHTML: ` ${CurrentFrames[i] .slice(0, 16)} `, onclick: function(){ShowFrame(this.parentElement.ItemIndex)}, disabled: FrameIndexes[0] === i });
var open = $new('button', { innerHTML: ` ${(GetTabUrlFromTabIndex(i) || '') .slice(0, 16)} `, onclick: function(){ShowFrame(this.parentElement.ItemIndex)}, disabled: AppData.currentTabIndex === i });
li.append(open);
var close = $new('button', { innerHTML: '✖️', onclick: function(){CloseFrame(this.parentElement.ItemIndex)} });
li.append(close);
@ -326,12 +388,14 @@
return { Container: Container, Content: Content };
};
window.opendatauri = function opendatauri(data){
function opendatauri (data) {
var head = data.split(',')[0].split('data:')[1];
var [mime, encoding] = head.split(';');
data = data.split(',').slice(1).join(',');
if (encoding.toLowerCase() === 'base64') {
data = atob(data);
} else if (encoding.toLowerCase() === 'utf8') {
data = decodeURIComponent(data);
};
var bytes = new Array(data.length);
for (var i = 0; i < data.length ; i + + ) {
@ -342,13 +406,97 @@
), '_blank');
};
// https://stackoverflow.com/questions/45053624/convert-hex-to-binary-in-javascript/45054052#45054052
function hex2bin (hex) {
return (parseInt(hex, 16).toString(2)).padStart((hex.length * 4), '0');
}
function AlertMigrateAppData(){
var stored = Object.keys(localStorage);
if (stored.includes('FramesBrowser.CurrentFrames') || stored.includes('FramesBrowser.FrameIndexes') || stored.includes('FramesBrowser.url')) {
var overlay = document.createElement('div');
overlay.style = 'position: absolute; width: 100vw; height: 100vh; top: 0; background: white; color: black;';
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 >
< button > Reset< / button >
< p > Your open URLs:< / p > < ul > ${JSON.parse(localStorage.getItem('FramesBrowser.CurrentFrames'))?.map(function(item){
return `< li > ${item.replaceAll('< ','< ').replaceAll('>','> ')}< / li > `;
}).join('') || '< p > [nothing previously saved]< / p > '}< / ul > `;
overlay.querySelector('button').onclick = function(){
['CurrentFrames','FrameIndexes','url'].forEach(function(key){
localStorage.removeItem(`FramesBrowser.${key}`);
});
location.reload();
};
document.body.appendChild(overlay);
}
};
window.onhashchange = function(){ location.reload() };
window.onload = function(){
Array.from(document.querySelectorAll('noscript, .NoScript')).forEach(function(el){ el.remove() });
CurrentFrames = (JSON.parse(localStorage.getItem('FramesBrowser.CurrentFrames')) || []);
FrameIndexes = (JSON.parse(localStorage.getItem('FramesBrowser.FrameIndexes')) || [-1]);
document.querySelector('input[type="text"]').value = localStorage.getItem('FramesBrowser.url');
ShowFrame(FrameIndexes[0]);
AppData = (JSON.parse(localStorage.getItem('org.eu.octt.FramesBrowser.v1')) || {});
SesAppData = {
optionsFromUrl: (AppData.optionsFromUrl || false),
fullscreen: (AppData.fullscreen || false),
frameZoomIndex: (isNaN(parseInt(AppData.frameZoomIndex)) ? -1 : AppData.frameZoomIndex),
};
SesAppDataBak = structuredClone(SesAppData);
AppData = {
tabs: (AppData.tabs || []),
urls: (AppData.urls || []),
currentTabIndex: (isNaN(parseInt(AppData.currentTabIndex)) ? -1 : AppData.currentTabIndex),
};
AlertMigrateAppData();
SaveAppData();
document.querySelector('input[type="text"]').value = GetTabUrlFromTabIndex(AppData.currentTabIndex);
ApplyFullscreen();
ApplyFrameZoom();
ShowFrame(AppData.currentTabIndex);
RefreshFramesCounter();
if (location.hash) {
var tokens = location.hash.slice(1).split('|');
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 >
octospacc