heckyel/yt-local
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add optional javascript for adding videos to playlists without the browser cancelling loading of the video, and to display a status message

Browse Source
This commit is contained in:
James Taylor 2019-09-15 14:55:57 -07:00
parent f48de1aad2
commit 57c37a57e9
2 changed files with 82 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
youtube/static/shared.css
View File

@ -107,6 +107,18 @@ body{
flex-grow: 1;
padding-bottom: 20px;
}
#message-box{
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
border-style: outset;
padding: 20px;
background-color: var(--interface-color);
opacity: 0;
transition-property: opacity;
transition-duration: 0.3s;
}
.dropdown{

71
youtube/templates/base.html
View File

@ -3,7 +3,7 @@
<head>
<meta charset="utf-8">
<title>{{ page_title }}</title>
<meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline'; script-src 'none'; media-src 'self' https://*.googlevideo.com">
<meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline'; media-src 'self' https://*.googlevideo.com">
<link href="{{ theme_path }}" type="text/css" rel="stylesheet">
<link href="/youtube.com/static/shared.css" type="text/css" rel="stylesheet">
<link href="/youtube.com/static/comments.css" type="text/css" rel="stylesheet">
@ -103,6 +103,75 @@
<button type="submit" id="playlist-add-button" name="action" value="add">Add to playlist</button>
<button type="reset" id="item-selection-reset">Clear selection</button>
</form>
<script>
/* Takes control of the form if javascript is enabled, so that adding stuff to a playlist will not cause things to stop loading, and will display a status message. If javascript is disabled, the form will still work using regular HTML methods, but causes things on the page (such as the video) to stop loading. */
var playlistAddForm = document.getElementById('playlist-edit');
function setStyle(element, property, value){
element.style[property] = value;
}
function removeMessage(messageBox){
messageBox.parentNode.removeChild(messageBox);
}
function displayMessage(text, error=false){
let currentMessageBox = document.getElementById('message-box');
if(currentMessageBox !== null){
currentMessageBox.parentNode.removeChild(currentMessageBox);
}
let messageBox = document.createElement('div');
if(error){
messageBox.setAttribute('role', 'alert');
} else {
messageBox.setAttribute('role', 'status');
}
messageBox.setAttribute('id', 'message-box');
let textNode = document.createTextNode(text);
messageBox.appendChild(textNode);
document.querySelector('main').appendChild(messageBox);
let currentstyle = window.getComputedStyle(messageBox);
let removalDelay;
if(error){
removalDelay = 5000;
} else {
removalDelay = 1500;
}
window.setTimeout(setStyle, 20, messageBox, 'opacity', 1);
window.setTimeout(setStyle, removalDelay, messageBox, 'opacity', 0);
window.setTimeout(removeMessage, removalDelay+300, messageBox);
}
// https://developer.mozilla.org/en-US/docs/Learn/HTML/Forms/Sending_forms_through_JavaScript
function sendData(){
var XHR = new XMLHttpRequest();
var FD = new FormData(playlistAddForm);
// https://stackoverflow.com/questions/48322876/formdata-doesnt-include-value-of-buttons
FD.append('action', 'add');
XHR.addEventListener('load', function(event){
if(event.target.status == 204){
displayMessage('Added videos to playlist "' + FD.get('playlist_name') + '"');
} else {
displayMessage('Error adding videos to playlist: ' + event.target.status.toString(), true);
}
});
XHR.addEventListener('error', function(event){
if(event.target.status == 0){
displayMessage('XHR failed: Check that XHR requests are allowed', true);
} else {
displayMessage('XHR failed: Unknown error', true);
}
});
XHR.open('POST', playlistAddForm.getAttribute('action'));
XHR.send(FD);
}
playlistAddForm.addEventListener('submit', function(event){
event.preventDefault();
sendData();
});
</script>
</header>
<main>
{% block main %}