<%@ Page Title="Queue Priority" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" %>
<%@ Register Assembly="AjaxUploader" Namespace="AjaxUploader.Controls" TagPrefix="au" %> 
<asp:Content ID="TitleContent" ContentPlaceHolderID="TitleContent" runat="server">Queue Priority - AjaxUploader v5.0 Demos</asp:Content>
<asp:Content ID="HeaderContent" ContentPlaceHolderID="HeaderTitle" runat="server">Queue Priority</asp:Content> 
<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server"> 
<div class="demo-card"> <div class="demo-card-header">Priority Queue Ordering</div> <div class="demo-card-body"> <p class="demo-description"> Assign priority levels to files in the upload queue. Higher priority files are uploaded
 first regardless of when they were added.
 </p> <div id="uploader"></div> <div class="mt-2"> <button type="button" class="btn btn-primary btn-sm" id="btnStart" disabled>Start Upload</button> </div> <div id="queueList" class="mt-3"></div> <div id="status" class="mt-2 text-muted small"></div> <div class="code-panel"> <pre><code>var uploader = AjaxUploader.create('#uploader', {
 uploadUrl: '<%= ResolveUrl("~/ajaxupload.axd/upload") %>',
 multiple: true,
 autoUpload: false,
 concurrency: 1,
 onSelect: function(files) {
 files.forEach(function(f) {
 // Default priority: normal
 // Change with uploader.setTaskPriority(taskId, 'high');
 });
 }
});

// Priorities: 'high', 'normal', 'low'</code></pre> </div> </div>
</div> 
</asp:Content> 
<asp:Content ID="ScriptsContent" ContentPlaceHolderID="ScriptsContent" runat="server">
<script> var queueList = document.getElementById('queueList');
 var btnStart = document.getElementById('btnStart');
 var status = document.getElementById('status');
 var fileQueue = [];

 var uploader = AjaxUploader.create(document.getElementById('uploader'), {
 uploadUrl: '<%= ResolveUrl("~/ajaxupload.axd/upload") %>',
 multiple: true,
 autoUpload: false,
 concurrency: 1,
 onSelect: function(files) {
 files.forEach(function(f) {
 fileQueue.push({ id: f.id || fileQueue.length, name: f.name, size: f.size, priority: 'normal' });
 });
 btnStart.disabled = false;
 renderQueue();
 },
 onTaskComplete: function(task) {
 status.textContent = task.fileName + ' completed.';
 },
 onComplete: function() {
 status.textContent = 'All uploads complete.';
 btnStart.disabled = true;
 }
 });

 function renderQueue() {
 var sorted = fileQueue.slice().sort(function(a, b) {
 var order = { high: 0, normal: 1, low: 2 };
 return order[a.priority] - order[b.priority];
 });
 queueList.innerHTML = '';
 sorted.forEach(function(item, i) {
 var colors = { high: 'danger', normal: 'secondary', low: 'light text-dark' };
 var div = document.createElement('div');
 div.className = 'p-2 mb-1 border rounded d-flex justify-content-between align-items-center';
 div.innerHTML = '<span>' + (i + 1) + '. ' + item.name +
 ' <small class="text-muted">(' + AjaxUploader.formatSize(item.size) + ')</small></span>' +
 '<span class="d-flex gap-1">' +
 '<button type="button" class="btn btn-outline-danger btn-sm' + (item.priority === 'high' ? ' active' : '') +
 '" onclick="setPriority(' + item.id + ',\'high\')">High</button>' +
 '<button type="button" class="btn btn-outline-secondary btn-sm' + (item.priority === 'normal' ? ' active' : '') +
 '" onclick="setPriority(' + item.id + ',\'normal\')">Normal</button>' +
 '<button type="button" class="btn btn-outline-info btn-sm' + (item.priority === 'low' ? ' active' : '') +
 '" onclick="setPriority(' + item.id + ',\'low\')">Low</button></span>';
 queueList.appendChild(div);
 });
 }

 function setPriority(id, level) {
 fileQueue.forEach(function(f) { if (f.id === id) f.priority = level; });
 renderQueue();
 }

 btnStart.addEventListener('click', function() {
 uploader.startUpload();
 btnStart.disabled = true;
 });
</script>
</asp:Content>
