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Drag-Drop Image Uploader

Enables image uploading by simply dragging and dropping images onto a fixed div in the bottom right corner of the page. Easily upload and use images on any website with this convenient script.

当前为 2023-05-21 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Drag-Drop Image Uploader
  3. // @namespace           http://tampermonkey.net/
  4. // @version      0.1.4
  5. // @description  Enables image uploading by simply dragging and dropping images onto a fixed div in the bottom right corner of the page. Easily upload and use images on any website with this convenient script.
  6. // @match        https://*/*
  7. // @grant        none
  8. // @license             MIT License
  9. // @author              CY Fung
  10. // @run-at       document-start
  11. // ==/UserScript==
  12.  
  13. (function () {
  14.     'use strict';
  15.  
  16.     if (location.hostname === 'lihkg.com') {
  17.  
  18.         if (location.pathname !== '/robots.txt') return;
  19.         if (window.name !== 'pNwjxjQi') return;
  20.         if (window === top) return;
  21.  
  22.         function T(e) {
  23.             return new Promise(function (resolve, reject) {
  24.                 window.history.replaceState(null, '', 'https://lihkg.com');
  25.                 var xhr = new XMLHttpRequest();
  26.                 var formData = new FormData();
  27.                 formData.append('image', e);
  28.                 xhr.open('POST', 'https://api.na.cx/upload');
  29.  
  30.                 // Set the Referer header to an empty string
  31.                 xhr.onreadystatechange = function () {
  32.                     if (xhr.readyState === 4) {
  33.                         if (xhr.status === 200) {
  34.                             var response = JSON.parse(xhr.responseText);
  35.                             var status = response.status;
  36.                             var url = response.url;
  37.                             var error = response.error;
  38.  
  39.                             if (status === 200) {
  40.                                 resolve(url);
  41.                             } else {
  42.                                 reject(new Error(error));
  43.                             }
  44.                         } else {
  45.                             reject(new Error('Status is not 200'));
  46.                         }
  47.                     }
  48.                 };
  49.  
  50.                 xhr.send(formData);
  51.             });
  52.         }
  53.  
  54.  
  55.         let iframe = document;
  56.  
  57.         // Function to handle the dragenter event
  58.         function handleDragEnter(e) {
  59.             top.postMessage('pNwjxjQi-top-dragenter', '*');
  60.             // Add a class to visually indicate the drag over the iframe
  61.             //iframe.classList.add("drag-over");
  62.         }
  63.  
  64.         // Function to handle the dragover event
  65.         function handleDragOver(e) {
  66.             // top.postMessage('pNwjxjQi-top-dragover','*');
  67.             e.preventDefault();
  68.             e.dataTransfer.dropEffect = 'copy';
  69.         }
  70.  
  71.         // Function to handle the dragleave event
  72.         function handleDragLeave(e) {
  73.             top.postMessage('pNwjxjQi-top-dragleave', '*');
  74.             // Remove the class when the drag leaves the iframe
  75.             //iframe.classList.remove("drag-over");
  76.         }
  77.  
  78.         async function goUpload(e) {
  79.  
  80.             var files = e.dataTransfer.files;
  81.             let images = [...files].filter(file => file.type == "image/png" || file.type == "image/jpg" || file.type == "image/jpeg" || file.type == "image/gif")
  82.             console.log(images);
  83.  
  84.             for (const image of images) {
  85.                 await T(image)
  86.                     .then(function (url) {
  87.                         // focusElement.focus();
  88.                         // document.execCommand("insertText", false, url)
  89.                         top.postMessage({ p: 'pNwjxjQi-top-finish-upload', url: url }, '*')
  90.                         console.log('Uploaded image URL:', url);
  91.                     })
  92.                     .catch(function (error) {
  93.                         console.error('Upload failed:', error);
  94.                     });
  95.             }
  96.  
  97.         }
  98.  
  99.         // Function to handle the drop event
  100.         function handleDrop(e) {
  101.             e.preventDefault();
  102.             top.postMessage('pNwjxjQi-top-drop', '*');
  103.  
  104.             // Remove the class when the drop occurs
  105.             //iframe.classList.remove("drag-over");
  106.  
  107.             // Access the dropped files or data
  108.  
  109.             goUpload(e);
  110.  
  111.             // Process the dropped files or data as needed
  112.             // ...
  113.         }
  114.         // Add event listeners for drag and drop events
  115.         iframe.addEventListener("dragenter", handleDragEnter, false);
  116.         iframe.addEventListener("dragover", handleDragOver, false);
  117.         iframe.addEventListener("dragleave", handleDragLeave, false);
  118.         iframe.addEventListener("drop", handleDrop, false);
  119.  
  120.  
  121.         top.postMessage('pNwjxjQi-top-uploader-ready', '*');
  122.  
  123.  
  124.     } else {
  125.  
  126.         function onReady() {
  127.  
  128.             // Create the fixed div element
  129.             var fixedDiv = document.createElement('div');
  130.             fixedDiv.style.position = 'fixed';
  131.             fixedDiv.style.zIndex = '8888';
  132.             fixedDiv.style.bottom = '10px';
  133.             fixedDiv.style.right = '10px';
  134.             fixedDiv.style.width = '200px';
  135.             fixedDiv.style.height = '200px';
  136.             fixedDiv.style.backgroundColor = 'rgba(0, 0, 0, 0.5)';
  137.             fixedDiv.style.border = '2px solid white';
  138.             fixedDiv.style.borderRadius = '5px';
  139.             fixedDiv.style.padding = '0px';
  140.             fixedDiv.style.color = 'white';
  141.             fixedDiv.style.fontSize = '14px';
  142.             fixedDiv.style.textAlign = 'center';
  143.             //    fixedDiv.style.cursor = 'move';
  144.             // fixedDiv.draggable = true;
  145.             fixedDiv.style.opacity = '0'; // Set initial opacity to 0 (hidden)
  146.             fixedDiv.style.display = 'none';
  147.             fixedDiv.id = 'ewIMf5Dw';
  148.             fixedDiv.style.background = 'url(https://static.thenounproject.com/png/3905046-200.png)';
  149.             fixedDiv.style.backgroundPosition = 'center';
  150.             fixedDiv.style.backgroundSize = 'cover';
  151.             fixedDiv.style.backgroundRepeat = 'no-repeat';
  152.  
  153.             fixedDiv.style.pointerEvents = 'none';
  154.  
  155.             let focusElement = null;
  156.  
  157.             let moused = false;
  158.  
  159.             let lastDragIn = 0;
  160.             let cid = 0;
  161.             function setupIframe(iframe) {
  162.                 iframe.name = 'pNwjxjQi';
  163.  
  164.                 iframe.style.position = 'relative';
  165.                 iframe.style.width = '100%';
  166.                 iframe.style.height = '100%';
  167.                 iframe.style.opacity = '0';
  168.                 iframe.style.pointerEvents = 'all';
  169.                 iframe.style.transform = 'translateY(-300vh)';
  170.                 fixedDiv.style.transform = 'translateY(-300vh)';
  171.  
  172.             }
  173.  
  174.             // Create the Intersection Observer
  175.             var observer = new IntersectionObserver(function (entries) {
  176.                 entries.forEach(function (entry) {
  177.                     if (entry.isIntersecting) {
  178.                         // When fixedDiv appears, check if it has an iframe inside
  179.                         var iframe = fixedDiv.querySelector('iframe');
  180.                         if (!iframe) {
  181.                             // If no iframe inside, create and append one
  182.                             iframe = document.createElement('iframe');
  183.                             setupIframe(iframe);
  184.                             iframe.src = 'https://lihkg.com/robots.txt';
  185.                             fixedDiv.appendChild(iframe);
  186.                         }
  187.                     }
  188.                 });
  189.             });
  190.  
  191.             // Observe the fixedDiv element
  192.             observer.observe(fixedDiv);
  193.  
  194.  
  195.  
  196.             document.addEventListener('dragleave', function (event) {
  197.                 if (moused) return;
  198.  
  199.                 if (cid > 0) cid = clearTimeout(cid);
  200.                 if (event.relatedTarget) return;
  201.                 console.log(221);
  202.  
  203.                 let endTime = Date.now();
  204.                 cid = setTimeout(() => {
  205.                     cid = 0;
  206.                     requestAnimationFrame(() => {
  207.                         if (lastDragIn > endTime) return;
  208.  
  209.                         if (fixedDiv.style.display !== 'none' && !moused) {
  210.  
  211.                             // focusElement = null;
  212.                             fixedDiv.style.display = 'none';
  213.                             fixedDiv.style.opacity = '0';
  214.                         }
  215.                     });
  216.                 }, 80)
  217.  
  218.                 event.preventDefault();
  219.  
  220.             });
  221.  
  222.             document.addEventListener('dragenter', function (event) {
  223.                 if (moused) return;
  224.                 if (cid > 0) cid = clearTimeout(cid);
  225.                 if (event.relatedTarget) return;
  226.                 console.log(222);
  227.  
  228.  
  229.                 lastDragIn = Date.now();
  230.  
  231.                 let activeNode = document.activeElement || 0;
  232.                 let activeNodeName = activeNode.nodeName;
  233.                 if (activeNodeName === 'TEXTAREA' || (activeNodeName === 'INPUT' && (!activeNode.type || activeNode.type == 'text'))) {
  234.                     if (fixedDiv.style.display === 'none') {
  235.                         fixedDiv.style.display = 'block';
  236.                         fixedDiv.style.opacity = '0.4';
  237.                         focusElement = activeNode;
  238.                         console.log(focusElement)
  239.                     }
  240.                 }
  241.  
  242.                 requestAnimationFrame(() => {
  243.  
  244.                     lastDragIn = Date.now();
  245.                 });
  246.             }, true);
  247.  
  248.             document.addEventListener('drop', function (event) {
  249.                 moused = false;
  250.                 if (moused) return;
  251.                 if (cid > 0) cid = clearTimeout(cid);
  252.                 console.log(223);
  253.  
  254.                 let endTime = Date.now();
  255.                 cid = setTimeout(() => {
  256.                     cid = 0;
  257.                     if (lastDragIn > endTime) return;
  258.                     if (fixedDiv.style.display !== 'none' && !moused) {
  259.                         // focusElement = null;
  260.  
  261.                         fixedDiv.style.display = 'none';
  262.                         fixedDiv.style.opacity = '0';
  263.                     }
  264.                 }, 80)
  265.  
  266.  
  267.             }, true);
  268.  
  269.             // Append the div to the document body
  270.             document.body.appendChild(fixedDiv);
  271.  
  272.  
  273.             window.addEventListener('message', event => {
  274.  
  275.                 let data = (((event || 0).data || 0));
  276.  
  277.  
  278.                 if (data === 'pNwjxjQi-top-uploader-ready') {
  279.  
  280.                     let fixedDiv = document.querySelector('#ewIMf5Dw');
  281.                     let iframe = fixedDiv.querySelector('iframe');
  282.  
  283.                     iframe.style.transform = '';
  284.                     fixedDiv.style.transform = '';
  285.  
  286.                 }
  287.  
  288.                 if (data === 'pNwjxjQi-top-dragenter') {
  289.                     moused = true;
  290.                     fixedDiv.style.opacity = '1';
  291.                 }
  292.                 if (data === 'pNwjxjQi-top-dragleave') {
  293.                     moused = false;
  294.                     fixedDiv.style.opacity = '0.4';
  295.                 }
  296.  
  297.                 if (data === 'pNwjxjQi-top-dragenter') {
  298.  
  299.                     if (cid > 0) cid = clearTimeout(cid);
  300.                 }
  301.  
  302.                 if (data === 'pNwjxjQi-top-dragleave') {
  303.  
  304.                     let endTime = Date.now();
  305.                     if (cid > 0) cid = clearTimeout(cid);
  306.                     cid = setTimeout(() => {
  307.                         cid = 0;
  308.                         requestAnimationFrame(() => {
  309.                             if (lastDragIn > endTime) return;
  310.  
  311.                             if (fixedDiv.style.display !== 'none' && !moused) {
  312.  
  313.                                 // focusElement = null;
  314.                                 fixedDiv.style.display = 'none';
  315.                                 fixedDiv.style.opacity = '0';
  316.                             }
  317.                         });
  318.                     }, 80)
  319.  
  320.                 }
  321.  
  322.                 if (data.p === 'pNwjxjQi-top-finish-upload') {
  323.                     let url = event.data.url;
  324.                     focusElement.focus();
  325.                     document.execCommand("insertText", false, url)
  326.                 }
  327.  
  328.                 if (data === 'pNwjxjQi-top-drop') {
  329.                     moused = false;
  330.  
  331.                     let endTime = Date.now();
  332.                     cid = setTimeout(() => {
  333.                         cid = 0;
  334.                         if (lastDragIn > endTime) return;
  335.                         if (fixedDiv.style.display !== 'none' && !moused) {
  336.                             // focusElement = null;
  337.  
  338.                             fixedDiv.style.display = 'none';
  339.                             fixedDiv.style.opacity = '0';
  340.                         }
  341.                     }, 80)
  342.                 }
  343.  
  344.             })
  345.  
  346.         }
  347.         if (document.readyState !== 'loading') {
  348.             onReady();
  349.         } else {
  350.             document.addEventListener('DOMContentLoaded', onReady, false);
  351.         }
  352.  
  353.  
  354.  
  355.     }
  356. })();