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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      0.1.5
  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.                 let xhr = new XMLHttpRequest();
  26.                 let 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.                             let response = JSON.parse(xhr.responseText);
  35.                             let status = response.status;
  36.                             let url = response.url;
  37.                             let 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.             let 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.             let fixedDiv = null;
  129.  
  130.             let focusElement = null;
  131.  
  132.             let moused = false;
  133.  
  134.             let lastDragIn = 0;
  135.             let cid = 0;
  136.  
  137.  
  138.             function createFixedDiv() {
  139.  
  140.  
  141.                 // Create the fixed div element
  142.                 let fixedDiv = document.createElement('div');
  143.                 fixedDiv.style.position = 'fixed';
  144.                 fixedDiv.style.zIndex = '8888';
  145.                 fixedDiv.style.bottom = '10px';
  146.                 fixedDiv.style.right = '10px';
  147.                 fixedDiv.style.width = '200px';
  148.                 fixedDiv.style.height = '200px';
  149.                 fixedDiv.style.backgroundColor = 'rgba(0, 0, 0, 0.5)';
  150.                 fixedDiv.style.border = '2px solid white';
  151.                 fixedDiv.style.borderRadius = '5px';
  152.                 fixedDiv.style.padding = '0px';
  153.                 fixedDiv.style.color = 'white';
  154.                 fixedDiv.style.fontSize = '14px';
  155.                 fixedDiv.style.textAlign = 'center';
  156.                 //    fixedDiv.style.cursor = 'move';
  157.                 // fixedDiv.draggable = true;
  158.                 fixedDiv.style.opacity = '0'; // Set initial opacity to 0 (hidden)
  159.                 fixedDiv.style.display = 'none';
  160.                 fixedDiv.id = 'ewIMf5Dw';
  161.                 fixedDiv.style.background = 'url(https://static.thenounproject.com/png/3905046-200.png)';
  162.                 fixedDiv.style.backgroundPosition = 'center';
  163.                 fixedDiv.style.backgroundSize = 'cover';
  164.                 fixedDiv.style.backgroundRepeat = 'no-repeat';
  165.  
  166.                 fixedDiv.style.pointerEvents = 'none';
  167.  
  168.                 // Append the div to the document body
  169.                 document.body.appendChild(fixedDiv);
  170.  
  171.                 // Create the Intersection Observer
  172.                 let observer = new IntersectionObserver(function (entries) {
  173.                     entries.forEach(function (entry) {
  174.                         if (entry.isIntersecting) {
  175.                             // When fixedDiv appears, check if it has an iframe inside
  176.                             let iframe = fixedDiv.querySelector('iframe');
  177.                             if (!iframe) {
  178.                                 // If no iframe inside, create and append one
  179.                                 iframe = document.createElement('iframe');
  180.                                 setupIframe(iframe);
  181.                                 iframe.src = 'https://lihkg.com/robots.txt';
  182.                                 fixedDiv.appendChild(iframe);
  183.                             }
  184.                         }
  185.                     });
  186.                 });
  187.  
  188.                 // Observe the fixedDiv element
  189.                 observer.observe(fixedDiv);
  190.  
  191.                 return fixedDiv;
  192.             }
  193.             function setupIframe(iframe) {
  194.                 if (!fixedDiv) return;
  195.                 iframe.name = 'pNwjxjQi';
  196.  
  197.                 iframe.style.position = 'relative';
  198.                 iframe.style.width = '100%';
  199.                 iframe.style.height = '100%';
  200.                 iframe.style.opacity = '0';
  201.                 iframe.style.pointerEvents = 'all';
  202.                 iframe.style.transform = 'translateY(-300vh)';
  203.                 fixedDiv.style.transform = 'translateY(-300vh)';
  204.  
  205.             }
  206.  
  207.  
  208.  
  209.  
  210.             document.addEventListener('dragleave', function (event) {
  211.                 if (!fixedDiv) return;
  212.                 if (moused) return;
  213.  
  214.                 if (cid > 0) cid = clearTimeout(cid);
  215.                 if (event.relatedTarget) return;
  216.                 console.log(221);
  217.  
  218.                 let endTime = Date.now();
  219.                 cid = setTimeout(() => {
  220.                     cid = 0;
  221.                     requestAnimationFrame(() => {
  222.                         if (lastDragIn > endTime) return;
  223.  
  224.                         if (fixedDiv.style.display !== 'none' && !moused) {
  225.  
  226.                             // focusElement = null;
  227.                             fixedDiv.style.display = 'none';
  228.                             fixedDiv.style.opacity = '0';
  229.                         }
  230.                     });
  231.                 }, 80)
  232.  
  233.                 event.preventDefault();
  234.  
  235.             });
  236.  
  237.             document.addEventListener('dragenter', function (event) {
  238.                 if (!fixedDiv) fixedDiv = createFixedDiv();
  239.                 if (moused) return;
  240.                 if (cid > 0) cid = clearTimeout(cid);
  241.                 if (event.relatedTarget) return;
  242.                 console.log(222);
  243.  
  244.  
  245.                 lastDragIn = Date.now();
  246.  
  247.                 let activeNode = document.activeElement || 0;
  248.                 let activeNodeName = activeNode.nodeName;
  249.                 if (activeNodeName === 'TEXTAREA' || (activeNodeName === 'INPUT' && (!activeNode.type || activeNode.type == 'text'))) {
  250.                     if (fixedDiv.style.display === 'none') {
  251.                         fixedDiv.style.display = 'block';
  252.                         fixedDiv.style.opacity = '0.4';
  253.                         focusElement = activeNode;
  254.                         console.log(focusElement)
  255.                     }
  256.                 }
  257.  
  258.                 requestAnimationFrame(() => {
  259.  
  260.                     lastDragIn = Date.now();
  261.                 });
  262.             }, true);
  263.  
  264.             document.addEventListener('drop', function (event) {
  265.                 if (!fixedDiv) return;
  266.                 moused = false;
  267.                 if (moused) return;
  268.                 if (cid > 0) cid = clearTimeout(cid);
  269.                 console.log(223);
  270.  
  271.                 let endTime = Date.now();
  272.                 cid = setTimeout(() => {
  273.                     cid = 0;
  274.                     if (lastDragIn > endTime) return;
  275.                     if (fixedDiv.style.display !== 'none' && !moused) {
  276.                         // focusElement = null;
  277.  
  278.                         fixedDiv.style.display = 'none';
  279.                         fixedDiv.style.opacity = '0';
  280.                     }
  281.                 }, 80)
  282.  
  283.  
  284.             }, true);
  285.  
  286.  
  287.  
  288.             window.addEventListener('message', event => {
  289.                 if (!fixedDiv) return;
  290.  
  291.                 let data = (((event || 0).data || 0));
  292.  
  293.  
  294.                 if (data === 'pNwjxjQi-top-uploader-ready') {
  295.  
  296.                     let fixedDiv = document.querySelector('#ewIMf5Dw');
  297.                     let iframe = fixedDiv.querySelector('iframe');
  298.  
  299.                     iframe.style.transform = '';
  300.                     fixedDiv.style.transform = '';
  301.  
  302.                 }
  303.  
  304.                 if (data === 'pNwjxjQi-top-dragenter') {
  305.                     moused = true;
  306.                     fixedDiv.style.opacity = '1';
  307.                 }
  308.                 if (data === 'pNwjxjQi-top-dragleave') {
  309.                     moused = false;
  310.                     fixedDiv.style.opacity = '0.4';
  311.                 }
  312.  
  313.                 if (data === 'pNwjxjQi-top-dragenter') {
  314.  
  315.                     if (cid > 0) cid = clearTimeout(cid);
  316.                 }
  317.  
  318.                 if (data === 'pNwjxjQi-top-dragleave') {
  319.  
  320.                     let endTime = Date.now();
  321.                     if (cid > 0) cid = clearTimeout(cid);
  322.                     cid = setTimeout(() => {
  323.                         cid = 0;
  324.                         requestAnimationFrame(() => {
  325.                             if (lastDragIn > endTime) return;
  326.  
  327.                             if (fixedDiv.style.display !== 'none' && !moused) {
  328.  
  329.                                 // focusElement = null;
  330.                                 fixedDiv.style.display = 'none';
  331.                                 fixedDiv.style.opacity = '0';
  332.                             }
  333.                         });
  334.                     }, 80)
  335.  
  336.                 }
  337.  
  338.                 if (data.p === 'pNwjxjQi-top-finish-upload') {
  339.                     let url = event.data.url;
  340.                     focusElement.focus();
  341.                     document.execCommand("insertText", false, url)
  342.                 }
  343.  
  344.                 if (data === 'pNwjxjQi-top-drop') {
  345.                     moused = false;
  346.  
  347.                     let endTime = Date.now();
  348.                     cid = setTimeout(() => {
  349.                         cid = 0;
  350.                         if (lastDragIn > endTime) return;
  351.                         if (fixedDiv.style.display !== 'none' && !moused) {
  352.                             // focusElement = null;
  353.  
  354.                             fixedDiv.style.display = 'none';
  355.                             fixedDiv.style.opacity = '0';
  356.                         }
  357.                     }, 80)
  358.                 }
  359.  
  360.             })
  361.  
  362.         }
  363.         if (document.readyState !== 'loading') {
  364.             onReady();
  365.         } else {
  366.             document.addEventListener('DOMContentLoaded', onReady, false);
  367.         }
  368.  
  369.  
  370.  
  371.     }
  372. })();