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LeetCode - 加回提交代码快捷键（Ctrl/Cmd + Enter）

参考：https://leetcode.com/discuss/general-discussion/136588/Is-there-any-keyboard-shortcut-to-run-code-and-submit-solution/346347

  1. // ==UserScript==
  2. // @name              LeetCode - Bring back Submit Code shortcut (Ctrl/Cmd + Enter)
  3. // @name:zh-CN        LeetCode - 加回提交代码快捷键（Ctrl/Cmd + Enter）
  4. // @name:zh-HK        LeetCode - 加回提交代碼快捷鍵（Ctrl/Cmd + Enter）
  5. // @name:zh-TW        LeetCode - 加回提交代碼快捷鍵（Ctrl/Cmd + Enter）
  6. // @description        See: https://leetcode.com/discuss/general-discussion/136588/Is-there-any-keyboard-shortcut-to-run-code-and-submit-solution/346347
  7. // @description:zh-CN 参考：https://leetcode.com/discuss/general-discussion/136588/Is-there-any-keyboard-shortcut-to-run-code-and-submit-solution/346347
  8. // @description:zh-HK 參考：https://leetcode.com/discuss/general-discussion/136588/Is-there-any-keyboard-shortcut-to-run-code-and-submit-solution/346347
  9. // @description:zh-TW 參考：https://leetcode.com/discuss/general-discussion/136588/Is-there-any-keyboard-shortcut-to-run-code-and-submit-solution/346347
  10. // @namespace         RainSlide
  11. // @author            RainSlide
  12. // @icon              https://assets.leetcode.com/static_assets/public/icons/favicon-192x192.png
  13. // @version           1.0
  14. // @match             *://leetcode.com/problems/*
  15. // @grant             none
  16. // ==/UserScript==
  17.  
  18. "use strict";
  19.  
  20. const debug = msg => console.debug("[LeetCode - Submit Code shortcut] ".conact(msg));
  21.  
  22. const addShortcut = () => {
  23.  
  24. const codeArea = document.querySelector('div[data-cy="code-area"]');
  25. if (codeArea !== null) {
  26.  
  27. 	// see: https://developer.mozilla.org/en-US/docs/Web/CSS/%3Ascope
  28. 	const selectInCodeArea = selector =>
  29. 		codeArea.querySelector(':scope '.concat(selector));
  30.  
  31. const submitButton = selectInCodeArea('button[data-cy="submit-code-btn"]');
  32. if (submitButton !== null) {
  33.  
  34. 	// see: https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent
  35. 	document.addEventListener(
  36. 		"keydown", event => {
  37. 			if (
  38. 				event.key === "Enter" && (
  39. 					event.ctrlKey === true || event.metaKey === true
  40. 				)
  41. 			) {
  42. 				event.preventDefault();
  43. 				submitButton.click();
  44. 			}
  45. 		}
  46. 	);
  47.  
  48. const shortcutsButton = selectInCodeArea('button[icon="information"]');
  49. if (shortcutsButton !== null) {
  50.  
  51. 	const addShortcutEntry = () => {
  52.  
  53. 		// select div[class^="shortcut__"] which is:
  54. 			// in a Ant modal titled with "Editor Shortcuts"
  55. 			/* has div[class^="shortcut-description__"] and
  56. 			   div[class^="shortcut-keystrokes__"] as 1st & 2nd child */
  57.  
  58. 		// see: https://devhints.io/xpath
  59. 		const result = new XPathEvaluator().createExpression(
  60. 			`//div[@class="ant-modal-content"][
  61. 				./div[@class="ant-modal-header"]
  62. 				//span[text()="Editor Shortcuts"]
  63. 			]/div[@class="ant-modal-body"]
  64. 			//div[starts-with(@class,"shortcut__")][
  65. 				./div[1][starts-with(@class,"shortcut-description__")] and
  66. 				./div[2][starts-with(@class,"shortcut-keystrokes__")]
  67. 			]` // .replace(/\n\s+/g, "")
  68. 		).evaluate(
  69. 			document.body, XPathResult.FIRST_ORDERED_NODE_TYPE
  70. 		);
  71.  
  72. 		/* <div class="shortcut__1GGr">
  73. 			<div class="shortcut-description__23fr">Run code</div>
  74. 			<div class="shortcut-keystrokes__3HcT">CTRL + '</div>
  75. 		</div> */
  76.  
  77. 		const shortcut = result.singleNodeValue;
  78. 		if (shortcut !== null) {
  79. 			const submitShortcut = shortcut.cloneNode(true);
  80. 			submitShortcut.children[0].textContent = "Submit Code";
  81. 			submitShortcut.children[1].textContent = "Ctrl + Enter";
  82. 			shortcut.parentNode.insertBefore(submitShortcut, shortcut);
  83. 		} else debug("shortcut not found");
  84.  
  85. 	};
  86.  
  87. 	// use setTimeout(func, 0) to delay the exec of func
  88. 	// see:
  89. 		// https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Asynchronous/Timeouts_and_intervals#settimeout
  90. 		// https://stackoverflow.com/questions/779379
  91. 		// https://stackoverflow.com/questions/33955650
  92. 	shortcutsButton.addEventListener(
  93. 		"click", () => setTimeout(addShortcutEntry, 0), { once: true }
  94. 	);
  95.  
  96. } else debug("shortcutsButton not found");
  97. } else debug("submitButton not found, won't add shortcut");
  98. } else debug("codeArea not found, won't add shortcut");
  99.  
  100. };
  101.  
  102. const loading = document.querySelector("body > #initial-loading");
  103. if (loading !== null) {
  104.  
  105. 	// run addShortcut() when #initial-loading is removed
  106. 	// see:
  107. 		// https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver
  108. 		// https://developer.mozilla.org/en-US/docs/Web/API/MutationObserverInit
  109. 	new MutationObserver(
  110. 		(mutationList, observer) => mutationList.forEach(
  111. 			mutation => {
  112. 				if ( Array.from(mutation.removedNodes).includes(loading) ) {
  113. 					addShortcut();
  114. 					observer.disconnect();
  115. 				}
  116. 				/* const nodes = mutation.removedNodes;
  117. 				if (nodes instanceof NodeList && nodes.length > 0) {
  118. 					for (const node of nodes) {
  119. 						if (node.id === "initial-loading") {
  120. 							addShortcut();
  121. 							observer.disconnect();
  122. 							break;
  123. 						}
  124. 					}
  125. 				} */
  126. 			}
  127. 		)
  128. 	).observe(
  129. 		document.body, { childList: true }
  130. 	);
  131.  
  132. } else {
  133. 	debug("loading not found");
  134. 	addShortcut();
  135. }