From 893f2a79016b81f3cb2748183e28caf59f9524a6 Mon Sep 17 00:00:00 2001
From: Michael Schmidt <mitchi5000.ms@googlemail.com>
Date: Tue, 7 Apr 2020 17:27:26 +0200
Subject: [PATCH] Line numbers: Exposed `_resizeElement` function (#2288)

---
 plugins/line-numbers/prism-line-numbers.js     | 18 ++++++++++++++----
 plugins/line-numbers/prism-line-numbers.min.js |  2 +-
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/plugins/line-numbers/prism-line-numbers.js b/plugins/line-numbers/prism-line-numbers.js
index 7ab1dc046b..b2e3147584 100644
--- a/plugins/line-numbers/prism-line-numbers.js
+++ b/plugins/line-numbers/prism-line-numbers.js
@@ -138,10 +138,10 @@
 	 */
 	Prism.plugins.lineNumbers = {
 		/**
-		 * Get node for provided line number
-		 * @param {Element} element pre element
-		 * @param {Number} number line number
-		 * @return {Element|undefined}
+		 * Returns the node of the given line number in the given element.
+		 * @param {Element} element A `<pre>` element with line numbers.
+		 * @param {Number} number
+		 * @returns {Element | undefined}
 		 */
 		getLine: function (element, number) {
 			if (element.tagName !== 'PRE' || !element.classList.contains(PLUGIN_NAME)) {
@@ -162,6 +162,16 @@
 			var lineIndex = number - lineNumberStart;
 
 			return lineNumberRows.children[lineIndex];
+		},
+		/**
+		 * Resizes the line numbers of the given element.
+		 *
+		 * This function will not add line numbers. It will only resize existing ones.
+		 * @param {Element} element A `<pre>` element with line numbers.
+		 * @returns {void}
+		 */
+		resize: function (element) {
+			_resizeElement(element);
 		}
 	};
 
diff --git a/plugins/line-numbers/prism-line-numbers.min.js b/plugins/line-numbers/prism-line-numbers.min.js
index ca84bbe3e9..59fc41d37e 100644
--- a/plugins/line-numbers/prism-line-numbers.min.js
+++ b/plugins/line-numbers/prism-line-numbers.min.js
@@ -1 +1 @@
-!function(){if("undefined"!=typeof self&&self.Prism&&self.document){var l="line-numbers",c=/\n(?!$)/g,m=function(e){var t=a(e)["white-space"];if("pre-wrap"===t||"pre-line"===t){var n=e.querySelector("code"),r=e.querySelector(".line-numbers-rows"),s=e.querySelector(".line-numbers-sizer"),i=n.textContent.split(c);s||((s=document.createElement("span")).className="line-numbers-sizer",n.appendChild(s)),s.style.display="block",i.forEach(function(e,t){s.textContent=e||"\n";var n=s.getBoundingClientRect().height;r.children[t].style.height=n+"px"}),s.textContent="",s.style.display="none"}},a=function(e){return e?window.getComputedStyle?getComputedStyle(e):e.currentStyle||null:null};window.addEventListener("resize",function(){Array.prototype.forEach.call(document.querySelectorAll("pre."+l),m)}),Prism.hooks.add("complete",function(e){if(e.code){var t=e.element,n=t.parentNode;if(n&&/pre/i.test(n.nodeName)&&!t.querySelector(".line-numbers-rows")){for(var r=!1,s=/(?:^|\s)line-numbers(?:\s|$)/,i=t;i;i=i.parentNode)if(s.test(i.className)){r=!0;break}if(r){t.className=t.className.replace(s," "),s.test(n.className)||(n.className+=" line-numbers");var l,a=e.code.match(c),o=a?a.length+1:1,u=new Array(o+1).join("<span></span>");(l=document.createElement("span")).setAttribute("aria-hidden","true"),l.className="line-numbers-rows",l.innerHTML=u,n.hasAttribute("data-start")&&(n.style.counterReset="linenumber "+(parseInt(n.getAttribute("data-start"),10)-1)),e.element.appendChild(l),m(n),Prism.hooks.run("line-numbers",e)}}}}),Prism.hooks.add("line-numbers",function(e){e.plugins=e.plugins||{},e.plugins.lineNumbers=!0}),Prism.plugins.lineNumbers={getLine:function(e,t){if("PRE"===e.tagName&&e.classList.contains(l)){var n=e.querySelector(".line-numbers-rows"),r=parseInt(e.getAttribute("data-start"),10)||1,s=r+(n.children.length-1);t<r&&(t=r),s<t&&(t=s);var i=t-r;return n.children[i]}}}}}();
\ No newline at end of file
+!function(){if("undefined"!=typeof self&&self.Prism&&self.document){var l="line-numbers",c=/\n(?!$)/g,m=function(e){var t=a(e)["white-space"];if("pre-wrap"===t||"pre-line"===t){var n=e.querySelector("code"),r=e.querySelector(".line-numbers-rows"),s=e.querySelector(".line-numbers-sizer"),i=n.textContent.split(c);s||((s=document.createElement("span")).className="line-numbers-sizer",n.appendChild(s)),s.style.display="block",i.forEach(function(e,t){s.textContent=e||"\n";var n=s.getBoundingClientRect().height;r.children[t].style.height=n+"px"}),s.textContent="",s.style.display="none"}},a=function(e){return e?window.getComputedStyle?getComputedStyle(e):e.currentStyle||null:null};window.addEventListener("resize",function(){Array.prototype.forEach.call(document.querySelectorAll("pre."+l),m)}),Prism.hooks.add("complete",function(e){if(e.code){var t=e.element,n=t.parentNode;if(n&&/pre/i.test(n.nodeName)&&!t.querySelector(".line-numbers-rows")){for(var r=!1,s=/(?:^|\s)line-numbers(?:\s|$)/,i=t;i;i=i.parentNode)if(s.test(i.className)){r=!0;break}if(r){t.className=t.className.replace(s," "),s.test(n.className)||(n.className+=" line-numbers");var l,a=e.code.match(c),o=a?a.length+1:1,u=new Array(o+1).join("<span></span>");(l=document.createElement("span")).setAttribute("aria-hidden","true"),l.className="line-numbers-rows",l.innerHTML=u,n.hasAttribute("data-start")&&(n.style.counterReset="linenumber "+(parseInt(n.getAttribute("data-start"),10)-1)),e.element.appendChild(l),m(n),Prism.hooks.run("line-numbers",e)}}}}),Prism.hooks.add("line-numbers",function(e){e.plugins=e.plugins||{},e.plugins.lineNumbers=!0}),Prism.plugins.lineNumbers={getLine:function(e,t){if("PRE"===e.tagName&&e.classList.contains(l)){var n=e.querySelector(".line-numbers-rows"),r=parseInt(e.getAttribute("data-start"),10)||1,s=r+(n.children.length-1);t<r&&(t=r),s<t&&(t=s);var i=t-r;return n.children[i]}},resize:function(e){m(e)}}}}();
\ No newline at end of file