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session","require":"bash","owner":"RunDevelopment"},"smalltalk":{"title":"Smalltalk","owner":"Golmote"},"smarty":{"title":"Smarty","require":"markup-templating","owner":"Golmote"},"sql":{"title":"SQL","owner":"multipetros"},"soy":{"title":"Soy (Closure Template)","require":"markup-templating","owner":"Golmote"},"stylus":{"title":"Stylus","owner":"vkbansal"},"swift":{"title":"Swift","require":"clike","owner":"chrischares"},"tap":{"title":"TAP","owner":"isaacs","require":"yaml"},"tcl":{"title":"Tcl","owner":"PeterChaplin"},"textile":{"title":"Textile","require":"markup","peerDependencies":"css","owner":"Golmote"},"toml":{"title":"TOML","owner":"RunDevelopment"},"tt2":{"title":"Template Toolkit 2","require":["clike","markup-templating"],"owner":"gflohr"},"twig":{"title":"Twig","require":"markup","owner":"brandonkelly"},"typescript":{"title":"TypeScript","require":"javascript","alias":"ts","owner":"vkbansal"},"t4-cs":{"title":"T4 Text Templates (C#)","require":["t4-templating","csharp"],"alias":"t4","owner":"RunDevelopment"},"t4-vb":{"title":"T4 Text Templates (VB)","require":["t4-templating","visual-basic"],"owner":"RunDevelopment"},"t4-templating":{"title":"T4 templating","owner":"RunDevelopment"},"vala":{"title":"Vala","require":"clike","owner":"TemplarVolk"},"vbnet":{"title":"VB.Net","require":"basic","owner":"Bigsby"},"velocity":{"title":"Velocity","require":"markup","owner":"Golmote"},"verilog":{"title":"Verilog","owner":"a-rey"},"vhdl":{"title":"VHDL","owner":"a-rey"},"vim":{"title":"vim","owner":"westonganger"},"visual-basic":{"title":"Visual Basic","alias":"vb","owner":"Golmote"},"wasm":{"title":"WebAssembly","owner":"Golmote"},"wiki":{"title":"Wiki markup","require":"markup","owner":"Golmote"},"xeora":{"title":"Xeora","require":"markup","alias":"xeoracube","aliasTitles":{"xeoracube":"XeoraCube"},"owner":"freakmaxi"},"xojo":{"title":"Xojo (REALbasic)","owner":"Golmote"},"xquery":{"title":"XQuery","require":"markup","owner":"Golmote"},"yaml":{"title":"YAML","alias":"yml","owner":"hason"}},"plugins":{"meta":{"path":"plugins/{id}/prism-{id}","link":"plugins/{id}/"},"line-highlight":"Line Highlight","line-numbers":{"title":"Line Numbers","owner":"kuba-kubula"},"show-invisibles":{"title":"Show Invisibles","after":["autolinker","data-uri-highlight"]},"autolinker":"Autolinker","wpd":"WebPlatform Docs","custom-class":{"title":"Custom Class","owner":"dvkndn","noCSS":true},"file-highlight":{"title":"File Highlight","noCSS":true},"show-language":{"title":"Show Language","owner":"nauzilus","noCSS":true,"require":"toolbar"},"jsonp-highlight":{"title":"JSONP Highlight","noCSS":true,"owner":"nauzilus"},"highlight-keywords":{"title":"Highlight Keywords","owner":"vkbansal","noCSS":true},"remove-initial-line-feed":{"title":"Remove initial line feed","owner":"Golmote","noCSS":true},"previewers":{"title":"Previewers","owner":"Golmote"},"autoloader":{"title":"Autoloader","owner":"Golmote","noCSS":true},"keep-markup":{"title":"Keep Markup","owner":"Golmote","after":"normalize-whitespace","noCSS":true},"command-line":{"title":"Command Line","owner":"chriswells0"},"unescaped-markup":"Unescaped Markup","normalize-whitespace":{"title":"Normalize Whitespace","owner":"zeitgeist87","after":"unescaped-markup","noCSS":true},"data-uri-highlight":{"title":"Data-URI Highlight","owner":"Golmote","noCSS":true},"toolbar":{"title":"Toolbar","owner":"mAAdhaTTah"},"copy-to-clipboard":{"title":"Copy to Clipboard Button","owner":"mAAdhaTTah","require":"toolbar","noCSS":true},"match-braces":{"title":"Match braces","owner":"RunDevelopment"}}}; if (typeof module !== 'undefined' && module.exports) { module.exports = components; } \ No newline at end of file diff --git a/components.json b/components.json index 2f8c5a6080..c7a2ffad24 100644 --- a/components.json +++ b/components.json @@ -1040,6 +1040,10 @@ "owner": "mAAdhaTTah", "require": "toolbar", "noCSS": true + }, + "match-braces": { + "title": "Match braces", + "owner": "RunDevelopment" } } } diff --git a/plugins/match-braces/index.html b/plugins/match-braces/index.html new file mode 100644 index 0000000000..ac6a79a1ef --- /dev/null +++ b/plugins/match-braces/index.html @@ -0,0 +1,75 @@ + + + + + + +Match braces ▲ Prism plugins + + + + + + + + + + + +
+
+ +

Match braces

+

Highlights matching braces.

+
+ +
+

How to use

+ +

To enable this plugin add the match-braces class to a code block:

+ + 
<pre><code class="language-xxxx match-braces">...</pre></code>
+ +

Just like language-xxxx, the match-braces class is inherited, so you can add the class to the <body> to enable the plugin for the whole page.

+ +

The plugin will highlight brace pairs when the cursor hovers over one of the braces. The highlighting effect will disappear as soon as the cursor leaves the brace pair.
+ The hover effect can be disabled by adding the no-brace-hover to the code block. This class can also be inherited.

+ +

You can also click on a brace to select the brace pair. To deselect the pair, click anywhere within the code block or select another pair.
+ The selection effect can be disabled by adding the no-brace-select to the code block. This class can also be + inherited.

+ +

Rainbow braces 🌈

+ +

To enable rainbow braces, simply add the rainbow-braces class to a code block. This class can also get inherited.

+
+ +
+

Examples

+ +

JavaScript

+ 

+
+	
Lisp

+	
(defun factorial (n)
+	(if (= n 0) 1
+		(* n (factorial (- n 1)))))

+
+	
Lisp with rainbow braces 🌈 but without hover

+	
(defun factorial (n)
+	(if (= n 0) 1
+		(* n (factorial (- n 1)))))

+

+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/plugins/match-braces/prism-match-braces.css b/plugins/match-braces/prism-match-braces.css
new file mode 100644
index 0000000000..9ca6981da3
--- /dev/null
+++ b/plugins/match-braces/prism-match-braces.css
@@ -0,0 +1,29 @@
+.token.punctuation.brace-hover,
+.token.punctuation.brace-selected {
+	outline: solid 1px;
+}
+
+.rainbow-braces .token.punctuation.brace-level-1,
+.rainbow-braces .token.punctuation.brace-level-5,
+.rainbow-braces .token.punctuation.brace-level-9 {
+	color: #E50;
+	opacity: 1;
+}
+.rainbow-braces .token.punctuation.brace-level-2,
+.rainbow-braces .token.punctuation.brace-level-6,
+.rainbow-braces .token.punctuation.brace-level-10 {
+	color: #0B3;
+	opacity: 1;
+}
+.rainbow-braces .token.punctuation.brace-level-3,
+.rainbow-braces .token.punctuation.brace-level-7,
+.rainbow-braces .token.punctuation.brace-level-11 {
+	color: #26F;
+	opacity: 1;
+}
+.rainbow-braces .token.punctuation.brace-level-4,
+.rainbow-braces .token.punctuation.brace-level-8,
+.rainbow-braces .token.punctuation.brace-level-12 {
+	color: #E0E;
+	opacity: 1;
+}
diff --git a/plugins/match-braces/prism-match-braces.js b/plugins/match-braces/prism-match-braces.js
new file mode 100644
index 0000000000..9233e1962c
--- /dev/null
+++ b/plugins/match-braces/prism-match-braces.js
@@ -0,0 +1,180 @@
+(function () {
+
+	if (typeof self === 'undefined' || !self.Prism || !self.document) {
+		return;
+	}
+
+	var MATCH_ALL_CLASS = /(?:^|\s)match-braces(?:\s|$)/;
+
+	var BRACE_HOVER_CLASS = /(?:^|\s)brace-hover(?:\s|$)/;
+	var BRACE_SELECTED_CLASS = /(?:^|\s)brace-selected(?:\s|$)/;
+
+	var NO_BRACE_HOVER_CLASS = /(?:^|\s)no-brace-hover(?:\s|$)/;
+	var NO_BRACE_SELECT_CLASS = /(?:^|\s)no-brace-select(?:\s|$)/;
+
+	var PARTNER = {
+		'(': ')',
+		'[': ']',
+		'{': '}',
+	};
+
+	var NAMES = {
+		'(': 'brace-round',
+		'[': 'brace-square',
+		'{': 'brace-curly',
+	};
+
+	var LEVEL_WARP = 12;
+
+	var pairIdCounter = 0;
+
+	/**
+	 * Returns the brace partner given one brace of a brace pair.
+	 *
+	 * @param {HTMLElement} brace
+	 * @returns {HTMLElement}
+	 */
+	function getPartnerBrace(brace) {
+		var match = /^(pair-\d+-)(open|close)$/.exec(brace.id);
+		return document.querySelector('#' + match[1] + (match[2] == 'open' ? 'close' : 'open'));
+	}
+
+	/**
+	 * @this {HTMLElement}
+	 */
+	function hoverBrace() {
+		for (var parent = this.parentElement; parent; parent = parent.parentElement) {
+			if (NO_BRACE_HOVER_CLASS.test(parent.className)) {
+				return;
+			}
+		}
+
+		[this, getPartnerBrace(this)].forEach(function (ele) {
+			ele.className = (ele.className.replace(BRACE_HOVER_CLASS, ' ') + ' brace-hover').replace(/\s+/g, ' ');
+		});
+	}
+	/**
+	 * @this {HTMLElement}
+	 */
+	function leaveBrace() {
+		[this, getPartnerBrace(this)].forEach(function (ele) {
+			ele.className = ele.className.replace(BRACE_HOVER_CLASS, ' ');
+		});
+	}
+	/**
+	 * @this {HTMLElement}
+	 */
+	function clickBrace() {
+		for (var parent = this.parentElement; parent; parent = parent.parentElement) {
+			if (NO_BRACE_SELECT_CLASS.test(parent.className)) {
+				return;
+			}
+		}
+
+		[this, getPartnerBrace(this)].forEach(function (ele) {
+			ele.className = (ele.className.replace(BRACE_SELECTED_CLASS, ' ') + ' brace-selected').replace(/\s+/g, ' ');
+		});
+	}
+
+	Prism.hooks.add('complete', function (env) {
+
+		/** @type {HTMLElement} */
+		var code = env.element;
+		var pre = code.parentElement;
+
+		if (!pre || pre.tagName != 'PRE') {
+			return;
+		}
+
+		// find the braces to match
+		/** @type {string[]} */
+		var toMatch = [];
+		for (var ele = code; ele; ele = ele.parentElement) {
+			if (MATCH_ALL_CLASS.test(ele.className)) {
+				toMatch.push('(', '[', '{');
+				break;
+			}
+		}
+
+		if (toMatch.length == 0) {
+			// nothing to match
+			return;
+		}
+
+		if (!pre.__listenerAdded) {
+			// code blocks might be highlighted more than once
+			pre.addEventListener('mousedown', function removeBraceSelected() {
+				// the code element might have been replaced
+				var code = pre.querySelector('code');
+				Array.prototype.slice.call(code.querySelectorAll('.brace-selected')).forEach(function (element) {
+					element.className = element.className.replace(BRACE_SELECTED_CLASS, ' ');
+				});
+			});
+			Object.defineProperty(pre, '__listenerAdded', { value: true });
+		}
+
+		/** @type {HTMLSpanElement[]} */
+		var punctuation = Array.prototype.slice.call(code.querySelectorAll('span.token.punctuation'));
+
+		/** @type {{ index: number, open: boolean, element: HTMLElement }[]} */
+		var allBraces = [];
+
+		toMatch.forEach(function (open) {
+			var close = PARTNER[open];
+			var name = NAMES[open];
+
+			/** @type {[number, number][]} */
+			var pairs = [];
+			/** @type {number[]} */
+			var openStack = [];
+
+			for (var i = 0; i < punctuation.length; i++) {
+				var element = punctuation[i];
+				var text = element.textContent;
+				if (text === open) {
+					allBraces.push({ index: i, open: true, element: element });
+					element.className += ' ' + name;
+					element.className += ' brace-open';
+					openStack.push(i);
+				} else if (text === close) {
+					allBraces.push({ index: i, open: false, element: element });
+					element.className += ' ' + name;
+					element.className += ' brace-close';
+					if (openStack.length) {
+						pairs.push([i, openStack.pop()]);
+					}
+				}
+			}
+
+			pairs.forEach(function (pair) {
+				var pairId = 'pair-' + (pairIdCounter++) + '-';
+
+				var openEle = punctuation[pair[0]];
+				var closeEle = punctuation[pair[1]];
+
+				openEle.id = pairId + 'open';
+				closeEle.id = pairId + 'close';
+
+				[openEle, closeEle].forEach(function (ele) {
+					ele.addEventListener('mouseenter', hoverBrace);
+					ele.addEventListener('mouseleave', leaveBrace);
+					ele.addEventListener('click', clickBrace);
+				});
+			});
+		});
+
+		var level = 0;
+		allBraces.sort(function (a, b) { return a.index - b.index; });
+		allBraces.forEach(function (brace) {
+			if (brace.open) {
+				brace.element.className += ' brace-level-' + (level % LEVEL_WARP + 1);
+				level++;
+			} else {
+				level = Math.max(0, level - 1);
+				brace.element.className += ' brace-level-' + (level % LEVEL_WARP + 1);
+			}
+		});
+
+	});
+
+}());
diff --git a/plugins/match-braces/prism-match-braces.min.js b/plugins/match-braces/prism-match-braces.min.js
new file mode 100644
index 0000000000..4e3453999f
--- /dev/null
+++ b/plugins/match-braces/prism-match-braces.min.js
@@ -0,0 +1 @@
+!function(){if("undefined"!=typeof self&&self.Prism&&self.document){var c=/(?:^|\s)match-braces(?:\s|$)/,a=/(?:^|\s)brace-hover(?:\s|$)/,l=/(?:^|\s)brace-selected(?:\s|$)/,n=/(?:^|\s)no-brace-hover(?:\s|$)/,r=/(?:^|\s)no-brace-select(?:\s|$)/,u={"(":")","[":"]","{":"}"},f={"(":"brace-round","[":"brace-square","{":"brace-curly"},m=0;Prism.hooks.add("complete",function(e){var a=e.element,n=a.parentElement;if(n&&"PRE"==n.tagName){for(var r=[],t=a;t;t=t.parentElement)if(c.test(t.className)){r.push("(","[","{");break}if(0!=r.length){n.__listenerAdded||(n.addEventListener("mousedown",function(){var e=n.querySelector("code");Array.prototype.slice.call(e.querySelectorAll(".brace-selected")).forEach(function(e){e.className=e.className.replace(l," ")})}),Object.defineProperty(n,"__listenerAdded",{value:!0}));var o=Array.prototype.slice.call(a.querySelectorAll("span.token.punctuation")),i=[];r.forEach(function(e){for(var a=u[e],n=f[e],r=[],t=[],s=0;s
Date: Sat, 15 Jun 2019 19:21:48 +0200
Subject: [PATCH 2/3] Added child element fix

---
 plugins/match-braces/prism-match-braces.js    | 26 ++++++++++---------
 .../match-braces/prism-match-braces.min.js    |  2 +-
 2 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/plugins/match-braces/prism-match-braces.js b/plugins/match-braces/prism-match-braces.js
index 9233e1962c..717e7f4ba9 100644
--- a/plugins/match-braces/prism-match-braces.js
+++ b/plugins/match-braces/prism-match-braces.js
@@ -130,18 +130,20 @@
 
 			for (var i = 0; i < punctuation.length; i++) {
 				var element = punctuation[i];
-				var text = element.textContent;
-				if (text === open) {
-					allBraces.push({ index: i, open: true, element: element });
-					element.className += ' ' + name;
-					element.className += ' brace-open';
-					openStack.push(i);
-				} else if (text === close) {
-					allBraces.push({ index: i, open: false, element: element });
-					element.className += ' ' + name;
-					element.className += ' brace-close';
-					if (openStack.length) {
-						pairs.push([i, openStack.pop()]);
+				if (element.childElementCount == 0) {
+					var text = element.textContent;
+					if (text === open) {
+						allBraces.push({ index: i, open: true, element: element });
+						element.className += ' ' + name;
+						element.className += ' brace-open';
+						openStack.push(i);
+					} else if (text === close) {
+						allBraces.push({ index: i, open: false, element: element });
+						element.className += ' ' + name;
+						element.className += ' brace-close';
+						if (openStack.length) {
+							pairs.push([i, openStack.pop()]);
+						}
 					}
 				}
 			}
diff --git a/plugins/match-braces/prism-match-braces.min.js b/plugins/match-braces/prism-match-braces.min.js
index 4e3453999f..8e54311f7d 100644
--- a/plugins/match-braces/prism-match-braces.min.js
+++ b/plugins/match-braces/prism-match-braces.min.js
@@ -1 +1 @@
-!function(){if("undefined"!=typeof self&&self.Prism&&self.document){var c=/(?:^|\s)match-braces(?:\s|$)/,a=/(?:^|\s)brace-hover(?:\s|$)/,l=/(?:^|\s)brace-selected(?:\s|$)/,n=/(?:^|\s)no-brace-hover(?:\s|$)/,r=/(?:^|\s)no-brace-select(?:\s|$)/,u={"(":")","[":"]","{":"}"},f={"(":"brace-round","[":"brace-square","{":"brace-curly"},m=0;Prism.hooks.add("complete",function(e){var a=e.element,n=a.parentElement;if(n&&"PRE"==n.tagName){for(var r=[],t=a;t;t=t.parentElement)if(c.test(t.className)){r.push("(","[","{");break}if(0!=r.length){n.__listenerAdded||(n.addEventListener("mousedown",function(){var e=n.querySelector("code");Array.prototype.slice.call(e.querySelectorAll(".brace-selected")).forEach(function(e){e.className=e.className.replace(l," ")})}),Object.defineProperty(n,"__listenerAdded",{value:!0}));var o=Array.prototype.slice.call(a.querySelectorAll("span.token.punctuation")),i=[];r.forEach(function(e){for(var a=u[e],n=f[e],r=[],t=[],s=0;s
Date: Tue, 3 Sep 2019 16:14:27 +0200
Subject: [PATCH 3/3] Extracted regex

---
 plugins/match-braces/prism-match-braces.js     | 4 +++-
 plugins/match-braces/prism-match-braces.min.js | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/plugins/match-braces/prism-match-braces.js b/plugins/match-braces/prism-match-braces.js
index 717e7f4ba9..2488e34bce 100644
--- a/plugins/match-braces/prism-match-braces.js
+++ b/plugins/match-braces/prism-match-braces.js
@@ -28,6 +28,8 @@
 
 	var pairIdCounter = 0;
 
+	var BRACE_ID_PATTERN = /^(pair-\d+-)(open|close)$/;
+
 	/**
 	 * Returns the brace partner given one brace of a brace pair.
 	 *
@@ -35,7 +37,7 @@
 	 * @returns {HTMLElement}
 	 */
 	function getPartnerBrace(brace) {
-		var match = /^(pair-\d+-)(open|close)$/.exec(brace.id);
+		var match = BRACE_ID_PATTERN.exec(brace.id);
 		return document.querySelector('#' + match[1] + (match[2] == 'open' ? 'close' : 'open'));
 	}
 
diff --git a/plugins/match-braces/prism-match-braces.min.js b/plugins/match-braces/prism-match-braces.min.js
index 8e54311f7d..4ae2953dba 100644
--- a/plugins/match-braces/prism-match-braces.min.js
+++ b/plugins/match-braces/prism-match-braces.min.js
@@ -1 +1 @@
-!function(){if("undefined"!=typeof self&&self.Prism&&self.document){var c=/(?:^|\s)match-braces(?:\s|$)/,a=/(?:^|\s)brace-hover(?:\s|$)/,l=/(?:^|\s)brace-selected(?:\s|$)/,n=/(?:^|\s)no-brace-hover(?:\s|$)/,t=/(?:^|\s)no-brace-select(?:\s|$)/,u={"(":")","[":"]","{":"}"},f={"(":"brace-round","[":"brace-square","{":"brace-curly"},m=0;Prism.hooks.add("complete",function(e){var a=e.element,n=a.parentElement;if(n&&"PRE"==n.tagName){for(var t=[],r=a;r;r=r.parentElement)if(c.test(r.className)){t.push("(","[","{");break}if(0!=t.length){n.__listenerAdded||(n.addEventListener("mousedown",function(){var e=n.querySelector("code");Array.prototype.slice.call(e.querySelectorAll(".brace-selected")).forEach(function(e){e.className=e.className.replace(l," ")})}),Object.defineProperty(n,"__listenerAdded",{value:!0}));var o=Array.prototype.slice.call(a.querySelectorAll("span.token.punctuation")),i=[];t.forEach(function(e){for(var a=u[e],n=f[e],t=[],r=[],s=0;s