From 46ac1fe4400a52359ae8146408544a11df4873d6 Mon Sep 17 00:00:00 2001
From: Nikita Vasilyev <me@elv1s.ru>
Date: Fri, 20 Jul 2012 17:19:18 +0400
Subject: [PATCH] Auto-pair square brackets in JavaScript, PHP, and JSON

Closes #832
---
 lib/ace/mode/behaviour/cstyle.js | 38 ++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/lib/ace/mode/behaviour/cstyle.js b/lib/ace/mode/behaviour/cstyle.js
index ff1d2a70..ba9d7c3f 100644
--- a/lib/ace/mode/behaviour/cstyle.js
+++ b/lib/ace/mode/behaviour/cstyle.js
@@ -147,6 +147,44 @@ var CstyleBehaviour = function () {
         }
     });
 
+    this.add("brackets", "insertion", function (state, action, editor, session, text) {
+        if (text == '[') {
+            var selection = editor.getSelectionRange();
+            var selected = session.doc.getTextRange(selection);
+            if (selected === "") {
+                return {
+                    text: '[]',
+                    selection: [1, 1]
+                };
+            }
+        } else if (text == ']') {
+            var cursor = editor.getCursorPosition();
+            var line = session.doc.getLine(cursor.row);
+            var rightChar = line.substring(cursor.column, cursor.column + 1);
+            if (rightChar == ']') {
+                var matching = session.$findOpeningBracket(']', {column: cursor.column + 1, row: cursor.row});
+                if (matching !== null) {
+                    return {
+                        text: '',
+                        selection: [1, 1]
+                    };
+                }
+            }
+        }
+    });
+
+    this.add("brackets", "deletion", function (state, action, editor, session, range) {
+        var selected = session.doc.getTextRange(range);
+        if (!range.isMultiLine() && selected == '[') {
+            var line = session.doc.getLine(range.start.row);
+            var rightChar = line.substring(range.start.column + 1, range.start.column + 2);
+            if (rightChar == ']') {
+                range.end.column++;
+                return range;
+            }
+        }
+    });
+
     this.add("string_dquotes", "insertion", function (state, action, editor, session, text) {
         if (text == '"' || text == "'") {
             var quote = text;