From ef489ae8e3b5764e65c8979c03866665cdb569bf Mon Sep 17 00:00:00 2001
From: nightwing <amirjanyan@gmail.com>
Date: Thu, 7 Jun 2012 18:23:37 +0400
Subject: [PATCH] select block in braces by double clicking on the brace

---
 lib/ace/edit_session/bracket_match.js | 41 +++++++++++++++++++++++++--
 lib/ace/mouse/default_handlers.js     | 39 +++++++++++++++++++------
 2 files changed, 69 insertions(+), 11 deletions(-)

diff --git a/lib/ace/edit_session/bracket_match.js b/lib/ace/edit_session/bracket_match.js
index 86400214..0e646c9f 100644
--- a/lib/ace/edit_session/bracket_match.js
+++ b/lib/ace/edit_session/bracket_match.js
@@ -40,6 +40,7 @@ define(function(require, exports, module) {
 "use strict";
 
 var TokenIterator = require("../token_iterator").TokenIterator;
+var Range = require("../range").Range;
 
 /**
  * class BracketMatch
@@ -76,15 +77,49 @@ function BracketMatch() {
         if (charBeforeCursor == "") return null;
 
         var match = charBeforeCursor.match(/([\(\[\{])|([\)\]\}])/);
-        if (!match) {
+        if (!match)
             return null;
+
+        if (match[1])
+            return this.$findClosingBracket(match[1], position);
+        else
+            return this.$findOpeningBracket(match[2], position);
+    };
+    
+    this.getBracketRange = function(pos) {
+        var line = this.getLine(pos.row);
+        var before = true, range;
+
+        var chr = line.charAt(pos.column-1);
+        var match = chr && chr.match(/([\(\[\{])|([\)\]\}])/);
+        if (!match) {
+            chr = line.charAt(pos.column);
+            pos.column++
+            match = chr && chr.match(/([\(\[\{])|([\)\]\}])/);
+            before = false;
         }
+        if (!match)
+            return null;
 
         if (match[1]) {
-            return this.$findClosingBracket(match[1], position);
+            var bracketPos = this.$findClosingBracket(match[1], pos);
+            if (!bracketPos)
+                return null;
+            range = Range.fromPoints(pos, bracketPos);
+            if (!before)
+                range.end.column++;
         } else {
-            return this.$findOpeningBracket(match[2], position);
+            var bracketPos = this.$findOpeningBracket(match[2], pos);
+            if (!bracketPos)
+                return null;
+            range = Range.fromPoints(bracketPos, pos);
+            if (!before) {
+                range.start.column++;
+                range.end.column--;
+            }
         }
+        
+        return range;
     };
 
     this.$brackets = {
diff --git a/lib/ace/mouse/default_handlers.js b/lib/ace/mouse/default_handlers.js
index 497de75e..9af13079 100644
--- a/lib/ace/mouse/default_handlers.js
+++ b/lib/ace/mouse/default_handlers.js
@@ -146,8 +146,9 @@ function DefaultHandlers(mouseHandler) {
             } else if (cmp == 1) {
                 anchor = this.$clickSelection.start;
             } else {
-                cursor = this.$clickSelection.end;
-                anchor = this.$clickSelection.start;
+                var orientedRange = calcRangeOrientation(this.$clickSelection, cursor);
+                cursor = orientedRange.cursor;
+                anchor = orientedRange.anchor;
             }
             editor.selection.setSelectionAnchor(anchor.row, anchor.column);
         }
@@ -175,8 +176,9 @@ function DefaultHandlers(mouseHandler) {
                 cursor = range.end;
                 anchor = range.start;
             } else {
-                cursor = this.$clickSelection.end;
-                anchor = this.$clickSelection.start;
+                var orientedRange = calcRangeOrientation(this.$clickSelection, cursor);
+                cursor = orientedRange.cursor;
+                anchor = orientedRange.anchor;
             }
             editor.selection.setSelectionAnchor(anchor.row, anchor.column);
         }
@@ -277,12 +279,21 @@ function DefaultHandlers(mouseHandler) {
     this.onDoubleClick = function(ev) {
         var pos = ev.getDocumentPosition();
         var editor = this.editor;
+        var session = editor.session
 
+        var range = session.getBracketRange(pos);
+        if (range) {
+            if (range.isEmpty()) {
+                range.start.column--;
+                range.end.column++;
+            }
+            this.$clickSelection = range;
+            this.setState("select");
+            return;
+        }
+    
+        this.$clickSelection = editor.selection.getWordRange(pos.row, pos.column);
         this.setState("selectByWords");
-
-        editor.moveCursorToPosition(pos);
-        editor.selection.selectWord();
-        this.$clickSelection = editor.getSelectionRange();
     };
 
     this.onTripleClick = function(ev) {
@@ -334,4 +345,16 @@ function calcDistance(ax, ay, bx, by) {
     return Math.sqrt(Math.pow(bx - ax, 2) + Math.pow(by - ay, 2));
 }
 
+function calcRangeOrientation(range, cursor) {
+    if (range.start.row == range.end.row)
+        var cmp = 2 * cursor.column - range.start.column - range.end.column;
+    else
+        var cmp = 2 * cursor.row - range.start.row - range.end.row;
+    
+    if (cmp < 0)
+        return {cursor: range.start, anchor: range.end};
+    else
+        return {cursor: range.end, anchor: range.start};
+}
+
 });