From e5b307d0569b8657765b651264c98ce958afb95d Mon Sep 17 00:00:00 2001
From: nightwing <amirjanyan@gmail.com>
Date: Thu, 6 Dec 2012 13:53:03 +0400
Subject: [PATCH] do not change selection of blurred textarea

---
 lib/ace/keyboard/textinput.js | 117 +++++++++++++++++-----------------
 1 file changed, 60 insertions(+), 57 deletions(-)

diff --git a/lib/ace/keyboard/textinput.js b/lib/ace/keyboard/textinput.js
index be5202d3..db2a6468 100644
--- a/lib/ace/keyboard/textinput.js
+++ b/lib/ace/keyboard/textinput.js
@@ -64,17 +64,69 @@ var TextInput = function(parentNode, host) {
     var inCompostion = false;
     var tempStyle = '';
     var isSelectionEmpty = true;
+
+    // FOCUS
+    var isFocused = document.activeElement === text;
+    event.addListener(text, "blur", function() {
+        host.onBlur();
+        isFocused = false;
+    });
+    event.addListener(text, "focus", function() {
+        isFocused = true;
+        host.onFocus();
+        resetSelection();
+    });
+    this.focus = function() {
+        text.focus();
+    };
+    this.blur = function() {
+        text.blur();
+    };   
+    this.isFocused = function() {
+        return isFocused;
+    };
+
+    // modifying selection of blured textarea can focus it (chrome mac/linux)
     var syncSelection = lang.delayedCall(function() {
-        resetSelection(isSelectionEmpty);
+        isFocused && resetSelection(isSelectionEmpty);
     });
     var syncValue = lang.delayedCall(function() {
          if (!inCompostion) {
-             text.value = PLACEHOLDER;
-             resetSelection();
+            text.value = PLACEHOLDER;
+            isFocused && resetSelection();
          }
     });
+
+    function resetSelection(isEmpty) {
+        if (inCompostion)
+            return;
+        var selectionStart = isEmpty ? 2 : 1;
+        var selectionEnd = 2;
+        // on firefox this throws if textarea is hidden
+        try {
+            text.setSelectionRange(selectionStart, selectionEnd);
+        } catch(e){}
+    };
+
+    function resetValue() {
+        if (inCompostion)
+            return;
+        text.value = PLACEHOLDER;
+        //http://code.google.com/p/chromium/issues/detail?id=76516
+        if (useragent.isWebKit)
+            syncValue.schedule();
+    };
+
+    useragent.isWebKit || host.addEventListener('changeSelection', function() {
+        if (host.selection.isEmpty() != isSelectionEmpty) {
+            isSelectionEmpty = !isSelectionEmpty;
+            syncSelection.schedule();
+        }
+    });
+
+
     resetValue();
-    if (isFocused())
+    if (isFocused)
         host.onFocus();
 
 
@@ -129,26 +181,6 @@ var TextInput = function(parentNode, host) {
         });
     }
 
-    function resetValue() {
-        if (inCompostion)
-            return;
-        text.value = PLACEHOLDER;
-        //http://code.google.com/p/chromium/issues/detail?id=76516
-        if (useragent.isWebKit)
-            syncValue.schedule();
-    };
-
-    function resetSelection(isEmpty) {
-        if (inCompostion)
-            return;
-        var selectionStart = isEmpty ? 2 : 1;
-        var selectionEnd = 2;
-        // on firefox this throws if textarea is hidden
-        try {
-            text.setSelectionRange(selectionStart, selectionEnd);
-        } catch(e){}
-    };
-
     var onSelect = function(e) {
         if (cut) {
             cut = false;
@@ -321,35 +353,14 @@ var TextInput = function(parentNode, host) {
     }
 
 
-
+    // COMPOSITION
     event.addListener(text, "compositionstart", onCompositionStart);
-    if (useragent.isGecko) {
+    if (useragent.isGecko)
         event.addListener(text, "text", onCompositionUpdate);
-    }
-    if (useragent.isWebKit) {
+    if (useragent.isWebKit)
         event.addListener(text, "keyup", onCompositionUpdate);
-    }
     event.addListener(text, "compositionend", onCompositionEnd);
 
-    event.addListener(text, "blur", function() {
-        host.onBlur();
-    });
-    event.addListener(text, "focus", function() {
-        host.onFocus();
-        resetSelection();
-    });
-    this.focus = function() {
-        text.focus();
-    };
-    this.blur = function() {
-        text.blur();
-    };
-
-    function isFocused() {
-        return document.activeElement === text;
-    }
-    this.isFocused = isFocused;
-
     // CONTEXTMENU
     this.getElement = function() {
         return text;
@@ -382,7 +393,7 @@ var TextInput = function(parentNode, host) {
             event.capture(host.container, move, onContextMenuClose);
     };
 
-    function onContextMenuClose() {
+    this.onContextMenuClose = function() {
         setTimeout(function () {
             if (tempStyle) {
                 text.style.cssText = tempStyle;
@@ -394,7 +405,6 @@ var TextInput = function(parentNode, host) {
             }
         }, 0);
     };
-    this.onContextMenuClose = onContextMenuClose;
 
     // firefox fires contextmenu event after opening it
     if (!useragent.isGecko) {
@@ -403,13 +413,6 @@ var TextInput = function(parentNode, host) {
             onContextMenuClose();
         });
     }
-
-    host.addEventListener('changeSelection', function(){
-        if (host.selection.isEmpty() != isSelectionEmpty) {
-            isSelectionEmpty = !isSelectionEmpty;
-            syncSelection.schedule();
-        }
-    });
 };
 
 exports.TextInput = TextInput;