Make shift+enter to newline on all chat windows + handling fix

Signed-off-by: Miezhiko <Miezhiko@gmail.com>

indra/llui/lltexteditor.cpp

@@ -1784,6 +1784,18 @@ BOOL LLTextEditor::handleSpecialKey(const KEY key, const MASK mask)
 				autoIndent();
 			}
 		}
+		else if (mask == MASK_SHIFT)
+		{
+			if( mCursorPos > 0 )
+			{
+				const LLWString& text = getWText();
+				if( '\n' != text[ mCursorPos - 1 ] )
+				{
+					addLineBreakChar();
+					handled = TRUE;
+				}
+			}
+		}
 		else
 		{
 			handled = FALSE;

indra/llui/lltexteditor.h

@@ -213,7 +213,6 @@ class LLTextEditor :
 	bool			getShowContextMenu() const { return mShowContextMenu; }
 
 	void			setPassDelete(BOOL b) { mPassDelete = b; }
-	void			handleNewLine() { addLineBreakChar(FALSE); }
 
 protected:
 	void			showContextMenu(S32 x, S32 y);

indra/newview/llfloaterimnearbychat.cpp

@@ -426,20 +426,6 @@ BOOL LLFloaterIMNearbyChat::handleKeyHere( KEY key, MASK mask )
 		sendChat(CHAT_TYPE_SHOUT);
 		handled = TRUE;
 	}
-	else if (KEY_RETURN == key && mask == MASK_SHIFT)
-	{
-		// newline
-		if (mInputEditor)
-		{
-			// but don't allow multiple new lines
-			LLWString raw_text = mInputEditor->getWText();
-			if (raw_text[raw_text.length() - 1] != '\n')
-			{
-				mInputEditor->handleNewLine();
-			}
-		}
-		handled = TRUE;
-	}
 
 	if((mask == MASK_ALT) && isTornOff())
 	{