1 files changed, 77 insertions, 0 deletions
diff --git a/src/qtvstools.core/Observable.cs b/src/qtvstools.core/Observable.cs
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+++ b/src/qtvstools.core/Observable.cs
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt VS Tools.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace QtVsTools.Core
+{
+    public abstract class Observable : INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        public static T GetPropertyValue<T>(object obj, string name)
+        {
+            var retval = GetPropertyValue(obj, name);
+            if (retval == null)
+                return default(T);
+            return (T) retval;
+        }
+
+        public static object GetPropertyValue(object obj, string name)
+        {
+            foreach (var part in name.Split('.')) {
+                if (obj == null)
+                    return null;
+
+                var type = obj.GetType();
+                var propertyInfo = type.GetProperty(part);
+                if (propertyInfo == null)
+                    return null;
+                obj = propertyInfo.GetValue(obj, null);
+            }
+            return obj;
+        }
+
+        protected void SetValue<T>(ref T storage, T value, [CallerMemberName] string name = null)
+        {
+            if (Equals(storage, value))
+                return;
+
+            storage = value;
+            OnPropertyChanged(name);
+        }
+
+        protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            var eventHandler = PropertyChanged;
+            if (eventHandler != null)
+                eventHandler.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+    }
+}