moved all sources to trunk directory

git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@693 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4

Greenshot/Drawing/Fields/AbstractFieldHolderWithChildren.cs

@@ -0,0 +1,126 @@
+/*
+ * Greenshot - a free and open source screenshot tool
+ * Copyright (C) 2007-2010  Thomas Braun, Jens Klingen, Robin Krom
+ * 
+ * For more information see: http://getgreenshot.org/
+ * The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 1 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Drawing;
+using System.Reflection;
+using System.Runtime.Serialization;
+
+using Greenshot.Helpers;
+
+namespace Greenshot.Drawing.Fields {
+	/// <summary>
+	/// Basic IFieldHolderWithChildren implementation. Similar to IFieldHolder,
+	/// but has a List<IFieldHolder> of children.
+	/// Field values are passed to and from children as well.
+	/// </summary>
+	[Serializable()] 
+	public abstract class AbstractFieldHolderWithChildren : AbstractFieldHolder {
+		
+		FieldChangedEventHandler fieldChangedEventHandler;
+		
+		[NonSerialized]
+		private EventHandler childrenChanged;
+		public event EventHandler ChildrenChanged {
+			add { childrenChanged += value; }
+			remove { childrenChanged -= value; }
+		}
+		
+		public List<IFieldHolder> Children = new List<IFieldHolder>();
+	
+		public AbstractFieldHolderWithChildren() {
+			fieldChangedEventHandler = new FieldChangedEventHandler(OnFieldChanged);
+		}
+		
+		[OnDeserializedAttribute()]
+		private void OnDeserialized(StreamingContext context) {
+			// listen to changing properties
+			foreach(IFieldHolder fieldHolder in Children) {
+				fieldHolder.FieldChanged += fieldChangedEventHandler;
+			}
+			if(childrenChanged != null) childrenChanged(this, EventArgs.Empty);
+		}
+		
+		public void AddChild(IFieldHolder fieldHolder) {
+			Children.Add(fieldHolder);
+			fieldHolder.FieldChanged += fieldChangedEventHandler;
+			if(childrenChanged != null) childrenChanged(this, EventArgs.Empty);
+		}
+		
+		public void RemoveChild(IFieldHolder fieldHolder) {
+			Children.Remove(fieldHolder);
+			fieldHolder.FieldChanged -= fieldChangedEventHandler;
+			if(childrenChanged != null) childrenChanged(this, EventArgs.Empty);
+		}
+		
+		public new List<Field> GetFields() {
+			List<Field> ret = new List<Field>();
+			ret.AddRange(base.GetFields());
+			foreach(IFieldHolder fh in Children) {
+				ret.AddRange(fh.GetFields());
+			}
+			return ret;
+		}
+		
+		public new Field GetField(FieldType fieldType) {
+			Field ret = null;
+			if(base.HasField(fieldType)) {
+				ret = base.GetField(fieldType);
+			} else {
+				foreach(IFieldHolder fh in Children) {
+					if(fh.HasField(fieldType)) {
+						ret = fh.GetField(fieldType);
+						break;
+					}
+				}
+			}
+			if(ret == null) {
+				throw new ArgumentException("Field '"+fieldType+"' does not exist in " + GetType());
+			}
+			return ret;
+		}
+		
+		public new bool HasField(FieldType fieldType) {
+			bool ret = base.HasField(fieldType);
+			if(!ret) {
+				foreach(IFieldHolder fh in Children) {
+					if(fh.HasField(fieldType)) {
+						ret = true;
+						break;
+					}
+				}
+			}
+			return ret;
+		}
+		
+		public new bool HasFieldValue(FieldType fieldType) {
+			Field f = GetField(fieldType);
+			return f != null && f.HasValue;
+		}
+		
+		public new void SetFieldValue(FieldType fieldType, object value) {
+			Field f = GetField(fieldType);
+			if(f != null) f.Value = value;
+		}
+		
+	}
+}