2005-05-11 Eric Butler <eric@extremeboredom.net>

* gtk/Gtk.metadata : add IEnumerable iface to ListStore.
	* gtk/ListStore.cs : add GetEnumerator.
	* gtk/Makefile.am : add file.
	* gtk/TreeEnumerator.cs : root node enumerator for a TreeModel.

svn path=/trunk/gtk-sharp/; revision=44409

ChangeLog

@@ -1,3 +1,10 @@
+2005-05-11  Eric Butler  <eric@extremeboredom.net>
+
+	* gtk/Gtk.metadata : add IEnumerable iface to ListStore.
+	* gtk/ListStore.cs : add GetEnumerator.
+	* gtk/Makefile.am : add file.
+	* gtk/TreeEnumerator.cs : root node enumerator for a TreeModel.
+
 2005-05-11  Mike Kestner  <mkestner@novell.com>
 
 	* gtk/Widget.custom : manual ListMnemonicLabels implementation to

doc/en/Gtk/ListStore.xml

@@ -1497,5 +1497,23 @@ The above example creates a new three columns list store. The types of the colum
         <remarks>To be added</remarks>
       </Docs>
     </Member>
+    <Member MemberName="GetEnumerator">
+      <MemberSignature Language="C#" Value="public virtual System.Collections.IEnumerator GetEnumerator ();" />
+      <MemberType>Method</MemberType>
+      <ReturnValue>
+        <ReturnType>System.Collections.IEnumerator</ReturnType>
+      </ReturnValue>
+      <Parameters />
+      <Docs>
+        <summary>
+          <para>Returns a <see cref="T:System.Collections.IEnumerator" /> for the current instance.</para>
+        </summary>
+        <returns>a <see cref="T:System.Collections.IEnumerator" /></returns>
+        <remarks>
+          <para> If the elements of the current instance are modified while an enumeration is in progress, a call to <see cref="M:System.Collections.IEnumerator.MoveNext" /> or <see cref="P:System.Collections.IEnumerator.Current" /> throws <see cref="T:System.InvalidOperationException" />.</para>
+	</remarks>
+      </Docs>
+    </Member>
   </Members>
-</Type>
+</Type>
+

gtk/Gtk.metadata

@@ -249,6 +249,7 @@
   <attr path="/api/namespace/object[@cname='GtkLabel']/constructor[@cname='gtk_label_new_with_mnemonic']" name="preferred">1</attr>
   <attr path="/api/namespace/object[@cname='GtkLabel']/constructor[@cname='gtk_label_new_with_mnemonic']/*/*[@name='str']" name="property_name">label</attr>
   <attr path="/api/namespace/object[@cname='GtkLayout']/signal[@name='SetScrollAdjustments']" name="name">ScrollAdjustmentsSet</attr>
+  <add-node path="/api/namespace/object[@name='ListStore']"><implements><interface name="IEnumerable" /></implements></add-node>
   <attr path="/api/namespace/object[@cname='GtkListStore']/constructor[@cname='gtk_list_store_new']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkListStore']/constructor[@cname='gtk_list_store_newv']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkListStore']/method[@name='Append']/*/*[@name='iter']" name="pass_as">out</attr>

gtk/ListStore.custom

@@ -164,3 +164,9 @@
 		{
 			DefaultSortFunc = sort_func;
 		}
+
+		public IEnumerator GetEnumerator()
+		{
+			return new TreeEnumerator(this);
+		}
+

gtk/Makefile.am

@@ -24,6 +24,7 @@ sources = 				\
 	ThreadNotify.cs			\
 	ToggleActionEntry.cs		\
 	Timeout.cs			\
+	TreeEnumerator.cs		\
 	TreeNodeAttribute.cs		\
 	TreeNode.cs			\
 	TreeNodeValueAttribute.cs

gtk/TreeEnumerator.cs

@@ -0,0 +1,85 @@
+// TreeEnumerator.cs - .NET-style Enumerator for TreeModel classes
+//
+// Author: Eric Butler <eric@extremeboredom.net>
+//
+// Copyright (c) 2005 Eric Butler
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of version 2 of the Lesser GNU General
+// Public License as published by the Free Software Foundation.
+//
+// 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this program; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA 02111-1307, USA.
+
+
+using System;
+using System.Collections;
+
+namespace Gtk
+{
+	internal class TreeEnumerator : IEnumerator
+	{
+		private Gtk.TreeIter iter;
+		private Gtk.TreeModel model;
+		private bool reset = true;
+		private bool changed = false;
+		
+		public TreeEnumerator (TreeModel model)
+		{
+			this.model = model;
+			
+			model.RowChanged += model_changed;
+			model.RowDeleted += model_changed;
+			model.RowInserted += model_changed;
+			model.RowsReordered += model_changed;
+		}
+		
+		public object Current
+		{
+			get {
+				if (reset == false) {
+					object[] row = new object[model.NColumns];
+					for (int x = 0; x < model.NColumns; x++) {
+						row[x] = model.GetValue(iter, x);
+					}
+					return row;
+				} else {
+					throw new InvalidOperationException("Enumerator not started.");
+				}
+			}
+		}
+		
+		public bool MoveNext()
+		{
+			if (changed == false) {
+				if (reset == true) {
+					reset = false;
+					return model.GetIterFirst(out iter);
+				} else {
+					return model.IterNext(ref iter);
+				}
+			} else {
+				throw new InvalidOperationException("List has changed.");
+			}
+		}
+		
+		public void Reset()
+		{
+			reset = true;
+			changed = false;
+		}
+		
+		private void model_changed(object o, EventArgs args)
+		{
+			changed = true;
+		}
+	}
+}
+