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// ListViewColumnCollection.cs
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// Lluis Sanchez <lluis@xamarin.com>
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// Copyright (c) 2011 Xamarin Inc
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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using System.Collections.ObjectModel;
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using System.Collections.Generic;
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public class ListViewColumnCollection: Collection<ListViewColumn>
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IColumnContainer parent;
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IColumnContainerBackend container;
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internal ListViewColumnCollection (IColumnContainer parent)
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internal void Attach (IColumnContainerBackend container)
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this.container = container;
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foreach (var col in this) {
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col.Parent = container;
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col.Handle = container.AddColumn (col);
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public void Add (string title, params DataField[] fields)
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ListViewColumn col = new ListViewColumn (title);
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foreach (var f in fields)
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col.Views.Add (CellView.GetDefaultCellView (f));
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protected override void InsertItem (int index, ListViewColumn item)
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if (item.Parent != null)
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throw new InvalidOperationException ("Column already belongs to a list or tree");
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if (container != null) {
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item.Handle = container.AddColumn (item);
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item.Parent = container;
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base.InsertItem (index, item);
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parent.NotifyColumnsChanged ();
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protected override void RemoveItem (int index)
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if (container != null) {
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var col = this[index];
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container.RemoveColumn (col, col.Handle);
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base.RemoveItem (index);
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parent.NotifyColumnsChanged ();
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protected override void SetItem (int index, ListViewColumn item)
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if (item.Parent != null)
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throw new InvalidOperationException ("Column already belongs to a list or tree");
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if (container != null) {
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var col = this[index];
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container.RemoveColumn (col, col.Handle);
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item.Handle = container.AddColumn (item);
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item.Parent = container;
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base.SetItem (index, item);
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parent.NotifyColumnsChanged ();
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protected override void ClearItems ()
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if (container != null) {
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foreach (var col in this) {
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container.RemoveColumn (col, col.Handle);
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parent.NotifyColumnsChanged ();