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Viewing changes to external/xwt/Xwt/Xwt/ItemCollection.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/xwt/Xwt/Xwt/ItemCollection.cs
 
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// 
 
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// ItemCollection.cs
 
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//  
 
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// Author:
 
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//       Lluis Sanchez <lluis@xamarin.com>
 
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// 
 
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// Copyright (c) 2011 Xamarin Inc
 
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// 
 
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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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// 
 
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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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// 
 
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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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// THE SOFTWARE.
 
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using System;
 
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using System.Collections.Generic;
 
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using System.Collections.ObjectModel;
 
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namespace Xwt
 
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{
 
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        // This implementation is a workaround to a Windows GTK# bug,
 
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        // which crashes when using custom model implementations.
 
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        // I'll switch to the other version when the bug is fixed
 
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        public sealed class ItemCollection: Collection<Object>
 
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        {
 
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                ListStore store;
 
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                DataField<string> labelField = new DataField<string> ();
 
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                DataField<object> dataField = new DataField<object> ();
 
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                class ItemWithLabel {
 
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                        public object Item;
 
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                        public string Label;
 
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                }
 
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                internal ItemCollection ()
 
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                {
 
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                        store = new ListStore (labelField, dataField);
 
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                }
 
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                public void Add (object item, string label)
 
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                {
 
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                        Add (new ItemWithLabel () { Item = item, Label = label });
 
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                }
 
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                public void Insert (int index, object item, string label)
 
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                {
 
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                        Insert (index, new ItemWithLabel () { Item = item, Label = label });
 
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                }
 
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                protected override void InsertItem (int index, object item)
 
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                {
 
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                        if (item is ItemWithLabel) {
 
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                                var itl = (ItemWithLabel) item;
 
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                                base.InsertItem (index, itl.Item);
 
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                                store.InsertRowBefore (index);
 
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                                store.SetValue (index, labelField, itl.Label);
 
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                                store.SetValue (index, dataField, itl.Item);
 
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                        } else {
 
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                                base.InsertItem (index, item);
 
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                                store.InsertRowBefore (index);
 
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                                store.SetValue (index, labelField, item.ToString ());
 
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                                store.SetValue (index, dataField, item);
 
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                        }
 
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                }
 
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                protected override void RemoveItem (int index)
 
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                {
 
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                        base.RemoveItem (index);
 
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                        store.RemoveRow (index);
 
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                }
 
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                protected override void SetItem (int index, object item)
 
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                {
 
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                        base.SetItem (index, item);
 
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                        store.SetValue (index, dataField, item);
 
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                }
 
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                protected override void ClearItems ()
 
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                {
 
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                        base.ClearItems ();
 
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                        while (store.RowCount > 0)
 
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                                store.RemoveRow (0);
 
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                }
 
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                internal IListDataSource DataSource {
 
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                        get { return store; }
 
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                }
 
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        }
 
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/*      public sealed class ItemCollection: Collection<Object>, IListDataSource
 
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        {
 
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                List<string> labels;
 
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                internal ItemCollection ()
 
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                {
 
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                }
 
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                public event EventHandler<ListRowEventArgs> RowInserted;
 
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                public event EventHandler<ListRowEventArgs> RowDeleted;
 
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                public event EventHandler<ListRowEventArgs> RowChanged;
 
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                public event EventHandler<ListRowOrderEventArgs> RowsReordered;
 
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                class ItemWithLabel {
 
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                        public object Item;
 
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                        public string Label;
 
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                }
 
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                public void Add (object item, string label)
 
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                {
 
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                        Add (new ItemWithLabel () { Item = item, Label = label });
 
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                }
 
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                public void Insert (int index, object item, string label)
 
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                {
 
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                        Insert (index, new ItemWithLabel () { Item = item, Label = label });
 
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                }
 
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                void InitLabelList (int index)
 
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                {
 
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                        if (labels == null)
 
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                                labels = new List<string> ();
 
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                        for (int n=labels.Count - 1; n < index; n++)
 
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                                labels.Add (null);
 
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                }
 
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                protected override void InsertItem (int index, object item)
 
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                {
 
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                        if (item is ItemWithLabel) {
 
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                                var itl = (ItemWithLabel) item;
 
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                                InitLabelList (index - 1);
 
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                                labels.Insert (index, itl.Label);
 
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                                item = itl.Item;
 
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                        }
 
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                        else if (labels != null && index < labels.Count)
 
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                                labels.Insert (index, null);
 
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                        base.InsertItem (index, item);
 
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                        if (RowInserted != null)
 
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                                RowInserted (this, new ListRowEventArgs (index));
 
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                }
 
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                protected override void RemoveItem (int index)
 
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                {
 
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                        if (labels != null && index < labels.Count)
 
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                                labels.RemoveAt (index);
 
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                        base.RemoveItem (index);
 
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                        if (RowDeleted != null)
 
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                                RowDeleted (this, new ListRowEventArgs (index));
 
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                }
 
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                protected override void SetItem (int index, object item)
 
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                {
 
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                        base.SetItem (index, item);
 
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                        if (RowChanged != null)
 
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                                RowChanged (this, new ListRowEventArgs (index));
 
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                }
 
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                protected override void ClearItems ()
 
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                {
 
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                        if (labels != null)
 
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                                labels.Clear ();
 
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                        int count = Count;
 
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                        base.ClearItems ();
 
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                        for (int n=count - 1; n >= 0; n--) {
 
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                                if (RowDeleted != null)
 
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                                        RowDeleted (this, new ListRowEventArgs (n));
 
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                        }
 
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                }
 
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                internal IListDataSource DataSource {
 
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                        get { return this; }
 
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                }
 
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                #region IListViewSource implementation
 
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                object IListDataSource.GetValue (int row, int column)
 
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                {
 
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                        if (column != 0)
 
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                                throw new InvalidOperationException ("Not data for column " + column);
 
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                        if (labels != null && row < labels.Count)
 
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                                return labels[row];
 
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                        else
 
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                                return this [row];
 
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                }
 
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                void IListDataSource.SetValue (int row, int column, object value)
 
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                {
 
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                        if (column != 0)
 
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                                throw new InvalidOperationException ("Not data for column " + column);
 
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                        if (labels != null && row < labels.Count)
 
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                                labels [row] = (string)value;
 
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                        else
 
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                                this [row] = value;
 
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                }
 
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                int IListDataSource.RowCount {
 
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                        get {
 
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                                return Count;
 
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                        }
 
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                }
 
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                Type[] IListDataSource.ColumnTypes {
 
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                        get {
 
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                                return new Type[] { typeof(string) };
 
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                        }
 
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                }
 
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                #endregion
 
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        }*/
 
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}
 
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