ImageListViewItemAdaptor.cs

// ImageListView - A listview control for image files
// Copyright (C) 2009 Ozgur Ozcitak
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Ozgur Ozcitak (ozcitak@yahoo.com)

using System;
using System.Drawing;

namespace Manina.Windows.Forms
{
    public partial class ImageListView
    {
        /// <summary>
        /// Represents the abstract case class for adaptors.
        /// </summary>
        public abstract class ImageListViewItemAdaptor : IDisposable
        {
            #region Abstract Methods
            /// <summary>
            /// Returns the thumbnail image for the given item.
            /// </summary>
            /// <param name="key">Item key.</param>
            /// <param name="size">Requested image size.</param>
            /// <param name="useEmbeddedThumbnails">Embedded thumbnail usage.</param>
            /// <param name="useExifOrientation">true to automatically rotate images based on Exif orientation; otherwise false.</param>
            /// <returns>The thumbnail image from the given item or null if an error occurs.</returns>
            public abstract Image GetThumbnail(object key, Size size, UseEmbeddedThumbnails useEmbeddedThumbnails, bool useExifOrientation);
            /// <summary>
            /// Returns a unique identifier for this thumbnail to be used in persistent
            /// caching.
            /// </summary>
            /// <param name="key">Item key.</param>
            /// <param name="size">Requested image size.</param>
            /// <param name="useEmbeddedThumbnails">Embedded thumbnail usage.</param>
            /// <param name="useExifOrientation">true to automatically rotate images based on Exif orientation; otherwise false.</param>
            /// <returns>A unique identifier string for the thumnail.</returns>
            public abstract string GetUniqueIdentifier(object key, Size size, UseEmbeddedThumbnails useEmbeddedThumbnails, bool useExifOrientation);
            /// <summary>
            /// Returns the path to the source image for use in drag operations.
            /// </summary>
            /// <param name="key">Item key.</param>
            /// <returns>The path to the source image.</returns>
            public abstract string GetSourceImage(object key);
            /// <summary>
            /// Returns the details for the given item.
            /// </summary>
            /// <param name="key">Item key.</param>
            /// <returns>An array of tuples containing item details or null if an error occurs.</returns>
            public abstract Utility.Tuple<ColumnType, string, object>[] GetDetails(object key);
            /// <summary>
            /// Performs application-defined tasks associated with freeing,
            /// releasing, or resetting unmanaged resources.
            /// </summary>
            public abstract void Dispose();
            #endregion
        }
    }
}