ImageCollectionEditor.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / ImageCollectionEditor.cs / 1 / ImageCollectionEditor.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

[assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Windows.Forms.Design.ImageCollectionEditor..ctor(System.Type)")] 
 
namespace System.Windows.Forms.Design {
 
    using System.Runtime.InteropServices;

    using System.Diagnostics;
    using System; 
    using System.IO;
    using System.Collections; 
    using System.ComponentModel; 
    using System.ComponentModel.Design;
    using System.Windows.Forms; 
    using System.Drawing;
    using System.Drawing.Design;
    using System.Design;
    using System.Windows.Forms.ComponentModel; 

    ///  
    ///  
    ///    
    ///       Provides an editor for an image collection. 
    /// 
    internal class ImageCollectionEditor : CollectionEditor {

        ///  
        /// 
        /// Initializes a new instance of the  class. 
        ///  
        public ImageCollectionEditor(Type type) : base(type){
        } 

        /// 
        /// 
        ///      Retrieves the display text for the given list item. 
        /// 
        protected override string GetDisplayText(object value) { 
            string text; 

            if (value == null) { 
                return string.Empty;
            }

            PropertyDescriptor prop = TypeDescriptor.GetProperties(value)["Name"]; 
            if (prop != null) {
                text = (string) prop.GetValue( value ); 
                if (text != null && text.Length > 0) { 
                    return text;
                } 
            }

            // If we want to show any type information - pretend we're an image.
            if (value is ImageListImage) { 
                value = ((ImageListImage)value).Image;
            } 
 
            text = TypeDescriptor.GetConverter(value).ConvertToString(value);
 
            if (text == null || text.Length == 0) {
                text = value.GetType().Name;
            }
 
            return text;
        } 
        ///  
        /// 
        ///    Creates an instance of the specified type in the collection. 
        /// 
        protected override object CreateInstance(Type type) {
            UITypeEditor editor = (UITypeEditor) TypeDescriptor.GetEditor(typeof(ImageListImage), typeof(UITypeEditor));
            return editor.EditValue(this.Context, null); 
        }
 
        ///  
        /// 
        ///    Creates a 
        ///       new form to show the current collection.
        /// 
        protected override CollectionForm CreateCollectionForm() {
            CollectionForm form = base.CreateCollectionForm(); 

            // We want to switch the title to ImageCollection Editor instead of ImageListImage Editor. 
            // The collection editor is actually using ImageListImages, while the collection we're actually editing is the Image collection. 
            form.Text = SR.GetString(SR.ImageCollectionEditorFormText);
            return form; 
        }

        /// 
        ///  
        ///    
        ///       This Function gets the images from the givem object. The input is an ArrayList as an object. 
        ///       The output is a arraylist which contains the individual images that need to be created. 
        ///    
        ///  
        protected override IList GetObjectsFromInstance(object instance) {
            ArrayList value = instance as ArrayList;
            if (value != null) {
                return value; 
            }
            else return null; 
        } 
    }
 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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