Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / HtmlElementCollection.cs / 1 / HtmlElementCollection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System; using System.ComponentModel; using System.Diagnostics; using System.IO; using System.Drawing; using System.Drawing.Printing; using System.Windows.Forms; using System.Security.Permissions; using System.Security; using System.Runtime.InteropServices; using System.Net; using System.Collections; namespace System.Windows.Forms { ////// /// public sealed class HtmlElementCollection : ICollection { private UnsafeNativeMethods.IHTMLElementCollection htmlElementCollection; private HtmlElement[] elementsArray; private HtmlShimManager shimManager; internal HtmlElementCollection(HtmlShimManager shimManager) { this.htmlElementCollection = null; this.elementsArray = null; this.shimManager = shimManager; } internal HtmlElementCollection(HtmlShimManager shimManager, UnsafeNativeMethods.IHTMLElementCollection elements) { this.htmlElementCollection = elements; this.elementsArray = null; this.shimManager = shimManager; Debug.Assert(this.NativeHtmlElementCollection != null, "The element collection object should implement IHTMLElementCollection"); } internal HtmlElementCollection(HtmlShimManager shimManager, HtmlElement[] array) { this.htmlElementCollection = null; this.elementsArray = array; this.shimManager = shimManager; } private UnsafeNativeMethods.IHTMLElementCollection NativeHtmlElementCollection { get { return this.htmlElementCollection; } } ///[To be supplied.] ////// /// public HtmlElement this[int index] { get { //do some bounds checking here... if (index < 0 || index >= this.Count) { throw new ArgumentOutOfRangeException("index", SR.GetString(SR.InvalidBoundArgument, "index", index, 0, this.Count - 1)); } if (this.NativeHtmlElementCollection != null) { UnsafeNativeMethods.IHTMLElement htmlElement = this.NativeHtmlElementCollection.Item((object)index, (object)0) as UnsafeNativeMethods.IHTMLElement; return (htmlElement != null) ? new HtmlElement(shimManager, htmlElement) : null; } else if (elementsArray != null) { return this.elementsArray[index]; } else { return null; } } } ///[To be supplied.] ////// /// public HtmlElement this[string elementId] { get { if (this.NativeHtmlElementCollection != null) { UnsafeNativeMethods.IHTMLElement htmlElement = this.NativeHtmlElementCollection.Item((object)elementId, (object)0) as UnsafeNativeMethods.IHTMLElement; return (htmlElement != null) ? new HtmlElement(shimManager, htmlElement) : null; } else if (elementsArray != null) { int count = this.elementsArray.Length; for (int i = 0; i < count; i++) { HtmlElement element = this.elementsArray[i]; if (element.Id == elementId) { return element; } } return null; // not found } else { return null; } } } ///[To be supplied.] ////// /// public HtmlElementCollection GetElementsByName(string name) { int count = this.Count; HtmlElement[] temp = new HtmlElement[count]; // count is the maximum # of matches int tempIndex = 0; for (int i = 0; i < count; i++) { HtmlElement element = this[i]; if (element.GetAttribute("name") == name) { temp[tempIndex] = element; tempIndex++; } } if (tempIndex == 0) { return new HtmlElementCollection(shimManager); } else { HtmlElement[] elements = new HtmlElement[tempIndex]; for (int i = 0; i < tempIndex; i++) { elements[i] = temp[i]; } return new HtmlElementCollection(shimManager, elements); } } ///[To be supplied.] ////// /// Returns the total number of elements in the collection. /// public int Count { get { if (this.NativeHtmlElementCollection != null) { return this.NativeHtmlElementCollection.GetLength(); } else if (elementsArray != null) { return this.elementsArray.Length; } else { return 0; } } } ////// bool ICollection.IsSynchronized { get { return false; } } /// /// object ICollection.SyncRoot { get { return this; } } /// /// void ICollection.CopyTo(Array dest, int index) { int count = this.Count; for (int i = 0; i < count; i++) { dest.SetValue(this[i], index++); } } /// /// public IEnumerator GetEnumerator() { HtmlElement[] htmlElements = new HtmlElement[this.Count]; ((ICollection)this).CopyTo(htmlElements, 0); return htmlElements.GetEnumerator(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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