Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / UIAutomation / Win32Providers / MS / Internal / AutomationProxies / WindowsStatic.cs / 1305600 / WindowsStatic.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Windows Static Proxy // // History: // 07/01/2003 : a-jeanp Heavily revised //--------------------------------------------------------------------------- using System; using System.Text; using System.Collections; using System.Windows; using System.Windows.Automation; using System.Windows.Automation.Provider; using MS.Win32; namespace MS.Internal.AutomationProxies { class WindowsStatic: ProxyHwnd { // ----------------------------------------------------- // // Constructors // // ----------------------------------------------------- #region Constructors WindowsStatic (IntPtr hwnd, ProxyFragment parent, StaticType type, int style) : base( hwnd, parent, 0) { _type = type; _style = style; if (type == StaticType.Text) { _cControlType = ControlType.Text; _fIsContent = false; _fControlHasLabel = false; } else { _cControlType = ControlType.Image; } // support for events _createOnEvent = new WinEventTracker.ProxyRaiseEvents (RaiseEvents); } #endregion #region Proxy Create // Static Create method called by UIAutomation to create this proxy. // returns null if unsuccessful internal static IRawElementProviderSimple Create(IntPtr hwnd, int idChild, int idObject) { return Create(hwnd, idChild); } private static IRawElementProviderSimple Create(IntPtr hwnd, int idChild) { // This proxy should not be created with idChild != 0, // unless it is a link label. if (idChild != 0 && !IsLinkLabel(hwnd)) { System.Diagnostics.Debug.Assert(idChild == 0, "Invalid Child Id, idChild != 0"); throw new ArgumentOutOfRangeException("idChild", idChild, SR.Get(SRID.ShouldBeZero)); } StaticType type; int style; try { string className = Misc.GetClassName(hwnd).ToLower(System.Globalization.CultureInfo.InvariantCulture); // Both labels and linklabels have "STATIC" class names if (WindowsFormsHelper.IsWindowsFormsControl(className)) { if (IsLinkLabel(hwnd)) { // Use a different proxy for LinkLabel. return FormsLink.Create(hwnd, 0); } } else { // if it's not a Windows Forms control, we didn't want substring matching if (className != "static") { return null; } } style = Misc.GetWindowStyle(hwnd) & NativeMethods.SS_TYPEMASK; type = GetStaticTypeFromStyle(style); if (type == StaticType.Unsupported) { return null; } } catch (ElementNotAvailableException) { return null; } return new WindowsStatic(hwnd, null, type, style); } // Static Create method called by the event tracker system // WinEvents are raised because items exist. So it makes sense to create the item and // check for details afterward. internal static void RaiseEvents (IntPtr hwnd, int eventId, object idProp, int idObject, int idChild) { if (idObject != NativeMethods.OBJID_VSCROLL && idObject != NativeMethods.OBJID_HSCROLL) { WindowsStatic wtv = (WindowsStatic) Create (hwnd, 0); // If wtv is null the window handle is invalid or no longer available (or something, // Create eats the problem). if (wtv != null) wtv.DispatchEvents (eventId, idProp, idObject, idChild); } } #endregion //------------------------------------------------------ // // Patterns Implementation // //----------------------------------------------------- #region ProxySimple Interface // Process all the Logical and Raw Element Properties internal override object GetElementProperty (AutomationProperty idProp) { if (idProp == AutomationElement.AccessKeyProperty) { return Misc.AccessKey(Misc.ProxyGetText(_hwnd)); } return base.GetElementProperty (idProp); } internal override bool IsKeyboardFocusable() { // A static control is never focusable via the keyboard. return false; } //Gets the localized name internal override string LocalizedName { get { if (_type == StaticType.Text) { return Misc.StripMnemonic(Misc.ProxyGetText(_hwnd)); } return null; } } #endregion // ------------------------------------------------------ // // Private Methods // // ------------------------------------------------------ #region Private Methods private static bool IsLinkLabel(IntPtr hwnd) { // [[....]]: // could be a label or a linklabel // we differentiate based on whether the item has children or not Accessible acc = null; return Accessible.AccessibleObjectFromWindow(hwnd, NativeMethods.OBJID_CLIENT, ref acc) == NativeMethods.S_OK && acc != null && acc.ChildCount > 0; } private static StaticType GetStaticTypeFromStyle(int style) { StaticType staticType = StaticType.Unsupported; switch (style) { case NativeMethods.SS_ICON: staticType = StaticType.Icon; break; case NativeMethods.SS_BITMAP: staticType = StaticType.Bitmap; break; case NativeMethods.SS_LEFT: case NativeMethods.SS_CENTER: case NativeMethods.SS_RIGHT: case NativeMethods.SS_BLACKRECT: case NativeMethods.SS_GRAYRECT: case NativeMethods.SS_WHITERECT: case NativeMethods.SS_BLACKFRAME: case NativeMethods.SS_GRAYFRAME: case NativeMethods.SS_WHITEFRAME: case NativeMethods.SS_SIMPLE: case NativeMethods.SS_LEFTNOWORDWRAP: case NativeMethods.SS_ETCHEDHORZ: case NativeMethods.SS_ETCHEDVERT: case NativeMethods.SS_ETCHEDFRAME: case NativeMethods.SS_OWNERDRAW: staticType = StaticType.Text; break; case NativeMethods.SS_ENHMETAFILE: case NativeMethods.SS_USERITEM: default: // current patterns do not account for images break; } return staticType; } #endregion // ----------------------------------------------------- // // Private Fields and Types Declaration // // ------------------------------------------------------ #region Private Fields StaticType _type; int _style; // Static control types based on style constants enum StaticType { Bitmap, Icon, Text, Unsupported }; } #endregion } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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