mcs/class/referencesource/System.Web.Mobile/UI/MobileControls/Design/Util/MSHTMLHost.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="MSHTMLHost.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //------------------------------------------------------------------------------
   6
   7 // MSHTMLHost.cs
   8 //
   9 // 12/17/98: Created: [....]
  10 //
  11
  12 namespace System.Web.UI.Design.MobileControls.Util {
  13     using System.Runtime.Serialization.Formatters;
  14
  15     using System.Runtime.InteropServices;
  16     using System.ComponentModel;
  17
  18     using System.Diagnostics;
  19
  20     using System;
  21
  22     using Microsoft.Win32;
  23     using System.Windows.Forms;
  24
  25     /// <include file='doc\MSHTMLHost.uex' path='docs/doc[@for="MSHTMLHost"]/*' />
  26     /// <devdoc>
  27     ///    Control that hosts a Trident DocObject.
  28     /// </devdoc>
  29     /// <internalonly/>
  30     //
  31
  32
  33     [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand, Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)]
  34     [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
  35     internal sealed class MSHTMLHost : Control {
  36         private TridentSite tridentSite;
  37
  38         internal MSHTMLHost() : base() {
  39         }
  40
  41         public NativeMethods.IHTMLDocument2 GetDocument() {
  42             Debug.Assert(tridentSite != null,
  43                          "Cannot call getDocument before calling createTrident");
  44
  45             return tridentSite.GetDocument();
  46         }
  47
  48         protected override CreateParams CreateParams {
  49              get {
  50                 CreateParams cp = base.CreateParams;
  51
  52                 cp.ExStyle |= NativeMethods.WS_EX_STATICEDGE;
  53                 return cp;
  54             }
  55         }
  56
  57         internal bool CreateTrident() {
  58             Debug.Assert(Handle != IntPtr.Zero,
  59                          "MSHTMLHost must first be created before createTrident is called");
  60
  61             try {
  62                 tridentSite = new TridentSite(this);
  63             }
  64             catch (Exception e) {
  65                 Debug.WriteLine("Exception caught in MSHTMLHost::CreateTrident\n\t" + e.ToString());
  66                 return false;
  67             }
  68             return true;
  69         }
  70
  71         internal void ActivateTrident() {
  72             Debug.Assert(tridentSite != null,
  73                          "cannot call activateTrident before calling createTrident");
  74
  75             tridentSite.Activate();
  76         }
  77     }
  78
  79
  80     /// <include file='doc\MSHTMLHost.uex' path='docs/doc[@for="TridentSite"]/*' />
  81     /// <devdoc>
  82     ///    Implements the client site for Trident DocObject
  83     /// </devdoc>
  84     [ClassInterface(ClassInterfaceType.None)]
  85     [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
  86     internal class TridentSite : NativeMethods.IOleClientSite, NativeMethods.IOleDocumentSite, NativeMethods.IOleInPlaceSite, NativeMethods.IOleInPlaceFrame, NativeMethods.IDocHostUIHandler {
  87
  88         protected Control parentControl;
  89         protected NativeMethods.IOleDocumentView tridentView;
  90         protected NativeMethods.IOleObject tridentOleObject;
  91         protected NativeMethods.IHTMLDocument2 tridentDocument;
  92
  93         protected EventHandler resizeHandler;
  94
  95         internal TridentSite(Control parent) {
  96             Debug.Assert((parent != null) && (parent.Handle != IntPtr.Zero),
  97                          "Invalid control passed in as parent of Trident window");
  98
  99             parentControl = parent;
 100             resizeHandler = new EventHandler(this.OnParentResize);
 101             parentControl.Resize += resizeHandler;
 102
 103             CreateDocument();
 104         }
 105
 106         public NativeMethods.IHTMLDocument2 GetDocument() {
 107             return tridentDocument;
 108         }
 109
 110         internal void Activate() {
 111             ActivateDocument();
 112         }
 113
 114         protected virtual void OnParentResize(object src, EventArgs e) {
 115             if (tridentView != null) {
 116                 NativeMethods.COMRECT r = new NativeMethods.COMRECT();
 117
 118                 NativeMethods.GetClientRect(parentControl.Handle, r);
 119                 tridentView.SetRect(r);
 120             }
 121         }
 122
 123
 124         ///////////////////////////////////////////////////////////////////////////
 125         // IOleClientSite Implementation
 126
 127         public virtual void SaveObject() {
 128         }
 129
 130         public virtual object GetMoniker(int dwAssign, int dwWhichMoniker) {
 131             throw new COMException(String.Empty, NativeMethods.E_NOTIMPL);
 132         }
 133
 134         public virtual int GetContainer(out NativeMethods.IOleContainer ppContainer) {
 135             ppContainer = null;
 136             return NativeMethods.E_NOINTERFACE;
 137         }
 138
 139         public virtual void ShowObject() {
 140         }
 141
 142         public virtual void OnShowWindow(int fShow) {
 143         }
 144
 145         public virtual void RequestNewObjectLayout() {
 146         }
 147
 148
 149         ///////////////////////////////////////////////////////////////////////////
 150         // IOleDocumentSite Implementation
 151
 152         public virtual int ActivateMe(NativeMethods.IOleDocumentView pViewToActivate) {
 153             Debug.Assert(pViewToActivate != null,
 154                          "Expected the view to be non-null");
 155             if (pViewToActivate == null)
 156                 return NativeMethods.E_INVALIDARG;
 157
 158             NativeMethods.COMRECT r = new NativeMethods.COMRECT();
 159
 160             NativeMethods.GetClientRect(parentControl.Handle, r);
 161
 162             tridentView = pViewToActivate;
 163             tridentView.SetInPlaceSite((NativeMethods.IOleInPlaceSite)this);
 164             tridentView.UIActivate(1);
 165             tridentView.SetRect(r);
 166             tridentView.Show(1);
 167
 168             return NativeMethods.S_OK;
 169         }
 170
 171
 172         ///////////////////////////////////////////////////////////////////////////
 173         // IOleInPlaceSite Implementation
 174
 175         public virtual IntPtr GetWindow() {
 176             return parentControl.Handle;
 177         }
 178
 179         public virtual void ContextSensitiveHelp(int fEnterMode) {
 180             throw new COMException(String.Empty, NativeMethods.E_NOTIMPL);
 181         }
 182
 183         public virtual int CanInPlaceActivate() {
 184             return NativeMethods.S_OK;
 185         }
 186
 187         public virtual void OnInPlaceActivate() {
 188         }
 189
 190         public virtual void OnUIActivate() {
 191         }
 192
 193         public virtual void GetWindowContext(out NativeMethods.IOleInPlaceFrame ppFrame, out NativeMethods.IOleInPlaceUIWindow ppDoc, NativeMethods.COMRECT lprcPosRect, NativeMethods.COMRECT lprcClipRect, NativeMethods.tagOIFI lpFrameInfo) {
 194
 195             ppFrame = (NativeMethods.IOleInPlaceFrame)this;
 196             ppDoc = null;
 197
 198             NativeMethods.GetClientRect(parentControl.Handle, lprcPosRect);
 199             NativeMethods.GetClientRect(parentControl.Handle, lprcClipRect);
 200
 201             lpFrameInfo.cb = System.Runtime.InteropServices.Marshal.SizeOf(typeof(NativeMethods.tagOIFI));
 202             lpFrameInfo.fMDIApp = 0;
 203             lpFrameInfo.hwndFrame = parentControl.Handle;
 204             lpFrameInfo.hAccel = IntPtr.Zero;
 205             lpFrameInfo.cAccelEntries = 0;
 206         }
 207
 208         public virtual int Scroll(NativeMethods.tagSIZE scrollExtant) {
 209             return(NativeMethods.E_NOTIMPL);
 210         }
 211
 212         public virtual void OnUIDeactivate(int fUndoable) {
 213             // NOTE, [....], 7/99: Don't return E_NOTIMPL. Somehow doing nothing and returning S_OK
 214             //    fixes trident hosting in Win2000.
 215         }
 216
 217         public virtual void OnInPlaceDeactivate() {
 218         }
 219
 220         public virtual void DiscardUndoState() {
 221             throw new COMException(SR.GetString(SR.MSHTMLHost_Not_Implemented), NativeMethods.E_NOTIMPL);
 222         }
 223
 224         public virtual void DeactivateAndUndo() {
 225         }
 226
 227         public virtual int OnPosRectChange(NativeMethods.COMRECT lprcPosRect) {
 228             return NativeMethods.S_OK;
 229         }
 230
 231
 232         ///////////////////////////////////////////////////////////////////////////
 233         // IOleInPlaceFrame Implementation
 234
 235         public virtual void GetBorder(NativeMethods.COMRECT lprectBorder) {
 236             throw new COMException(String.Empty, NativeMethods.E_NOTIMPL);
 237         }
 238
 239         public virtual void RequestBorderSpace(NativeMethods.COMRECT pborderwidths) {
 240             throw new COMException(String.Empty, NativeMethods.E_NOTIMPL);
 241         }
 242
 243         public virtual void SetBorderSpace(NativeMethods.COMRECT pborderwidths) {
 244             throw new COMException(String.Empty, NativeMethods.E_NOTIMPL);
 245         }
 246
 247         public virtual void SetActiveObject(NativeMethods.IOleInPlaceActiveObject pActiveObject, string pszObjName) {
 248             // NOTE, [....], 7/99: Don't return E_NOTIMPL. Somehow doing nothing and returning S_OK
 249             //    fixes trident hosting in Win2000.
 250             // throw new COMException(String.Empty, NativeMethods.E_NOTIMPL);
 251         }
 252
 253         public virtual void InsertMenus(IntPtr hmenuShared, object lpMenuWidths) {
 254             throw new COMException(String.Empty, NativeMethods.E_NOTIMPL);
 255         }
 256
 257         public virtual void SetMenu(IntPtr hmenuShared, IntPtr holemenu, IntPtr hwndActiveObject) {
 258             throw new COMException(String.Empty, NativeMethods.E_NOTIMPL);
 259         }
 260
 261         public virtual void RemoveMenus(IntPtr hmenuShared) {
 262             throw new COMException(String.Empty, NativeMethods.E_NOTIMPL);
 263         }
 264
 265         public virtual void SetStatusText(string pszStatusText) {
 266         }
 267
 268         public virtual void EnableModeless(int fEnable) {
 269         }
 270
 271         public virtual int TranslateAccelerator(ref NativeMethods.MSG lpmsg, short wID) {
 272             return NativeMethods.S_FALSE;
 273         }
 274
 275
 276         ///////////////////////////////////////////////////////////////////////////
 277         // IDocHostUIHandler Implementation
 278
 279         public virtual int ShowContextMenu(int dwID, NativeMethods.POINT pt, object pcmdtReserved, object pdispReserved) {
 280             return NativeMethods.S_OK;
 281         }
 282
 283         public virtual int GetHostInfo(NativeMethods.DOCHOSTUIINFO info) {
 284             info.dwDoubleClick = NativeMethods.DOCHOSTUIDBLCLICK.DEFAULT;
 285             info.dwFlags = NativeMethods.DOCHOSTUIFLAG.FLAT_SCROLLBAR |
 286                            NativeMethods.DOCHOSTUIFLAG.NO3DBORDER |
 287                            NativeMethods.DOCHOSTUIFLAG.DIALOG |
 288                            NativeMethods.DOCHOSTUIFLAG.DISABLE_SCRIPT_INACTIVE;
 289
 290             return NativeMethods.S_OK;
 291         }
 292
 293         public virtual int EnableModeless(bool fEnable) {
 294             return NativeMethods.S_OK;
 295         }
 296
 297         public virtual int ShowUI(int dwID, NativeMethods.IOleInPlaceActiveObject activeObject, NativeMethods.IOleCommandTarget commandTarget, NativeMethods.IOleInPlaceFrame frame, NativeMethods.IOleInPlaceUIWindow doc) {
 298             return NativeMethods.S_OK;
 299         }
 300
 301         public virtual int HideUI() {
 302             return NativeMethods.S_OK;
 303         }
 304
 305         public virtual int UpdateUI() {
 306             return NativeMethods.S_OK;
 307         }
 308
 309         public virtual int OnDocWindowActivate(bool fActivate) {
 310             return NativeMethods.E_NOTIMPL;
 311         }
 312
 313         public virtual int OnFrameWindowActivate(bool fActivate) {
 314             return NativeMethods.E_NOTIMPL;
 315         }
 316
 317         public virtual int ResizeBorder(NativeMethods.COMRECT rect, NativeMethods.IOleInPlaceUIWindow doc, bool fFrameWindow) {
 318             return NativeMethods.E_NOTIMPL;
 319         }
 320
 321         public virtual int GetOptionKeyPath(string[] pbstrKey, int dw) {
 322             pbstrKey[0] = null;
 323             return NativeMethods.S_OK;
 324         }
 325
 326         public virtual int GetDropTarget(NativeMethods.IOleDropTarget pDropTarget, out NativeMethods.IOleDropTarget ppDropTarget) {
 327             ppDropTarget = null;
 328             return NativeMethods.S_FALSE;
 329         }
 330
 331         public virtual int GetExternal(out object ppDispatch) {
 332             ppDispatch = null;
 333             return NativeMethods.S_OK;
 334         }
 335
 336         public virtual int TranslateAccelerator(ref NativeMethods.MSG msg, ref Guid group, int nCmdID) {
 337             return NativeMethods.S_OK;
 338         }
 339
 340         public virtual int TranslateUrl(int dwTranslate, string strUrlIn, out string pstrUrlOut) {
 341             pstrUrlOut = null;
 342             return NativeMethods.E_NOTIMPL;
 343         }
 344
 345         public virtual int FilterDataObject(NativeMethods.IOleDataObject pDO, out NativeMethods.IOleDataObject ppDORet) {
 346             ppDORet = null;
 347             return NativeMethods.S_OK;
 348         }
 349
 350
 351         ///////////////////////////////////////////////////////////////////////////
 352         // Implementation
 353
 354         /// <include file='doc\MSHTMLHost.uex' path='docs/doc[@for="TridentSite.CreateDocument"]/*' />
 355         /// <devdoc>
 356         ///     Creates a new instance of mshtml and initializes it as a new document
 357         ///     using its IPersistStreamInit.
 358         /// </devdoc>
 359         protected void CreateDocument() {
 360
 361             try {
 362                 // Create an instance of Trident
 363                 tridentDocument = (NativeMethods.IHTMLDocument2)new NativeMethods.HTMLDocument();
 364                 tridentOleObject = (NativeMethods.IOleObject)tridentDocument;
 365
 366                 // Initialize its client site
 367                 tridentOleObject.SetClientSite((NativeMethods.IOleClientSite)this);
 368
 369                 // Initialize it
 370                 NativeMethods.IPersistStreamInit psi = (NativeMethods.IPersistStreamInit)tridentDocument;
 371                 psi.InitNew();
 372             }
 373             catch (Exception e) {
 374                 Debug.Fail(e.ToString());
 375                 throw e;
 376             }
 377         }
 378
 379         /// <include file='doc\MSHTMLHost.uex' path='docs/doc[@for="TridentSite.ActivateDocument"]/*' />
 380         /// <devdoc>
 381         ///     Activates the mshtml instance
 382         /// </devdoc>
 383         protected void ActivateDocument() {
 384             Debug.Assert(tridentOleObject != null,
 385                          "How'd we get here when trident is null!");
 386
 387             try {
 388                 NativeMethods.COMRECT r = new NativeMethods.COMRECT();
 389
 390                 NativeMethods.GetClientRect(parentControl.Handle, r);
 391                 tridentOleObject.DoVerb(NativeMethods.OLEIVERB_UIACTIVATE, IntPtr.Zero, (NativeMethods.IOleClientSite)this, 0, parentControl.Handle, r);
 392             }
 393             catch (Exception e) {
 394                 Debug.Fail(e.ToString());
 395             }
 396         }
 397     }
 398 }