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//------------------------------------------------------------------------------
// <copyright file="WebBrowserSiteBase.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
using System.Runtime.Serialization.Formatters.Binary;
using System.Threading;
using System.Configuration.Assemblies;
using System.Runtime.Remoting;
using System.Runtime.InteropServices;
using System.Runtime.Serialization;
using System.ComponentModel;
using System.Diagnostics;
using System;
using System.Reflection;
using System.Globalization;
using System.Security.Permissions;
using Microsoft.Win32;
using System.Collections;
using System.Collections.Specialized;
using System.IO;
using System.Drawing;
using System.Windows.Forms.Design;
using System.Windows.Forms.ComponentModel;
using System.Windows.Forms.ComponentModel.Com2Interop;
using System.ComponentModel.Design;
using System.Windows.Forms;
using System.Drawing.Imaging;
using System.Drawing.Design;
using System.Security;
namespace System.Windows.Forms {
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase"]/*' />
/// <devdoc>
/// <para>
/// This class implements the necessary interfaces required for an ActiveX site.
///
/// This class is public, but has an internal constructor so that external
/// users can only reference the Type (cannot instantiate it directly).
/// Other classes have to inherit this class and expose it to the outside world.
///
/// This class does not have any public property/method/event by itself.
/// All implementations of the site interface methods are private, which
/// means that inheritors who want to override even a single method of one
/// of these interfaces will have to implement the whole interface.
/// </para>
/// </devdoc>
public class WebBrowserSiteBase
: UnsafeNativeMethods.IOleControlSite, UnsafeNativeMethods.IOleClientSite, UnsafeNativeMethods.IOleInPlaceSite, UnsafeNativeMethods.ISimpleFrameSite, UnsafeNativeMethods.IPropertyNotifySink, IDisposable {
private WebBrowserBase host;
private AxHost.ConnectionPointCookie connectionPoint;
//
// The constructor takes an WebBrowserBase as a parameter, so unfortunately,
// this cannot be used as a standalone site. It has to be used in conjunction
// with WebBrowserBase. Perhaps we can change it in future.
//
internal WebBrowserSiteBase(WebBrowserBase h) {
if (h == null) {
throw new ArgumentNullException("h");
}
this.host = h;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.Dispose"]/*' />
/// <devdoc>
/// <para>
/// Dispose(release the cookie)
/// </para>
/// </devdoc>
public void Dispose()
{
Dispose(true);
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.Dispose"]/*' />
/// <devdoc>
/// <para>
/// Release the cookie if we're disposing
/// </para>
/// </devdoc>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
StopEvents();
}
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.Host"]/*' />
/// <devdoc>
/// <para>
/// Retrieves the WebBrowserBase object set in the constructor.
/// </para>
/// </devdoc>
internal WebBrowserBase Host {
get {
return this.host;
}
}
//
// Interface implementations:
//
//
// IOleControlSite methods:
//
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleControlSite.OnControlInfoChanged"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleControlSite.OnControlInfoChanged() {
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleControlSite.LockInPlaceActive"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleControlSite.LockInPlaceActive(int fLock) {
return NativeMethods.E_NOTIMPL;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleControlSite.GetExtendedControl"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleControlSite.GetExtendedControl(out object ppDisp) {
ppDisp = null;
return NativeMethods.E_NOTIMPL;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleControlSite.TransformCoords"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleControlSite.TransformCoords(NativeMethods._POINTL pPtlHimetric, NativeMethods.tagPOINTF pPtfContainer, int dwFlags) {
if ((dwFlags & NativeMethods.ActiveX.XFORMCOORDS_HIMETRICTOCONTAINER) != 0) {
if ((dwFlags & NativeMethods.ActiveX.XFORMCOORDS_SIZE) != 0) {
pPtfContainer.x = (float) WebBrowserHelper.HM2Pix(pPtlHimetric.x, WebBrowserHelper.LogPixelsX);
pPtfContainer.y = (float) WebBrowserHelper.HM2Pix(pPtlHimetric.y, WebBrowserHelper.LogPixelsY);
}
else if ((dwFlags & NativeMethods.ActiveX.XFORMCOORDS_POSITION) != 0) {
pPtfContainer.x = (float) WebBrowserHelper.HM2Pix(pPtlHimetric.x, WebBrowserHelper.LogPixelsX);
pPtfContainer.y = (float) WebBrowserHelper.HM2Pix(pPtlHimetric.y, WebBrowserHelper.LogPixelsY);
}
else {
return NativeMethods.E_INVALIDARG;
}
}
else if ((dwFlags & NativeMethods.ActiveX.XFORMCOORDS_CONTAINERTOHIMETRIC) != 0) {
if ((dwFlags & NativeMethods.ActiveX.XFORMCOORDS_SIZE) != 0) {
pPtlHimetric.x = WebBrowserHelper.Pix2HM((int)pPtfContainer.x, WebBrowserHelper.LogPixelsX);
pPtlHimetric.y = WebBrowserHelper.Pix2HM((int)pPtfContainer.y, WebBrowserHelper.LogPixelsY);
}
else if ((dwFlags & NativeMethods.ActiveX.XFORMCOORDS_POSITION) != 0) {
pPtlHimetric.x = WebBrowserHelper.Pix2HM((int)pPtfContainer.x, WebBrowserHelper.LogPixelsX);
pPtlHimetric.y = WebBrowserHelper.Pix2HM((int)pPtfContainer.y, WebBrowserHelper.LogPixelsY);
}
else {
return NativeMethods.E_INVALIDARG;
}
}
else {
return NativeMethods.E_INVALIDARG;
}
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleControlSite.TranslateAccelerator"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleControlSite.TranslateAccelerator(ref NativeMethods.MSG pMsg, int grfModifiers) {
Debug.Assert(!this.Host.GetAXHostState(WebBrowserHelper.siteProcessedInputKey), "Re-entering UnsafeNativeMethods.IOleControlSite.TranslateAccelerator!!!");
this.Host.SetAXHostState(WebBrowserHelper.siteProcessedInputKey, true);
Message msg = new Message();
msg.Msg = pMsg.message;
msg.WParam = pMsg.wParam;
msg.LParam = pMsg.lParam;
msg.HWnd = pMsg.hwnd;
try {
bool f = ((Control)this.Host).PreProcessControlMessage(ref msg) == PreProcessControlState.MessageProcessed;
return f ? NativeMethods.S_OK : NativeMethods.S_FALSE;
}
finally {
this.Host.SetAXHostState(WebBrowserHelper.siteProcessedInputKey, false);
}
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleControlSite.OnFocus"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleControlSite.OnFocus(int fGotFocus) {
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleControlSite.ShowPropertyFrame"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleControlSite.ShowPropertyFrame() {
return NativeMethods.E_NOTIMPL;
}
//
// IOleClientSite methods:
//
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleClientSite.SaveObject"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleClientSite.SaveObject() {
return NativeMethods.E_NOTIMPL;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleClientSite.GetMoniker"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleClientSite.GetMoniker(int dwAssign, int dwWhichMoniker, out Object moniker) {
moniker = null;
return NativeMethods.E_NOTIMPL;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleClientSite.GetContainer"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleClientSite.GetContainer(out UnsafeNativeMethods.IOleContainer container) {
container = this.Host.GetParentContainer();
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleClientSite.ShowObject"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleClientSite.ShowObject() {
if (this.Host.ActiveXState >= WebBrowserHelper.AXState.InPlaceActive) {
IntPtr hwnd;
if (NativeMethods.Succeeded(this.Host.AXInPlaceObject.GetWindow(out hwnd))) {
if (this.Host.GetHandleNoCreate() != hwnd) {
if (hwnd != IntPtr.Zero) {
this.Host.AttachWindow(hwnd);
this.OnActiveXRectChange(new NativeMethods.COMRECT(this.Host.Bounds));
}
}
}
else if (this.Host.AXInPlaceObject is UnsafeNativeMethods.IOleInPlaceObjectWindowless) {
throw new InvalidOperationException(SR.GetString(SR.AXWindowlessControl));
}
}
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleClientSite.OnShowWindow"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleClientSite.OnShowWindow(int fShow) {
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleClientSite.RequestNewObjectLayout"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleClientSite.RequestNewObjectLayout() {
return NativeMethods.E_NOTIMPL;
}
//
// IOleInPlaceSite methods:
//
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.GetWindow"]/*' />
/// <internalonly/>
IntPtr UnsafeNativeMethods.IOleInPlaceSite.GetWindow() {
try
{
return UnsafeNativeMethods.GetParent(new HandleRef(Host, Host.Handle));
}
catch (Exception t)
{
Debug.Fail(t.ToString());
throw;
}
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.ContextSensitiveHelp"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.ContextSensitiveHelp(int fEnterMode) {
return NativeMethods.E_NOTIMPL;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.CanInPlaceActivate"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.CanInPlaceActivate() {
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.OnInPlaceActivate"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.OnInPlaceActivate() {
this.Host.ActiveXState = WebBrowserHelper.AXState.InPlaceActive;
this.OnActiveXRectChange(new NativeMethods.COMRECT(this.Host.Bounds));
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.OnUIActivate"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.OnUIActivate() {
this.Host.ActiveXState = WebBrowserHelper.AXState.UIActive;
this.Host.GetParentContainer().OnUIActivate(this.Host);
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.GetWindowContext"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.GetWindowContext(out UnsafeNativeMethods.IOleInPlaceFrame ppFrame, out UnsafeNativeMethods.IOleInPlaceUIWindow ppDoc,
NativeMethods.COMRECT lprcPosRect, NativeMethods.COMRECT lprcClipRect, NativeMethods.tagOIFI lpFrameInfo) {
ppDoc = null;
ppFrame = this.Host.GetParentContainer();
lprcPosRect.left = this.Host.Bounds.X;
lprcPosRect.top = this.Host.Bounds.Y;
lprcPosRect.right = this.Host.Bounds.Width + this.Host.Bounds.X;
lprcPosRect.bottom = this.Host.Bounds.Height + this.Host.Bounds.Y;
lprcClipRect = WebBrowserHelper.GetClipRect();
if (lpFrameInfo != null) {
lpFrameInfo.cb = Marshal.SizeOf(typeof(NativeMethods.tagOIFI));
lpFrameInfo.fMDIApp = false;
lpFrameInfo.hAccel = IntPtr.Zero;
lpFrameInfo.cAccelEntries = 0;
lpFrameInfo.hwndFrame = (this.Host.ParentInternal == null) ? IntPtr.Zero : this.Host.ParentInternal.Handle;
}
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.Scroll"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.Scroll(NativeMethods.tagSIZE scrollExtant) {
return NativeMethods.S_FALSE;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.OnUIDeactivate"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.OnUIDeactivate(int fUndoable) {
this.Host.GetParentContainer().OnUIDeactivate(this.Host);
if (this.Host.ActiveXState > WebBrowserHelper.AXState.InPlaceActive) {
this.Host.ActiveXState = WebBrowserHelper.AXState.InPlaceActive;
}
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.OnInPlaceDeactivate"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.OnInPlaceDeactivate() {
if (this.Host.ActiveXState == WebBrowserHelper.AXState.UIActive) {
((UnsafeNativeMethods.IOleInPlaceSite)this).OnUIDeactivate(0);
}
this.Host.GetParentContainer().OnInPlaceDeactivate(this.Host);
this.Host.ActiveXState = WebBrowserHelper.AXState.Running;
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.DiscardUndoState"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.DiscardUndoState() {
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.DeactivateAndUndo"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.DeactivateAndUndo() {
return this.Host.AXInPlaceObject.UIDeactivate();
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IOleInPlaceSite.OnPosRectChange"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IOleInPlaceSite.OnPosRectChange(NativeMethods.COMRECT lprcPosRect) {
return this.OnActiveXRectChange(lprcPosRect);
}
//
// ISimpleFrameSite methods:
//
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.ISimpleFrameSite.PreMessageFilter"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.ISimpleFrameSite.PreMessageFilter(IntPtr hwnd, int msg, IntPtr wp, IntPtr lp, ref IntPtr plResult, ref int pdwCookie) {
return NativeMethods.S_OK;
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.ISimpleFrameSite.PostMessageFilter"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.ISimpleFrameSite.PostMessageFilter(IntPtr hwnd, int msg, IntPtr wp, IntPtr lp, ref IntPtr plResult, int dwCookie) {
return NativeMethods.S_FALSE;
}
//
// IPropertyNotifySink methods:
//
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IPropertyNotifySink.OnChanged"]/*' />
/// <internalonly/>
void UnsafeNativeMethods.IPropertyNotifySink.OnChanged(int dispid) {
// Some controls fire OnChanged() notifications when getting values of some properties. ASURT 20190.
// To prevent this kind of recursion, we check to see if we are already inside a OnChanged() call.
//
if (this.Host.NoComponentChangeEvents != 0)
return;
this.Host.NoComponentChangeEvents++;
try
{
OnPropertyChanged(dispid);
}
catch (Exception t)
{
Debug.Fail(t.ToString());
throw;
}
finally {
this.Host.NoComponentChangeEvents--;
}
}
/// <include file='doc\WebBrowserSiteBase.uex' path='docs/doc[@for="WebBrowserSiteBase.UnsafeNativeMethods.IPropertyNotifySink.OnRequestEdit"]/*' />
/// <internalonly/>
int UnsafeNativeMethods.IPropertyNotifySink.OnRequestEdit(int dispid) {
return NativeMethods.S_OK;
}
//
// Virtual overrides:
//
internal virtual void OnPropertyChanged(int dispid) {
try
{
ISite site = this.Host.Site;
if (site != null)
{
IComponentChangeService changeService = (IComponentChangeService)site.GetService(typeof(IComponentChangeService));
if (changeService != null)
{
try
{
changeService.OnComponentChanging(this.Host, null);
}
catch (CheckoutException coEx)
{
if (coEx == CheckoutException.Canceled)
{
return;
}
throw coEx;
}
// Now notify the change service that the change was successful.
//
changeService.OnComponentChanged(this.Host, null, null, null);
}
}
}
catch (Exception t)
{
Debug.Fail(t.ToString());
throw;
}
}
//
// Internal helper methods:
//
internal WebBrowserBase GetAXHost() {
return this.Host;
}
internal void StartEvents() {
if (connectionPoint != null)
return;
Object nativeObject = this.Host.activeXInstance;
if (nativeObject != null) {
try
{
connectionPoint = new AxHost.ConnectionPointCookie(nativeObject, this, typeof(UnsafeNativeMethods.IPropertyNotifySink));
}
catch (Exception ex)
{
if (ClientUtils.IsCriticalException(ex))
{
throw;
}
}
}
}
internal void StopEvents() {
if (connectionPoint != null) {
connectionPoint.Disconnect();
connectionPoint = null;
}
}
private int OnActiveXRectChange(NativeMethods.COMRECT lprcPosRect) {
this.Host.AXInPlaceObject.SetObjectRects(
NativeMethods.COMRECT.FromXYWH(0, 0, lprcPosRect.right - lprcPosRect.left, lprcPosRect.bottom - lprcPosRect.top),
WebBrowserHelper.GetClipRect());
this.Host.MakeDirty();
return NativeMethods.S_OK;
}
}
}
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