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//------------------------------------------------------------------------------
// <copyright file="MSHTMLHostUtil.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
using System;
using System.Diagnostics;
using System.Drawing;
using System.Web.UI.Design.MobileControls.Util;
namespace System.Web.UI.Design.MobileControls.Adapters
{
[
System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand,
Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)
]
[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.")]
internal static class MSHTMLHostUtil
{
private const int CONTROL_WIDTH = 64;
private const int CONTROL_HEIGHT = 4096;
private static MSHTMLHost _tridentControl;
private static NativeMethods.IHTMLElement _htmlBody;
private static NativeMethods.IHTMLElement _htmlDivOuter;
private static NativeMethods.IHTMLElement _htmlDivInner;
private static void CreateControl()
{
if (null != _tridentControl && null != _htmlBody)
{
return;
}
_tridentControl = new MSHTMLHost();
_tridentControl.Size = new Size(CONTROL_WIDTH, CONTROL_HEIGHT);
_tridentControl.CreateTrident();
_tridentControl.ActivateTrident();
NativeMethods.IHTMLDocument2 htmlDoc2 = _tridentControl.GetDocument();
_htmlBody = htmlDoc2.GetBody();
}
internal static void ApplyStyle(String enterStyle, String exitStyle, String cssStyle)
{
MSHTMLHostUtil.CreateControl();
String bodyInnerHTML = "<div id=__divOuter nowrap style='width:1px; height:10px'>" +
enterStyle +
"<div id=__divInner" + cssStyle + "></div>" +
exitStyle +
"</div>";
// MessageBox.Show("Body HTML for empty content: " + bodyInnerHTML);
_htmlBody.SetInnerHTML(bodyInnerHTML);
NativeMethods.IHTMLDocument3 htmlDoc3 = (NativeMethods.IHTMLDocument3) _tridentControl.GetDocument();
Debug.Assert(null != htmlDoc3);
_htmlDivInner = htmlDoc3.GetElementById("__divInner");
_htmlDivOuter = htmlDoc3.GetElementById("__divOuter");
Debug.Assert(null != _htmlDivOuter && null != _htmlDivInner);
}
#if UNUSED_CODE
internal static int GetTextWidth(String text)
{
Debug.Assert(null != _htmlDivOuter && null != _htmlDivInner);
_htmlDivInner.SetInnerText(text);
NativeMethods.IHTMLElement2 htmlElement2 = (NativeMethods.IHTMLElement2) _htmlDivOuter;
Debug.Assert(null != htmlElement2);
return htmlElement2.GetClientWidth();
}
#endif
internal static int GetHtmlFragmentWidth(String htmlFragment)
{
Debug.Assert(null != _htmlDivOuter && null != _htmlDivInner);
_htmlDivInner.SetInnerHTML(htmlFragment);
NativeMethods.IHTMLElement2 htmlElement2 = (NativeMethods.IHTMLElement2) _htmlDivOuter;
Debug.Assert(null != htmlElement2);
return htmlElement2.GetClientWidth();
}
internal static int GetHtmlFragmentHeight(String htmlFragment)
{
Debug.Assert(null != _htmlDivOuter && null != _htmlDivInner);
_htmlDivInner.SetInnerHTML(htmlFragment);
NativeMethods.IHTMLElement2 htmlElement2 = (NativeMethods.IHTMLElement2) _htmlDivOuter;
Debug.Assert(null != htmlElement2);
return htmlElement2.GetClientHeight();
}
}
}
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