MSHTMLHostUtil.cs source code in C# .NET

                        
Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / Design / Adapters / MSHTMLHostUtil.cs / 1305376 / MSHTMLHostUtil.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

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 = "
" +
                                   enterStyle + 
                                   "
" + 
                                   exitStyle +
                                   "
"; 

            // 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(); 
        }
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

                        

                        
                        

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