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//------------------------------------------------------------------------------
// <copyright file="DesignerTextBoxAdapter.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
using System.Globalization;
using System.IO;
using System.Web.Mobile;
using System.Web.UI.MobileControls;
using System.Web.UI.MobileControls.Adapters;
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 class DesignerTextBoxAdapter : HtmlTextBoxAdapter
{
// required width may differ a little bit from actual exact pixel value
private const int SAFETY_MARGIN = 12;
// size after which we simply assume the control is too large to fit
// into its container.
private const int LARGESIZE_THRESHOLD = 100;
public override MobileCapabilities Device
{
get
{
return DesignerCapabilities.Instance;
}
}
public override void Render(HtmlMobileTextWriter writer)
{
// Invalid text writers are not supported in this Adapter.
if (!(writer is DesignerTextWriter))
{
return;
}
byte templateStatus;
bool pwd = Control.Password;
int size = Control.Size;
int fittingSize;
int maxWidth = DesignerAdapterUtil.GetMaxWidthToFit(Control, out templateStatus);
if (maxWidth == 0)
{
if (templateStatus == DesignerAdapterUtil.CONTROL_IN_TEMPLATE_NONEDIT)
{
maxWidth = DesignerAdapterUtil.CONTROL_MAX_WIDTH_IN_TEMPLATE;
}
else if (DesignerAdapterUtil.InMobileUserControl(Control))
{
maxWidth = Constants.ControlMaxsizeAtToplevel;
}
}
if (maxWidth == 0)
{
return;
}
bool restoreEmptyFontName = false;
if (String.IsNullOrEmpty((String) Style[Style.FontNameKey, true]))
{
// MSHTMLHostUtil is using another font by default.
// Setting the font name to the one that is actually
// used by default for the desig-time rendering
// assures that the requiredWidth returned by
// MSHTMLHostUtil.GetHtmlFragmentWidth is accurate.
Style[Style.FontNameKey] = "Arial";
restoreEmptyFontName = true;
}
int requiredWidth = 0;
DesignerTextWriter tw;
tw = new DesignerTextWriter(false);
tw.EnterLayout(Style);
String enterLayout = tw.ToString();
tw = new DesignerTextWriter(false);
tw.ExitLayout(Style);
String exitLayout = tw.ToString();
tw = new DesignerTextWriter(false);
tw.WriteBeginTag("input");
tw.WriteStyleAttribute(Style, null);
if (size > 0)
{
tw.WriteAttribute("size", "{0}");
}
tw.Write("/>");
String htmlFragment = tw.ToString();
MSHTMLHostUtil.ApplyStyle(enterLayout, exitLayout, null);
if (size < LARGESIZE_THRESHOLD)
{
requiredWidth = MSHTMLHostUtil.GetHtmlFragmentWidth(size > 0 ? String.Format(CultureInfo.InvariantCulture, htmlFragment, size) : htmlFragment);
}
if (requiredWidth + SAFETY_MARGIN > maxWidth || size >= LARGESIZE_THRESHOLD)
{
if (size == 0)
{
tw = new DesignerTextWriter(false);
tw.WriteBeginTag("input");
tw.WriteStyleAttribute(Style, null);
tw.WriteAttribute("size", "{0}");
tw.Write("/>");
htmlFragment = tw.ToString();
}
fittingSize = 0;
do
{
fittingSize++;
requiredWidth = MSHTMLHostUtil.GetHtmlFragmentWidth(String.Format(CultureInfo.InvariantCulture, htmlFragment, fittingSize));
}
while (requiredWidth + SAFETY_MARGIN <= maxWidth);
if (fittingSize > 1)
{
fittingSize--;
}
}
else
{
fittingSize = size;
}
if (restoreEmptyFontName)
{
Style[Style.FontNameKey] = String.Empty;
}
Alignment alignment = (Alignment) Style[Style.AlignmentKey, true];
String width = DesignerAdapterUtil.GetWidth(Control);
writer.Write("<div style='width:" + width);
if (alignment != Alignment.NotSet)
{
writer.Write(";text-align:" + Enum.GetName(typeof(Alignment), alignment));
}
writer.Write("'>");
((DesignerTextWriter)writer).EnterZeroFontSizeTag();
writer.EnterLayout(Style);
writer.WriteBeginTag("input");
((DesignerTextWriter)writer).WriteStyleAttribute(Style, null);
if (!String.IsNullOrEmpty(Control.Text))
{
writer.Write(" value=\"");
writer.WriteText(Control.Text, true);
writer.Write("\" ");
}
if (fittingSize > 0)
{
writer.WriteAttribute("size", fittingSize.ToString(CultureInfo.InvariantCulture));
}
if (pwd)
{
writer.WriteAttribute("type", "password");
}
writer.Write("/>");
writer.ExitLayout(Style);
((DesignerTextWriter)writer).ExitZeroFontSizeTag();
writer.Write("</div>");
}
}
}
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