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//------------------------------------------------------------------------------
// <copyright file="StyleReferenceConverter.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.Design.MobileControls.Converters
{
using System.Diagnostics;
using System.Collections;
using System.Globalization;
using System.ComponentModel;
using System.Web.UI.MobileControls;
using System.Web.UI.Design.MobileControls.Adapters;
using System.Web.UI.Design.MobileControls.Util;
/// <summary>
/// <para>
/// Can filter and retrieve several types of values from controls.
/// </para>
/// </summary>
[
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 StyleReferenceConverter: StringConverter
{
protected virtual Object [] GetStyles(Object instance)
{
StyleSheet styleSheet = null;
Style instanceStyle = null;
// Remember, ChoicePropertyFilter is a MobileControl, so we must
// check for ChoicePropertyFilter first...
if (instance is IDeviceSpecificChoiceDesigner)
{
instance = ((IDeviceSpecificChoiceDesigner)instance).UnderlyingObject;
}
if (instance is System.Web.UI.MobileControls.Style)
{
instanceStyle = (Style) instance;
if (instanceStyle.Control is StyleSheet)
{
styleSheet = (StyleSheet) instanceStyle.Control;
}
else if ((instanceStyle.Control is Form && instanceStyle is PagerStyle) ||
(instanceStyle.Control is ObjectList))
{
if (instanceStyle.Control.MobilePage != null)
{
styleSheet = instanceStyle.Control.MobilePage.StyleSheet;
}
else
{
return null;
}
}
else
{
Debug.Fail("Unsupported objects passed in");
}
}
else if (instance is System.Web.UI.MobileControls.MobileControl)
{
MobileControl control = (MobileControl)instance;
if (control.MobilePage == null)
{
return null;
}
styleSheet = control.MobilePage.StyleSheet;
}
else if (instance is Array)
{
Array array = (Array)instance;
Debug.Assert(array.Length > 0);
return GetStyles(array.GetValue(0));
}
else
{
Debug.Fail("Unsupported type passed in");
return null;
}
Debug.Assert(null != styleSheet);
ICollection styles = styleSheet.Styles;
ArrayList styleArray = new ArrayList();
foreach (String key in styles)
{
System.Web.UI.MobileControls.Style style = styleSheet[key];
if (style.Name != null && style.Name.Length > 0)
{
if (null == instanceStyle || 0 != String.Compare(instanceStyle.Name, style.Name, StringComparison.Ordinal))
{
styleArray.Add(style.Name);
}
}
}
if (styleSheet == StyleSheet.Default)
{
styleArray.Sort();
return styleArray.ToArray();
}
styles = StyleSheet.Default.Styles;
foreach (String key in styles)
{
System.Web.UI.MobileControls.Style style = StyleSheet.Default[key];
if (style.Name != null && style.Name.Length > 0)
{
if (null == instanceStyle || 0 != String.Compare(instanceStyle.Name, style.Name, StringComparison.Ordinal))
{
styleArray.Add(style.Name);
}
}
}
if (styleArray.Count <= 1)
{
return styleArray.ToArray();
}
styleArray.Sort();
String preID = ((String)styleArray[0]).ToLower(CultureInfo.InvariantCulture);
int i = 1;
while (i < styleArray.Count)
{
if (String.Equals((String)styleArray[i], preID, StringComparison.OrdinalIgnoreCase)) {
styleArray.RemoveAt(i);
}
else
{
preID = ((String)styleArray[i]).ToLower(CultureInfo.InvariantCulture);
i++;
}
}
return styleArray.ToArray();
}
/// <summary>
/// <para>
/// Returns a collection of standard values retrieved from the context specified
/// by the specified type descriptor.
/// </para>
/// </summary>
/// <param name='context'>
/// A type descriptor that specifies the location of the context to convert from.
/// </param>
/// <returns>
/// <para>
/// A StandardValuesCollection that represents the standard values collected from
/// the specified context.
/// </para>
/// </returns>
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
if (context == null || context.Instance == null)
{
return null;
}
Object [] objValues = GetStyles(context.Instance);
if (objValues != null)
{
return new StandardValuesCollection(objValues);
}
else
{
return null;
}
}
/// <summary>
/// <para>
/// Gets whether
/// or not the context specified contains exclusive standard values.
/// </para>
/// </summary>
/// <param name='context'>
/// A type descriptor that indicates the context to convert from.
/// </param>
/// <returns>
/// <para>
/// <see langword='true'/> if the specified context contains exclusive standard
/// values, otherwise <see langword='false'/>.
/// </para>
/// </returns>
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
{
return false;
}
/// <summary>
/// <para>
/// Gets whether or not the specified context contains supported standard
/// values.
/// </para>
/// </summary>
/// <param name='context'>
/// A type descriptor that indicates the context to convert from.
/// </param>
/// <returns>
/// <para>
/// <see langword='true'/> if the specified context conatins supported standard
/// values, otherwise <see langword='false'/>.
/// </para>
/// </returns>
public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{
return true;
}
}
}
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