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//------------------------------------------------------------------------------
// <copyright file="ImageDesigner.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.Design.MobileControls
{
using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Text;
using System.Web.UI;
using System.Web.UI.Design;
using System.Web.UI.MobileControls;
using System.Web.UI.MobileControls.Adapters;
using System.Web.UI.Design.MobileControls.Adapters;
using System.Web.UI.Design.MobileControls.Converters;
using System.Web.UI.Design.MobileControls.Util;
using Image = System.Web.UI.MobileControls.Image;
[
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 ImageDesigner : MobileControlDesigner
{
private Image _image;
private TemporaryBitmapFile _tempBmpFile;
private Uri _cachedWbmpUri;
private String _baseUrl = String.Empty;
private String BaseUrl
{
get
{
if (_baseUrl != null && _baseUrl.Length == 0)
{
IWebFormsDocumentService wfServices =
(IWebFormsDocumentService)GetService(typeof(IWebFormsDocumentService));
Debug.Assert(wfServices != null);
_baseUrl = wfServices.DocumentUrl;
}
return _baseUrl;
}
}
/// <summary>
/// <para>
/// Initializes the designer.
/// </para>
/// </summary>
/// <param name='component'>
/// The control element being designed.
/// </param>
/// <remarks>
/// <para>
/// This is called by the designer host to establish the component being
/// designed.
/// </para>
/// </remarks>
/// <seealso cref='System.ComponentModel.Design.IDesigner'/>
public override void Initialize(IComponent component)
{
Debug.Assert(component is System.Web.UI.MobileControls.Image,
"ImageDesigner.Initialize - Invalid Image Control");
_image = (System.Web.UI.MobileControls.Image) component;
base.Initialize(component);
}
/// <summary>
/// <para>
/// Disposes of the resources (other than memory) used by the
/// <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/>.
/// </para>
/// </summary>
/// <remarks>
/// <para>
/// Call <see langword='Dispose'/> when
/// you are finished using the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/>. The <see langword='Dispose'/> method leaves the <see cref='System.Web.UI.Design.WebControls.DataListDesigner'/> in an unusable state. After
/// calling <see langword='Dispose'/>, you must release all
/// references to the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/> so the memory it was occupying
/// can be reclaimed by garbage collection.
/// </para>
/// <note type="note">
/// Always call <see langword='Dispose'/> before you release your last reference to
/// the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/>. Otherwise, the resources
/// the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/> is using will not be freed
/// until garbage collection calls the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/> object's
/// destructor.
/// </note>
/// </remarks>
/// <seealso cref='System.ComponentModel.Design.IDesigner'/>
protected override void Dispose(bool disposing)
{
if (disposing && _tempBmpFile != null)
{
_tempBmpFile.Dispose();
_cachedWbmpUri = null;
_tempBmpFile = null;
}
base.Dispose(disposing);
}
private String GetConvertedImageURI(String imageUriString)
{
Uri baseUri = new Uri(BaseUrl);
Uri imageUri = new Uri(baseUri, imageUriString);
String extension = Path.GetExtension(imageUriString);
if(extension.Equals(".wbmp"))
{
if(_tempBmpFile != null)
{
if(_cachedWbmpUri != null
&& _cachedWbmpUri.Equals(imageUri))
{
return _tempBmpFile.Url;
}
else
{
_tempBmpFile.Dispose();
_tempBmpFile = null;
_cachedWbmpUri = null;
}
}
Byte[] buffer = FileReader.Read(imageUri);
if(buffer == null)
{
// Could not read image from URI, return original URI to
// Trident and let it render as a broken image.
goto ConversionError;
}
Bitmap bitmap = WbmpConverter.Convert(buffer);
if(bitmap == null)
{
// .wbmp appears to be corrupt, return original URI to
// Trident and let it render as a broken image.
goto ConversionError;
}
_tempBmpFile = new TemporaryBitmapFile(bitmap);
imageUriString = _tempBmpFile.Url;
_cachedWbmpUri = imageUri;
}
ConversionError:
return imageUriString;
}
/// <summary>
/// <para>
/// Gets the HTML to be used for the design time representation of the control runtime.
/// </para>
/// </summary>
/// <returns>
/// <para>
/// The design time HTML.
/// </para>
/// </returns>
protected override String GetDesignTimeNormalHtml()
{
String tempUrl = String.Empty;
bool replaceUrl = (_image.ImageUrl.Length > 0);
DesignerTextWriter writer = new DesignerTextWriter();
tempUrl = _image.ImageUrl;
_image.ImageUrl = GetConvertedImageURI(_image.ImageUrl);
_image.Adapter.Render(writer);
_image.ImageUrl = tempUrl;
return writer.ToString();
}
public override void OnComponentChanged(Object sender, ComponentChangedEventArgs e)
{
if ((e.Member != null) && e.Member.Name.Equals("NavigateUrl"))
{
_image.NavigateUrl = NavigateUrlConverter.GetUrl(
_image,
e.NewValue.ToString(),
e.OldValue.ToString()
);
e = new ComponentChangedEventArgs(e.Component, e.Member, e.OldValue, _image.NavigateUrl);
}
base.OnComponentChanged(sender, e);
}
}
}
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