/// <summary>Attempts to load the icon if it has not already been loaded.</summary>
public void LoadIcon()
{
if (cacheState == IconCacheState.NotCached)
{
cacheState = IconCacheState.Caching;
IconCache.CacheFileTypeAsync(Extension, OnCacheIconAndTypeName);
}
}
/// <summary>The callback for asynchronously caching the file type icon and type name.</summary>
///
/// <param name="iconName">The resulting icon and type name.</param>
private void OnCacheIconAndTypeName(IIconAndName iconName)
{
if (iconName != null)
{
Icon = iconName.Icon;
TypeName = iconName.Name;
}
// Even if "I failed, I failed, I failed", we're not gonna reattempt this
cacheState = IconCacheState.Cached;
}
/// <summary>Constructs an <see cref="ExtensionItemViewModel"/>.</summary>
///
/// <param name="extensions">The collection containing this item.</param>
/// <param name="model">The model that this view model item represents.</param>
public ExtensionItemViewModel(ExtensionItemViewModelCollection extensions, ExtensionItem model)
{
this.extensions = extensions;
Model = model;
icon = IconCache.FileIcon;
if (IsEmptyExtension || Extension.Contains(" "))
{
// Extensions with spaces have no rights, so says Windows
typeName = "File";
cacheState = IconCacheState.Cached;
}
else
{
typeName = model.Extension.TrimStart('.').ToUpper() + " File";
if (CacheMode >= IconCacheMode.FileType)
{
LoadIcon();
}
}
HookEvents();
}