public ImageContainer GetExistingContainer(FileListEntry key)
{
lock (this.cache)
{
this.cache.TryGetValue(key, out ImageContainer container);
return(container);
}
}
private bool TryGetFile(int index, out FileListEntry file)
{
if (this.currentFileList == null || index < 0 || index >= this.currentFileList.Count)
{
file = null;
return(false);
}
file = this.currentFileList[index];
return(true);
}
public ImageContainer GetOrCreateContainer(FileListEntry key)
{
lock (this.cache)
{
if (!this.cache.TryGetValue(key, out ImageContainer container))
{
container = new ImageContainer(this, key);
this.cache.Add(key, container);
}
return(container);
}
}
private CacheWorkItem GetCacheWorkItemForCurrentDisplayIndex()
{
var items = new FileListEntry[fileLoadOrder.Length];
var list = this.currentFileList;
for (int i = 0; i < items.Length; ++i)
{
int offset = fileLoadOrder[i];
int index = this.currentDisplayIndex + offset;
int tmp_wrapped_around = index % list.Count;
if (tmp_wrapped_around < 0)
{
tmp_wrapped_around += list.Count;
}
items[i] = list[tmp_wrapped_around];
}
return(new CacheWorkItem(items[0], items));
}
public OverviewFileListEntry(FileListEntry fileListEntry)
{
Debug.Assert(fileListEntry != null);
this.fileListEntry = fileListEntry;
this.fileName = Path.GetFileName(this.fileListEntry.FullPath);
}
internal ImageContainer(ImageCache owner, FileListEntry key)
{
this.Key = key ?? throw new ArgumentNullException(nameof(key));
this.owner = owner ?? throw new ArgumentNullException(nameof(owner));
}
public ImageContainer GetOrCreateContainer(FileListEntry key)
{
return(this.imageCache.GetOrCreateContainer(key));
}
public CacheWorkItem(FileListEntry displayPath, FileListEntry[] surroundingPaths)
{
this.DisplayPath = displayPath;
this.SurroundingPaths = surroundingPaths;
}