/// <summary>
/// Adds a watcher for the specified asset.
/// </summary>
/// <param name="asset">The asset identifier of the asset for which to add a watcher.</param>
/// <param name="watcher">The watcher to add for the specified asset.</param>
/// <returns><see langword="true"/> if the watcher was added; otherwise, <see langword="false"/>.</returns>
public Boolean AddWatcher <TOutput>(AssetID asset, AssetWatcher <TOutput> watcher)
{
Contract.Require(watcher, nameof(watcher));
var primaryDisplay = ContentManager.Ultraviolet.GetPlatform().Displays.PrimaryDisplay;
var primaryDisplayDensityBucket = primaryDisplay?.DensityBucket ?? ScreenDensityBucket.Desktop;
return(AddWatcherInternal(AssetID.GetAssetPath(asset), primaryDisplayDensityBucket, watcher));
}
/// <summary>
/// Removes a watcher from the specified asset.
/// </summary>
/// <param name="asset">The asset path of the asset for which to remove a watcher.</param>
/// <param name="watcher">The watcher to remove from the specified asset.</param>
/// <returns><see langword="true"/> if the specified watcher was removed; otherwise, <see langword="false"/>.</returns>
public Boolean RemoveWatcher <TOutput>(String asset, AssetWatcher <TOutput> watcher)
{
Contract.Require(asset, nameof(asset));
Contract.Require(watcher, nameof(watcher));
var primaryDisplay = ContentManager.Ultraviolet.GetPlatform().Displays.PrimaryDisplay;
var primaryDisplayDensityBucket = primaryDisplay?.DensityBucket ?? ScreenDensityBucket.Desktop;
return(RemoveWatcherInternal(asset, primaryDisplayDensityBucket, watcher));
}
/// <summary>
/// Removes an asset watcher from the collection.
/// </summary>
/// <param name="watcher">The asset watcher to remove from the collection.</param>
/// <returns><see langword="true"/> if the asset watcher was removed; otherwise, <see langword="false"/>.</returns>
public bool Remove(AssetWatcher <T> watcher)
{
Contract.Require(watcher, nameof(watcher));
return(storage.Remove(watcher));
}
/// <summary>
/// Adds an asset watcher to the collection.
/// </summary>
/// <param name="watcher">The asset watcher to add to the collection.</param>
public void Add(AssetWatcher <T> watcher)
{
Contract.Require(watcher, nameof(watcher));
storage.Add(watcher);
}
/// <summary>
/// Adds a watcher for the specified asset.
/// </summary>
/// <param name="asset">The asset identifier of the asset for which to add a watcher.</param>
/// <param name="density">The density bucket corresponding to the version of the asset to watch.</param>
/// <param name="watcher">The watcher to add for the specified asset.</param>
/// <returns><see langword="true"/> if the watcher was added; otherwise, <see langword="false"/>.</returns>
public Boolean AddWatcher <TOutput>(AssetID asset, ScreenDensityBucket density, AssetWatcher <TOutput> watcher)
{
Contract.Require(watcher, nameof(watcher));
return(AddWatcherInternal(AssetID.GetAssetPath(asset), density, watcher));
}
/// <summary>
/// Adds a watcher for the specified asset.
/// </summary>
/// <param name="asset">The asset path of the asset for which to add a watcher.</param>
/// <param name="density">The density bucket corresponding to the version of the asset to watch.</param>
/// <param name="watcher">The watcher to add for the specified asset.</param>
/// <returns><see langword="true"/> if the watcher was added; otherwise, <see langword="false"/>.</returns>
public Boolean AddWatcher <TOutput>(String asset, ScreenDensityBucket density, AssetWatcher <TOutput> watcher)
{
Contract.Require(asset, nameof(asset));
Contract.Require(watcher, nameof(watcher));
return(AddWatcherInternal(asset, density, watcher));
}
/// <summary>
/// Removes a watcher from the specified asset.
/// </summary>
private Boolean RemoveWatcherInternal <TOutput>(String asset, ScreenDensityBucket density, AssetWatcher <TOutput> watcher)
{
lock (ContentManager.AssetCache.SyncObject)
{
if (assetWatchers == null)
{
return(false);
}
if (assetWatchers.TryGetValue(asset, out var list))
{
return(list.Remove(watcher));
}
return(false);
}
}
/// <summary>
/// Adds a watcher to the specified asset.
/// </summary>
private Boolean AddWatcherInternal <TOutput>(String asset, ScreenDensityBucket density, AssetWatcher <TOutput> watcher)
{
lock (ContentManager.AssetCache.SyncObject)
{
if (CreateFileSystemWatchers())
{
if (assetWatchers == null)
{
assetWatchers = new Dictionary <String, IAssetWatcherCollection>();
}
var assetPath = asset;
var assetResolvedPath = ContentManager.ResolveAssetFilePath(assetPath, density, true);
var assetFilePath = Path.GetFullPath(assetResolvedPath);
if (!assetWatchers.TryGetValue(assetFilePath, out var list))
{
list = new AssetWatcherCollection <TOutput>(ContentManager, assetPath, assetFilePath);
assetWatchers[assetFilePath] = list;
}
list.Add(watcher);
return(true);
}
return(false);
}
}
