/* ----------------------------------------------------------------- */
///
/// ImageEntry
///
/// <summary>
/// Initializes a new instance of the ImageItem class with the
/// specified arguments.
/// </summary>
///
/// <param name="getter">Delegation to get an image.</param>
/// <param name="selection">Shared object for selection.</param>
/// <param name="preferences">Image preferences.</param>
///
/* ----------------------------------------------------------------- */
public ImageItem(Func <ImageItem, ImageSource> getter,
ImageSelection selection, ImagePreference preferences)
{
_getter = getter;
_selection = selection;
_preferences = preferences;
_preferences.PropertyChanged += WhenPreferencesChanged;
}
/* ----------------------------------------------------------------- */
///
/// ImageEntry
///
/// <summary>
/// Initializes a new instance of the ImageItem class with the
/// specified arguments.
/// </summary>
///
/// <param name="image">Delegation to get an image.</param>
/// <param name="selection">Shared object for selection.</param>
/// <param name="preferences">Image preferences.</param>
///
/* ----------------------------------------------------------------- */
public ImageItem(Func <ImageItem, ImageSource> image,
ImageSelection selection, ImagePreferences preferences)
{
_image = image;
_selection = selection;
_preferences = preferences;
_preferences.PropertyChanged += WhenPreferencesChanged;
}
/* ----------------------------------------------------------------- */
///
/// ImageEntry
///
/// <summary>
/// Initializes a new instance of the ImageItem class with the
/// specified arguments.
/// </summary>
///
/// <param name="image">Delegation to get an image.</param>
/// <param name="selection">Shared object for selection.</param>
/// <param name="preferences">Image preferences.</param>
///
/* ----------------------------------------------------------------- */
public ImageItem(Func <ImageItem, ImageSource> image,
ImageSelection selection, ImagePreferences preferences)
{
_dispose = new OnceAction <bool>(Dispose);
_image = image;
_selection = selection;
_preferences = preferences;
_preferences.PropertyChanged += WhenPreferencesChanged;
}
/* ----------------------------------------------------------------- */
///
/// Create
///
/// <summary>
/// Creates a new instance of the SaveOption class.
/// </summary>
///
/* ----------------------------------------------------------------- */
private SaveOption Create(ImageSelection src, IO io, Invoker invoker)
{
var target = src.Count > 0 ? SaveTarget.Selected : SaveTarget.All;
return(new SaveOption(io, invoker)
{
Target = target
});
}
/* ----------------------------------------------------------------- */
///
/// ImageCollection
///
/// <summary>
/// Initializes a new instance of the ImageCollection class with
/// the specified arguments.
/// </summary>
///
/// <param name="getter">Function to get the renderer.</param>
/// <param name="context">Synchronization context.</param>
///
/* ----------------------------------------------------------------- */
public ImageCollection(Func <string, IDocumentRenderer> getter, SynchronizationContext context)
{
ImageSource create(ImageItem e) => getter(e.RawObject.File.FullName).Create(e);
void update(string s)
{
if (s == nameof(Preferences.VisibleLast))
{
Reschedule(null);
}
};
_dispose = new OnceAction <bool>(Dispose);
_inner = new ObservableCollection <ImageItem>();
_cache = new CacheCollection <ImageItem, ImageSource>(create);
_inner.CollectionChanged += (s, e) => OnCollectionChanged(e);
_cache.Created += (s, e) => e.Key.Refresh();
_cache.Failed += (s, e) => this.LogDebug($"[{e.Key.Index}] {e.Value.GetType().Name}");
Context = context;
Selection = new ImageSelection {
Context = context
};
Preferences = new ImagePreferences {
Context = context
};
Create = (i, r) =>
{
if (i < 0 || i >= Count)
{
return(null);
}
var src = _inner[i].RawObject;
return(getter(src.File.FullName).Create(src, r));
};
Convert = (e) => Preferences.FrameOnly ? null :
_cache.TryGetValue(e, out var dest) ? dest :
Preferences.Dummy;
Preferences.PropertyChanged += (s, e) => update(e.PropertyName);
}
/* ----------------------------------------------------------------- */
///
/// ExtractViewModel
///
/// <summary>
/// Initializes a new instance of the RemoveViewModel with the
/// specified arguments.
/// </summary>
///
/// <param name="callback">Callback method when applied.</param>
/// <param name="selection">Page selection.</param>
/// <param name="count">Number of pages.</param>
/// <param name="io">I/O handler.</param>
/// <param name="context">Synchronization context.</param>
///
/* ----------------------------------------------------------------- */
public ExtractViewModel(Action <SaveOption> callback,
ImageSelection selection,
int count,
IO io,
SynchronizationContext context
) : base(new ExtractFacade(selection, count, io, new ContextInvoker(context, false)),
new Aggregator(),
context
)
{
OK.Command = new DelegateCommand(
() => Track(() => {
callback(Facade.Value);
Send <CloseMessage>();
}),
() => Facade.Value.Destination.HasValue() &&
!io.Get(Facade.Value.Destination).IsDirectory
).Associate(Facade.Value, nameof(SaveOption.Destination));
}
/* ----------------------------------------------------------------- */
///
/// ImageCollection
///
/// <summary>
/// Initializes a new instance of the ImageCollection class with
/// the specified arguments.
/// </summary>
///
/// <param name="getter">Function to get the renderer.</param>
/// <param name="invoker">Invoker object.</param>
///
/* ----------------------------------------------------------------- */
public ImageCollection(Func <string, IDocumentRenderer> getter, Invoker invoker)
{
_getter = getter;
_inner = new ObservableCollection <ImageItem>();
_inner.CollectionChanged += (s, e) => OnCollectionChanged(e);
_cache = new CacheCollection <ImageItem, ImageSource>(e =>
getter(e.RawObject.File.FullName).Create(e).ToBitmapImage(true));
_cache.Created += (s, e) => e.Key.Refresh();
_cache.Failed += (s, e) => this.LogDebug($"[{e.Key.Index}] {e.Value.GetType().Name}");
Invoker = invoker;
Selection = new ImageSelection(invoker);
Preferences = new ImagePreference(invoker);
Preferences.PropertyChanged += (s, e) => {
if (e.PropertyName == nameof(Preferences.VisibleLast))
{
Reschedule(null);
}
};
}
/* ----------------------------------------------------------------- */
///
/// ExtractFacade
///
/// <summary>
/// Initializes a new instance of the ExtractFacade class with the
/// specified arguments.
/// </summary>
///
/// <param name="selection">Page selection.</param>
/// <param name="count">Number of pages.</param>
/// <param name="io">I/O handler.</param>
/// <param name="invoker">Invoker object.</param>
///
/* ----------------------------------------------------------------- */
public ExtractFacade(ImageSelection selection, int count, IO io, Invoker invoker)
{
Count = count;
Selection = selection;
Value = Create(selection, io, invoker);
}
