/* ----------------------------------------------------------------- */
///
/// SetEncryption
///
/// <summary>
/// Sets the Encryption object.
/// </summary>
///
/// <param name="src">Facade object.</param>
/// <param name="value">Encryption object.</param>
///
/// <returns>
/// History item to execute undo and redo actions.
/// </returns>
///
/* ----------------------------------------------------------------- */
public static HistoryItem SetEncryption(this MainFacade src, Encryption value)
{
var prev = src.Bindable.Encryption;
return(HistoryItem.CreateInvoke(
() => src.Bindable.Encryption = value,
() => src.Bindable.Encryption = prev
));
}
/* ----------------------------------------------------------------- */
///
/// SetMetadata
///
/// <summary>
/// Sets the Metadata object.
/// </summary>
///
/// <param name="src">Facade object.</param>
/// <param name="value">Metadata object.</param>
///
/// <returns>
/// History item to execute undo and redo actions.
/// </returns>
///
/* ----------------------------------------------------------------- */
public static HistoryItem SetMetadata(this MainFacade src, Metadata value)
{
var prev = src.Bindable.Metadata;
return(HistoryItem.CreateInvoke(
() => src.Bindable.Metadata = value,
() => src.Bindable.Metadata = prev
));
}
/* ----------------------------------------------------------------- */
///
/// Rotate
///
/// <summary>
/// Rotates the selected images and regenerates them.
/// </summary>
///
/// <param name="src">Source collection.</param>
/// <param name="degree">Rotation angle in degree unit.</param>
///
/// <returns>
/// History item to execute undo and redo actions.
/// </returns>
///
/* ----------------------------------------------------------------- */
public static HistoryItem Rotate(this ImageCollection src, int degree)
{
var indices = GetCopiedIndices(src);
return(HistoryItem.CreateInvoke(
() => src.Rotate(indices, degree),
() => src.Rotate(indices, -degree)
));
}
/* ----------------------------------------------------------------- */
///
/// RemoveAt
///
/// <summary>
/// Removes the specified images.
/// </summary>
///
/// <param name="src">Source collection.</param>
/// <param name="indices">Collection to be removed.</param>
///
/// <returns>
/// History item to execute undo and redo actions.
/// </returns>
///
/* ----------------------------------------------------------------- */
public static HistoryItem RemoveAt(this ImageCollection src, IEnumerable <int> indices)
{
var items = GetPair(src, indices.OrderBy(i => i));
return(HistoryItem.CreateInvoke(
() => src.Remove(indices),
() => items.Each(e => src.Insert(e.Key, new[] { e.Value }))
));
}
/* ----------------------------------------------------------------- */
///
/// Move
///
/// <summary>
/// Moves the selected images at the specfied distance.
/// </summary>
///
/// <param name="src">Source collection.</param>
/// <param name="delta">Moving distance.</param>
///
/// <returns>
/// History item to execute undo and redo actions.
/// </returns>
///
/* ----------------------------------------------------------------- */
public static HistoryItem Move(this ImageCollection src, int delta)
{
var indices = GetCopiedIndices(src);
var cvt = indices.Select(i => i + delta).ToList();
return(HistoryItem.CreateInvoke(
() => src.Move(indices, delta),
() => src.Move(cvt, -delta)
));
}
/* ----------------------------------------------------------------- */
///
/// InsertAt
///
/// <summary>
/// Inserts the specified items behind the specified index.
/// </summary>
///
/// <param name="src">Source collection.</param>
/// <param name="index">Insertion index.</param>
/// <param name="items">Insertion items.</param>
///
/// <returns>
/// History item to execute undo and redo actions.
/// </returns>
///
/* ----------------------------------------------------------------- */
public static HistoryItem InsertAt(this ImageCollection src, int index, IEnumerable <Page> items)
{
var copy = items.ToList();
var indices = Enumerable.Range(index, copy.Count);
return(HistoryItem.CreateInvoke(
() => src.Insert(index, copy),
() => src.Remove(indices)
));
}