public async Task <Boolean> MoveItem(IAudioListItemViewModel from, IAudioListItemViewModel to)
{
Int32 fromIdx = this.items.IndexOf(from);
Int32 toIdx = this.items.IndexOf(to);
Debug.Assert(fromIdx >= 0 && toIdx >= 0);
Int32 oldFromIdx = MoveListItem(fromIdx, toIdx);
Boolean canReorder = true;
var reorderProvider = this.audioService.AudioProvider as IAudioReorderProvider;
if (reorderProvider != null)
{
canReorder = await VKApi.Audio.ReorderAsync(from.Item.Audio.Id, reorderProvider.OwnerId, to.Item.Audio.Id);
}
if (!canReorder)
{
Int32 newFromIdx = this.items.IndexOf(from);
MoveListItem(newFromIdx, oldFromIdx);
}
return(canReorder);
}
private async Task AddItem(IAudioListItemViewModel item)
{
await this.uiDispatcher.BeginInvoke(new Action(() => this.items.Add(item)), DispatcherPriority.Input);
}
private async Task AddItem(IAudioListItemViewModel item)
{
await this.uiDispatcher.BeginInvoke(new Action(() => this.items.Add(item)), DispatcherPriority.Input);
}
public async Task<Boolean> MoveItem(IAudioListItemViewModel from, IAudioListItemViewModel to)
{
Int32 fromIdx = this.items.IndexOf(from);
Int32 toIdx = this.items.IndexOf(to);
Debug.Assert(fromIdx >= 0 && toIdx >= 0);
Int32 oldFromIdx = MoveListItem(fromIdx, toIdx);
Boolean canReorder = true;
var reorderProvider = this.audioService.AudioProvider as IAudioReorderProvider;
if (reorderProvider != null)
{
canReorder = await VKApi.Audio.ReorderAsync(from.Item.Audio.Id, reorderProvider.OwnerId, to.Item.Audio.Id);
}
if (!canReorder)
{
Int32 newFromIdx = this.items.IndexOf(from);
MoveListItem(newFromIdx, oldFromIdx);
}
return canReorder;
}
