public ReorderableListTouchHelperCallback(IReorderableListAdapter adapter, GridLayoutManager layoutManager)
{
_layoutManager = layoutManager;
_adapter = adapter;
_movementStartPosition = -1;
_movementEndPosition = -1;
}
public ReorderableListTouchHelperCallback(Context context, IReorderableListAdapter adapter, GridLayoutManager layoutManager)
{
_layoutManager = layoutManager;
_adapter = adapter;
_movementStartPosition = -1;
_movementEndPosition = -1;
_dragElevation = ViewUtils.DpToPx(context, DragElevationDp);
}
/// <summary>
/// Calculate height of list field for adapted collection.
/// </summary>
/// <param name="adapter">Reorderable list adaptor.</param>
/// <param name="flags">Optional flags to pass into list field.</param>
/// <returns>
/// Required list height in pixels.
/// </returns>
public static float CalculateListFieldHeight(IReorderableListAdapter adapter, ReorderableListFlags flags)
{
// We need to push/pop flags so that nested controls are properly calculated.
var restoreFlags = DefaultListControl.Flags;
try {
DefaultListControl.Flags = flags;
return(DefaultListControl.CalculateListHeight(adapter));
}
finally {
DefaultListControl.Flags = restoreFlags;
}
}
/// <summary>
/// Initializes a new instance of <see cref="ItemMovedEventArgs"/>.
/// </summary>
/// <param name="adapter">Reorderable list adaptor.</param>
/// <param name="buttonPosition">Position of the add menu button.</param>
public AddMenuClickedEventArgs(IReorderableListAdapter adapter, Rect buttonPosition)
{
this.Adapter = adapter;
this.ButtonPosition = buttonPosition;
}
/// <summary>
/// Initializes a new instance of <see cref="ItemMovedEventArgs"/>.
/// </summary>
/// <param name="adapter">Reorderable list adaptor.</param>
/// <param name="oldItemIndex">Old zero-based index of item.</param>
/// <param name="newItemIndex">New zero-based index of item.</param>
public ItemMovedEventArgs(IReorderableListAdapter adapter, int oldItemIndex, int newItemIndex)
{
this.Adapter = adapter;
this.OldItemIndex = oldItemIndex;
this.NewItemIndex = newItemIndex;
}
/// <summary>
/// Initializes a new instance of <see cref="ItemMovingEventArgs"/>.
/// </summary>
/// <param name="adapter">Reorderable list adaptor.</param>
/// <param name="itemIndex">Zero-based index of item.</param>
/// <param name="destinationItemIndex">Xero-based index of item destination.</param>
public ItemMovingEventArgs(IReorderableListAdapter adapter, int itemIndex, int destinationItemIndex)
{
this.Adapter = adapter;
this.ItemIndex = itemIndex;
this.DestinationItemIndex = destinationItemIndex;
}
/// <summary>
/// Initializes a new instance of <see cref="ItemRemovingEventArgs"/>.
/// </summary>
/// <param name="adapter">Reorderable list adaptor.</param>
/// <param name="itemIndex">Zero-based index of item.</param>
public ItemRemovingEventArgs(IReorderableListAdapter adapter, int itemIndex)
{
this.Adapter = adapter;
this.ItemIndex = itemIndex;
}
/// <inheritdoc cref="CalculateListFieldHeight(IReorderableListAdapter, ReorderableListFlags)"/>
public static float CalculateListFieldHeight(IReorderableListAdapter adapter)
{
return(CalculateListFieldHeight(adapter, 0));
}
/// <inheritdoc cref="DoListField(IReorderableListAdapter, ReorderableListControl.DrawEmpty, ReorderableListFlags)"/>
public static void ListField(IReorderableListAdapter adapter)
{
DoListField(adapter, null, 0);
}
/// <inheritdoc cref="DoListField(IReorderableListAdapter, ReorderableListControl.DrawEmpty, ReorderableListFlags)"/>
public static void ListField(IReorderableListAdapter adapter, ReorderableListFlags flags)
{
DoListField(adapter, null, flags);
}
/// <inheritdoc cref="DoListFieldAbsolute(Rect, IReorderableListAdapter, ReorderableListControl.DrawEmptyAbsolute, ReorderableListFlags)"/>
public static void ListFieldAbsolute(Rect position, IReorderableListAdapter adapter, ReorderableListControl.DrawEmptyAbsolute drawEmpty)
{
DoListFieldAbsolute(position, adapter, drawEmpty, 0);
}
/// <inheritdoc cref="DoListField(IReorderableListAdapter, ReorderableListControl.DrawEmpty, ReorderableListFlags)"/>
public static void ListField(IReorderableListAdapter adapter, ReorderableListControl.DrawEmpty drawEmpty)
{
DoListField(adapter, drawEmpty, 0);
}
/// <summary>
/// Draw list field control for adapted collection.
/// </summary>
/// <param name="position">Position of control.</param>
/// <param name="adapter">Reorderable list adaptor.</param>
/// <param name="drawEmpty">Callback to draw custom content for empty list (optional).</param>
/// <param name="flags">Optional flags to pass into list field.</param>
private static void DoListFieldAbsolute(Rect position, IReorderableListAdapter adapter, ReorderableListControl.DrawEmptyAbsolute drawEmpty, ReorderableListFlags flags = 0)
{
ReorderableListControl.DrawControlFromState(position, adapter, drawEmpty, flags);
}
/// <summary>
/// Draw list field control for adapted collection.
/// </summary>
/// <param name="adapter">Reorderable list adaptor.</param>
/// <param name="drawEmpty">Callback to draw custom content for empty list (optional).</param>
/// <param name="flags">Optional flags to pass into list field.</param>
private static void DoListField(IReorderableListAdapter adapter, ReorderableListControl.DrawEmpty drawEmpty, ReorderableListFlags flags = 0)
{
ReorderableListControl.DrawControlFromState(adapter, drawEmpty, flags);
}
/// <summary>
/// Initializes a new instance of <see cref="ItemInsertedEventArgs"/>.
/// </summary>
/// <param name="adapter">Reorderable list adaptor.</param>
/// <param name="itemIndex">Zero-based index of item.</param>
/// <param name="wasDuplicated">Indicates if inserted item was duplicated from another item.</param>
public ItemInsertedEventArgs(IReorderableListAdapter adapter, int itemIndex, bool wasDuplicated)
{
this.Adapter = adapter;
this.ItemIndex = itemIndex;
this.WasDuplicated = wasDuplicated;
}
/// <inheritdoc cref="DoListFieldAbsolute(Rect, IReorderableListAdapter, ReorderableListControl.DrawEmptyAbsolute, ReorderableListFlags)"/>
public static void ListFieldAbsolute(Rect position, IReorderableListAdapter adapter)
{
DoListFieldAbsolute(position, adapter, null, 0);
}
public ReorderableListTouchHelperCallback(IReorderableListAdapter adapter, GridLayoutManager layoutManager)
{
_isMoving = false;
_layoutManager = layoutManager;
_adapter = adapter;
}