/// <inheritdoc/>
public override void ChangeItemsCount(ItemCountChangeMode changeMode, int cellsCount, int indexIfAppendingOrRemoving = -1, bool contentPanelEndEdgeStationary = false, bool keepVelocity = false)
{
base.ChangeItemsCount(changeMode, cellsCount, indexIfAppendingOrRemoving, contentPanelEndEdgeStationary, keepVelocity);
// Showing a loading indicator when there are no items
SetWaitingForData(GetItemsCount() == 0);
}
/// <inheritdoc/>
protected override void CollectItemsSizes(ItemCountChangeMode changeMode, int count, int indexIfInsertingOrRemoving, ItemsDescriptor itemsDesc)
{
base.CollectItemsSizes(changeMode, count, indexIfInsertingOrRemoving, itemsDesc);
// CollectItemsSizes is called whenever the items count changes, but before the view is actually updated.
// The reason we need it here is that when inserting an item, it's initial size will be _Params.DefaultItemSize
// (which is taken from the prefab's actual size), but we want it to be NON_EXPANDED_SIZE (which is close to zero),
// so we can expand it after.
// It's not something very important, but it looks a bit odd without it
if (changeMode != ItemCountChangeMode.INSERT)
{
return;
}
if (count > 1)
{
// Not an animated insertion, since the count would've been 1 in that case
return;
}
if (_InsertDeleteAnimation == null)
{
// No animation running => the item will directly appear expanded (with _Params.DefaultItemSize)
return;
}
if (_InsertDeleteAnimation.itemIndex == indexIfInsertingOrRemoving)
{
itemsDesc.BeginChangingItemsSizes(indexIfInsertingOrRemoving);
itemsDesc[indexIfInsertingOrRemoving] = NON_EXPANDED_SIZE;
itemsDesc.EndChangingItemsSizes();
}
}
protected override void CollectItemsSizes(ItemCountChangeMode changeMode, int count, int indexIfInsertingOrRemoving, ItemsDescriptor itemsDesc)
{
base.CollectItemsSizes(changeMode, count, indexIfInsertingOrRemoving, itemsDesc);
if (changeMode != ItemCountChangeMode.RESET)
{
return;
}
if (count == 0)
{
return;
}
// Randomize sizes
int indexOfFirstItemThatWillChangeSize = 0;
int end = indexOfFirstItemThatWillChangeSize + count;
itemsDesc.BeginChangingItemsSizes(indexOfFirstItemThatWillChangeSize);
for (int i = indexOfFirstItemThatWillChangeSize; i < end; ++i)
{
itemsDesc[i] = UnityEngine.Random.Range(_Params.DefaultItemSize / 3, _Params.DefaultItemSize * 3);
}
itemsDesc.EndChangingItemsSizes();
}
public override void ChangeItemsCount(ItemCountChangeMode changeMode, int itemsCount, int indexIfInsertingOrRemoving = -1, bool contentPanelEndEdgeStationary = false, bool keepVelocity = false)
{
// No animation should be preserved between count changes
_ExpandCollapseAnimation = null;
base.ChangeItemsCount(changeMode, itemsCount, indexIfInsertingOrRemoving, contentPanelEndEdgeStationary, keepVelocity);
}
/// <inheritdoc/>
public override void ChangeItemsCount(ItemCountChangeMode changeMode, int itemsCount, int indexIfInsertingOrRemoving = -1, bool contentPanelEndEdgeStationary = false, bool keepVelocity = false)
{
base.ChangeItemsCount(changeMode, itemsCount, indexIfInsertingOrRemoving, contentPanelEndEdgeStationary, keepVelocity);
if (OnItemsUpdated != null)
{
OnItemsUpdated.Invoke();
}
}
public void ReinitializeSizes(ItemCountChangeMode changeMode, int count, int indexIfInsertingOrRemoving = -1, float?newDefaultSize = null)
{
if (newDefaultSize != null)
{
if (newDefaultSize != _DefaultSize)
{
if (changeMode != ItemCountChangeMode.RESET)
{
throw new UnityException("Cannot preserve old sizes if the newDefaultSize is different!");
}
_DefaultSize = newDefaultSize.Value;
}
}
if (changeMode == ItemCountChangeMode.RESET)
{
_Sizes.Clear();
_SizesCumulative.Clear();
_Keys.Clear();
itemsCount = count;
return;
}
if (indexIfInsertingOrRemoving < 0 || indexIfInsertingOrRemoving > itemsCount)
{
throw new ArgumentOutOfRangeException("indexIfInsertingOrRemoving", indexIfInsertingOrRemoving, "Should be positive and less than itemsCount=" + itemsCount);
}
int newCount;
if (changeMode == ItemCountChangeMode.INSERT)
{
ShiftSizesKeys(indexIfInsertingOrRemoving, count);
newCount = itemsCount + count;
}
else
{
if (count < 0)
{
throw new ArgumentOutOfRangeException("count", count, "Cannot be negative!");
}
if (indexIfInsertingOrRemoving + count > itemsCount)
{
throw new ArgumentOutOfRangeException("RemoveItems: index + count", indexIfInsertingOrRemoving + count, "Should be positive and less than- or or equal to itemsCount=" + itemsCount);
}
count = -count;
ShiftSizesKeys(indexIfInsertingOrRemoving, count);
newCount = itemsCount + count;
}
itemsCount = newCount;
}
/// <inheritdoc/>
public override void ChangeItemsCount(ItemCountChangeMode changeMode, int itemsCount, int indexIfInsertingOrRemoving = -1, bool contentPanelEndEdgeStationary = false, bool keepVelocity = false)
{
// No animation should be preserved between count changes.
// In case of insertion and removals, we don't touch it, since we expect those to be handled by the AnimatedInsert and AnimatedRemove, respectively
if (changeMode == ItemCountChangeMode.RESET)
{
_InsertDeleteAnimation = null;
}
base.ChangeItemsCount(changeMode, itemsCount, indexIfInsertingOrRemoving, contentPanelEndEdgeStationary, keepVelocity);
}
/// <inheritdoc/>
public override void ChangeItemsCount(ItemCountChangeMode changeMode, int cellsCount, int indexIfAppendingOrRemoving = -1, bool contentPanelEndEdgeStationary = false, bool keepVelocity = false)
{
// Assure nothing is selected before changing the count
// Update: not calling RefreshSelectionStateForVisibleCells(), since UpdateCellViewsHolder() will be called for all cells anyway
if (_SelectionMode)
{
SetSelectionMode(false);
}
UpdateSelectionActionButtons();
base.ChangeItemsCount(changeMode, cellsCount, indexIfAppendingOrRemoving, contentPanelEndEdgeStationary, keepVelocity);
}
/// <summary>
/// See <see cref="OSA{TParams, TItemViewsHolder}.ChangeItemsCount(ItemCountChangeMode, int, int, bool, bool)"/>
/// </summary>
/// <param name="changeMode"></param>
/// <param name="itemsCount"></param>
/// <param name="indexIfInsertingOrRemoving"></param>
/// <param name="contentPanelEndEdgeStationary"></param>
/// <param name="keepVelocity"></param>
public override void ChangeItemsCount(ItemCountChangeMode changeMode, int itemsCount, int indexIfInsertingOrRemoving = -1, bool contentPanelEndEdgeStationary = false, bool keepVelocity = false)
{
// On any adding/resetting items, invalidate current sorting types of current columns
// When items are removed, sorting remains valid
if (changeMode != ItemCountChangeMode.REMOVE)
{
InvalidateAnyColumnSorting();
}
InvalidateOptionsPanelState();
base.ChangeItemsCount(changeMode, itemsCount, indexIfInsertingOrRemoving, contentPanelEndEdgeStationary, keepVelocity);
}
/// <summary> Overridden in order to convert the cellsCount to groupsCount before passing it to the base's implementation</summary>
/// <seealso cref="SRIA{TParams, TItemViewsHolder}.ChangeItemsCount(ItemCountChangeMode, int, int, bool, bool)"/>
public override void ChangeItemsCount(
ItemCountChangeMode changeMode,
int cellsCount /*param name changed from itemsCount*/,
int indexIfAppendingOrRemoving = -1,
bool contentPanelEndEdgeStationary = false,
bool keepVelocity = false
)
{
if (changeMode != ItemCountChangeMode.RESET)
{
throw new InvalidOperationException("Only ItemCountChangeMode.RESET is supported with a GridAdapter for now");
}
_CellsCount = cellsCount;
// The number of groups is passed to the base's implementation
int groupsCount = _Params.GetNumberOfRequiredGroups(_CellsCount);
base.ChangeItemsCount(changeMode, groupsCount, indexIfAppendingOrRemoving, contentPanelEndEdgeStationary, keepVelocity);
}
public void ReinitializeSizes(
ItemCountChangeMode changeMode,
int count,
int indexIfInsertingOrRemoving,
double?newDefaultSize = null
)
{
if (newDefaultSize != null)
{
if (newDefaultSize != _DefaultSize)
{
if (changeMode != ItemCountChangeMode.RESET)
{
throw new OSAException("Cannot preserve old sizes if the newDefaultITemSize is different!");
}
_DefaultSize = newDefaultSize.Value;
//_AverageSize = _DefaultSize = newDefaultSize.Value;
}
AssureValidDefaultItemSizeOrThrow();
}
int newCount;
if (changeMode == ItemCountChangeMode.RESET)
{
newCount = count;
if (newCount < 0)
{
throw new ArgumentOutOfRangeException("OSA.ItemsDescriptor.ReinitializeSizes: Can't have negative count: " + newCount);
}
ClearAllKeysAndSizes();
}
else
{
if (indexIfInsertingOrRemoving < 0)
{
throw new ArgumentOutOfRangeException("indexIfInsertingOrRemoving", indexIfInsertingOrRemoving, "Should be positive or 0");
}
if (count < 0)
{
throw new ArgumentOutOfRangeException("count", count, "Cannot be negative!");
}
if (changeMode == ItemCountChangeMode.REMOVE)
{
if (indexIfInsertingOrRemoving + count > itemsCount)
{
throw new ArgumentOutOfRangeException("RemoveItems: index + count", indexIfInsertingOrRemoving + count, "Should be positive and less than- or or equal to itemsCount=" + itemsCount);
}
}
else
{
if (indexIfInsertingOrRemoving > itemsCount)
{
throw new ArgumentOutOfRangeException("InsertItems: indexIfInsertingOrRemoving", indexIfInsertingOrRemoving, "Should be positive and less than- or equal to itemsCount=" + itemsCount);
}
}
int change = (int)changeMode * count;
newCount = itemsCount + change;
if (newCount < 0)
{
throw new ArgumentOutOfRangeException("newCount", "OSA.ItemsDescriptor.ReinitializeSizes: Can't have negative count " + newCount);
}
if (newCount == 0)
{
ClearAllKeysAndSizes();
}
else
{
if (itemsCount > 0)
{
if (indexIfInsertingOrRemoving < itemsCount) // if it's the same, it means we're adding at the end, which doesn't require keys shifting
{
ShiftSizesKeysAfterInsertOrRemove(GetItemViewIndexFromRealIndexChecked(indexIfInsertingOrRemoving), change);
}
}
}
}
itemsCount = newCount;
}
public void ReinitializeRealIndexOfFirstItemInView(
int oldCount,
ItemCountChangeMode changeMode,
int count,
int indexIfInsertingOrRemoving,
int itemIndexOfFirstVHIfInsertingOrRemoving,
bool canLoop)
{
int newCount = itemsCount;
if (newCount == 0)
{
realIndexOfFirstItemInView = -1;
return;
}
if (changeMode == ItemCountChangeMode.RESET)
{
realIndexOfFirstItemInView = 0;
return;
}
if (canLoop)
{
throw new OSAException("At the moment, only ItemCountChangeMode.RESET is supported when looping");
}
realIndexOfFirstItemInView = 0;
//int oldRealIndexOfFirstItemInView = realIndexOfFirstItemInView;
//realIndexOfFirstItemInView = 0;
//if (canLoop && oldRealIndexOfFirstItemInView >= 0)
//{
// if (changeMode == ItemCountChangeMode.REMOVE)
// {
// int itemsAfterRealIndexPrev = oldCount - oldRealIndexOfFirstItemInView;
// if (itemsAfterRealIndexPrev < count)
// throw new OSAException("Looping and itemsAfterRealIndexPrev < removeCount, " + itemsAfterRealIndexPrev + "<" + count);
// }
// if (itemIndexOfFirstVHIfInsertingOrRemoving < 0)
// return;
// int change = (int)changeMode * count;
// realIndexOfFirstItemInView = oldRealIndexOfFirstItemInView;
// if (itemIndexOfFirstVHIfInsertingOrRemoving > indexIfInsertingOrRemoving
// || oldRealIndexOfFirstItemInView >= indexIfInsertingOrRemoving && itemIndexOfFirstVHIfInsertingOrRemoving != 0)
// {
// realIndexOfFirstItemInView += change;
// }
// //if (indexIfInsertingOrRemoving < oldRealIndexOfFirstItemInView)
// //{
// // realIndexOfFirstItemInView += change;
// //}
// //else if (indexIfInsertingOrRemoving == oldRealIndexOfFirstItemInView)
// //{
// // if (changeMode == ItemCountChangeMode.REMOVE)
// // {
// // int itemsAfterRealIndexPrev = oldCount - oldRealIndexOfFirstItemInView;
// // if (itemsAfterRealIndexPrev < count)
// // throw new OSAException("itemsAfterRealIndexPrev < count, " + itemsAfterRealIndexPrev + "<" + count);
// // realIndexOfFirstItemInView += change;
// // }
// // else
// // realIndexOfFirstItemInView += change;
// //}
// //else
// //{
// // // Bugfix: in case of looping, items are not shifted towards end anymore, only their ItemIndex is increased,
// // // but because no items are added before the viewport in this case, realIndexOfFirstItemInView should
// // // also increase to keep the ItemIndex distance from the first VH the same
// // // Similar case if removing
// // realIndexOfFirstItemInView += change;
// //}
//}
}
/// <summary>
/// This is called during changing the items count.
/// The base implementation reinitializes the items descriptor so that all items will have the same size, specified in <see cref="BaseParams.DefaultItemSize"/>
/// If overriding the method and the item default size should remain the same as <see cref="BaseParams.DefaultItemSize"/>,
/// don't forget to call the base implementation! Otherwise, call <see cref="ItemsDescriptor.ReinitializeSizes(ItemCountChangeMode, int, int, float?)"/> with the new default size as parameter.
/// Use <see cref="ItemsDescriptor.BeginChangingItemsSizes(int)"/> before and <see cref="ItemsDescriptor.EndChangingItemsSizes()"/> after
/// setting sizes. The indices of items for which you set custom sizes must be one after another (4,5,6,7.. etc). Gaps are not allowed.
/// Use "itemsDesc[itemIndexInView] = size" syntax for setting custom sizes. In this call, <see cref="AbstractViewsHolder.ItemIndex"/> will be the same as <see cref="BaseItemViewsHolder.itemIndexInView"/>, even if looping is enabled.
/// </summary>
/// <param name="itemsDesc">The container for all the info related to items' sizes</param>
protected virtual void CollectItemsSizes(ItemCountChangeMode changeMode, int count, int indexIfInsertingOrRemoving, ItemsDescriptor itemsDesc)
{
itemsDesc.ReinitializeSizes(changeMode, count, indexIfInsertingOrRemoving, _Params.DefaultItemSize);
}
/// <summary>Self-explanatory. See <see cref="ItemCountChangeMode"/> in order to understand how change modes differ from each other.</summary>
public virtual void ChangeItemsCount(ItemCountChangeMode changeMode, int itemsCount, int indexIfInsertingOrRemoving = -1, bool contentPanelEndEdgeStationary = false, bool keepVelocity = false)
{
ChangeItemsCountInternal(changeMode, itemsCount, indexIfInsertingOrRemoving, contentPanelEndEdgeStationary, keepVelocity);
}
/// <inheritdoc/>
public override void ChangeItemsCount(ItemCountChangeMode changeMode, int itemsCount, int indexIfInsertingOrRemoving = -1, bool contentPanelEndEdgeStationary = false, bool keepVelocity = false)
{
_IndexOfCurrentlyExpandedItem = -1; // at initialization, and each time the item count changes, this should be invalidated
base.ChangeItemsCount(changeMode, itemsCount, indexIfInsertingOrRemoving, contentPanelEndEdgeStationary, keepVelocity);
}
void ChangeItemsCountInternal(ItemCountChangeMode changeMode, int count, int indexIfInsertingOrRemoving, bool contentPanelEndEdgeStationary, bool keepVelocity)
{
CancelAnimationsIfAny();
var ignoreOnScroll_valueBefore = _SkipComputeVisibilityInUpdateOrOnScroll;
_SkipComputeVisibilityInUpdateOrOnScroll = true;
int prevCount = _ItemsDesc.itemsCount;
var velocity = _Collocation.scrollRect.velocity;
if (!keepVelocity)
{
_Collocation.scrollRect.StopMovement();
}
double sizeOfAllItemsBefore = _ItemsDesc.CumulatedSizeOfAllItems;
_ItemsDesc.realIndexOfFirstItemInView = count > 0 ? 0 : -1;
CollectItemsSizes(changeMode, count, indexIfInsertingOrRemoving, _ItemsDesc);
double sizeOfAllItemsAfter = _ItemsDesc.CumulatedSizeOfAllItems;
bool vrtContentPanelIsAtOrBeforeEnd = _InternalState.ContentPanelVirtualInsetFromViewportEnd >= 0d;
if (sizeOfAllItemsAfter <= sizeOfAllItemsBefore) // content has shrunk
{
if (_InternalState.ContentPanelVirtualInsetFromViewportStart >= 0d)
{
contentPanelEndEdgeStationary = false;
}
else if (vrtContentPanelIsAtOrBeforeEnd)
{
contentPanelEndEdgeStationary = true;
}
}
_InternalState.OnItemsCountChanged(prevCount, contentPanelEndEdgeStationary);
if (GetNumExcessObjects() > 0)
{
throw new UnityException("ChangeItemsCountInternal: GetNumExcessObjects() > 0 when calling ChangeItemsCountInternal(); this may be due ComputeVisibility not being finished executing yet");
}
_RecyclableItems.AddRange(_VisibleItems);
if (count == 0)
{
ClearCachedRecyclableItems();
}
_VisibleItems.Clear();
_VisibleItemsCount = 0;
double reportedScrollDelta;
if (contentPanelEndEdgeStationary)
{
reportedScrollDelta = .1f;
}
else
{
reportedScrollDelta = -.1f;
if (vrtContentPanelIsAtOrBeforeEnd)
{
reportedScrollDelta = .1f;
}
}
ComputeVisibilityForCurrentPosition(true, true, true, reportedScrollDelta);
if (!_CorrectedPositionInCurrentComputeVisibilityPass)
{
CorrectPositionsOfVisibleItems(true);
}
if (keepVelocity)
{
_Collocation.scrollRect.velocity = velocity;
}
if (ItemsRefreshed != null)
{
ItemsRefreshed(prevCount, count);
}
_SkipComputeVisibilityInUpdateOrOnScroll = ignoreOnScroll_valueBefore;
}
