void OnItemCountChangeRequested(int newCount)
{
// Generating some random models
var newModels = new ChatMessageModel[newCount];
for (int i = 0; i < newCount; ++i)
{
newModels[i] = CreateNewModel(i, i != 1); // the second model will always have an image, for demo purposes
}
_Params.Data.Clear();
_Params.Data.AddRange(newModels);
ResetItems(_Params.Data.Count, true);
}
/// <summary>Utility getting rid of the need of manually writing assignments</summary>
public void UpdateFromModel(ChatMessageModel model, MyParams parameters)
{
timeText.text = model.TimestampAsDateTime.ToString("HH:mm");
string messageText = "[#" + ItemIndex + "] " + model.Text;
if (text.text != messageText)
{
text.text = messageText;
}
leftIcon.gameObject.SetActive(!model.IsMine);
rightIcon.gameObject.SetActive(model.IsMine);
if (model.ImageIndex < 0)
{
image.gameObject.SetActive(false);
}
else
{
image.gameObject.SetActive(true);
image.sprite = parameters.availableChatImages[model.ImageIndex];
}
if (model.IsMine)
{
messageContentPanelImage.rectTransform.pivot = new Vector2(1.4f, .5f);
messageContentPanelImage.color = new Color(.75f, 1f, 1f, colorAtInit.a);
_RootLayoutGroup.childAlignment = _MessageContentLayoutGroup.childAlignment = text.alignment = TextAnchor.MiddleRight;
_RootLayoutGroup.padding.right = paddingAtIconSide;
_RootLayoutGroup.padding.left = paddingAtOtherSide;
}
else
{
messageContentPanelImage.rectTransform.pivot = new Vector2(-.4f, .5f);
messageContentPanelImage.color = colorAtInit;
_RootLayoutGroup.childAlignment = _MessageContentLayoutGroup.childAlignment = text.alignment = TextAnchor.MiddleLeft;
_RootLayoutGroup.padding.right = paddingAtOtherSide;
_RootLayoutGroup.padding.left = paddingAtIconSide;
}
}
/// <inheritdoc/>
protected override void UpdateViewsHolder(ChatMessageViewsHolder newOrRecycled)
{
// Initialize the views from the associated model
ChatMessageModel model = _Params.Data[newOrRecycled.ItemIndex];
newOrRecycled.UpdateFromModel(model, _Params);
if (newOrRecycled.contentSizeFitter.enabled)
{
newOrRecycled.contentSizeFitter.enabled = false;
}
if (model.HasPendingVisualSizeChange)
{
// Height will be available before the next 'twin' pass, inside OnItemHeightChangedPreTwinPass() callback (see above)
newOrRecycled.MarkForRebuild(); // will enable the content size fitter
//newOrRecycled.contentSizeFitter.enabled = true;
ScheduleComputeVisibilityTwinPass(true);
}
if (!newOrRecycled.IsPopupAnimationActive && newOrRecycled.itemIndexInView == GetItemsCount() - 1) // only animating the last one
{
newOrRecycled.IsPopupAnimationActive = true;
}
}