//-------∽-★-∽------∽-★-∽--------∽-★-∽布局相关∽-★-∽--------∽-★-∽------∽-★-∽--------//
protected void RefreshAllItemLayout()
{
RectTransform listRect = GetComponent <RectTransform>();
float right = 0;
float bottom = 0;
for (int i = 0; i < m_itemList.Count; i++)
{
int index = OffsetItemIndex + i; //可能有偏移,不是从0开始
KListItem item = m_itemList[i];
RectTransform itemRect = item.GetComponent <RectTransform>();
Vector2 pivot = itemRect.pivot;
Vector2 position = CalculateItemPosition(index);
if (item.Visible)
{
//可见时才算入尺寸
right = position.x + m_itemSize.x + m_padding.right;
bottom = position.y + m_itemSize.y + m_padding.bottom;
}
position.x = position.x + m_itemSize.x * pivot.x;
position.y = position.y + m_itemSize.y * (1 - pivot.y);
itemRect.anchoredPosition = new Vector2(position.x, -position.y);
if (item.Index != index)
{
item.Index = index;
item.name = GenerateItemName(index);
}
}
listRect.sizeDelta = new Vector2(right, bottom);
}
protected void AddItemAt(Type itemType, object data, int index, bool doLayoutImmediately = true)
{
if (m_isExecutingCoroutine == true)
{
Log.Error("有尚未执行完毕的协程~~", this);
return;
}
//要改成循环利用
GameObject go = GameObjUtil.Instantiate(m_itemTemplate);
go.transform.SetParent(this.transform);
go.transform.localScale = Vector3.one;
go.transform.localPosition = Vector3.zero;
go.SetActive(true);
//BuildItem(go);
KListItem item = ComponentUtil.EnsureComponent(go, itemType) as KListItem;
item.Index = index;
item.name = GenerateItemName(index);
AddItemEventListener(item);
m_itemList.Insert(index, item);
item.SetData(data); //设置数据
if (doLayoutImmediately)
{
RefreshAllItemLayout();
}
}
public void Reorders(int[] orderArray, bool doLayoutImmediately = true)
{
int length = orderArray.Length;
int itemsCount = GetItemCount();
if (length > itemsCount)
{
Log.Error(GetType().ToString() + "无效的重排序列表");
return;
}
KListItem[] array = new KListItem[length];
for (int i = 0; i < length; ++i)
{
int oldOrder = orderArray[i];
if (oldOrder < 0 || oldOrder >= length)
{
Log.Error(GetType().ToString() + "无效的重排序下标");
return;
}
array[orderArray[i]] = m_itemList[i];
}
for (int i = 0; i < length; ++i)
{
m_itemList[i] = array[i];
}
if (doLayoutImmediately == true)
{
RefreshAllItemLayout();
}
}
protected virtual void OnItemClick(KListItem target, PointerEventData evtData)
{
int oldSelectedIndex = SelectedIndex;
KComponentEvent <int, int> .InvokeEvent(m_onItemClick, m_evtId_click, target.Index);
KEvtCenter4Lua.AddUIListEvent(m_evtId_click, target.Index);
if (target == m_selectedItem)
{
//已经是当前项
return;
}
bool isSelectedIndexChanged = (SelectedIndex != oldSelectedIndex);
if (isSelectedIndexChanged == true)
{
//若在_onItemClick事件中修改了KList的SelectedIndex，则不再调用后续事件处理
return;
}
if (m_selectedItem != null)
{
m_selectedItem.IsSelected = false;
m_selectedItem = null;
}
m_selectedItem = target;
m_selectedItem.IsSelected = true;
KComponentEvent <int, int> .InvokeEvent(m_onSelectedIndexChanged, m_evtId_change, SelectedIndex);
KEvtCenter4Lua.AddUIListEvent(m_evtId_change, SelectedIndex);
}
void AddItemEventListener(KListItem item)
{
item.onClick.AddListener(OnItemClick);
if (onDataChange != null)
{
item.onDataChange -= onDataChange;
item.onDataChange += onDataChange;
}
}
//后滚一页
void MoveOnePagePrev()
{
for (int i = 0; i < m_pageItemCount; i++)
{
KListItem item = m_itemList[m_itemList.Count - 1];
m_itemList.RemoveAt(m_itemList.Count - 1);
m_itemList.Insert(i, item);
int dataIndex = m_startDataIndex + i;
RefreshItem(item, dataIndex);
}
RefreshAllItemLayout();
}
//前滚一页
void MoveOnePageNext()
{
for (int i = 0; i < m_pageItemCount; i++)
{
KListItem item = m_itemList[0];
m_itemList.RemoveAt(0);
m_itemList.Add(item);
int dataIndex = m_startDataIndex + m_pageItemCount * 2 + i; //跨两页
RefreshItem(item, dataIndex);
}
RefreshAllItemLayout();
}
//刷新单项信息
void RefreshItem(KListItem item, int dataIndex)
{
if (dataIndex < m_dataList.Count)
{
item.Visible = true;
item.SetData(m_dataList[dataIndex]);
}
else
{
item.Visible = false;
}
}
void RemoveItem(int index)
{
if (m_isSupportSingle == false)
{
Log.Error(GetType().ToString() + " 不支持删除Item~~");
return;
}
if (index > m_itemList.Count - 1)
{
// 没有这个序号
return;
}
KListItem item = m_itemList[index];
m_itemList.RemoveAt(index);
RemoveItemEventListener(item);
Destroy(item.gameObject);
}
void RemoveItemEventListener(KListItem item)
{
item.onClick.RemoveListener(OnItemClick);
item.onDataChange = null;
}
