//目前只支持删除可见区域内的数据
public void removeData(int begin, int end)
{
int dataCount = dataLocator.source.Count;
if (begin < 0 || begin >= dataCount)
{
Debug.Log("索引不合法");
return;
}
if (end < 0 || end >= dataCount)
{
Debug.Log("索引不合法");
return;
}
//删除数据
for (int i = end; i >= begin; i--)
{
dataLocator.source.RemoveAt(i);
}
//删除这个位置后面的数据
bool needClear = false;
int fillBeginIndex = 0;
for (int i = lineDataList.Count - 1; i >= 0; i--)
{
LineData ld = lineDataList[i];
fillBeginIndex = ld.beginIndex;
recycleLine(ld);
lineDataList.RemoveAt(i);
if (ld.inLine(begin))
{
break;
}
}
List <GridDataSource> source = dataLocator.GetDataSource();
fillData(fillBeginIndex, source);
setViewIndex(fillBeginIndex, true);
}
/// <summary>
/// 定位显示到某一行
/// </summary>
/// <param name="index"></param>
public void setViewIndex(int index, bool force)
{
//空列表
if (lineDataList.Count == 0)
{
return;
}
//不合法索引
if (index < 0 || index >= dataLocator.source.Count)
{
Debug.Log("索引不合法");
return;
}
int lastBegin = allBeginLine;
int lastEnd = allEndLine;
int findLine = INVALID_POS;
for (int i = 0; i < lineDataList.Count; i++)
{
LineData tempData = lineDataList[i];
if (tempData.inLine(index))
{
findLine = i;
virtualPos = tempData.childLineY;
ContentAnchorY = virtualPos;
break;
}
}
//如果定位的行不够填充整个视口，直接拉到最低
float tempContentHeight = ContentHeight;
if (tempContentHeight - virtualPos < ViewHeight)
{
//设置位置，向上查找
if (tempContentHeight >= ViewHeight)
{
virtualPos = tempContentHeight - ViewHeight;
}
else
{
virtualPos = 0;
}
ContentAnchorY = virtualPos;
//向上填充
fillToTop_end(findLine, ref allBeginLine);
//向下填充
fillToBottom_end(findLine, ref allEndLine);
}
else
{
allBeginLine = findLine;
//向下填充
fillToBottom_end(findLine, ref allEndLine);
}
if (lastBegin != allBeginLine || lastEnd != allEndLine)
{
if (lastBegin == INVALID_POS || lastEnd == INVALID_POS || force)
{
drawView();
}
else
{
drawDirtyView(lastBegin, lastEnd, allBeginLine, allEndLine);
}
}
}
