private void UndoRedoInsertItem(HCCustomUndo aUndo, HCCustomUndoAction aAction, bool aIsUndo, ref int aCaretItemNo, ref int aCaretOffset, ref int aCaretDrawItemNo)
{
HCItemUndoAction vAction = aAction as HCItemUndoAction;
aCaretItemNo = vAction.ItemNo;
if (aIsUndo)
{
Items.RemoveAt(vAction.ItemNo);
FItemAddCount--;
if (aCaretItemNo > 0)
{
aCaretItemNo--;
if (Items[aCaretItemNo].StyleNo > HCStyle.Null)
{
aCaretOffset = Items[aCaretItemNo].Length;
}
else
{
aCaretOffset = HC.OffsetAfter;
}
}
else
{
aCaretOffset = 0;
}
}
else // 重做
{
HCCustomItem vItem = null;
LoadItemFromStreamAlone(vAction.ItemStream, ref vItem);
Items.Insert(vAction.ItemNo, vItem);
FItemAddCount++;
aCaretItemNo = vAction.ItemNo;
if (Items[aCaretItemNo].StyleNo > HCStyle.Null)
{
aCaretOffset = Items[aCaretItemNo].Length;
}
else
{
aCaretOffset = HC.OffsetAfter;
}
aCaretDrawItemNo = (aUndo as HCDataUndo).CaretDrawItemNo + 1;
}
}
private void CalcAffectRange(HCCustomUndo aUndo)
{
FFormatFirstItemNo = GetActionAffectFirst(aUndo.Actions.First, aUndo.IsUndo);
FFormatLastItemNo = GetActionAffectLast(aUndo.Actions.First, aUndo.IsUndo);
int vFirstNo = -1, vLastNo = -1, vIncCount = 0;
if (aUndo.Actions.First.Tag == HCAction.actInsertItem)
{
vIncCount++;
}
for (int i = 1; i < aUndo.Actions.Count; i++)
{
vFirstNo = GetActionAffectFirst(aUndo.Actions[i], aUndo.IsUndo);
vLastNo = GetActionAffectLast(aUndo.Actions[i], aUndo.IsUndo);
if (aUndo.Actions[i].Tag == HCAction.actInsertItem)
{
vIncCount++;
}
if (FFormatFirstItemNo > vFirstNo)
{
FFormatFirstItemNo = vFirstNo;
}
if (FFormatLastItemNo < vLastNo)
{
FFormatLastItemNo = vLastNo;
}
}
if (FFormatFirstItemNo < 0)
{
FFormatFirstItemNo = 0;
}
if (aUndo.IsUndo)
{
FFormatLastItemNo += vIncCount;
}
if (FFormatLastItemNo > Items.Count - 1)
{
FFormatLastItemNo = Items.Count - 1;
}
}
private void DoUndoRedoAction(HCCustomUndo aUndo, HCCustomUndoAction aAction, bool aIsUndo, ref int aCaretItemNo, ref int aCaretOffset, ref int aCaretDrawItemNo)
{
switch (aAction.Tag)
{
case HCAction.actBackDeleteText:
UndoRedoDeleteBackText(aAction, aIsUndo, ref aCaretItemNo, ref aCaretOffset);
break;
case HCAction.actDeleteText:
UndoRedoDeleteText(aAction, aIsUndo, ref aCaretItemNo, ref aCaretOffset);
break;
case HCAction.actInsertText:
UndoRedoInsertText(aAction, aIsUndo, ref aCaretItemNo, ref aCaretOffset);
break;
case HCAction.actSetItemText:
UndoRedoSetItemText(aAction, aIsUndo, ref aCaretItemNo, ref aCaretOffset);
break;
case HCAction.actDeleteItem:
UndoRedoDeleteItem(aAction, aIsUndo, ref aCaretItemNo, ref aCaretOffset);
break;
case HCAction.actInsertItem:
UndoRedoInsertItem(aUndo, aAction, aIsUndo, ref aCaretItemNo, ref aCaretOffset, ref aCaretDrawItemNo);
break;
case HCAction.actItemProperty:
UndoRedoItemProperty(aAction, aIsUndo, ref aCaretItemNo, ref aCaretOffset);
break;
case HCAction.actItemSelf:
UndoRedoItemSelf(aAction, aIsUndo, ref aCaretItemNo, ref aCaretOffset);
break;
case HCAction.actItemMirror:
UndoRedoItemMirror(aAction, aIsUndo, ref aCaretItemNo, ref aCaretOffset);
break;
}
}
public virtual void Undo(HCCustomUndo aUndo)
{
DoUndoRedo(aUndo);
}
private void DoUndoRedo(HCCustomUndo aUndo)
{
FForceClearExtra = false;
if (aUndo is HCUndoGroupEnd)
{
if (aUndo.IsUndo)
{
if (FUndoGroupCount == 0)
{
HCUndoList vUndoList = GetUndoList();
FFormatFirstItemNo = (vUndoList[vUndoList.CurGroupBeginIndex] as HCUndoGroupBegin).ItemNo;
FFormatLastItemNo = (vUndoList[vUndoList.CurGroupEndIndex] as HCUndoGroupEnd).ItemNo;
// 如果是序号0、1在一行，1删除后，又插入2个，其中第一个和序号0合并，第2个换行，
// 撤销时FFormatFirstItemNo为1从而FFormatFirstDrawItemNo为1，而此时1为行首，
// 撤销完后格式化会按在行首开始，导致原来的序号1撤销后换行。所以暴力回退1个
if (FFormatFirstItemNo > 0)
{
FFormatFirstItemNo--;
}
if (FFormatLastItemNo < Items.Count - 1)
{
FFormatLastItemNo++;
}
if (FFormatFirstItemNo != FFormatLastItemNo)
{
FFormatFirstItemNo = GetParaFirstItemNo(FFormatFirstItemNo);
FFormatFirstDrawItemNo = Items[FFormatFirstItemNo].FirstDItemNo;
FFormatLastItemNo = GetParaLastItemNo(FFormatLastItemNo);
}
else
{
GetFormatRange(FFormatFirstItemNo, 1, ref FFormatFirstDrawItemNo, ref FFormatLastItemNo);
}
FormatPrepare(FFormatFirstDrawItemNo, FFormatLastItemNo);
SelectInfo.Initialize();
this.InitializeField();
FItemAddCount = 0;
}
FUndoGroupCount++;
}
else // 组恢复结束
{
FUndoGroupCount--;
if (FUndoGroupCount == 0)
{
ReFormatData(FFormatFirstDrawItemNo, FFormatLastItemNo + FItemAddCount, FItemAddCount, FForceClearExtra);
SelectInfo.StartItemNo = (aUndo as HCUndoGroupEnd).ItemNo;
SelectInfo.StartItemOffset = (aUndo as HCUndoGroupEnd).Offset;
CaretDrawItemNo = (aUndo as HCUndoGroupEnd).CaretDrawItemNo;
Style.UpdateInfoReCaret();
Style.UpdateInfoRePaint();
}
}
return;
}
else
if (aUndo is HCUndoGroupBegin)
{
if (aUndo.IsUndo)
{
FUndoGroupCount--;
if (FUndoGroupCount == 0)
{
ReFormatData(FFormatFirstDrawItemNo, FFormatLastItemNo + FItemAddCount, FItemAddCount, FForceClearExtra);
SelectInfo.StartItemNo = (aUndo as HCUndoGroupBegin).ItemNo;
SelectInfo.StartItemOffset = (aUndo as HCUndoGroupBegin).Offset;
CaretDrawItemNo = (aUndo as HCUndoGroupBegin).CaretDrawItemNo;
Style.UpdateInfoReCaret();
Style.UpdateInfoRePaint();
}
}
else // 组恢复(无Action)
{
if (FUndoGroupCount == 0) // 组恢复开始
{
HCUndoList vUndoList = GetUndoList();
FFormatFirstItemNo = -1;
FFormatLastItemNo = -1;
int vItemNo = -1;
for (int i = vUndoList.CurGroupBeginIndex; i <= vUndoList.CurGroupEndIndex; i++)
{
if (vUndoList[i] is HCUndoGroupBegin)
{
if (FFormatFirstItemNo > ((vUndoList[i] as HCUndoGroupBegin).ItemNo))
{
FFormatFirstItemNo = (vUndoList[i] as HCUndoGroupBegin).ItemNo;
}
}
else
if (vUndoList[i] is HCUndoGroupEnd)
{
if (FFormatLastItemNo < ((vUndoList[i] as HCUndoGroupEnd).ItemNo))
{
FFormatLastItemNo = (vUndoList[i] as HCUndoGroupEnd).ItemNo;
}
}
else
{
vItemNo = GetParaFirstItemNo(GetActionAffectFirst(vUndoList[i].Actions.First, vUndoList[i].IsUndo));
if (FFormatFirstItemNo > vItemNo)
{
FFormatFirstItemNo = vItemNo;
}
vItemNo = GetParaLastItemNo(GetActionAffectLast(vUndoList[i].Actions.Last, vUndoList[i].IsUndo));
if (FFormatLastItemNo < vItemNo)
{
FFormatLastItemNo = vItemNo;
}
}
}
if (FFormatFirstItemNo < 0)
{
FFormatFirstItemNo = 0;
}
if (FFormatLastItemNo > Items.Count - 1)
{
FFormatLastItemNo = Items.Count - 1;
}
FFormatFirstDrawItemNo = GetFormatFirstDrawItem(Items[FFormatFirstItemNo].FirstDItemNo);
/*FFormatFirstItemNo = (aUndo as HCUndoGroupBegin).ItemNo;
* FFormatFirstDrawItemNo = GetFormatFirstDrawItem(Items[FFormatFirstItemNo].FirstDItemNo);
*
* HCUndoList vUndoList = GetUndoList();
* FFormatLastItemNo = (vUndoList[vUndoList.CurGroupEndIndex] as HCUndoGroupEnd).ItemNo;
* if (FFormatLastItemNo > Items.Count - 1) // 防止在最后插入Item的撤销后恢复访问越界
* FFormatLastItemNo--; */
FormatPrepare(FFormatFirstDrawItemNo, FFormatLastItemNo);
SelectInfo.Initialize();
this.InitializeField();
FItemAddCount = 0;
}
FUndoGroupCount++;
}
return;
}
if (aUndo.Actions.Count == 0)
{
return;
}
int vCaretDrawItemNo = -1, vCaretItemNo = -1, vCaretOffset = -1;;
if (FUndoGroupCount == 0)
{
SelectInfo.Initialize();
this.InitializeField();
FItemAddCount = 0;
vCaretDrawItemNo = (aUndo as HCDataUndo).CaretDrawItemNo;
if (aUndo.Actions[0].ItemNo > aUndo.Actions[aUndo.Actions.Count - 1].ItemNo)
{
FFormatFirstItemNo = GetParaFirstItemNo(GetActionAffectFirst(aUndo.Actions.Last, aUndo.IsUndo));
FFormatLastItemNo = GetParaLastItemNo(GetActionAffectLast(aUndo.Actions.First, aUndo.IsUndo));
}
else
{
FFormatFirstItemNo = GetParaFirstItemNo(GetActionAffectFirst(aUndo.Actions.First, aUndo.IsUndo));
FFormatLastItemNo = GetParaLastItemNo(GetActionAffectLast(aUndo.Actions.Last, aUndo.IsUndo));
}
FFormatFirstDrawItemNo = Items[FFormatFirstItemNo].FirstDItemNo;
FormatPrepare(FFormatFirstDrawItemNo, FFormatLastItemNo);
}
if (aUndo.IsUndo)
{
for (int i = aUndo.Actions.Count - 1; i >= 0; i--)
{
DoUndoRedoAction(aUndo, aUndo.Actions[i], true, ref vCaretItemNo, ref vCaretOffset, ref vCaretDrawItemNo);
}
}
else
{
for (int i = 0; i <= aUndo.Actions.Count - 1; i++)
{
DoUndoRedoAction(aUndo, aUndo.Actions[i], false, ref vCaretItemNo, ref vCaretOffset, ref vCaretDrawItemNo);
}
}
if (FUndoGroupCount == 0)
{
ReFormatData(FFormatFirstDrawItemNo, FFormatLastItemNo + FItemAddCount, FItemAddCount, FForceClearExtra);
int vCaretDIItem = GetDrawItemNoByOffset(vCaretItemNo, vCaretOffset); // 因为多个Action不一定每个会有有效的CaretDrawItem，所以需要重新计算一下
if ((vCaretDrawItemNo < 0) || (vCaretDrawItemNo > this.DrawItems.Count - 1))
{
vCaretDrawItemNo = vCaretDIItem;
}
else
if (vCaretDIItem != vCaretDrawItemNo)
{
if ((DrawItems[vCaretDrawItemNo].ItemNo == vCaretItemNo) && (DrawItems[vCaretDrawItemNo].CharOffs == vCaretOffset)) // 换行
{
}
else
{
vCaretDrawItemNo = vCaretDIItem; // 纠正
}
}
CaretDrawItemNo = vCaretDrawItemNo;
Style.UpdateInfoReCaret();
Style.UpdateInfoRePaint();
}
SelectInfo.StartItemNo = vCaretItemNo;
SelectInfo.StartItemOffset = vCaretOffset;
}
private void UndoRedoInsertItem(HCCustomUndo aUndo, HCCustomUndoAction aAction, bool aIsUndo, ref int aCaretItemNo, ref int aCaretOffset, ref int aCaretDrawItemNo)
{
HCItemUndoAction vAction = aAction as HCItemUndoAction;
aCaretItemNo = vAction.ItemNo;
if (aIsUndo)
{
if (aCaretItemNo < Items.Count - 1) // 不是最后一个
{
if (Items[aCaretItemNo].ParaFirst) // 段首删除了，光标为下一个开始
{
aCaretOffset = 0;
aCaretDrawItemNo = Items[aCaretItemNo + 1].FirstDItemNo;
}
else // 删除的不是段首
//if (Items[aCaretItemNo + 1].ParaFirst) // 下一个是段首，光标保持在同段最后
{
aCaretItemNo--;
if (Items[aCaretItemNo].StyleNo > HCStyle.Null)
{
aCaretOffset = Items[aCaretItemNo].Length;
}
else
{
aCaretOffset = HC.OffsetAfter;
}
aCaretDrawItemNo = (aUndo as HCDataUndo).CaretDrawItemNo;// - 1;
}
}
else
if (aCaretItemNo > 0) // 不是第一个
{
aCaretItemNo--;
if (Items[aCaretItemNo].StyleNo > HCStyle.Null)
{
aCaretOffset = Items[aCaretItemNo].Length;
}
else
{
aCaretOffset = HC.OffsetAfter;
}
aCaretDrawItemNo = (aUndo as HCDataUndo).CaretDrawItemNo - 1;
}
else
{
aCaretOffset = 0;
}
Items.RemoveAt(vAction.ItemNo);
FItemAddCount--;
}
else // 重做
{
HCCustomItem vItem = null;
LoadItemFromStreamAlone(vAction.ItemStream, ref vItem);
Items.Insert(vAction.ItemNo, vItem);
FItemAddCount++;
aCaretItemNo = vAction.ItemNo;
if (Items[aCaretItemNo].StyleNo > HCStyle.Null)
{
aCaretOffset = Items[aCaretItemNo].Length;
}
else
{
aCaretOffset = HC.OffsetAfter;
}
aCaretDrawItemNo = (aUndo as HCDataUndo).CaretDrawItemNo + 1;
}
}
public override void Redo(HCCustomUndo ARedo)
{
}
public override void Undo(HCCustomUndo AUndo)
{
}
private void DoUndoRedo(HCCustomUndo AUndo)
{
}
private void DoUndoRedo(HCCustomUndo aUndo)
{
if (aUndo is HCUndoGroupEnd)
{
if (aUndo.IsUndo)
{
if (FUndoGroupCount == 0)
{
HCUndoList vUndoList = GetUndoList();
FFormatFirstItemNo = (vUndoList[vUndoList.CurGroupBeginIndex] as HCUndoGroupBegin).ItemNo;
FFormatLastItemNo = (vUndoList[vUndoList.CurGroupEndIndex] as HCUndoGroupEnd).ItemNo;
if (FFormatLastItemNo < Items.Count - 1)
{
FFormatLastItemNo++;
}
if (FFormatFirstItemNo != FFormatLastItemNo)
{
FFormatFirstItemNo = GetParaFirstItemNo(FFormatFirstItemNo);
FFormatFirstDrawItemNo = Items[FFormatFirstItemNo].FirstDItemNo;
FFormatLastItemNo = GetParaLastItemNo(FFormatLastItemNo);
}
else
{
GetFormatRange(FFormatFirstItemNo, 1, ref FFormatFirstDrawItemNo, ref FFormatLastItemNo);
}
FormatPrepare(FFormatFirstDrawItemNo, FFormatLastItemNo);
SelectInfo.Initialize();
this.InitializeField();
FItemAddCount = 0;
}
FUndoGroupCount++;
}
else // 组恢复结束
{
FUndoGroupCount--;
if (FUndoGroupCount == 0)
{
ReFormatData(FFormatFirstDrawItemNo, FFormatLastItemNo + FItemAddCount, FItemAddCount);
SelectInfo.StartItemNo = (aUndo as HCUndoGroupEnd).ItemNo;
SelectInfo.StartItemOffset = (aUndo as HCUndoGroupEnd).Offset;
CaretDrawItemNo = (aUndo as HCUndoGroupEnd).CaretDrawItemNo;
Style.UpdateInfoReCaret();
Style.UpdateInfoRePaint();
}
}
return;
}
else
if (aUndo is HCUndoGroupBegin)
{
if (aUndo.IsUndo)
{
FUndoGroupCount--;
if (FUndoGroupCount == 0)
{
ReFormatData(FFormatFirstDrawItemNo, FFormatLastItemNo + FItemAddCount, FItemAddCount);
SelectInfo.StartItemNo = (aUndo as HCUndoGroupBegin).ItemNo;
SelectInfo.StartItemOffset = (aUndo as HCUndoGroupBegin).Offset;
CaretDrawItemNo = (aUndo as HCUndoGroupBegin).CaretDrawItemNo;
Style.UpdateInfoReCaret();
Style.UpdateInfoRePaint();
}
}
else // 组恢复(无Action)
{
if (FUndoGroupCount == 0)
{
FFormatFirstItemNo = (aUndo as HCUndoGroupBegin).ItemNo;
FFormatFirstDrawItemNo = GetFormatFirstDrawItem(Items[FFormatFirstItemNo].FirstDItemNo);
HCUndoList vUndoList = GetUndoList();
FFormatLastItemNo = (vUndoList[vUndoList.CurGroupEndIndex] as HCUndoGroupEnd).ItemNo;
if (FFormatLastItemNo > Items.Count - 1) // 防止在最后插入Item的撤销后恢复访问越界
{
FFormatLastItemNo--;
}
FormatPrepare(FFormatFirstDrawItemNo, FFormatLastItemNo);
SelectInfo.Initialize();
this.InitializeField();
FItemAddCount = 0;
}
FUndoGroupCount++;
}
return;
}
if (aUndo.Actions.Count == 0)
{
return;
}
int vCaretDrawItemNo = -1, vCaretItemNo = -1, vCaretOffset = -1;;
if (FUndoGroupCount == 0)
{
SelectInfo.Initialize();
this.InitializeField();
FItemAddCount = 0;
vCaretDrawItemNo = (aUndo as HCDataUndo).CaretDrawItemNo;
if (aUndo.Actions[0].ItemNo > aUndo.Actions[aUndo.Actions.Count - 1].ItemNo)
{
FFormatFirstItemNo = GetParaFirstItemNo(GetActionAffectFirst(aUndo.Actions.Last, aUndo.IsUndo));
FFormatLastItemNo = GetParaLastItemNo(GetActionAffectLast(aUndo.Actions.First, aUndo.IsUndo));
}
else
{
FFormatFirstItemNo = GetParaFirstItemNo(GetActionAffectFirst(aUndo.Actions.First, aUndo.IsUndo));
FFormatLastItemNo = GetParaLastItemNo(GetActionAffectLast(aUndo.Actions.Last, aUndo.IsUndo));
}
FFormatFirstDrawItemNo = Items[FFormatFirstItemNo].FirstDItemNo;
FormatPrepare(FFormatFirstDrawItemNo, FFormatLastItemNo);
}
if (aUndo.IsUndo)
{
for (int i = aUndo.Actions.Count - 1; i >= 0; i--)
{
DoUndoRedoAction(aUndo, aUndo.Actions[i], true, ref vCaretItemNo, ref vCaretOffset, ref vCaretDrawItemNo);
}
}
else
{
for (int i = 0; i <= aUndo.Actions.Count - 1; i++)
{
DoUndoRedoAction(aUndo, aUndo.Actions[i], false, ref vCaretItemNo, ref vCaretOffset, ref vCaretDrawItemNo);
}
}
if (FUndoGroupCount == 0)
{
ReFormatData(FFormatFirstDrawItemNo, FFormatLastItemNo + FItemAddCount, FItemAddCount);
if (vCaretDrawItemNo < 0)
{
vCaretDrawItemNo = GetDrawItemNoByOffset(vCaretItemNo, vCaretOffset);
}
else
if (vCaretDrawItemNo > this.DrawItems.Count - 1)
{
vCaretDrawItemNo = this.DrawItems.Count - 1;
}
CaretDrawItemNo = vCaretDrawItemNo;
Style.UpdateInfoReCaret();
Style.UpdateInfoRePaint();
}
SelectInfo.StartItemNo = vCaretItemNo;
SelectInfo.StartItemOffset = vCaretOffset;
}