// ========================================
// method
// ========================================
public override void Execute()
{
_ensureLineSegBreakCmd = null;
_splitBlockCmd = null;
_isExecuted = false;
int charIndexInBlock, blockOffset;
var block = _target.GetBlockAt(_charIndex, out charIndexInBlock, out blockOffset);
if (charIndexInBlock != 0)
{
_ensureLineSegBreakCmd = new EnsureLineSegmentBreakCommand(_target, _charIndex);
_ensureLineSegBreakCmd.Execute();
var charIndex = _ensureLineSegBreakCmd.IsExecuted? charIndexInBlock + 1: charIndexInBlock;
int lineIndex, charIndexInLine;
block.GetLineSegmentAtLocal(charIndex, out lineIndex, out charIndexInLine);
_splitBlockCmd = new SplitBlockCommand(block, lineIndex);
_splitBlockCmd.Execute();
_isExecuted = true;
}
}
// ========================================
// method
// ========================================
public override void Execute()
{
_commands.Clear();
if (_length == 1)
{
/// 削除する長さが1のとき
int inlineOffset, charIndexInInline;
var inline = _target.GetInlineAt(_index, out charIndexInInline, out inlineOffset);
if (inline.IsLineEndCharacter)
{
var line = inline.Parent as LineSegment;
if (inline is LineBreak)
{
/// line breakならlineをマージ
var nextLine = line.NextSibling as LineSegment;
var cmd = new MergeLineSegmentsCommand(line, nextLine);
cmd.Execute();
_commands.Add(cmd);
}
else if (inline is BlockBreak)
{
/// block breakならblockをマージ
var block = line.Parent as Block;
if (block.HasNextSibling)
{
var nextBlock = block.NextSibling as Block;
var lastLine = block.LineSegments.Last();
var nextFirstLine = nextBlock.LineSegments.First();
var mbcmd = new MergeBlocksCommand(block, nextBlock);
mbcmd.Execute();
_commands.Add(mbcmd);
var mlcmd = new MergeLineSegmentsCommand(lastLine, nextFirstLine);
mlcmd.Execute();
_commands.Add(mlcmd);
}
}
}
else
{
if (inline.Length == 1)
{
var line = inline.Parent as LineSegment;
var cmd = new RemoveInlineFromLineSegmentCommand(line, inline);
cmd.Execute();
_commands.Add(cmd);
}
else
{
var cmd = new RemoveStringFromInlineCommand(inline, charIndexInInline, 1);
cmd.Execute();
_commands.Add(cmd);
}
}
}
else if (_length > 1)
{
var range = new Range(_index, _length);
/// rangeの最初と最後でblockを分ける
var endInline = _target.GetInlineAt(range.End);
var endcmd = new EnsureBlockBreakCommand(_target, range.End + 1);
endcmd.Execute();
_commands.Add(endcmd);
range = endcmd.IsExecuted && !endInline.IsLineEndCharacter?
new Range(_index, _length + 1):
range;
var prevInline = range.Offset > 0? _target.GetInlineAt(range.Offset - 1): null;
var startcmd = new EnsureBlockBreakCommand(_target, range.Offset);
startcmd.Execute();
_commands.Add(startcmd);
range = startcmd.IsExecuted && !prevInline.IsLineEndCharacter?
new Range(range.Offset + 1, range.Length):
range;
/// 範囲内のblockをすべて削除
var removeds = new List <Block>();
foreach (var block in _target.Blocks)
{
var blockRange = _target.GetRange(block);
if (range.Contains(blockRange))
{
removeds.Add(block);
}
}
foreach (var block in removeds)
{
var cmd = new RemoveBlockFromStyledTextCommand(_target, block);
cmd.Execute();
_commands.Add(cmd);
}
/// rangeの最初でblockを分けた場合はmergeしておく
if (startcmd.IsExecuted && !prevInline.IsLineEndCharacter)
{
/// 直前のinlineがLineBreakではなかったならば
/// blockをつないでlineもつなげる
/// (BlockBreakをLineBreakにして，さらにLineBreakを削除)
var block = _target.GetBlockAt(_index);
var nextBlock = block.NextSibling as Block;
var lastLine = block.LineSegments.Last();
var nextFirstLine = nextBlock.LineSegments.First();
var mbcmd = new MergeBlocksCommand(block, nextBlock);
mbcmd.Execute();
_commands.Add(mbcmd);
var mlcmd = new MergeLineSegmentsCommand(lastLine, nextFirstLine);
mlcmd.Execute();
_commands.Add(mlcmd);
}
else if (startcmd.IsExecuted && prevInline.IsLineEndCharacter)
{
/// 直前のinlineがLineBreakだったならば
/// blockをつなぐ
/// (BlockBreakをLineBreakにするだけ)
var block = _target.GetBlockAt(_index - 1);
var nextBlock = block.NextSibling as Block;
var mbcmd = new MergeBlocksCommand(block, nextBlock);
mbcmd.Execute();
_commands.Add(mbcmd);
}
}
}
private int InsertFlows(IEnumerable <Flow> flows)
{
_commands = new List <ICommand>();
{
var cmd = new EnsureInlineBreakCommand(_target, _index);
cmd.Execute();
_commands.Add(cmd);
}
var firstBlock = _target.GetBlockAt(_index);
var bIndex = _target._Blocks.IndexOf(firstBlock);
var cIndex = _index;
foreach (var flow in flows)
{
if (flow is Block)
{
var block = flow as Block;
int charIndexInLine, lineSegOffset;
_target.GetLineSegmentAt(cIndex, out charIndexInLine, out lineSegOffset);
if (charIndexInLine == 0)
{
/// Line中でなければそのまま挿入
var cmd = new InsertBlockToStyledTextCommand(_target, block, bIndex);
cmd.Execute();
_commands.Add(cmd);
cIndex += flow.Length;
}
else
{
/// Line中ならInlineだけ挿入
foreach (var line in block.LineSegments)
{
foreach (var inline in line.Inlines)
{
if (inline.IsLineEndCharacter)
{
if (inline is BlockBreak)
{
var cmd = new InsertBlockBreakCommand(_target, cIndex);
cmd.Execute();
_commands.Add(cmd);
}
else if (inline is LineBreak)
{
var cmd = new InsertLineBreakCommand(_target, cIndex);
cmd.Execute();
_commands.Add(cmd);
}
}
else
{
var clone = inline.CloneDeeply() as Inline;
var cmd = new InsertInlineCommand(_target, cIndex, clone);
cmd.Execute();
_commands.Add(cmd);
}
cIndex += inline.Length;
}
}
}
++bIndex;
}
else if (flow is Inline)
{
var inline = flow as Inline;
if (inline.IsLineEndCharacter)
{
if (inline is BlockBreak)
{
var cmd = new InsertBlockBreakCommand(_target, cIndex);
cmd.Execute();
_commands.Add(cmd);
++bIndex;
}
else if (inline is LineBreak)
{
var cmd = new InsertLineBreakCommand(_target, cIndex);
cmd.Execute();
_commands.Add(cmd);
}
}
else
{
var clone = inline.CloneDeeply() as Inline;
var cmd = new InsertInlineCommand(_target, cIndex, clone);
cmd.Execute();
_commands.Add(cmd);
}
cIndex += flow.Length;
}
}
/// 最初のinlineがmergeできるならmerge
var firstInline = _target.GetInlineAt(_index);
if (_target.HasPrevInline(firstInline))
{
var prev = _target.GetPrevInline(firstInline);
if (prev.CanMerge(firstInline))
{
var cmd = new MergeInlineCommand(prev, firstInline);
cmd.Execute();
_commands.Add(cmd);
}
}
/// 最後のinlineがmergeできるならmerge
var lastInline = _target.GetInlineAt(cIndex - 1);
if (_target.HasNextInline(lastInline))
{
var next = _target.GetNextInline(lastInline);
if (lastInline.CanMerge(next))
{
var cmd = new MergeInlineCommand(lastInline, next);
cmd.Execute();
_commands.Add(cmd);
}
}
return(cIndex);
}
