public Poem GetNextPoem(Poem poem, bool forward)
{
{
PoemCollection coll = null;
if (poem.ParentBlockPart != null)
{
coll = poem.ParentBlockPart.Poems;
}
else
{
coll = poem.ParentBlock.Poems;
}
int indexLine = coll.IndexOf(poem);
if (indexLine != -1)
{
int nextIndex = indexLine + (forward ? 1 : -1);
if (0 <= nextIndex && nextIndex < coll.Count)
{
return(coll[nextIndex]);
}
}
}
if (poem.ParentBlockPart != null)
{
SABlockPart nextBlockPart = GetNextBlockPart(poem.ParentBlockPart, forward);
if (nextBlockPart != null)
{
if (forward)
{
return(nextBlockPart.GetFirstPoem());
}
else
{
return(nextBlockPart.GetLastPoem());
}
}
}
{
SABlock nextBlock = GetNextBlock(poem.ParentBlock, forward);
if (forward)
{
return(nextBlock.GetFirstPoem());
}
else
{
return(nextBlock.GetLastPoem());
}
}
}
internal PoemLineIdentifier GetID()
{
PoemLineIdentifier result = new PoemLineIdentifier();
result.LineString = this.Line;
PoemPart curPoemPart = this.ParentPoemPart;
Poem curPoem = this.ParentPoem;
result.PoemName = curPoem.Name;
result.PoemFirstLine = curPoem.GetFirstLine().Line;
PoemLinesCollection collLines = null;
if (curPoemPart != null)
{
collLines = curPoemPart.Lines;
result.PoemPartName = curPoemPart.Name;
result.PoemPartFirstLine = curPoemPart.GetFirstLine().Line;
result.PoemPartIndex = curPoem.Parts.IndexOf(curPoemPart);
}
else
{
collLines = curPoem.Lines;
}
result.LineIndex = collLines.IndexOf(this);
SABlockPart curBlockPart = curPoem.ParentBlockPart;
SABlock curBlock = curPoem.ParentBlock;
result.BlockName = curBlock.Name;
result.BlockIndex = curBlock.ParentSA.Blocks.IndexOf(curBlock);
PoemCollection collPoems = null;
if (curBlockPart != null)
{
collPoems = curBlockPart.Poems;
result.BlockPartName = curBlockPart.Name;
result.BlockPartFirstLine = curBlockPart.GetFirstLine().Line;
result.BlockPartIndex = curBlock.Parts.IndexOf(curBlockPart);
}
else
{
collPoems = curBlock.Poems;
}
result.PoemIndex = collPoems.IndexOf(curPoem);
return(result);
}
internal PoemLine GetLineByID(PoemLineIdentifier lineId)
{
SABlock block = null;
if (!string.IsNullOrEmpty(lineId.BlockName))
{
SABlock[] searchBlocks = this.GetBlockByName(lineId.BlockName);
if (searchBlocks.Length == 1)
{
block = searchBlocks[0];
}
else if (searchBlocks.Length > 1)
{
foreach (SABlock item in searchBlocks)
{
if (this.Blocks.IndexOf(item) == lineId.BlockIndex)
{
block = item;
break;
}
}
}
}
if (block == null)
{
return(null);
}
PoemCollection poemColl = null;
if (!string.IsNullOrEmpty(lineId.BlockPartFirstLine) && lineId.BlockPartIndex.HasValue)
{
SABlockPart[] searchBlockParts = block.GetPartsByFirstLine(lineId.BlockPartFirstLine);
if (searchBlockParts.Length == 1)
{
poemColl = searchBlockParts[0].Poems;
}
else if (searchBlockParts.Length > 1)
{
foreach (SABlockPart item in searchBlockParts)
{
if (block.Parts.IndexOf(item) == lineId.BlockPartIndex)
{
poemColl = item.Poems;
break;
}
}
}
}
else
{
poemColl = block.Poems;
}
if (poemColl == null)
{
return(null);
}
Poem poem = null;
if (!string.IsNullOrEmpty(lineId.PoemFirstLine) && lineId.PoemIndex.HasValue)
{
Poem[] searchBlockParts = poemColl.GetPoemsByFirstLine(lineId.PoemFirstLine);
if (searchBlockParts.Length == 1)
{
poem = searchBlockParts[0];
}
else if (searchBlockParts.Length > 1)
{
foreach (Poem item in searchBlockParts)
{
if (poemColl.IndexOf(item) == lineId.PoemIndex)
{
poem = item;
break;
}
}
}
}
if (poem == null)
{
return(null);
}
PoemLinesCollection linesColl = null;
if (!string.IsNullOrEmpty(lineId.PoemPartFirstLine) && lineId.PoemPartIndex.HasValue)
{
PoemPart[] searchBlockParts = poem.GetPartsByFirstLine(lineId.PoemPartFirstLine);
if (searchBlockParts.Length == 1)
{
linesColl = searchBlockParts[0].Lines;
}
else if (searchBlockParts.Length > 1)
{
foreach (PoemPart item in searchBlockParts)
{
if (poem.Parts.IndexOf(item) == lineId.PoemPartIndex)
{
linesColl = item.Lines;
break;
}
}
}
}
else
{
linesColl = poem.Lines;
}
if (linesColl == null)
{
return(null);
}
PoemLine line = null;
if (!string.IsNullOrEmpty(lineId.LineString) && lineId.LineIndex.HasValue)
{
PoemLine[] searchBlockParts = linesColl.GetPoemsByFirstLine(lineId.LineString);
if (searchBlockParts.Length == 1)
{
line = searchBlockParts[0];
}
else if (searchBlockParts.Length > 1)
{
foreach (PoemLine item in searchBlockParts)
{
if (linesColl.IndexOf(item) == lineId.LineIndex)
{
line = item;
break;
}
}
}
}
if (line == null)
{
return(null);
}
return(line);
}