public void Render(
ITree tree,
IRemote usedRemote,
IBranchesKnowledge branchesKnowledge,
ITreeRenderingOptions options)
{
IRemoteWebUrlProvider remoteUrlProvider =
_remoteWebUrlProviderFactory.CreateUrlProvider(usedRemote.Url, options.ForceTreatAsGitHub);
WriteHeader();
IBranch[] branchesWithNodes = tree.Branches.Where(b => tree.EnumerateNodes(b).Any()).ToArray();
IBranch[] currentBranchesSorted = OrderByFirstCommitDate(branchesWithNodes, tree).ToArray();
IPairList <INode, INode> unwrittenMerges = new PairList <INode, INode>();
IPairList <INode, INode> writtenMerges = new PairList <INode, INode>();
// Main branches.
foreach (IBranch b in currentBranchesSorted)
{
_gvWriter.EmptyLine();
_gvWriter.Comment($"Branch {b.Label}.");
using (_gvWriter.StartSubGraph())
{
_gvWriter.SetNodeAttributes(AttrSet.Empty.Group(b.Label));
Color drawColor = branchesKnowledge.GetSuggestedDrawingColorFor(b);
bool isLesser = branchesKnowledge.IsAWorkItemBranch(b);
IAttrSet nodeStyle = _style.GetBranchNodeStyle(drawColor, isLesser);
IAttrSet edgeStyle = _style.GetBranchEdgeStyle(drawColor, isLesser);
_gvWriter.SetNodeAttributes(nodeStyle);
_gvWriter.SetEdgeAttributes(edgeStyle);
INode[] nodes = tree.EnumerateNodes(b).ToArray();
for (int i = 0; i < nodes.Length; i++)
{
INode currentNode = nodes[i];
WriteNode(currentNode, remoteUrlProvider);
if (i == 0)
{
// Starting node.
INode parent = currentNode.Parents.FirstOrDefault();
bool hasParent = parent != null;
if (!hasParent)
{
_gvWriter.Comment("Starting line.");
string id = string.Format($"{currentNode.Commit.Treeish}_start");
// Write starting empty node.
using (_gvWriter.StartSubGraph())
{
_gvWriter.RawAttributes(AttrSet.Empty.Rank(RankType.Source));
_gvWriter.Node(id, AttrSet.Empty.Width(0).Height(0).PenWidth(0));
}
_gvWriter.Edge(id, currentNode.Commit, _style.EdgeBranchStartVirtual);
_gvWriter.EmptyLine();
}
else
{
// It is some other branch, and we draw that edge.
WriteEdge(parent, currentNode, remoteUrlProvider);
writtenMerges.Add(parent, currentNode);
}
}
bool isLast = i == nodes.Length - 1;
INode nextNode = isLast ? null : nodes[i + 1];
if (!isLast)
{
// Edge to the next node.
WriteEdge(currentNode, nextNode, remoteUrlProvider);
}
else
{
WriteBranchPointer(b, tree, isLesser, remoteUrlProvider);
}
INode[] otherChildren = currentNode.Children.Except(nextNode).ToArray();
foreach (INode child in otherChildren)
{
unwrittenMerges.Add(currentNode, child);
}
}
}
}
IBranch[] branchesWithoutNodes = tree.Branches.Except(branchesWithNodes).ToArray();
foreach (IBranch b in branchesWithoutNodes)
{
bool isLesser = branchesKnowledge.IsAWorkItemBranch(b);
WriteBranchPointer(b, tree, isLesser, remoteUrlProvider);
}
// Tags.
ITag[] tags = tree.Tags.ToArray();
foreach (ITag t in tags)
{
_gvWriter.EmptyLine();
INode n = tree.GetNode(t.Tip);
string id = MakeNodeIdForPointerLabel(n, t);
using (_gvWriter.StartSubGraph())
{
_gvWriter.Comment($"Tag {t.Label}.");
_gvWriter.RawAttributes(AttrSet.Empty.Rank(RankType.Same));
string url = remoteUrlProvider?.GetTagLink(t);
_gvWriter.Node(id, _style.LabelTag.Label(t.Label).Url(url));
_gvWriter.Edge(n.Commit, id, _style.EdgeTagLabel);
}
}
INode[] allLeftOvers = tree.Nodes.Where(n => tree.GetContainingBranch(n) == null).ToArray();
if (allLeftOvers.Length > 0)
{
using (_gvWriter.StartSubGraph())
{
_gvWriter.EmptyLine();
_gvWriter.Comment("Leftover nodes.");
_gvWriter.SetNodeAttributes(_style.NodeOrphaned);
foreach (INode currentNode in allLeftOvers)
{
WriteNode(currentNode, remoteUrlProvider);
// Remember children.
foreach (INode child in currentNode.Children)
{
unwrittenMerges.Add(currentNode, child);
}
}
}
}
PairList <INode, INode> edgesToWrite = unwrittenMerges.Except(writtenMerges).ToPairList();
if (edgesToWrite.Count > 0)
{
using (_gvWriter.StartSubGraph())
{
_gvWriter.EmptyLine();
_gvWriter.Comment("Other edges.");
_gvWriter.SetEdgeAttributes(_style.EdgeOther);
foreach (Tuple <INode, INode> edge in edgesToWrite)
{
_gvWriter.Edge(edge.Item1.Commit, edge.Item2.Commit);
}
}
}
WriteFooter();
}
