public void ShowDiff(Commit commit)
{
if (ListBox.SelectedItems.Count < 2)
{
diffService.ShowDiffAsync(commit.RealCommitSha).RunInBackground();
}
else
{
CommitViewModel topCommit = ListBox.SelectedItems[0] as CommitViewModel;
int bottomIndex = ListBox.SelectedItems.Count - 1;
CommitViewModel bottomCommit = ListBox.SelectedItems[bottomIndex] as CommitViewModel;
if (topCommit != null && bottomCommit != null)
{
// Selection was made with ctrl-click. Lets take top and bottom commits as range
// even if there are more commits in the middle
CommitSha id1 = topCommit.Commit.RealCommitSha;
CommitSha id2 = bottomCommit.Commit.RealCommitSha;
diffService.ShowDiffRangeAsync(id1, id2).RunInBackground();
}
else if (topCommit != null)
{
// Selection was probably done with shift-click. Fore some reason SelectedItems
// only contains first selected item, other items are null, but there are one null
// item for each selected item plus one extra.
// Find the range by iterating first parents of the top commit (selected items count)
int topIndex = -1;
for (int i = 0; i < Commits.Count; i++)
{
if (Commits[i].Commit.RealCommitId == topCommit.Commit.RealCommitId)
{
topIndex = i;
break;
}
}
if (topIndex == -1 || topIndex + bottomIndex - 1 > Commits.Count - 1)
{
return;
}
CommitSha id1 = topCommit.Commit.RealCommitSha;
CommitSha id2 = Commits[topIndex + bottomIndex - 1].Commit.RealCommitSha;
diffService.ShowDiffRangeAsync(id1, id2).RunInBackground();;
}
}
}