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Add navigation and highlighting of change-blocks in Text Diff (#616, #717) (#703)

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* Corrected misspelled local variable nextHigh(t)light

* Implemented change-block navigation

* Modified behavior of the Prev/Next Change buttons in DiffView toolbar.
* Well-defined change-blocks are pre-calculated and can be navigated between.
* Current change-block is highlighted in the Diff panel(s).
* Prev/next at start/end of range (re-)scrolls to first/last change-block
(I.e when unset, or already at first/last change-block, or at the only one.)
* Current change-block is unset in RefreshContent().

* Added safeguards for edge cases

* Added indicator of current/total change-blocks in DiffView toolbar

* Added new Icon and String (en-US) for Highlighted Diff Navigation

* Added Preference and ToggleButton for diff navigation style
This commit is contained in:
Göran W 2024-12-08 10:50:33 +01:00 • committed by GitHub
parent c062f27081
commit 655d71b0bc
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11 changed files with 361 additions and 47 deletions
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33
src/ViewModels/TwoSideTextDiff.cs
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@ -45,10 +45,43 @@ namespace SourceGit.ViewModels
FillEmptyLines();
ProcessChangeBlocks();
if (previous != null && previous.File == File)
_syncScrollOffset = previous._syncScrollOffset;
}
public List<Models.TextDiffChangeBlock> ChangeBlocks { get; set; } = [];
public void ProcessChangeBlocks()
{
ChangeBlocks.Clear();
int lineIdx = 0, blockStartIdx = 0;
bool isNewBlock = true;
foreach (var line in Old) // NOTE: Same block size in both Old and New lines.
{
lineIdx++;
if (line.Type == Models.TextDiffLineType.Added ||
line.Type == Models.TextDiffLineType.Deleted ||
line.Type == Models.TextDiffLineType.None) // Empty
{
if (isNewBlock)
{
isNewBlock = false;
blockStartIdx = lineIdx;
}
}
else
{
if (!isNewBlock)
{
ChangeBlocks.Add(new Models.TextDiffChangeBlock(blockStartIdx, lineIdx - 1));
isNewBlock = true;
}
}
}
}
public void ConvertsToCombinedRange(Models.TextDiff combined, ref int startLine, ref int endLine, bool isOldSide)
{
endLine = Math.Min(endLine, combined.Lines.Count - 1);