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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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GPG key ID: B5690EEEBB952194
11 changed files with 361 additions and 47 deletions
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73
src/ViewModels/DiffContext.cs
View file

@ -51,6 +51,12 @@ namespace SourceGit.ViewModels
private set => SetProperty(ref _unifiedLines, value);
}
public string ChangeBlockIndicator
{
get => _changeBlockIndicator;
private set => SetProperty(ref _changeBlockIndicator, value);
}
public DiffContext(string repo, Models.DiffOption option, DiffContext previous = null)
{
_repo = repo;
@ -73,12 +79,68 @@ namespace SourceGit.ViewModels
LoadDiffContent();
}
public void PrevChange()
{
if (_content is Models.TextDiff textDiff)
{
if (textDiff.CurrentChangeBlockIdx > 0)
{
textDiff.CurrentChangeBlockIdx--;
}
else if (textDiff.ChangeBlocks.Count > 0)
{
// Force property value change and (re-)jump to first change block
textDiff.CurrentChangeBlockIdx = -1;
textDiff.CurrentChangeBlockIdx = 0;
}
}
RefreshChangeBlockIndicator();
}
public void NextChange()
{
if (_content is Models.TextDiff textDiff)
{
if (textDiff.CurrentChangeBlockIdx < textDiff.ChangeBlocks.Count - 1)
{
textDiff.CurrentChangeBlockIdx++;
}
else if (textDiff.ChangeBlocks.Count > 0)
{
// Force property value change and (re-)jump to last change block
textDiff.CurrentChangeBlockIdx = -1;
textDiff.CurrentChangeBlockIdx = textDiff.ChangeBlocks.Count - 1;
}
RefreshChangeBlockIndicator();
}
}
public void RefreshChangeBlockIndicator()
{
string curr = "-", tot = "-";
if (_content is Models.TextDiff textDiff)
{
if (textDiff.CurrentChangeBlockIdx >= 0)
curr = (textDiff.CurrentChangeBlockIdx + 1).ToString();
tot = (textDiff.ChangeBlocks.Count).ToString();
}
ChangeBlockIndicator = curr + "/" + tot;
}
public void ToggleFullTextDiff()
{
Preference.Instance.UseFullTextDiff = !Preference.Instance.UseFullTextDiff;
LoadDiffContent();
}
public void ToggleHighlightedDiffNavigation()
{
Preference.Instance.EnableChangeBlocks = !Preference.Instance.EnableChangeBlocks;
if (_content is Models.TextDiff textDiff)
textDiff.CurrentChangeBlockIdx = -1;
RefreshChangeBlockIndicator();
}
public void IncrUnified()
{
UnifiedLines = _unifiedLines + 1;
@ -91,6 +153,12 @@ namespace SourceGit.ViewModels
LoadDiffContent();
}
public void ToggleTwoSideDiff()
{
Preference.Instance.UseSideBySideDiff = !Preference.Instance.UseSideBySideDiff;
RefreshChangeBlockIndicator();
}
public void OpenExternalMergeTool()
{
var toolType = Preference.Instance.ExternalMergeToolType;
@ -217,7 +285,9 @@ namespace SourceGit.ViewModels
FileModeChange = latest.FileModeChange;
Content = rs;
IsTextDiff = rs is Models.TextDiff;
});
RefreshChangeBlockIndicator();
});
});
}
@ -281,6 +351,7 @@ namespace SourceGit.ViewModels
private string _title;
private string _fileModeChange = string.Empty;
private int _unifiedLines = 4;
private string _changeBlockIndicator = "-/-";
private bool _isTextDiff = false;
private bool _ignoreWhitespace = false;
private object _content = null;

7
src/ViewModels/Preference.cs
View file

@ -206,6 +206,12 @@ namespace SourceGit.ViewModels
set => SetProperty(ref _useFullTextDiff, value);
}
public bool EnableChangeBlocks
{
get => _enableChangeBlocks;
set => SetProperty(ref _enableChangeBlocks, value);
}
public Models.ChangeViewMode UnstagedChangeViewMode
{
get => _unstagedChangeViewMode;
@ -614,6 +620,7 @@ namespace SourceGit.ViewModels
private bool _enableDiffViewWordWrap = false;
private bool _showHiddenSymbolsInDiffView = false;
private bool _useFullTextDiff = false;
private bool _enableChangeBlocks = false;
private Models.ChangeViewMode _unstagedChangeViewMode = Models.ChangeViewMode.List;
private Models.ChangeViewMode _stagedChangeViewMode = Models.ChangeViewMode.List;

33
src/ViewModels/TwoSideTextDiff.cs
View file

@ -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);