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love-lingerlove-linger
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code_review: PR #1408
Signed-off-by: leo <longshuang@msn.cn>
1 parent 0ea4021 commit ee4d8a6

4 files changed

Lines changed: 165 additions & 113 deletions

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‎src/ViewModels/Blame.cs‎

Lines changed: 110 additions & 69 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,6 @@
11
using System;
22
using System.Collections.Generic;
3+
using System.Threading;
34
using System.Threading.Tasks;
45

56
using Avalonia.Threading;
@@ -10,121 +11,161 @@ namespace SourceGit.ViewModels
1011
{
1112
public class Blame : ObservableObject
1213
{
13-
public string Title
14+
public string FilePath
1415
{
15-
get => _title;
16-
private set => SetProperty(ref _title, value);
16+
get;
1717
}
1818

19-
public bool IsBinary
19+
public Models.Commit Revision
2020
{
21-
get => _data != null && _data.IsBinary;
21+
get => _revision;
22+
private set => SetProperty(ref _revision, value);
2223
}
2324

24-
public bool CanMoveBack
25+
public Models.BlameData Data
2526
{
26-
get => _shaHistoryIndex > 0 && _shaHistory.Count > 1;
27+
get => _data;
28+
private set
29+
{
30+
if (SetProperty(ref _data, value))
31+
OnPropertyChanged(nameof(IsBinary));
32+
}
2733
}
28-
public bool CanMoveForward
34+
35+
public bool IsBinary
2936
{
30-
get => _shaHistoryIndex < _shaHistory.Count - 1;
37+
get => _data != null && _data.IsBinary;
3138
}
3239

33-
public Models.BlameData Data
40+
public bool CanBack
3441
{
35-
get => _data;
36-
private set => SetProperty(ref _data, value);
42+
get => _navigationActiveIndex > 0;
3743
}
3844

39-
public Blame(string repo, string file, string revision)
45+
public bool CanForward
4046
{
41-
_repo = repo;
42-
_file = file;
43-
44-
SetBlameData($"{revision.AsSpan(0, 10)}", true);
47+
get => _navigationActiveIndex < _navigationHistory.Count - 1;
4548
}
4649

47-
private void SetBlameData(string commitSHA, bool resetHistoryForward)
50+
public Blame(string repo, string file, Models.Commit commit)
4851
{
49-
Title = $"{_file} @ {commitSHA}";
52+
var sha = commit.SHA.Substring(0, 10);
5053

51-
Task.Run(() =>
52-
{
53-
var result = new Commands.Blame(_repo, _file, commitSHA).Result();
54-
Dispatcher.UIThread.Invoke(() =>
55-
{
56-
Data = result;
57-
OnPropertyChanged(nameof(IsBinary));
58-
});
59-
});
54+
FilePath = file;
55+
Revision = commit;
6056

61-
if (resetHistoryForward)
62-
{
63-
if (_shaHistoryIndex < _shaHistory.Count - 1)
64-
_shaHistory.RemoveRange(_shaHistoryIndex + 1, _shaHistory.Count - _shaHistoryIndex - 1);
57+
_repo = repo;
58+
_navigationHistory.Add(sha);
59+
_commits.Add(sha, commit);
60+
SetBlameData(sha);
61+
}
6562

66-
if (_shaHistory.Count == 0 || _shaHistory[_shaHistoryIndex] != commitSHA)
67-
{
68-
_shaHistory.Add(commitSHA);
69-
_shaHistoryIndex = _shaHistory.Count - 1;
70-
}
71-
}
63+
public string GetCommitMessage(string sha)
64+
{
65+
if (_commitMessages.TryGetValue(sha, out var msg))
66+
return msg;
7267

73-
OnPropertyChanged(nameof(CanMoveBack));
74-
OnPropertyChanged(nameof(CanMoveForward));
68+
msg = new Commands.QueryCommitFullMessage(_repo, sha).Result();
69+
_commitMessages[sha] = msg;
70+
return msg;
7571
}
7672

7773
public void Back()
7874
{
79-
--_shaHistoryIndex;
80-
if (_shaHistoryIndex < 0)
81-
_shaHistoryIndex = 0;
75+
if (_navigationActiveIndex <= 0)
76+
return;
8277

83-
NavigateToCommit(_shaHistory[_shaHistoryIndex], false);
78+
_navigationActiveIndex--;
79+
OnPropertyChanged(nameof(CanBack));
80+
OnPropertyChanged(nameof(CanForward));
81+
NavigateToCommit(_navigationHistory[_navigationActiveIndex]);
8482
}
8583

8684
public void Forward()
8785
{
88-
++_shaHistoryIndex;
89-
if (_shaHistoryIndex >= _shaHistory.Count)
90-
_shaHistoryIndex = _shaHistory.Count - 1;
86+
if (_navigationActiveIndex >= _navigationHistory.Count - 1)
87+
return;
9188

92-
NavigateToCommit(_shaHistory[_shaHistoryIndex], false);
89+
_navigationActiveIndex++;
90+
OnPropertyChanged(nameof(CanBack));
91+
OnPropertyChanged(nameof(CanForward));
92+
NavigateToCommit(_navigationHistory[_navigationActiveIndex]);
9393
}
9494

95-
public void NavigateToCommit(string commitSHA, bool resetHistoryForward)
95+
public void NavigateToCommit(string commitSHA)
9696
{
97-
var launcher = App.GetLauncher();
98-
if (launcher == null)
99-
return;
97+
if (!_navigationHistory[_navigationActiveIndex].Equals(commitSHA, StringComparison.Ordinal))
98+
{
99+
_navigationHistory.Add(commitSHA);
100+
_navigationActiveIndex = _navigationHistory.Count - 1;
101+
OnPropertyChanged(nameof(CanBack));
102+
OnPropertyChanged(nameof(CanForward));
103+
}
104+
105+
if (!Revision.SHA.StartsWith(commitSHA, StringComparison.Ordinal))
106+
SetBlameData(commitSHA);
100107

101-
foreach (var page in launcher.Pages)
108+
if (App.GetLauncher() is { Pages: { } pages })
102109
{
103-
if (page.Data is Repository repo && repo.FullPath.Equals(_repo))
110+
foreach (var page in pages)
104111
{
105-
repo.NavigateToCommit(commitSHA);
106-
SetBlameData(commitSHA, resetHistoryForward);
107-
break;
112+
if (page.Data is Repository repo && repo.FullPath.Equals(_repo))
113+
{
114+
repo.NavigateToCommit(commitSHA);
115+
break;
116+
}
108117
}
109-
}
118+
}
110119
}
111120

112-
public string GetCommitMessage(string sha)
121+
private void SetBlameData(string commitSHA)
113122
{
114-
if (_commitMessages.TryGetValue(sha, out var msg))
115-
return msg;
123+
if (_cancellationSource is { IsCancellationRequested: false })
124+
_cancellationSource.Cancel();
116125

117-
msg = new Commands.QueryCommitFullMessage(_repo, sha).Result();
118-
_commitMessages[sha] = msg;
119-
return msg;
126+
_cancellationSource = new CancellationTokenSource();
127+
var token = _cancellationSource.Token;
128+
129+
if (_commits.TryGetValue(commitSHA, out var c))
130+
{
131+
Revision = c;
132+
}
133+
else
134+
{
135+
Task.Run(() =>
136+
{
137+
var result = new Commands.QuerySingleCommit(_repo, commitSHA).Result();
138+
139+
Dispatcher.UIThread.Invoke(() =>
140+
{
141+
if (!token.IsCancellationRequested)
142+
{
143+
_commits.Add(commitSHA, result);
144+
Revision = result ?? new Models.Commit() { SHA = commitSHA };
145+
}
146+
});
147+
}, token);
148+
}
149+
150+
Task.Run(() =>
151+
{
152+
var result = new Commands.Blame(_repo, FilePath, commitSHA).Result();
153+
154+
Dispatcher.UIThread.Invoke(() =>
155+
{
156+
if (!token.IsCancellationRequested)
157+
Data = result;
158+
});
159+
}, token);
120160
}
121161

122162
private string _repo;
123-
private string _file;
124-
private string _title;
125-
private int _shaHistoryIndex = 0;
126-
private List<string> _shaHistory = [];
163+
private Models.Commit _revision;
164+
private CancellationTokenSource _cancellationSource = null;
165+
private int _navigationActiveIndex = 0;
166+
private List<string> _navigationHistory = [];
127167
private Models.BlameData _data = null;
128-
private Dictionary<string, string> _commitMessages = new Dictionary<string, string>();
168+
private Dictionary<string, Models.Commit> _commits = new();
169+
private Dictionary<string, string> _commitMessages = new();
129170
}
130171
}

‎src/ViewModels/CommitDetail.cs‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -313,7 +313,7 @@ public ContextMenu CreateChangeContextMenu(Models.Change change)
313313
blame.IsEnabled = change.Index != Models.ChangeState.Deleted;
314314
blame.Click += (_, ev) =>
315315
{
316-
App.ShowWindow(new Blame(_repo.FullPath, change.Path, _commit.SHA), false);
316+
App.ShowWindow(new Blame(_repo.FullPath, change.Path, _commit), false);
317317
ev.Handled = true;
318318
};
319319

@@ -481,7 +481,7 @@ public ContextMenu CreateRevisionFileContextMenu(Models.Object file)
481481
blame.IsEnabled = file.Type == Models.ObjectType.Blob;
482482
blame.Click += (_, ev) =>
483483
{
484-
App.ShowWindow(new Blame(_repo.FullPath, file.Path, _commit.SHA), false);
484+
App.ShowWindow(new Blame(_repo.FullPath, file.Path, _commit), false);
485485
ev.Handled = true;
486486
};
487487

‎src/Views/Blame.axaml‎

Lines changed: 39 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,7 @@
44
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
55
xmlns:vm="using:SourceGit.ViewModels"
66
xmlns:v="using:SourceGit.Views"
7+
xmlns:c="using:SourceGit.Converters"
78
mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
89
x:Class="SourceGit.Views.Blame"
910
x:DataType="vm:Blame"
@@ -43,22 +44,44 @@
4344

4445
<!-- File -->
4546
<Border Grid.Row="1" Padding="8,0" >
46-
<Grid>
47-
<TextBlock Text="{Binding Title}" VerticalAlignment="Center"/>
48-
<StackPanel HorizontalAlignment="Right" VerticalAlignment="Center" Orientation="Horizontal">
49-
<Button Classes="icon_button"
50-
IsEnabled="{Binding CanMoveBack}"
51-
Width="28"
52-
Click="HistoryBack">
53-
<Path Width="12" Height="12" Stretch="Uniform" Data="{StaticResource Icons.TriangleLeft}"/>
54-
</Button>
55-
<Button Classes="icon_button"
56-
IsEnabled="{Binding CanMoveForward}"
57-
Width="28"
58-
Click="HistoryForward">
59-
<Path Width="12" Height="12" Stretch="Uniform" Data="{StaticResource Icons.TriangleRight}"/>
60-
</Button>
61-
</StackPanel>
47+
<Grid ColumnDefinitions="Auto,*,Auto,Auto,400">
48+
<Path Grid.Column="0"
49+
Width="14" Height="14"
50+
Data="{StaticResource Icons.File}"/>
51+
52+
<TextBlock Grid.Column="1"
53+
Margin="4,0,0,0"
54+
VerticalAlignment="Center"
55+
Text="{Binding FilePath, Mode=OneWay}"/>
56+
57+
<Button Grid.Column="2"
58+
Classes="icon_button"
59+
IsEnabled="{Binding CanBack}"
60+
Width="28"
61+
Command="{Binding Back}">
62+
<Path Width="12" Height="12" Data="{StaticResource Icons.TriangleLeft}"/>
63+
</Button>
64+
65+
<Button Grid.Column="3"
66+
Classes="icon_button"
67+
IsEnabled="{Binding CanForward}"
68+
Width="28"
69+
Command="{Binding Forward}">
70+
<Path Width="12" Height="12" Data="{StaticResource Icons.TriangleRight}"/>
71+
</Button>
72+
73+
<Border Grid.Column="4" Background="#40000000" CornerRadius="3" Padding="4,0" Margin="0,2">
74+
<Grid ColumnDefinitions="Auto,*">
75+
<TextBlock Grid.Column="0"
76+
FontWeight="Bold"
77+
Margin="0,0,6,0"
78+
Text="{Binding Revision.SHA, Converter={x:Static c:StringConverters.ToShortSHA}, Mode=OneWay}"/>
79+
80+
<TextBlock Grid.Column="2"
81+
Text="{Binding Revision.Subject}"
82+
TextTrimming="CharacterEllipsis"/>
83+
</Grid>
84+
</Border>
6285
</Grid>
6386
</Border>
6487

‎src/Views/Blame.axaml.cs‎

Lines changed: 14 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -224,9 +224,7 @@ protected override void OnPointerPressed(PointerPressedEventArgs e)
224224
if (rect.Contains(pos))
225225
{
226226
if (DataContext is ViewModels.Blame blame)
227-
{
228-
blame.NavigateToCommit(info.CommitSHA, true);
229-
}
227+
blame.NavigateToCommit(info.CommitSHA);
230228

231229
e.Handled = true;
232230
break;
@@ -433,8 +431,6 @@ public partial class Blame : ChromelessWindow
433431
public Blame()
434432
{
435433
InitializeComponent();
436-
437-
AddHandler(PointerReleasedEvent, MouseUpHandler, handledEventsToo: true);
438434
}
439435

440436
protected override void OnClosed(EventArgs e)
@@ -443,30 +439,22 @@ protected override void OnClosed(EventArgs e)
443439
GC.Collect();
444440
}
445441

446-
private void HistoryBack(object _, RoutedEventArgs e)
442+
protected override void OnPointerReleased(PointerReleasedEventArgs e)
447443
{
448-
if (DataContext is ViewModels.Blame blame)
449-
{
450-
blame.Back();
451-
}
452-
}
453-
private void HistoryForward(object _, RoutedEventArgs e)
454-
{
455-
if (DataContext is ViewModels.Blame blame)
456-
{
457-
blame.Forward();
458-
}
459-
}
444+
base.OnPointerReleased(e);
460445

461-
private void MouseUpHandler(object sender, PointerReleasedEventArgs e)
462-
{
463-
if (e.InitialPressMouseButton == MouseButton.XButton1)
464-
{
465-
HistoryBack(null, null);
466-
}
467-
else if (e.InitialPressMouseButton == MouseButton.XButton2)
446+
if (!e.Handled && DataContext is ViewModels.Blame blame)
468447
{
469-
HistoryForward(null, null);
448+
if (e.InitialPressMouseButton == MouseButton.XButton1)
449+
{
450+
blame.Back();
451+
e.Handled = true;
452+
}
453+
else if (e.InitialPressMouseButton == MouseButton.XButton2)
454+
{
455+
blame.Forward();
456+
e.Handled = true;
457+
}
470458
}
471459
}
472460
}

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