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ChangeCollectionView.axaml.cs
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477 lines (402 loc) · 15.8 KB
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using System;
using System.Collections.Generic;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.Documents;
using Avalonia.Controls.Primitives;
using Avalonia.Input;
using Avalonia.Interactivity;
using Avalonia.Media;
using Avalonia.VisualTree;
namespace SourceGit.Views
{
public class ChangeTreeNodeToggleButton : ToggleButton
{
protected override Type StyleKeyOverride => typeof(ToggleButton);
protected override void OnPointerPressed(PointerPressedEventArgs e)
{
if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed &&
DataContext is ViewModels.ChangeTreeNode { IsFolder: true } node)
{
var tree = this.FindAncestorOfType<ChangeCollectionView>();
tree?.ToggleNodeIsExpanded(node);
}
e.Handled = true;
}
}
public class ChangeCollectionContainer : ListBox
{
protected override Type StyleKeyOverride => typeof(ListBox);
protected override void OnKeyDown(KeyEventArgs e)
{
if (SelectedItems is [ViewModels.ChangeTreeNode node])
{
if (((e.Key == Key.Left && node.IsExpanded) || (e.Key == Key.Right && !node.IsExpanded)) &&
e.KeyModifiers == KeyModifiers.None)
{
this.FindAncestorOfType<ChangeCollectionView>()?.ToggleNodeIsExpanded(node);
e.Handled = true;
}
}
if (!e.Handled && e.Key != Key.Space && e.Key != Key.Enter)
base.OnKeyDown(e);
}
}
public partial class ChangeCollectionView : UserControl
{
public static readonly StyledProperty<bool> IsUnstagedChangeProperty =
AvaloniaProperty.Register<ChangeCollectionView, bool>(nameof(IsUnstagedChange));
public bool IsUnstagedChange
{
get => GetValue(IsUnstagedChangeProperty);
set => SetValue(IsUnstagedChangeProperty, value);
}
public static readonly StyledProperty<Models.ChangeViewMode> ViewModeProperty =
AvaloniaProperty.Register<ChangeCollectionView, Models.ChangeViewMode>(nameof(ViewMode), Models.ChangeViewMode.Tree);
public Models.ChangeViewMode ViewMode
{
get => GetValue(ViewModeProperty);
set => SetValue(ViewModeProperty, value);
}
public static readonly StyledProperty<bool> EnableCompactFoldersProperty =
AvaloniaProperty.Register<ChangeCollectionView, bool>(nameof(EnableCompactFolders));
public bool EnableCompactFolders
{
get => GetValue(EnableCompactFoldersProperty);
set => SetValue(EnableCompactFoldersProperty, value);
}
public static readonly StyledProperty<List<Models.Change>> ChangesProperty =
AvaloniaProperty.Register<ChangeCollectionView, List<Models.Change>>(nameof(Changes));
public List<Models.Change> Changes
{
get => GetValue(ChangesProperty);
set => SetValue(ChangesProperty, value);
}
public static readonly StyledProperty<List<Models.Change>> SelectedChangesProperty =
AvaloniaProperty.Register<ChangeCollectionView, List<Models.Change>>(nameof(SelectedChanges));
public List<Models.Change> SelectedChanges
{
get => GetValue(SelectedChangesProperty);
set => SetValue(SelectedChangesProperty, value);
}
public static readonly RoutedEvent<RoutedEventArgs> ChangeDoubleTappedEvent =
RoutedEvent.Register<ChangeCollectionView, RoutedEventArgs>(nameof(ChangeDoubleTapped), RoutingStrategies.Tunnel | RoutingStrategies.Bubble);
public event EventHandler<RoutedEventArgs> ChangeDoubleTapped
{
add { AddHandler(ChangeDoubleTappedEvent, value); }
remove { RemoveHandler(ChangeDoubleTappedEvent, value); }
}
public ChangeCollectionView()
{
InitializeComponent();
}
public void ToggleNodeIsExpanded(ViewModels.ChangeTreeNode node)
{
if (Content is ViewModels.ChangeCollectionAsTree tree && node.IsFolder)
{
node.IsExpanded = !node.IsExpanded;
var depth = node.Depth;
var idx = tree.Rows.IndexOf(node);
if (idx == -1)
return;
if (node.IsExpanded)
{
var subrows = new List<ViewModels.ChangeTreeNode>();
MakeTreeRows(subrows, node.Children);
tree.Rows.InsertRange(idx + 1, subrows);
}
else
{
var removeCount = 0;
for (int i = idx + 1; i < tree.Rows.Count; i++)
{
var row = tree.Rows[i];
if (row.Depth <= depth)
break;
removeCount++;
}
tree.Rows.RemoveRange(idx + 1, removeCount);
}
}
}
public Models.Change GetNextChangeWithoutSelection()
{
var selected = SelectedChanges;
var changes = Changes;
if (selected == null || selected.Count == 0)
return changes.Count > 0 ? changes[0] : null;
if (selected.Count == changes.Count)
return null;
var set = new HashSet<string>();
foreach (var c in selected)
{
if (!c.IsConflicted)
set.Add(c.Path);
}
if (Content is ViewModels.ChangeCollectionAsTree tree)
{
var lastUnselected = -1;
for (int i = tree.Rows.Count - 1; i >= 0; i--)
{
var row = tree.Rows[i];
if (!row.IsFolder)
{
if (set.Contains(row.FullPath))
{
if (lastUnselected == -1)
continue;
break;
}
lastUnselected = i;
}
}
if (lastUnselected != -1)
return tree.Rows[lastUnselected].Change;
}
else
{
var lastUnselected = -1;
for (int i = changes.Count - 1; i >= 0; i--)
{
if (set.Contains(changes[i].Path))
{
if (lastUnselected == -1)
continue;
break;
}
lastUnselected = i;
}
if (lastUnselected != -1)
return changes[lastUnselected];
}
return null;
}
public void TakeFocus()
{
var container = this.FindDescendantOfType<ChangeCollectionContainer>();
if (container is { IsFocused: false })
container.Focus();
}
protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)
{
base.OnPropertyChanged(change);
if (change.Property == ViewModeProperty)
UpdateDataSource(true);
else if (change.Property == ChangesProperty)
UpdateDataSource(false);
else if (change.Property == SelectedChangesProperty)
UpdateSelection();
if (change.Property == EnableCompactFoldersProperty && ViewMode == Models.ChangeViewMode.Tree)
UpdateDataSource(true);
}
private void OnRowDataContextChanged(object sender, EventArgs e)
{
if (sender is not Control { DataContext: { } ctx } control)
return;
if (ctx is ViewModels.ChangeTreeNode node)
{
if (node.Change is { } c)
UpdateRowTips(control, c);
else
ToolTip.SetTip(control, node.FullPath);
}
else if (ctx is Models.Change change)
{
UpdateRowTips(control, change);
}
else
{
ToolTip.SetTip(control, null);
}
}
private void OnRowDoubleTapped(object sender, TappedEventArgs e)
{
if (sender is not Control { DataContext: { } ctx })
return;
if (ctx is ViewModels.ChangeTreeNode node)
{
if (node.IsFolder)
{
var posX = e.GetPosition(this).X;
if (posX < node.Depth * 16 + 16)
return;
ToggleNodeIsExpanded(node);
}
else
{
RaiseEvent(new RoutedEventArgs(ChangeDoubleTappedEvent));
}
}
else if (ctx is Models.Change)
{
RaiseEvent(new RoutedEventArgs(ChangeDoubleTappedEvent));
}
}
private void OnRowSelectionChanged(object sender, SelectionChangedEventArgs _)
{
if (_disableSelectionChangingEvent)
return;
_disableSelectionChangingEvent = true;
var selected = new List<Models.Change>();
if (sender is ListBox { SelectedItems: { } selectedItems })
{
foreach (var item in selectedItems)
{
if (item is Models.Change c)
selected.Add(c);
else if (item is ViewModels.ChangeTreeNode node)
CollectChangesInNode(selected, node);
}
}
var old = SelectedChanges ?? [];
if (old.Count != selected.Count)
{
SetCurrentValue(SelectedChangesProperty, selected);
}
else
{
bool allEquals = true;
foreach (var c in old)
{
if (!selected.Contains(c))
{
allEquals = false;
break;
}
}
if (!allEquals)
SetCurrentValue(SelectedChangesProperty, selected);
}
_disableSelectionChangingEvent = false;
}
private void MakeTreeRows(List<ViewModels.ChangeTreeNode> rows, List<ViewModels.ChangeTreeNode> nodes)
{
foreach (var node in nodes)
{
rows.Add(node);
if (!node.IsExpanded || !node.IsFolder)
continue;
MakeTreeRows(rows, node.Children);
}
}
private void UpdateDataSource(bool onlyViewModeChange)
{
_disableSelectionChangingEvent = !onlyViewModeChange;
var changes = Changes;
if (changes == null || changes.Count == 0)
{
Content = null;
_disableSelectionChangingEvent = false;
return;
}
var selected = SelectedChanges ?? [];
if (ViewMode == Models.ChangeViewMode.Tree)
{
HashSet<string> oldFolded = new HashSet<string>();
if (Content is ViewModels.ChangeCollectionAsTree oldTree)
{
foreach (var row in oldTree.Rows)
{
if (row.IsFolder && !row.IsExpanded)
oldFolded.Add(row.FullPath);
}
}
var tree = new ViewModels.ChangeCollectionAsTree();
tree.Tree = ViewModels.ChangeTreeNode.Build(changes, oldFolded, EnableCompactFolders);
var rows = new List<ViewModels.ChangeTreeNode>();
MakeTreeRows(rows, tree.Tree);
tree.Rows.AddRange(rows);
if (selected.Count > 0)
{
var sets = new HashSet<Models.Change>(selected);
var nodes = new List<ViewModels.ChangeTreeNode>();
foreach (var row in tree.Rows)
{
if (row.Change != null && sets.Contains(row.Change))
nodes.Add(row);
}
tree.SelectedRows.AddRange(nodes);
}
Content = tree;
}
else if (ViewMode == Models.ChangeViewMode.Grid)
{
var grid = new ViewModels.ChangeCollectionAsGrid();
grid.Changes.AddRange(changes);
if (selected.Count > 0)
grid.SelectedChanges.AddRange(selected);
Content = grid;
}
else
{
var list = new ViewModels.ChangeCollectionAsList();
list.Changes.AddRange(changes);
if (selected.Count > 0)
list.SelectedChanges.AddRange(selected);
Content = list;
}
_disableSelectionChangingEvent = false;
}
private void UpdateSelection()
{
if (_disableSelectionChangingEvent)
return;
_disableSelectionChangingEvent = true;
var selected = SelectedChanges ?? [];
if (Content is ViewModels.ChangeCollectionAsTree tree)
{
tree.SelectedRows.Clear();
if (selected.Count > 0)
{
var sets = new HashSet<Models.Change>(selected);
var nodes = new List<ViewModels.ChangeTreeNode>();
foreach (var row in tree.Rows)
{
if (row.Change != null && sets.Contains(row.Change))
nodes.Add(row);
}
tree.SelectedRows.AddRange(nodes);
}
}
else if (Content is ViewModels.ChangeCollectionAsGrid grid)
{
grid.SelectedChanges.Clear();
if (selected.Count > 0)
grid.SelectedChanges.AddRange(selected);
}
else if (Content is ViewModels.ChangeCollectionAsList list)
{
list.SelectedChanges.Clear();
if (selected.Count > 0)
list.SelectedChanges.AddRange(selected);
}
_disableSelectionChangingEvent = false;
}
private void CollectChangesInNode(List<Models.Change> outs, ViewModels.ChangeTreeNode node)
{
if (node.IsFolder)
{
foreach (var child in node.Children)
CollectChangesInNode(outs, child);
}
else if (!outs.Contains(node.Change))
{
outs.Add(node.Change);
}
}
private void UpdateRowTips(Control control, Models.Change change)
{
var tip = new TextBlock() { TextWrapping = TextWrapping.Wrap };
tip.Inlines!.Add(new Run(change.Path));
tip.Inlines!.Add(new Run(" • ") { Foreground = Brushes.Gray });
tip.Inlines!.Add(new Run(IsUnstagedChange ? change.WorkTreeDesc : change.IndexDesc) { Foreground = Brushes.Gray });
if (change.IsConflicted)
{
tip.Inlines!.Add(new Run(" • ") { Foreground = Brushes.Gray });
tip.Inlines!.Add(new Run(change.ConflictDesc) { Foreground = Brushes.Gray });
}
ToolTip.SetTip(control, tip);
}
private bool _disableSelectionChangingEvent = false;
}
}