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ux: tree toggle button

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This commit is contained in:
leo 2024-07-12 11:01:02 +08:00
parent 67d0167278
commit 3c770e2525
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3 changed files with 104 additions and 70 deletions
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88
src/Views/BranchTree.axaml.cs
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@ -87,6 +87,23 @@ namespace SourceGit.Views
}
}
public class BranchTreeNodeToggleButton : ToggleButton
{
protected override Type StyleKeyOverride => typeof(ToggleButton);
protected override void OnPointerPressed(PointerPressedEventArgs e)
{
if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed &&
DataContext is ViewModels.BranchTreeNode { IsBranch: false } node)
{
var tree = this.FindAncestorOfType<BranchTree>();
tree.ToggleNodeIsExpanded(node);
}
e.Handled = true;
}
}
public partial class BranchTree : UserControl
{
public static readonly StyledProperty<List<ViewModels.BranchTreeNode>> NodesProperty =
@ -132,6 +149,42 @@ namespace SourceGit.Views
BranchesPresenter.SelectedItem = null;
}
public void ToggleNodeIsExpanded(ViewModels.BranchTreeNode node)
{
_disableSelectionChangingEvent = true;
node.IsExpanded = !node.IsExpanded;
var rows = Rows;
var depth = node.Depth;
var idx = rows.IndexOf(node);
if (idx == -1)
return;
if (node.IsExpanded)
{
var subtree = new List<ViewModels.BranchTreeNode>();
MakeRows(subtree, node.Children, depth + 1);
rows.InsertRange(idx + 1, subtree);
}
else
{
var removeCount = 0;
for (int i = idx + 1; i < rows.Count; i++)
{
var row = rows[i];
if (row.Depth <= depth)
break;
row.IsSelected = false;
removeCount++;
}
rows.RemoveRange(idx + 1, removeCount);
}
RaiseEvent(new RoutedEventArgs(RowsChangedEvent));
_disableSelectionChangingEvent = false;
}
protected override void OnSizeChanged(SizeChangedEventArgs e)
{
base.OnSizeChanged(e);
@ -165,6 +218,9 @@ namespace SourceGit.Views
private void OnNodesSelectionChanged(object _, SelectionChangedEventArgs e)
{
if (_disableSelectionChangingEvent)
return;
var repo = DataContext as ViewModels.Repository;
if (repo?.Settings == null)
return;
@ -273,35 +329,7 @@ namespace SourceGit.Views
}
else
{
node.IsExpanded = !node.IsExpanded;
var rows = Rows;
var depth = node.Depth;
var idx = rows.IndexOf(node);
if (idx == -1)
return;
if (node.IsExpanded)
{
var subtree = new List<ViewModels.BranchTreeNode>();
MakeRows(subtree, node.Children, depth + 1);
rows.InsertRange(idx + 1, subtree);
}
else
{
var removeCount = 0;
for (int i = idx + 1; i < rows.Count; i++)
{
var row = rows[i];
if (row.Depth <= depth)
break;
removeCount++;
}
rows.RemoveRange(idx + 1, removeCount);
}
RaiseEvent(new RoutedEventArgs(RowsChangedEvent));
ToggleNodeIsExpanded(node);
}
}
}
@ -342,6 +370,8 @@ namespace SourceGit.Views
foreach (var sub in node.Children)
CollectBranchesInNode(outs, sub);
}
private bool _disableSelectionChangingEvent = false;
}
}