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Dynamic settings available in profile based on caps
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| using Eto.Forms; | ||
| using NAPS2.EtoForms.Layout; | ||
|
|
||
| namespace NAPS2.EtoForms.Widgets; | ||
|
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| public class DropDownWidget<T> where T : notnull | ||
| { | ||
| private readonly DropDown _dropDown = new(); | ||
| private T[] _items = []; | ||
|
|
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| private bool _hasUserPreferredItem; | ||
| private T? _userPreferredItem; | ||
| private bool _changingItems; | ||
|
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| public DropDownWidget() | ||
| { | ||
| EtoPlatform.Current.ConfigureDropDown(_dropDown); | ||
| _dropDown.SelectedIndexChanged += DropDown_SelectedIndexChanged; | ||
| if (typeof(IComparable<T>).IsAssignableFrom(typeof(T))) | ||
| { | ||
| GetClosestItem = GetClosestItemByComparing; | ||
| } | ||
| } | ||
|
|
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| public Func<T, string> Format { get; set; } = x => x?.ToString() ?? ""; | ||
|
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| public Func<T[], T, T>? GetClosestItem { get; set; } | ||
|
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| public bool Enabled | ||
| { | ||
| get => _dropDown.Enabled; | ||
| set => _dropDown.Enabled = value; | ||
| } | ||
|
|
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| public event EventHandler? SelectedItemChanged; | ||
|
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| public IEnumerable<T> Items | ||
| { | ||
| get => _items; | ||
| set | ||
| { | ||
| _items = value.ToArray(); | ||
| _changingItems = true; | ||
| var previousSelection = InternalSelectedItem; | ||
| _dropDown.Items.Clear(); | ||
| foreach (var item in _items) | ||
| { | ||
| _dropDown.Items.Add(new ListItem | ||
| { | ||
| Text = Format(item), | ||
| Tag = item | ||
| }); | ||
| } | ||
| InternalSelectedItem = GetPreferredSelection(previousSelection); | ||
| _changingItems = false; | ||
| if (!Equals(InternalSelectedItem, previousSelection)) | ||
| { | ||
| SelectedItemChanged?.Invoke(this, EventArgs.Empty); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private T? GetPreferredSelection(T? previousSelection) | ||
| { | ||
| if (_hasUserPreferredItem && _items.Contains(_userPreferredItem)) | ||
| { | ||
| return _userPreferredItem; | ||
| } | ||
| if (_items.Contains(previousSelection)) | ||
| { | ||
| return previousSelection; | ||
| } | ||
| var compareTo = _hasUserPreferredItem ? _userPreferredItem : previousSelection; | ||
| if (_items.Length > 0 && compareTo != null && GetClosestItem != null) | ||
| { | ||
| return GetClosestItem(_items, compareTo); | ||
| } | ||
| if (_items.Length > 0) | ||
| { | ||
| return _items[0]; | ||
| } | ||
| return default; | ||
| } | ||
|
|
||
| public T? SelectedItem | ||
| { | ||
| get => InternalSelectedItem; | ||
| set | ||
| { | ||
| _hasUserPreferredItem = true; | ||
| _userPreferredItem = value; | ||
| InternalSelectedItem = value; | ||
| } | ||
| } | ||
|
|
||
| private T? InternalSelectedItem | ||
| { | ||
| get | ||
| { | ||
| if (_dropDown.SelectedIndex == -1) return default; | ||
| return (T) ((ListItem) _dropDown.Items[_dropDown.SelectedIndex]).Tag; | ||
| } | ||
| set => _dropDown.SelectedIndex = Array.IndexOf(_items, value); | ||
| } | ||
|
|
||
| private void DropDown_SelectedIndexChanged(object? sender, EventArgs eventArgs) | ||
| { | ||
| if (!_changingItems) | ||
| { | ||
| _hasUserPreferredItem = true; | ||
| _userPreferredItem = InternalSelectedItem; | ||
| SelectedItemChanged?.Invoke(this, EventArgs.Empty); | ||
| } | ||
| } | ||
|
|
||
| private T GetClosestItemByComparing(T[] items, T x) | ||
| { | ||
| foreach (var y in items) | ||
| { | ||
| if (((IComparable<T>) x).CompareTo(y) <= 0) | ||
| { | ||
| return y; | ||
| } | ||
| } | ||
| return items[^1]; | ||
| } | ||
|
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||
| public static implicit operator LayoutElement(DropDownWidget<T> control) => control.AsControl(); | ||
|
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| public LayoutElement AsControl() => _dropDown; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| using NAPS2.Scan; | ||
|
|
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| namespace NAPS2.EtoForms.Widgets; | ||
|
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| public class EnumDropDownWidget<T> : DropDownWidget<T> where T : struct, Enum | ||
| { | ||
| public static IEnumerable<T> DefaultItems => (T[]) Enum.GetValues(typeof(T)); | ||
|
|
||
| public EnumDropDownWidget() | ||
| { | ||
| Format = x => x.Description(); | ||
| Items = DefaultItems; | ||
| } | ||
| } |
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