wagesj45/advanced-calculator
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Add MVVM-pure clipboard copy for history: hover-only copy button with flyout on Desktop/Web and long-press/right-click context menu; View writes to clipboard via CopyRequested event

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Codex CLI 2025-08-27 23:44:29 -05:00
commit 2f803db1c8
3 changed files with 157 additions and 23 deletions
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29
src/AdvancedCalculator/ViewModels/MainViewModel.cs
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@ -11,6 +11,7 @@ namespace AdvancedCalculator.ViewModels;
public partial class MainViewModel : ViewModelBase
{
private readonly ICalculatorService _calculatorService;
public event EventHandler<string>? CopyRequested;
public MainViewModel()
: this(new CalculatorService())
@ -97,4 +98,32 @@ public partial class MainViewModel : ViewModelBase
InputText = string.Empty;
SelectedHistoryIndex = History.Count - 1;
}
// Copy helpers (MVVM-pure): build text in VM, View handles clipboard via CopyRequested
[RelayCommand]
private void CopyHistoryInput(HistoryItem? item)
{
if (item is null || string.IsNullOrWhiteSpace(item.Input)) return;
CopyRequested?.Invoke(this, item.Input);
}
[RelayCommand]
private void CopyHistoryOutput(HistoryItem? item)
{
if (item is null || string.IsNullOrWhiteSpace(item.Output)) return;
CopyRequested?.Invoke(this, item.Output);
}
[RelayCommand]
private void CopyHistoryBoth(HistoryItem? item)
{
if (item is null) return;
var input = item.Input?.Trim();
var output = item.Output?.Trim();
if (string.IsNullOrEmpty(input) && string.IsNullOrEmpty(output)) return;
if (string.IsNullOrEmpty(input)) { CopyRequested?.Invoke(this, output!); return; }
if (string.IsNullOrEmpty(output)) { CopyRequested?.Invoke(this, input!); return; }
CopyRequested?.Invoke(this, $"{input} = {output}");
}
}