| 1 | using System.Text.Json; |
| 2 | using Avalonia; |
| 3 | using Avalonia.Controls; |
| 4 | using Avalonia.Layout; |
| 5 | using Avalonia.VisualTree; |
| 6 | |
| 7 | namespace CascadeIDE.Services; |
| 8 | |
| 9 | /// <summary> |
| 10 | /// Применить к контролу параметры layout на лету (margin, grid row/column, canvas left/top, dock). |
| 11 | /// Вызывать из UI-потока. Для ide_set_control_layout. |
| 12 | /// </summary> |
| 13 | public static class UiControlLayoutApply |
| 14 | { |
| 15 | /// <summary>Применить layout из JSON. Возвращает "OK" или сообщение об ошибке.</summary> |
| 16 | /// <param name="root">Корень дерева (обычно окно).</param> |
| 17 | /// <param name="controlName">Имя контрола (из ide_get_ui_layout).</param> |
| 18 | /// <param name="layoutJson">JSON: margin, grid_row, grid_column, grid_row_span, grid_column_span, canvas_left, canvas_top, dock, visible (true/false — скрыть/показать).</param> |
| 19 | public static string Apply(Visual root, string controlName, string layoutJson) |
| 20 | { |
| 21 | if (string.IsNullOrWhiteSpace(controlName)) |
| 22 | return "Missing control name."; |
| 23 | |
| 24 | var control = root is Window mw |
| 25 | ? UiControlAppearance.FindControlByNameAcrossAllWindows(mw, controlName.Trim()) |
| 26 | : UiControlAppearance.FindControlByName(root, controlName.Trim()); |
| 27 | if (control is null) |
| 28 | return $"Control not found: {controlName}."; |
| 29 | |
| 30 | try |
| 31 | { |
| 32 | using var doc = JsonDocument.Parse(layoutJson); |
| 33 | var rootEl = doc.RootElement; |
| 34 | |
| 35 | if (rootEl.TryGetProperty("margin", out var marginEl)) |
| 36 | { |
| 37 | var t = ParseThickness(marginEl); |
| 38 | if (t is { } thickness) |
| 39 | control.Margin = thickness; |
| 40 | } |
| 41 | |
| 42 | if (rootEl.TryGetProperty("grid_row", out var rowEl) && rowEl.TryGetInt32(out var row)) |
| 43 | Grid.SetRow(control, row); |
| 44 | if (rootEl.TryGetProperty("grid_column", out var colEl) && colEl.TryGetInt32(out var col)) |
| 45 | Grid.SetColumn(control, col); |
| 46 | if (rootEl.TryGetProperty("grid_row_span", out var rowSpanEl) && rowSpanEl.TryGetInt32(out var rowSpan)) |
| 47 | Grid.SetRowSpan(control, rowSpan); |
| 48 | if (rootEl.TryGetProperty("grid_column_span", out var colSpanEl) && colSpanEl.TryGetInt32(out var colSpan)) |
| 49 | Grid.SetColumnSpan(control, colSpan); |
| 50 | |
| 51 | if (rootEl.TryGetProperty("canvas_left", out var leftEl) && leftEl.TryGetDouble(out var canvasLeft)) |
| 52 | Canvas.SetLeft(control, canvasLeft); |
| 53 | if (rootEl.TryGetProperty("canvas_top", out var topEl) && topEl.TryGetDouble(out var canvasTop)) |
| 54 | Canvas.SetTop(control, canvasTop); |
| 55 | |
| 56 | if (rootEl.TryGetProperty("dock", out var dockEl)) |
| 57 | { |
| 58 | var dockStr = dockEl.GetString()?.Trim(); |
| 59 | if (Enum.TryParse<Avalonia.Controls.Dock>(dockStr, ignoreCase: true, out var dock)) |
| 60 | DockPanel.SetDock(control, dock); |
| 61 | } |
| 62 | |
| 63 | if (rootEl.TryGetProperty("visible", out var visEl) && (visEl.ValueKind == JsonValueKind.True || visEl.ValueKind == JsonValueKind.False)) |
| 64 | control.IsVisible = visEl.GetBoolean(); |
| 65 | |
| 66 | return "OK"; |
| 67 | } |
| 68 | catch (JsonException ex) |
| 69 | { |
| 70 | return "Invalid layout JSON: " + ex.Message; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | private static Thickness? ParseThickness(JsonElement el) |
| 75 | { |
| 76 | if (el.ValueKind == JsonValueKind.Array && el.GetArrayLength() >= 4) |
| 77 | { |
| 78 | var a = el; |
| 79 | return new Thickness(a[0].GetDouble(), a[1].GetDouble(), a[2].GetDouble(), a[3].GetDouble()); |
| 80 | } |
| 81 | if (el.ValueKind == JsonValueKind.Object) |
| 82 | { |
| 83 | var left = el.TryGetProperty("left", out var l) ? l.GetDouble() : 0; |
| 84 | var top = el.TryGetProperty("top", out var t) ? t.GetDouble() : 0; |
| 85 | var right = el.TryGetProperty("right", out var r) ? r.GetDouble() : 0; |
| 86 | var bottom = el.TryGetProperty("bottom", out var b) ? b.GetDouble() : 0; |
| 87 | return new Thickness(left, top, right, bottom); |
| 88 | } |
| 89 | return null; |
| 90 | } |
| 91 | } |
| 92 | |