components
Reusable UI component patterns: buttons, cards, input fields, loading states, badges, toggles, pickers, empty states. Use when creating any interactive UI element, building reusable views, or composing component hierarchies. Triggers: Button, TextField, Toggle, Picker, ProgressView, Label, badge, card, empty state.
ソース情報
- リポジトリ
- moasq/nanowave
- ソースの最終更新活動
- 2026年3月15日 20:51
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- 32
- フォーク
- 9
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ソースの指示 · 読み取り専用プレビュー- name
- components
- description
- Reusable UI component patterns: buttons, cards, input fields, loading states, badges, toggles, pickers, empty states. Use when creating any interactive UI element, building reusable views, or composing component hierarchies. Triggers: Button, TextField, Toggle, Picker, ProgressView, Label, badge, card, empty state.
# Component Patterns
BUTTON HIERARCHY (one primary per screen/section):
| Level | Style | Use Case | Code |
|------------|----------------------|-----------------------------------|----------------------------------------------------|
| Primary | .borderedProminent | Main action (Save, Submit, Start) | .buttonStyle(.borderedProminent).controlSize(.large)|
| Secondary | .bordered | Alternative action (Cancel, Edit) | .buttonStyle(.bordered) |
| Tertiary | .borderless | Low-emphasis (Skip, Learn More) | .buttonStyle(.borderless) |
| Destructive| .borderedProminent | Delete, Remove | .buttonStyle(.borderedProminent).tint(.red) |
- ONE .borderedProminent per screen/section — multiple primaries confuse the user.
- Full-width primary: .controlSize(.large).frame(maxWidth: .infinity).
- ALWAYS use Button() — never .onTapGesture for actions.
- Disabled buttons: .disabled(condition) — SwiftUI auto-handles opacity.
CARD DESIGN PATTERN:
```swift
VStack(alignment: .leading, spacing: AppTheme.Spacing.xSmall) {
HStack {
Image(systemName: "icon.name")
.font(AppTheme.Fonts.title3)
.foregroundStyle(AppTheme.Colors.primary)
Spacer()
Text("metadata")
.font(AppTheme.Fonts.caption)
.foregroundStyle(.secondary)
}
Text("Title")
.font(AppTheme.Fonts.headline)
Text("Description text goes here")
.font(AppTheme.Fonts.subheadline)
.foregroundStyle(.secondary)
}
.padding(AppTheme.Spacing.medium)
.background(AppTheme.Colors.surface)
.clipShape(RoundedRectangle(cornerRadius: AppTheme.Style.cornerRadius))
.shadow(color: .black.opacity(0.06), radius: 8, y: 4)
```
INPUT FIELD STATES:
- Normal: TextField with .textFieldStyle(.roundedBorder).
- Focused: @FocusState with visual highlight (border color change or underline).
- Error: red border + error message below field.
```swift
TextField("Email", text: $email)
.textFieldStyle(.roundedBorder)
.overlay(
RoundedRectangle(cornerRadius: 8)
.stroke(emailError != nil ? .red : .clear, lineWidth: 1)
)
if let error = emailError {
Text(error)
.font(AppTheme.Fonts.caption)
.foregroundStyle(AppTheme.Colors.error)
}
```
- Disabled: .disabled(true) — auto grays out.
- Form grouping: use Form or GroupBox for related fields.
LOADING STATES:
| Pattern | Use Case | Code |
|-------------------|-----------------------------------|-----------------------------------------|
| Inline spinner | Button action, single item | ProgressView().controlSize(.small) |
| Full-screen | Initial data load | ProgressView("Loading...") |
| Pull-to-refresh | List refresh | .refreshable { await refresh() } |
| Skeleton | Content placeholder | .redacted(reason: .placeholder) |
| Overlay | Blocking operation | .overlay { if loading { ProgressView() } } |
- Disable the triggering button while loading to prevent double-taps.
- Show loading for operations > 300ms. Instant operations need no indicator.
BADGE/CHIP PATTERN:
```swift
Text("Label")
.font(AppTheme.Fonts.caption)
.fontWeight(.medium)
.padding(.horizontal, 8)
.padding(.vertical, 4)
.background(AppTheme.Colors.primary.opacity(0.15))
.foregroundStyle(AppTheme.Colors.primary)
.clipShape(Capsule())
```
TOGGLE/SWITCH:
- Use Toggle for binary settings with immediate effect.
- Label must clearly describe the ON state.
- Group related toggles in a Section with a header.
PICKER PATTERNS:
- 2-4 options: Picker with .segmentedStyle.
- 5+ options: Picker with default menu style or NavigationLink to selection list.
- Date selection: DatePicker with appropriate displayedComponents.
EMPTY STATES:
- Always use ContentUnavailableView for empty lists/collections.
- Include: icon (SF Symbol), title, description, and action button if applicable.
- Never show a blank screen — empty state guides the user to the first action.
DIVIDERS:
- Use sparingly — prefer spacing to create visual separation.
- In lists: SwiftUI List provides dividers automatically.
- Custom dividers: Divider() with .padding(.horizontal) for inset style.
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