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feat!: tea contexts and query terminal capabilities
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package tea | ||
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| import ( | ||
| "context" | ||
| "image/color" | ||
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| "github.com/charmbracelet/lipgloss" | ||
| ) | ||
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| // Context represents a Bubble Tea program's context. It is passed to the | ||
| // program's Init, Update, and View functions to provide information about the | ||
| // program's state and to allow them to interact with the terminal. | ||
| type Context interface { | ||
| context.Context | ||
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| // BackgroundColor returns the current background color of the terminal. | ||
| // It returns nil if the terminal's doesn't support querying the background | ||
| // color. | ||
| BackgroundColor() color.Color | ||
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| // SupportsEnhancedKeyboard reports whether the terminal supports enhanced | ||
| // keyboard keys. On Windows, this means it supports virtual keys like and | ||
| // the Windows Console API. On Unix, this means it supports the Kitty | ||
| // Keyboard Protocol. | ||
| SupportsEnhancedKeyboard() bool | ||
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| // NewStyle returns a new Lip Gloss style that is suitable for the program's | ||
| // environment. | ||
| NewStyle() lipgloss.Style | ||
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| // ColorProfile returns the terminal's color profile. | ||
| ColorProfile() lipgloss.Profile | ||
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| // what else? | ||
| } | ||
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| type teaContext struct { | ||
| context.Context | ||
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| profile lipgloss.Profile | ||
| kittyFlags int | ||
| backgroundColor color.Color | ||
| hasLightBg bool // cached value | ||
| } | ||
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| func newContext(ctx context.Context) *teaContext { | ||
| c := new(teaContext) | ||
| c.Context = ctx | ||
| c.kittyFlags = -1 | ||
| return c | ||
| } | ||
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| func (c *teaContext) BackgroundColor() color.Color { | ||
| return c.backgroundColor | ||
| } | ||
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| func (c *teaContext) SupportsEnhancedKeyboard() bool { | ||
| return c.kittyFlags >= 0 | ||
| } | ||
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| func (c *teaContext) NewStyle() lipgloss.Style { | ||
| return lipgloss.NewStyle().ColorProfile(c.profile).HasLightBackground(c.hasLightBg) | ||
| } | ||
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| func (c *teaContext) ColorProfile() lipgloss.Profile { | ||
| return c.profile | ||
| } |
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