| 1 | import { Customizations, mergeSettings } from '@uifabric/utilities';
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| 2 | /**
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| 3 | * @internal
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| 4 | * This function is still in experimental phase in support of Foundation experimental development.
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| 5 | * Its API signature and existence are subject to change.
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| 6 | *
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| 7 | * Modify context to activate the specified scheme or theme. For schemes, look in context (if available) and fall back
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| 8 | * to global Customizations. If both scheme and theme are specified, scheme will be looked up in theme. In this case,
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| 9 | * scheme must be present in theme arg, otherwise new context will default to theme arg (there is no fallback to
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| 10 | * settings to look up scheme.)
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| 11 | *
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| 12 | * @param context - Context in which to get schemed customizations.
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| 13 | * @param scheme - Scheme to get customizations for from theme arg (if supplied) OR from context and global settings.
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| 14 | * @param theme - Theme to merge into context.
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| 15 | * @returns modified schemed context if scheme is valid and not already applied, unmodified context otherwise.
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| 16 | */
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| 17 | export function getThemedContext(context, scheme, theme) {
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| 18 | var newContext = context;
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| 19 | var newSettings;
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| 20 | // Only fall back to context and customizations when theme arg is not provided.
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| 21 | var schemeSource = theme || Customizations.getSettings(['theme'], undefined, context.customizations).theme;
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| 22 | if (theme) {
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| 23 | newSettings = { theme: theme };
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| 24 | }
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| 25 | var schemeTheme = scheme && schemeSource && schemeSource.schemes && schemeSource.schemes[scheme];
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| 26 | // These first two checks are logically redundant but TS doesn't infer schemeSource.schemes is defined
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| 27 | // when schemeTheme is defined.
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| 28 | if (schemeSource && schemeTheme && schemeSource !== schemeTheme) {
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| 29 | newSettings = { theme: schemeTheme };
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| 30 | newSettings.theme.schemes = schemeSource.schemes;
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| 31 | }
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| 32 | if (newSettings) {
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| 33 | newContext = {
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| 34 | customizations: {
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| 35 | settings: mergeSettings(context.customizations.settings, newSettings),
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| 36 | scopedSettings: context.customizations.scopedSettings,
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| 37 | },
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| 38 | };
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| 39 | }
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| 40 | return newContext;
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| 41 | }
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| 42 | //# sourceMappingURL=scheme.js.map |
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