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settings.js
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settings.js
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import actionTypes from '../actionTypes';
import nextState from './nextState';
/**
* Reducer for actions that modify the state of the settings
*
* @param {Object|undefined} state
* @param {Object} action
* @return {Object} state after action
*/
export default function settings( state, action ) {
if ( state === undefined ) {
state = {
shouldShow: false,
previewTypesEnabled: {},
showHelp: false,
shouldShowFooterLink: false
};
}
switch ( action.type ) {
case actionTypes.SETTINGS_SHOW:
return nextState( state, {
shouldShow: true,
showHelp: false
} );
case actionTypes.SETTINGS_HIDE:
return nextState( state, {
shouldShow: false,
showHelp: false
} );
case actionTypes.SETTINGS_CHANGE: {
const types = Object.keys( action.newValue ),
nothingChanged = types
.every( ( type ) => action.oldValue[ type ] === action.newValue[ type ] ),
// Check if at least one setting has been deactivated that was active before
userOptedOut = types
.some( ( type ) => action.oldValue[ type ] && !action.newValue[ type ] ),
// Warning, when the state is null the user can't re-enable this popup type!
anyDisabled = types
.some( ( type ) => action.newValue[ type ] === false );
if ( nothingChanged ) {
// If the setting is the same, just hide the dialogs
return nextState( state, {
shouldShow: false
} );
}
return nextState( state, {
// If we enabled, we just hide directly, no help
// If we disabled, keep it showing and let the ui show the help.
shouldShow: userOptedOut,
showHelp: userOptedOut,
// Since the footer link is only ever shown to anonymous users (see
// the BOOT case below), state.userIsAnon is always truthy here.
shouldShowFooterLink: anyDisabled
} );
}
case actionTypes.REGISTER_SETTING: {
const previewTypesEnabled = Object.assign( {}, state.previewTypesEnabled, {
[ action.name ]: action.enabled
} );
return nextState( state, {
previewTypesEnabled,
shouldShowFooterLink: state.shouldShowFooterLink || !action.enabled
} );
}
case actionTypes.BOOT: {
// Warning, when the state is null the user can't re-enable this popup type!
const anyDisabled = Object.keys( action.initiallyEnabled )
.some( ( type ) => action.initiallyEnabled[ type ] === false );
const previewTypesEnabled = Object.assign( {}, action.initiallyEnabled );
return nextState( state, {
previewTypesEnabled,
shouldShowFooterLink: action.user.isAnon && anyDisabled
} );
}
default:
return state;
}
}

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