mastodon-glitch/app/javascript/mastodon/reducers/modal.ts

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import type { Reducer } from '@reduxjs/toolkit';
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import { Record as ImmutableRecord, Stack } from 'immutable';
import { COMPOSE_UPLOAD_CHANGE_SUCCESS } from '../actions/compose';
import type { ModalType } from '../actions/modal';
import { openModal, closeModal } from '../actions/modal';
import { TIMELINE_DELETE } from '../actions/timelines';
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export type ModalProps = Record<string, unknown>;
interface Modal {
modalType: ModalType;
modalProps: ModalProps;
}
const Modal = ImmutableRecord<Modal>({
modalType: 'ACTIONS',
modalProps: ImmutableRecord({})(),
});
interface ModalState {
ignoreFocus: boolean;
stack: Stack<ImmutableRecord<Modal>>;
}
const initialState = ImmutableRecord<ModalState>({
ignoreFocus: false,
stack: Stack(),
})();
type State = typeof initialState;
interface PopModalOption {
modalType: ModalType | undefined;
ignoreFocus: boolean;
}
const popModal = (
state: State,
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{ modalType, ignoreFocus }: PopModalOption,
): State => {
if (
modalType === undefined ||
modalType === state.get('stack').get(0)?.get('modalType')
) {
return state
.set('ignoreFocus', !!ignoreFocus)
.update('stack', (stack) => stack.shift());
} else {
return state;
}
};
const pushModal = (
state: State,
modalType: ModalType,
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modalProps: ModalProps,
): State => {
return state.withMutations((record) => {
record.set('ignoreFocus', false);
record.update('stack', (stack) =>
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stack.unshift(Modal({ modalType, modalProps })),
);
});
};
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export const modalReducer: Reducer<State> = (state = initialState, action) => {
if (openModal.match(action))
return pushModal(
state,
action.payload.modalType,
action.payload.modalProps,
);
else if (closeModal.match(action)) return popModal(state, action.payload);
// TODO: type those actions
else if (action.type === COMPOSE_UPLOAD_CHANGE_SUCCESS)
return popModal(state, { modalType: 'FOCAL_POINT', ignoreFocus: false });
else if (action.type === TIMELINE_DELETE)
return state.update('stack', (stack) =>
stack.filterNot(
(modal) => modal.get('modalProps').statusId === action.id,
),
);
else return state;
};