70 lines
1.3 KiB
JavaScript
70 lines
1.3 KiB
JavaScript
import createReducer from 'utils/createReducer';
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import * as actions from './actions';
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const HISTORY_MAX_LENGTH = 128;
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const initialState = {
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history: [],
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index: 0
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};
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export const getCurrentInputHistoryEntry = state => {
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if (state.input.index === -1) {
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return null;
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}
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return state.input.history[state.input.index];
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};
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export default createReducer(initialState, {
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[actions.INPUT_HISTORY_ADD](state, { line }) {
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if (line.trim() && line !== state.history[0]) {
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if (state.history.length === HISTORY_MAX_LENGTH) {
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state.history.pop();
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}
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state.history.unshift(line);
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}
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},
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[actions.INPUT_HISTORY_RESET](state) {
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state.index = -1;
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},
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[actions.INPUT_HISTORY_INCREMENT](state) {
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if (state.index < state.history.length - 1) {
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state.index++;
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}
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},
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[actions.INPUT_HISTORY_DECREMENT](state) {
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if (state.index >= 0) {
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state.index--;
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}
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}
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});
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export function addInputHistory(line) {
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return {
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type: actions.INPUT_HISTORY_ADD,
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line
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};
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}
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export function resetInputHistory() {
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return {
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type: actions.INPUT_HISTORY_RESET
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};
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}
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export function incrementInputHistory() {
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return {
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type: actions.INPUT_HISTORY_INCREMENT
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};
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}
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export function decrementInputHistory() {
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return {
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type: actions.INPUT_HISTORY_DECREMENT
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};
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}
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