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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
"use strict";
const {
HISTORY_BACK,
HISTORY_FORWARD,
function getHistory(state) {
return state.history;
}
function getHistoryEntries(state) {
return state.history.entries;
}
function getHistoryValue(state, direction) {
if (direction == HISTORY_BACK) {
return getPreviousHistoryValue(state);
}
if (direction == HISTORY_FORWARD) {
return getNextHistoryValue(state);
}
return null;
}
function getNextHistoryValue(state) {
if (state.history.position < state.history.entries.length - 1) {
return state.history.entries[state.history.position + 1];
}
// The user didn't pick up anything from the history and returned
// back to the previous value (if any) that was in the input box.
return state.history.originalUserValue;
}
function getPreviousHistoryValue(state) {
if (state.history.position > 0) {
return state.history.entries[state.history.position - 1];
}
return null;
}
function getReverseSearchResult(state) {
const { history } = state;
const { currentReverseSearchResults, currentReverseSearchResultsPosition } =
history;
if (
!Array.isArray(currentReverseSearchResults) ||
currentReverseSearchResults.length === 0 ||
!Number.isInteger(currentReverseSearchResultsPosition)
) {
return null;
}
return currentReverseSearchResults[currentReverseSearchResultsPosition];
}
function getReverseSearchResultPosition(state) {
const { history } = state;
const { currentReverseSearchResultsPosition } = history;
if (!Number.isInteger(currentReverseSearchResultsPosition)) {
return currentReverseSearchResultsPosition;
}
return currentReverseSearchResultsPosition + 1;
}
function getReverseSearchTotalResults(state) {
const { history } = state;
const { currentReverseSearchResults } = history;
if (!currentReverseSearchResults) {
return null;
}
return currentReverseSearchResults.length;
}
function getTerminalEagerResult(state) {
const { history } = state;
return history.terminalEagerResult;
}
module.exports = {
getHistory,
getHistoryEntries,
getHistoryValue,
getReverseSearchResult,
getReverseSearchResultPosition,
getReverseSearchTotalResults,
getTerminalEagerResult,
};