70 lines
1.9 KiB
JavaScript
70 lines
1.9 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
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"use strict";
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const initialReducerState = {
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// Array of targetFront
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targets: [],
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// The selected targetFront instance
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selected: null,
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// timestamp of the last time a target was updated (i.e. url/title was updated).
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// This is used by the EvaluationContextSelector component to re-render the list of
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// targets when the list itself did not change (no addition/removal)
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lastTargetRefresh: Date.now(),
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};
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function update(state = initialReducerState, action) {
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switch (action.type) {
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case "SELECT_TARGET": {
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const { targetActorID } = action;
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if (state.selected?.actorID === targetActorID) {
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return state;
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}
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const selectedTarget = state.targets.find(
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target => target.actorID === targetActorID
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);
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// It's possible that the target reducer is missing a target
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// e.g. workers, remote iframes, etc. (Bug 1594754)
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if (!selectedTarget) {
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return state;
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}
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return { ...state, selected: selectedTarget };
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}
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case "REGISTER_TARGET": {
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return {
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...state,
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targets: [...state.targets, action.targetFront],
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};
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}
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case "REFRESH_TARGETS": {
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// The data _in_ targetFront was updated, so we only need to mutate the state,
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// while keeping the same values.
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return {
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...state,
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lastTargetRefresh: Date.now(),
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};
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}
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case "UNREGISTER_TARGET": {
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const targets = state.targets.filter(
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target => target !== action.targetFront
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);
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let { selected } = state;
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if (selected === action.targetFront) {
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selected = null;
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}
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return { ...state, targets, selected };
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}
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}
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return state;
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}
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module.exports = update;
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