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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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const {
MESSAGES_ADD,
MESSAGES_CLEAR,
PRIVATE_MESSAGES_CLEAR,
FRONTS_TO_RELEASE_CLEAR,
} = require("resource://devtools/client/webconsole/constants.js");
/**
* This enhancer is responsible for releasing actors on the backend.
* When messages with arguments are removed from the store we should also
* clean up the backend.
*/
function enableActorReleaser(webConsoleUI) {
return next => (reducer, initialState, enhancer) => {
function releaseActorsEnhancer(state, action) {
state = reducer(state, action);
const { type } = action;
if (
webConsoleUI &&
[MESSAGES_ADD, MESSAGES_CLEAR, PRIVATE_MESSAGES_CLEAR].includes(type)
) {
const promises = [];
state.messages.frontsToRelease.forEach(front => {
// We only release the front if it actually has a release method, if it isn't
// already destroyed, and if it's not in the sidebar (where we might still need it).
if (
front &&
typeof front.release === "function" &&
!front.isDestroyed() &&
(!state.ui.frontInSidebar ||
state.ui.frontInSidebar.actorID !== front.actorID)
) {
promises.push(front.release());
}
});
// Emit an event we can listen to to make sure all the fronts were released.
Promise.all(promises).then(() =>
webConsoleUI.emitForTests("fronts-released")
);
// Reset `frontsToRelease` in message reducer.
state = reducer(state, {
type: FRONTS_TO_RELEASE_CLEAR,
});
}
return state;
}
return next(releaseActorsEnhancer, initialState, enhancer);
};
}
module.exports = enableActorReleaser;
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