gecko-dev/devtools/client/memory/initializer.js

70 строки
2.0 KiB
JavaScript

/* 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/. */
/* exported initialize, destroy, Promise */
"use strict";
const { createFactory, createElement } = require("devtools/client/shared/vendor/react");
const ReactDOM = require("devtools/client/shared/vendor/react-dom");
const { Provider } = require("devtools/client/shared/vendor/react-redux");
const App = createFactory(require("devtools/client/memory/app"));
const Store = require("devtools/client/memory/store");
const { assert } = require("devtools/shared/DevToolsUtils");
// Shared variables used by several methods of this module.
let root, store, unsubscribe;
const initialize = async function() {
// Exposed by panel.js
const { gFront, gToolbox, gHeapAnalysesClient } = window;
root = document.querySelector("#app");
store = Store();
const app = createElement(App, {
toolbox: gToolbox,
front: gFront,
heapWorker: gHeapAnalysesClient,
});
const provider = createElement(Provider, { store }, app);
ReactDOM.render(provider, root);
unsubscribe = store.subscribe(onStateChange);
// Exposed for tests.
window.gStore = store;
};
const destroy = async function() {
const ok = ReactDOM.unmountComponentAtNode(root);
assert(ok, "Should successfully unmount the memory tool's top level React component");
unsubscribe();
};
// Current state
let isHighlighted;
/**
* Fired on any state change, currently only handles toggling
* the highlighting of the tool when recording allocations.
*/
function onStateChange() {
const { gToolbox } = window;
const isRecording = store.getState().allocations.recording;
if (isRecording === isHighlighted) {
return;
}
if (isRecording) {
gToolbox.highlightTool("memory");
} else {
gToolbox.unhighlightTool("memory");
}
isHighlighted = isRecording;
}
module.exports = { initialize, destroy };