f2a6ddf449
This adds the INDIVIDUALS view state to the memory panel, renames "dominator tree display" to "label display", and adds a view for listing the individual nodes in a census group and inspecting each nodes' retaining paths.
50 lines
1.3 KiB
JavaScript
50 lines
1.3 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const { assert } = require("devtools/shared/DevToolsUtils");
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const { actions, viewState } = require("../constants");
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const handlers = Object.create(null);
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handlers[actions.POP_VIEW] = function (view, _) {
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assert(view.previous, "Had better have a previous view state when POP_VIEW");
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return Object.freeze({
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state: view.previous.state,
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previous: null,
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});
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};
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handlers[actions.CHANGE_VIEW] = function (view, action) {
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const { newViewState, oldDiffing, oldSelected } = action;
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assert(newViewState);
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if (newViewState === viewState.INDIVIDUALS) {
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assert(oldDiffing || oldSelected);
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return Object.freeze({
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state: newViewState,
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previous: Object.freeze({
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state: view.state,
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selected: oldSelected,
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diffing: oldDiffing,
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}),
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});
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}
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return Object.freeze({
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state: newViewState,
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previous: null,
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});
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};
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const DEFAULT_VIEW = {
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state: viewState.TREE_MAP,
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previous: null,
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};
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module.exports = function (view = DEFAULT_VIEW, action) {
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const handler = handlers[action.type];
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return handler ? handler(view, action) : view;
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};
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