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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 {
createSelector,
const {
REQUESTS_WATERFALL,
const EPSILON = 0.001;
const getWaterfallScale = createSelector(
state => state.requests.firstStartedMs,
state => state.requests.lastEndedMs,
state => state.timingMarkers.firstDocumentDOMContentLoadedTimestamp,
state => state.timingMarkers.firstDocumentLoadTimestamp,
state => state.ui.waterfallWidth,
(
firstStartedMs,
lastEndedMs,
firstDocumentDOMContentLoadedTimestamp,
firstDocumentLoadTimestamp,
waterfallWidth
) => {
if (firstStartedMs === +Infinity || waterfallWidth === null) {
return null;
}
const lastEventMs = Math.max(
lastEndedMs,
firstDocumentDOMContentLoadedTimestamp,
firstDocumentLoadTimestamp
);
const longestWidth = lastEventMs - firstStartedMs;
// Reduce 20px for the last request's requests-list-timings-total
return Math.min(
Math.max(
(waterfallWidth - REQUESTS_WATERFALL.LABEL_WIDTH - 20) / longestWidth,
EPSILON
),
1
);
}
);
function getVisibleColumns(columns) {
return Object.entries(columns).filter(([_, shown]) => shown);
}
const getColumns = createSelector(
state => state.ui,
state => state.search,
(ui, search) => {
if (
((ui.networkDetailsOpen || search.panelOpen) &&
getVisibleColumns(ui.columns).length === 1 &&
ui.columns.waterfall) ||
(!ui.networkDetailsOpen && !search.panelOpen)
) {
return ui.columns;
}
// Remove the Waterfall/Timeline column from the list of available
// columns if the details side-bar is opened and more than one column is
// visible.
const columns = { ...ui.columns };
delete columns.waterfall;
return columns;
}
);
module.exports = {
getColumns,
getVisibleColumns,
getWaterfallScale,
};