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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/>. */
import { createSelector } from "devtools/client/shared/vendor/reselect";
import { getPrettySourceURL } from "../utils/source";
import { getSpecificSourceByURL } from "./sources";
import { isSimilarTab } from "../utils/tabs";
export const getTabs = state => state.tabs.tabs;
// Return the list of tabs which relates to an active source
export const getSourceTabs = createSelector(getTabs, tabs =>
tabs.filter(tab => tab.source)
);
export const getSourcesForTabs = createSelector(getSourceTabs, sourceTabs => {
return sourceTabs.map(tab => tab.source);
});
export function tabExists(state, sourceId) {
return !!getSourceTabs(state).find(tab => tab.source.id == sourceId);
}
export function hasPrettyTab(state, source) {
const prettyUrl = getPrettySourceURL(source.url);
return getTabs(state).some(tab => tab.url === prettyUrl);
}
/**
* Gets the next tab to select when a tab closes. Heuristics:
* 1. if the selected tab is available, it remains selected
* 2. if it is gone, the next available tab to the left should be active
* 3. if the first tab is active and closed, select the second tab
*/
export function getNewSelectedSource(state, tabList) {
const { selectedLocation } = state.sources;
const availableTabs = getTabs(state);
if (!selectedLocation) {
return null;
}
const selectedSource = selectedLocation.source;
if (!selectedSource) {
return null;
}
const matchingTab = availableTabs.find(tab =>
isSimilarTab(tab, selectedSource.url, selectedSource.isOriginal)
);
if (matchingTab) {
const specificSelectedSource = getSpecificSourceByURL(
state,
selectedSource.url,
selectedSource.isOriginal
);
if (specificSelectedSource) {
return specificSelectedSource;
}
return null;
}
const tabUrls = tabList.map(tab => tab.url);
const leftNeighborIndex = Math.max(
tabUrls.indexOf(selectedSource.url) - 1,
0
);
const lastAvailbleTabIndex = availableTabs.length - 1;
const newSelectedTabIndex = Math.min(leftNeighborIndex, lastAvailbleTabIndex);
const availableTab = availableTabs[newSelectedTabIndex];
if (availableTab) {
const tabSource = getSpecificSourceByURL(
state,
availableTab.url,
availableTab.isOriginal
);
if (tabSource) {
return tabSource;
}
}
return null;
}
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