/* 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/>. */
/* * Finds the hidden tabs by comparing the tabs' top offset. * hidden tabs will have a great top offset. * * @param sourceTabs Array * @param sourceTabEls HTMLCollection * * @returns Array
*/
export function getHiddenTabs(sourceTabs, sourceTabEls) {
sourceTabEls = [].slice.call(sourceTabEls); function getTopOffset() { const topOffsets = sourceTabEls.map(t => t.getBoundingClientRect().top); return Math.min(...topOffsets);
}
function hasTopOffset(el) { // adding 10px helps account for cases where the tab might be offset by // styling such as selected tabs which don't have a border. const tabTopOffset = getTopOffset(); return el.getBoundingClientRect().top > tabTopOffset + 10;
}
return sourceTabs.filter((tab, index) => { const element = sourceTabEls[index]; return element && hasTopOffset(element);
});
}
/** * Determines if a tab exists with the following properties * * @param {Object} tab * @param {String} url * @param {Boolean} isOriginal
*/
export function isSimilarTab(tab, url, isOriginal) { return tab.url === url && tab.isOriginal === isOriginal;
}
/** * This cleans up some tab info (source id and thread info), * mostly for persiting to pref and for navigation or reload. * This is neccesary because the source and thread are destroyed * and re-created across navigations / reloads. * * @param {Array} tabs
*/
export function persistTabs(tabs) { return [...tabs]
.filter(tab => tab.url)
.map(tab => ({
...tab,
source: null,
sourceActor: null,
}));
}
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