native-fn/dist/plugin/dimension/index.cjs

'use strict';

var ENTRIES = [];
var FALLBACK_DIMENSION = {
    innerWidth: -1,
    innerHeight: -1,
    outerWidth: -1,
    outerHeight: -1,
    scale: 1,
};

var currentDimension = null;
var Dimension = {
    get value() {
        return getDimension();
    },
    onchange: onchange,
    Constants: {},
    Errors: {},
};
function getDimensionFromWindow() {
    if (typeof globalThis.innerWidth !== 'undefined') {
        return {
            innerWidth: globalThis.innerWidth,
            innerHeight: globalThis.innerHeight,
            outerWidth: globalThis.outerWidth,
            outerHeight: globalThis.outerHeight,
            scale: globalThis.devicePixelRatio || 1
        };
    }
    return FALLBACK_DIMENSION;
}
function getDimension() {
    return getDimensionFromWindow();
}
function addListener(capture) {
    currentDimension = getDimension();
    if (typeof globalThis.addEventListener === 'function')
        globalThis.addEventListener('resize', onResize, capture);
}
function removeListener(capture) {
    currentDimension = null;
    if (typeof globalThis.removeEventListener === 'function')
        globalThis.removeEventListener('resize', onResize, capture);
}
function onResize() {
    var dimension = getDimension();
    if (currentDimension === null || dimension.innerWidth !== currentDimension.innerWidth || dimension.innerHeight !== currentDimension.innerHeight || dimension.outerWidth !== currentDimension.outerWidth || dimension.outerHeight !== currentDimension.outerHeight || dimension.scale !== currentDimension.scale) {
        currentDimension = dimension;
        notify(dimension);
    }
}
function notify(dimension) {
    for (var i = 0; i < ENTRIES.length; i++) {
        var entry = ENTRIES[i];
        entry.fn(dimension);
        if (entry.once)
            removeEntry(entry);
    }
}
function removeEntry(entry) {
    var index = indexOfEntry(entry);
    if (index !== -1)
        ENTRIES.splice(index, 1);
    if (ENTRIES.length === 0)
        removeListener(entry.capture);
}
function indexOfEntry(entry) {
    for (var i = 0; i < ENTRIES.length; i++)
        if (ENTRIES[i].fn === entry.fn && ENTRIES[i].capture === entry.capture)
            return i;
    return -1;
}
function onchange(listener, options) {
    if (options === void 0) { options = false; }
    var entry = { fn: listener, capture: false, once: false };
    if (typeof options === 'boolean')
        options = { capture: options };
    if (typeof options.capture !== 'undefined')
        entry.capture = options.capture;
    if (typeof options.once !== 'undefined')
        entry.once = options.once;
    if (typeof options.signal !== 'undefined')
        entry.signal = options.signal;
    var index = indexOfEntry(entry);
    if (index === -1) {
        ENTRIES.push(entry);
        if (ENTRIES.length === 1)
            addListener(entry.capture);
    }
    else if (ENTRIES[index].once && !entry.once) {
        ENTRIES[index].once = false;
    }
    var cleanup = function () {
        if (typeof entry.signal !== 'undefined')
            entry.signal.removeEventListener('abort', cleanup);
        removeEntry(entry);
    };
    if (typeof entry.signal !== 'undefined') {
        if (entry.signal.aborted)
            removeEntry(entry);
        else
            entry.signal.addEventListener('abort', cleanup);
    }
    return function () {
        removeEntry(entry);
    };
}

module.exports = Dimension;