"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ensureViewBoundingRect = ensureViewBoundingRect;
exports.getPointRect = getPointRect;
exports.getRect = getRect;
exports.getParentNode = getParentNode;
exports.getScrollParent = getScrollParent;
let viewMeasurer = null;
function ensureViewBoundingRect() {
    if (viewMeasurer === null) {
        viewMeasurer = document.getElementById('v-binder-view-measurer');
        if (viewMeasurer === null) {
            viewMeasurer = document.createElement('div');
            viewMeasurer.id = 'v-binder-view-measurer';
            const { style } = viewMeasurer;
            style.position = 'fixed';
            style.left = '0';
            style.right = '0';
            style.top = '0';
            style.bottom = '0';
            style.pointerEvents = 'none';
            style.visibility = 'hidden';
            document.body.appendChild(viewMeasurer);
        }
    }
    return viewMeasurer.getBoundingClientRect();
}
function getPointRect(x, y) {
    const viewRect = ensureViewBoundingRect();
    return {
        top: y,
        left: x,
        height: 0,
        width: 0,
        right: viewRect.width - x,
        bottom: viewRect.height - y
    };
}
function getRect(el) {
    const elRect = el.getBoundingClientRect();
    const viewRect = ensureViewBoundingRect();
    return {
        left: elRect.left - viewRect.left,
        top: elRect.top - viewRect.top,
        bottom: viewRect.height + viewRect.top - elRect.bottom,
        right: viewRect.width + viewRect.left - elRect.right,
        width: elRect.width,
        height: elRect.height
    };
}
function getParentNode(node) {
    // document type
    if (node.nodeType === 9) {
        return null;
    }
    return node.parentNode;
}
function getScrollParent(node) {
    if (node === null)
        return null;
    const parentNode = getParentNode(node);
    if (parentNode === null) {
        return null;
    }
    // Document
    if (parentNode.nodeType === 9) {
        return document;
    }
    // Element
    if (parentNode.nodeType === 1) {
        // Firefox want us to check `-x` and `-y` variations as well
        const { overflow, overflowX, overflowY } = getComputedStyle(parentNode);
        if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {
            return parentNode;
        }
    }
    return getScrollParent(parentNode);
}