all files / common/ position.js

100% Statements 94/94
92.86% Branches 52/56
100% Functions 14/14
100% Lines 94/94
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define(["require", "exports", "@syncfusion/ej2-base"], function (require, exports, ej2_base_1) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    var elementRect;
    var popupRect;
    var element;
    var parentDocument;
    var fixedParent = false;
    /**
     *
     * @param {HTMLElement} anchor - specifies the element
     * @param {HTMLElement} element - specifies the element
     * @returns {OffsetPosition} - returns the value
     */
    function calculateRelativeBasedPosition(anchor, element) {
        var fixedElement = false;
        var anchorPos = { left: 0, top: 0 };
        var tempAnchor = anchor;
        if (!anchor || !element) {
            return anchorPos;
        }
        if (ej2_base_1.isNullOrUndefined(element.offsetParent) && element.style.position === 'fixed') {
            fixedElement = true;
        }
        while ((element.offsetParent || fixedElement) && anchor && element.offsetParent !== anchor) {
            anchorPos.left += anchor.offsetLeft;
            anchorPos.top += anchor.offsetTop;
            anchor = anchor.offsetParent;
        }
        anchor = tempAnchor;
        while ((element.offsetParent || fixedElement) && anchor && element.offsetParent !== anchor) {
            anchorPos.left -= anchor.scrollLeft;
            anchorPos.top -= anchor.scrollTop;
            anchor = anchor.parentElement;
        }
        return anchorPos;
    }
    exports.calculateRelativeBasedPosition = calculateRelativeBasedPosition;
    /**
     *
     * @param {Element} currentElement - specifies the element
     * @param {string} positionX - specifies the position
     * @param {string} positionY - specifies the position
     * @param {boolean} parentElement - specifies the boolean
     * @param {ClientRect} targetValues - specifies the client
     * @returns {OffsetPosition} - returns the position
     */
    function calculatePosition(currentElement, positionX, positionY, parentElement, targetValues) {
        popupRect = undefined;
        popupRect = targetValues;
        fixedParent = parentElement ? true : false;
        if (!currentElement) {
            return { left: 0, top: 0 };
        }
        if (!positionX) {
            positionX = 'left';
        }
        if (!positionY) {
            positionY = 'top';
        }
        parentDocument = currentElement.ownerDocument;
        element = currentElement;
        var pos = { left: 0, top: 0 };
        return updatePosition(positionX.toLowerCase(), positionY.toLowerCase(), pos);
    }
    exports.calculatePosition = calculatePosition;
    /**
     *
     * @param {number} value - specifies the number
     * @param {OffsetPosition} pos - specifies the position
     * @returns {void}
     */
    function setPosx(value, pos) {
        pos.left = value;
    }
    /**
     *
     * @param {number} value - specifies the number
     * @param {OffsetPosition} pos - specifies the position
     * @returns {void}
     */
    function setPosy(value, pos) {
        pos.top = value;
    }
    /**
     *
     * @param {string} posX - specifies the position
     * @param {string} posY - specifies the position
     * @param {OffsetPosition} pos - specifies the position
     * @returns {OffsetPosition} - returns the postion
     */
    function updatePosition(posX, posY, pos) {
        elementRect = element.getBoundingClientRect();
        switch (posY + posX) {
            case 'topcenter':
                setPosx(getElementHCenter(), pos);
                setPosy(getElementTop(), pos);
                break;
            case 'topright':
                setPosx(getElementRight(), pos);
                setPosy(getElementTop(), pos);
                break;
            case 'centercenter':
                setPosx(getElementHCenter(), pos);
                setPosy(getElementVCenter(), pos);
                break;
            case 'centerright':
                setPosx(getElementRight(), pos);
                setPosy(getElementVCenter(), pos);
                break;
            case 'centerleft':
                setPosx(getElementLeft(), pos);
                setPosy(getElementVCenter(), pos);
                break;
            case 'bottomcenter':
                setPosx(getElementHCenter(), pos);
                setPosy(getElementBottom(), pos);
                break;
            case 'bottomright':
                setPosx(getElementRight(), pos);
                setPosy(getElementBottom(), pos);
                break;
            case 'bottomleft':
                setPosx(getElementLeft(), pos);
                setPosy(getElementBottom(), pos);
                break;
            default:
            case 'topleft':
                setPosx(getElementLeft(), pos);
                setPosy(getElementTop(), pos);
                break;
        }
        element = null;
        return pos;
    }
    /**
     * @returns {number} - specifies the number value
     */
    function getBodyScrollTop() {
        return parentDocument.documentElement.scrollTop || parentDocument.body.scrollTop;
    }
    /**
     * @returns {number} - specifies the number value
     */
    function getBodyScrollLeft() {
        return parentDocument.documentElement.scrollLeft || parentDocument.body.scrollLeft;
    }
    /**
     * @returns {number} - specifies the number value
     */
    function getElementBottom() {
        return fixedParent ? elementRect.bottom : elementRect.bottom + getBodyScrollTop();
    }
    /**
     * @returns {number} - specifies the number value
     */
    function getElementVCenter() {
        return getElementTop() + (elementRect.height / 2);
    }
    /**
     * @returns {number} - specifies the number value
     */
    function getElementTop() {
        return fixedParent ? elementRect.top : elementRect.top + getBodyScrollTop();
    }
    /**
     * @returns {number} - specifies the number value
     */
    function getElementLeft() {
        return elementRect.left + getBodyScrollLeft();
    }
    /**
     * @returns {number} - specifies the number value
     */
    function getElementRight() {
        var popupWidth = (element && (element.classList.contains('e-date-wrapper') || element.classList.contains('e-datetime-wrapper') || (element.classList.contains('e-ddl') && element.classList.contains('e-rtl')) || element.classList.contains('e-date-range-wrapper'))) ? (popupRect ? popupRect.width : 0) :
            (popupRect && (elementRect.width >= popupRect.width) ? popupRect.width : 0);
        return elementRect.right + getBodyScrollLeft() - popupWidth;
    }
    /**
     * @returns {number} - specifies the number value
     */
    function getElementHCenter() {
        return getElementLeft() + (elementRect.width / 2);
    }
});