/**
* @license
* Copyright The Closure Library Authors.
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @fileoverview Client positioning class.
*/
goog.provide('goog.positioning.ClientPosition');
goog.require('goog.asserts');
goog.require('goog.dom');
goog.require('goog.math.Coordinate');
goog.require('goog.positioning');
goog.require('goog.positioning.AbstractPosition');
goog.require('goog.style');
goog.requireType('goog.math.Box');
goog.requireType('goog.math.Size');
/**
* Encapsulates a popup position where the popup is positioned relative to the
* window (client) coordinates. This calculates the correct position to
* use even if the element is relatively positioned to some other element. This
* is for trying to position an element at the spot of the mouse cursor in
* a MOUSEMOVE event. Just use the event.clientX and event.clientY as the
* parameters.
*
* @param {number|goog.math.Coordinate} arg1 Left position or coordinate.
* @param {number=} opt_arg2 Top position.
* @constructor
* @extends {goog.positioning.AbstractPosition}
*/
goog.positioning.ClientPosition = function(arg1, opt_arg2) {
'use strict';
/**
* Coordinate to position popup at.
* @type {!goog.math.Coordinate}
*/
this.coordinate = arg1 instanceof goog.math.Coordinate ?
arg1 :
new goog.math.Coordinate(/** @type {number} */ (arg1), opt_arg2);
};
goog.inherits(
goog.positioning.ClientPosition, goog.positioning.AbstractPosition);
/**
* Repositions the popup according to the current state
*
* @param {Element} movableElement The DOM element of the popup.
* @param {goog.positioning.Corner} movableElementCorner The corner of
* the popup element that that should be positioned adjacent to
* the anchorElement. One of the goog.positioning.Corner
* constants.
* @param {goog.math.Box=} opt_margin A margin specified in pixels.
* @param {goog.math.Size=} opt_preferredSize Preferred size of the element.
* @override
*/
goog.positioning.ClientPosition.prototype.reposition = function(
movableElement, movableElementCorner, opt_margin, opt_preferredSize) {
'use strict';
goog.asserts.assert(movableElement);
// Translates the coordinate to be relative to the page.
var viewportOffset = goog.style.getViewportPageOffset(
goog.dom.getOwnerDocument(movableElement));
var x = this.coordinate.x + viewportOffset.x;
var y = this.coordinate.y + viewportOffset.y;
// Translates the coordinate to be relative to the offset parent.
var movableParentTopLeft =
goog.positioning.getOffsetParentPageOffset(movableElement);
x -= movableParentTopLeft.x;
y -= movableParentTopLeft.y;
goog.positioning.positionAtCoordinate(
new goog.math.Coordinate(x, y), movableElement, movableElementCorner,
opt_margin, null, null, opt_preferredSize);
};