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// Copyright 2006 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview Client positioning class.
*
* @author eae@google.com (Emil A Eklund)
*/
goog.provide('goog.positioning.AnchoredPosition');
goog.require('goog.positioning');
goog.require('goog.positioning.AbstractPosition');
/**
* Encapsulates a popup position where the popup is anchored at a corner of
* an element.
*
* When using AnchoredPosition, it is recommended that the popup element
* specified in the Popup constructor or Popup.setElement be absolutely
* positioned.
*
* @param {Element} anchorElement Element the movable element should be
* anchored against.
* @param {goog.positioning.Corner} corner Corner of anchored element the
* movable element should be positioned at.
* @param {number=} opt_overflow Overflow handling mode. Defaults to IGNORE if
* not specified. Bitmap, {@see goog.positioning.Overflow}.
* @constructor
* @extends {goog.positioning.AbstractPosition}
*/
goog.positioning.AnchoredPosition = function(
anchorElement, corner, opt_overflow) {
/**
* Element the movable element should be anchored against.
* @type {Element}
*/
this.element = anchorElement;
/**
* Corner of anchored element the movable element should be positioned at.
* @type {goog.positioning.Corner}
*/
this.corner = corner;
/**
* Overflow handling mode. Defaults to IGNORE if not specified.
* Bitmap, {@see goog.positioning.Overflow}.
* @type {number|undefined}
* @private
*/
this.overflow_ = opt_overflow;
};
goog.inherits(
goog.positioning.AnchoredPosition, goog.positioning.AbstractPosition);
/**
* Repositions the movable element.
*
* @param {Element} movableElement Element to position.
* @param {goog.positioning.Corner} movableCorner Corner of the movable element
* that should be positioned adjacent to the anchored element.
* @param {goog.math.Box=} opt_margin A margin specifin pixels.
* @param {goog.math.Size=} opt_preferredSize PreferredSize of the
* movableElement (unused in this class).
* @override
*/
goog.positioning.AnchoredPosition.prototype.reposition = function(
movableElement, movableCorner, opt_margin, opt_preferredSize) {
goog.positioning.positionAtAnchor(
this.element, this.corner, movableElement, movableCorner, undefined,
opt_margin, this.overflow_);
};
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