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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 Anchored viewport positioning class with both adjust and
* resize options for the popup.
*
* @author eae@google.com (Emil A Eklund)
* @author tildahl@google.com (Michael Tildahl)
*/
goog.provide('goog.positioning.MenuAnchoredPosition');
goog.require('goog.math.Box');
goog.require('goog.math.Size');
goog.require('goog.positioning');
goog.require('goog.positioning.AnchoredViewportPosition');
goog.require('goog.positioning.Corner');
goog.require('goog.positioning.Overflow');
/**
* Encapsulates a popup position where the popup is anchored at a corner of
* an element. The positioning behavior changes based on the values of
* opt_adjust and opt_resize.
*
* When using this positioning object it's recommended that the movable element
* 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 {boolean=} opt_adjust Whether the positioning should be adjusted until
* the element fits inside the viewport even if that means that the anchored
* corners are ignored.
* @param {boolean=} opt_resize Whether the positioning should be adjusted until
* the element fits inside the viewport on the X axis and its height is
* resized so if fits in the viewport. This take precedence over opt_adjust.
* @constructor
* @extends {goog.positioning.AnchoredViewportPosition}
*/
goog.positioning.MenuAnchoredPosition = function(anchorElement,
corner,
opt_adjust,
opt_resize) {
goog.positioning.AnchoredViewportPosition.call(this, anchorElement, corner,
opt_adjust || opt_resize);
if (opt_adjust || opt_resize) {
var overflowX = goog.positioning.Overflow.ADJUST_X_EXCEPT_OFFSCREEN;
var overflowY = opt_resize ?
goog.positioning.Overflow.RESIZE_HEIGHT :
goog.positioning.Overflow.ADJUST_Y_EXCEPT_OFFSCREEN;
this.setLastResortOverflow(overflowX | overflowY);
}
};
goog.inherits(goog.positioning.MenuAnchoredPosition,
goog.positioning.AnchoredViewportPosition);
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