72 lines
2.9 KiB
JavaScript
72 lines
2.9 KiB
JavaScript
// Copyright 2006 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @fileoverview Anchored viewport positioning class with both adjust and
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* resize options for the popup.
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*
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* @author eae@google.com (Emil A Eklund)
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* @author tildahl@google.com (Michael Tildahl)
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*/
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goog.provide('goog.positioning.MenuAnchoredPosition');
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goog.require('goog.math.Box');
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goog.require('goog.math.Size');
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goog.require('goog.positioning');
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goog.require('goog.positioning.AnchoredViewportPosition');
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goog.require('goog.positioning.Corner');
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goog.require('goog.positioning.Overflow');
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/**
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* Encapsulates a popup position where the popup is anchored at a corner of
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* an element. The positioning behavior changes based on the values of
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* opt_adjust and opt_resize.
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*
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* When using this positioning object it's recommended that the movable element
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* be absolutely positioned.
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*
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* @param {Element} anchorElement Element the movable element should be
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* anchored against.
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* @param {goog.positioning.Corner} corner Corner of anchored element the
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* movable element should be positioned at.
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* @param {boolean=} opt_adjust Whether the positioning should be adjusted until
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* the element fits inside the viewport even if that means that the anchored
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* corners are ignored.
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* @param {boolean=} opt_resize Whether the positioning should be adjusted until
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* the element fits inside the viewport on the X axis and its height is
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* resized so if fits in the viewport. This take precedence over opt_adjust.
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* @constructor
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* @extends {goog.positioning.AnchoredViewportPosition}
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*/
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goog.positioning.MenuAnchoredPosition = function(anchorElement,
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corner,
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opt_adjust,
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opt_resize) {
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goog.positioning.AnchoredViewportPosition.call(this, anchorElement, corner,
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opt_adjust || opt_resize);
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if (opt_adjust || opt_resize) {
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var overflowX = goog.positioning.Overflow.ADJUST_X_EXCEPT_OFFSCREEN;
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var overflowY = opt_resize ?
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goog.positioning.Overflow.RESIZE_HEIGHT :
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goog.positioning.Overflow.ADJUST_Y_EXCEPT_OFFSCREEN;
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this.setLastResortOverflow(overflowX | overflowY);
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}
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};
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goog.inherits(goog.positioning.MenuAnchoredPosition,
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goog.positioning.AnchoredViewportPosition);
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