| // 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) |
| * @author chrishenry@google.com (Chris Henry) |
| */ |
| |
| 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'); |
| |
| |
| |
| /** |
| * 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) { |
| /** |
| * 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) { |
| 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); |
| }; |