ui/login/login_ui_tools.js

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

/**
 * @fileoverview JS helpers used on login.
 */

cr.define('cr.ui.LoginUITools', function() {
  return {
    /**
     * Computes max-height for an element so that it doesn't overlap shelf.
     * @param {element} DOM element
     * @param {wholeWindow} Whether the element can go outside outer-container.
     */
    getMaxHeightBeforeShelfOverlapping : function(element, wholeWindow) {
      var maxAllowedHeight =
          $('outer-container').offsetHeight -
          element.getBoundingClientRect().top -
          parseInt(window.getComputedStyle(element).marginTop) -
          parseInt(window.getComputedStyle(element).marginBottom);
      if (wholeWindow) {
        maxAllowedHeight +=
           parseInt(window.getComputedStyle($('outer-container')).bottom);
      }
      return maxAllowedHeight;
    },

    /**
     * Computes max-width for an element so that it does fit the
     * outer-container.
     * @param {element} DOM element
     */
    getMaxWidthToFit : function(element) {
      var maxAllowedWidth =
          $('outer-container').offsetWidth -
          element.getBoundingClientRect().left -
          parseInt(window.getComputedStyle(element).marginLeft) -
          parseInt(window.getComputedStyle(element).marginRight);
      return maxAllowedWidth;
    },
  }
});