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drupalcampbristol/core/modules/outside_in/js/offcanvas.js

135 lines
3.9 KiB
JavaScript

/**
* @file
* Drupal's off-canvas library.
*
* @todo This functionality should extracted into a new core library or a part
* of the current drupal.dialog.ajax library.
* https://www.drupal.org/node/2784443
*/
(function ($, Drupal, debounce, displace) {
'use strict';
/**
* The edge of the screen that the dialog should appear on.
*
* @type {string}
*/
var edge = document.documentElement.dir === 'rtl' ? 'left' : 'right';
var $mainCanvasWrapper = $('#main-canvas-wrapper');
/**
* Resets the size of the dialog.
*
* @param {jQuery.Event} event
* The event triggered.
*/
function resetSize(event) {
var offsets = displace.offsets;
var $element = event.data.$element;
var $widget = $element.dialog('widget');
var adjustedOptions = {
// @see http://api.jqueryui.com/position/
position: {
my: edge + ' top',
at: edge + ' top' + (offsets.top !== 0 ? '+' + offsets.top : ''),
of: window
}
};
$widget.css({
position: 'fixed',
height: ($(window).height() - (offsets.top + offsets.bottom)) + 'px'
});
$element
.dialog('option', adjustedOptions)
.trigger('dialogContentResize.outsidein');
}
/**
* Adjusts the dialog on resize.
*
* @param {jQuery.Event} event
* The event triggered.
*/
function handleDialogResize(event) {
var $element = event.data.$element;
var $widget = $element.dialog('widget');
var $offsets = $widget.find('> :not(#drupal-offcanvas, .ui-resizable-handle)');
var offset = 0;
var modalHeight;
// Let scroll element take all the height available.
$element.css({height: 'auto'});
modalHeight = $widget.height();
$offsets.each(function () { offset += $(this).outerHeight(); });
// Take internal padding into account.
var scrollOffset = $element.outerHeight() - $element.height();
$element.height(modalHeight - offset - scrollOffset);
}
/**
* Adjusts the body padding when the dialog is resized.
*
* @param {jQuery.Event} event
* The event triggered.
*/
function bodyPadding(event) {
var $element = event.data.$element;
var $widget = $element.dialog('widget');
var width = $widget.outerWidth();
var mainCanvasPadding = $mainCanvasWrapper.css('padding-' + edge);
if (width !== mainCanvasPadding) {
$mainCanvasWrapper.css('padding-' + edge, width + 'px');
$widget.attr('data-offset-' + edge, width);
displace();
}
}
$(window).on({
'dialog:aftercreate': function (event, dialog, $element, settings) {
if ($element.is('#drupal-offcanvas')) {
var eventData = {settings: settings, $element: $element};
$('.ui-dialog-offcanvas, .ui-dialog-offcanvas .ui-dialog-titlebar').toggleClass('ui-dialog-empty-title', !settings.title);
$element
.on('dialogresize.outsidein', eventData, debounce(bodyPadding, 100))
.on('dialogContentResize.outsidein', eventData, handleDialogResize)
.trigger('dialogresize.outsidein');
$element.dialog('widget').attr('data-offset-' + edge, '');
$(window)
.on('resize.outsidein scroll.outsidein', eventData, debounce(resetSize, 100))
.trigger('resize.outsidein');
}
},
'dialog:beforecreate': function (event, dialog, $element, settings) {
if ($element.is('#drupal-offcanvas')) {
// @see http://api.jqueryui.com/position/
settings.position = {
my: 'left top',
at: edge + ' top',
of: window
};
settings.dialogClass = 'ui-dialog-offcanvas';
}
},
'dialog:beforeclose': function (event, dialog, $element) {
if ($element.is('#drupal-offcanvas')) {
$(document).off('.outsidein');
$(window).off('.outsidein');
$mainCanvasWrapper.css('padding-' + edge, 0);
}
}
});
})(jQuery, Drupal, Drupal.debounce, Drupal.displace);