148 lines
4.5 KiB
JavaScript
148 lines
4.5 KiB
JavaScript
/**
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* @file
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* Drupal's off-canvas library.
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*
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* @todo This functionality should extracted into a new core library or a part
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* of the current drupal.dialog.ajax library.
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* https://www.drupal.org/node/2784443
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*/
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(function ($, Drupal, debounce, displace) {
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'use strict';
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// The minimum width to use body displace needs to match the width at which
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// the tray will be %100 width. @see outside_in.module.css
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var minDisplaceWidth = 768;
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/**
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* The edge of the screen that the dialog should appear on.
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*
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* @type {string}
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*/
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var edge = document.documentElement.dir === 'rtl' ? 'left' : 'right';
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var $mainCanvasWrapper = $('[data-offcanvas-main-canvas]');
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/**
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* Resets the size of the dialog.
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*
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* @param {jQuery.Event} event
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* The event triggered.
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*/
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function resetSize(event) {
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var offsets = displace.offsets;
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var $element = event.data.$element;
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var $widget = $element.dialog('widget');
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var adjustedOptions = {
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// @see http://api.jqueryui.com/position/
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position: {
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my: edge + ' top',
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at: edge + ' top' + (offsets.top !== 0 ? '+' + offsets.top : ''),
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of: window
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}
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};
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$widget.css({
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position: 'fixed',
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height: ($(window).height() - (offsets.top + offsets.bottom)) + 'px'
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});
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$element
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.dialog('option', adjustedOptions)
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.trigger('dialogContentResize.offcanvas');
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}
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/**
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* Adjusts the dialog on resize.
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*
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* @param {jQuery.Event} event
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* The event triggered.
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*/
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function handleDialogResize(event) {
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var $element = event.data.$element;
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var $widget = $element.dialog('widget');
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var $offsets = $widget.find('> :not(#drupal-offcanvas, .ui-resizable-handle)');
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var offset = 0;
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var modalHeight;
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// Let scroll element take all the height available.
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$element.css({height: 'auto'});
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modalHeight = $widget.height();
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$offsets.each(function () { offset += $(this).outerHeight(); });
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// Take internal padding into account.
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var scrollOffset = $element.outerHeight() - $element.height();
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$element.height(modalHeight - offset - scrollOffset);
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}
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/**
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* Adjusts the body padding when the dialog is resized.
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*
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* @param {jQuery.Event} event
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* The event triggered.
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*/
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function bodyPadding(event) {
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if ($('body').outerWidth() < minDisplaceWidth) {
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return;
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}
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var $element = event.data.$element;
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var $widget = $element.dialog('widget');
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var width = $widget.outerWidth();
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var mainCanvasPadding = $mainCanvasWrapper.css('padding-' + edge);
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if (width !== mainCanvasPadding) {
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$mainCanvasWrapper.css('padding-' + edge, width + 'px');
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$widget.attr('data-offset-' + edge, width);
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displace();
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}
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}
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$(window).on({
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'dialog:aftercreate': function (event, dialog, $element, settings) {
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if ($element.is('#drupal-offcanvas')) {
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var eventData = {settings: settings, $element: $element};
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$('.ui-dialog-offcanvas, .ui-dialog-offcanvas .ui-dialog-titlebar').toggleClass('ui-dialog-empty-title', !settings.title);
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$element
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.on('dialogresize.offcanvas', eventData, debounce(bodyPadding, 100))
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.on('dialogContentResize.offcanvas', eventData, handleDialogResize)
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.on('dialogContentResize.offcanvas', eventData, debounce(bodyPadding, 100))
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.trigger('dialogresize.offcanvas');
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$element.dialog('widget').attr('data-offset-' + edge, '');
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$(window)
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.on('resize.offcanvas scroll.offcanvas', eventData, debounce(resetSize, 100))
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.trigger('resize.offcanvas');
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}
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},
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'dialog:beforecreate': function (event, dialog, $element, settings) {
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if ($element.is('#drupal-offcanvas')) {
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$('body').addClass('js-tray-open');
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// @see http://api.jqueryui.com/position/
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settings.position = {
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my: 'left top',
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at: edge + ' top',
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of: window
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};
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settings.dialogClass += ' ui-dialog-offcanvas';
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// Applies initial height to dialog based on window height.
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// See http://api.jqueryui.com/dialog for all dialog options.
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settings.height = $(window).height();
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}
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},
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'dialog:beforeclose': function (event, dialog, $element) {
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if ($element.is('#drupal-offcanvas')) {
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$('body').removeClass('js-tray-open');
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$(document).off('.offcanvas');
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$(window).off('.offcanvas');
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$mainCanvasWrapper.css('padding-' + edge, 0);
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}
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}
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});
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})(jQuery, Drupal, Drupal.debounce, Drupal.displace);
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