109 lines
3.8 KiB
JavaScript
109 lines
3.8 KiB
JavaScript
/**
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* @file
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* Positioning extensions for dialogs.
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*/
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/**
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* Triggers when content inside a dialog changes.
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*
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* @event dialogContentResize
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*/
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(function ($, Drupal, drupalSettings, debounce, displace) {
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// autoResize option will turn off resizable and draggable.
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drupalSettings.dialog = $.extend({ autoResize: true, maxHeight: '95%' }, drupalSettings.dialog);
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/**
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* Position the dialog's center at the center of displace.offsets boundaries.
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*
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* @function Drupal.dialog~resetPosition
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*
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* @param {object} options
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* Options object.
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*
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* @return {object}
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* Altered options object.
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*/
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function resetPosition(options) {
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const offsets = displace.offsets;
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const left = offsets.left - offsets.right;
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const top = offsets.top - offsets.bottom;
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const leftString = `${(left > 0 ? '+' : '-') + Math.abs(Math.round(left / 2))}px`;
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const topString = `${(top > 0 ? '+' : '-') + Math.abs(Math.round(top / 2))}px`;
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options.position = {
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my: `center${left !== 0 ? leftString : ''} center${top !== 0 ? topString : ''}`,
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of: window,
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};
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return options;
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}
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/**
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* Resets the current options for positioning.
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*
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* This is used as a window resize and scroll callback to reposition the
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* jQuery UI dialog. Although not a built-in jQuery UI option, this can
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* be disabled by setting autoResize: false in the options array when creating
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* a new {@link Drupal.dialog}.
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*
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* @function Drupal.dialog~resetSize
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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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* @fires event:dialogContentResize
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*/
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function resetSize(event) {
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const positionOptions = ['width', 'height', 'minWidth', 'minHeight', 'maxHeight', 'maxWidth', 'position'];
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let adjustedOptions = {};
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let windowHeight = $(window).height();
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let option;
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let optionValue;
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let adjustedValue;
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for (let n = 0; n < positionOptions.length; n++) {
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option = positionOptions[n];
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optionValue = event.data.settings[option];
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if (optionValue) {
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// jQuery UI does not support percentages on heights, convert to pixels.
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if (typeof optionValue === 'string' && /%$/.test(optionValue) && /height/i.test(option)) {
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// Take offsets in account.
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windowHeight -= displace.offsets.top + displace.offsets.bottom;
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adjustedValue = parseInt(0.01 * parseInt(optionValue, 10) * windowHeight, 10);
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// Don't force the dialog to be bigger vertically than needed.
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if (option === 'height' && event.data.$element.parent().outerHeight() < adjustedValue) {
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adjustedValue = 'auto';
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}
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adjustedOptions[option] = adjustedValue;
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}
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}
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}
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// Offset the dialog center to be at the center of Drupal.displace.offsets.
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if (!event.data.settings.modal) {
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adjustedOptions = resetPosition(adjustedOptions);
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}
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event.data.$element
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.dialog('option', adjustedOptions)
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.trigger('dialogContentResize');
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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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const autoResize = debounce(resetSize, 20);
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const eventData = { settings, $element };
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if (settings.autoResize === true || settings.autoResize === 'true') {
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$element
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.dialog('option', { resizable: false, draggable: false })
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.dialog('widget').css('position', 'fixed');
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$(window)
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.on('resize.dialogResize scroll.dialogResize', eventData, autoResize)
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.trigger('resize.dialogResize');
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$(document).on('drupalViewportOffsetChange.dialogResize', eventData, autoResize);
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}
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},
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'dialog:beforeclose': function (event, dialog, $element) {
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$(window).off('.dialogResize');
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$(document).off('.dialogResize');
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},
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});
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}(jQuery, Drupal, drupalSettings, Drupal.debounce, Drupal.displace));
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