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/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
/* eslint-disable no-undef */
define([
'jquery',
'underscore',
'Magento_Ui/js/grid/columns/column',
'Magento_Ui/js/lib/key-codes'
], function ($, _, Column, keyCodes) {
'use strict';
return Column.extend({
defaults: {
bodyTmpl: 'ui/grid/columns/image-preview',
previewImageSelector: '[data-image-preview]',
visibleRecord: null,
height: 0,
displayedRecord: {},
lastOpenedImage: false,
fields: {
previewUrl: 'preview_url',
title: 'title'
},
modules: {
masonry: '${ $.parentName }',
thumbnailComponent: '${ $.parentName }.thumbnail_url'
},
statefull: {
sorting: true,
lastOpenedImage: true
},
listens: {
'${ $.provider }:params.filters': 'hide',
'${ $.provider }:params.search': 'hide',
'${ $.provider }:params.paging': 'hide',
'${ $.provider }:data.items': 'updateDisplayedRecord'
},
exports: {
height: '${ $.parentName }.thumbnail_url:previewHeight'
}
},
/**
* Initialize image preview component
*
* @returns {Object}
*/
initialize: function () {
this._super();
$(document).on('keydown', this.handleKeyDown.bind(this));
this.lastOpenedImage.subscribe(function (newValue) {
if (newValue === false && _.isNull(this.visibleRecord())) {
return;
}
if (newValue === this.visibleRecord()) {
return;
}
if (newValue === false) {
this.hide();
return;
}
this.show(this.masonry().rows()[newValue]);
}.bind(this));
return this;
},
/**
* Init observable variables
* @return {Object}
*/
initObservable: function () {
this._super()
.observe([
'visibleRecord',
'height',
'displayedRecord',
'lastOpenedImage'
]);
return this;
},
/**
* Next image preview
*
* @param {Object} record
*/
next: function (record) {
var recordToShow;
if (record._rowIndex + 1 === this.masonry().rows().length) {
return;
}
recordToShow = this.getRecord(record._rowIndex + 1);
recordToShow.rowNumber = record.lastInRow ? record.rowNumber + 1 : record.rowNumber;
this.show(recordToShow);
},
/**
* Previous image preview
*
* @param {Object} record
*/
prev: function (record) {
var recordToShow;
if (record._rowIndex === 0) {
return;
}
recordToShow = this.getRecord(record._rowIndex - 1);
recordToShow.rowNumber = record.firstInRow ? record.rowNumber - 1 : record.rowNumber;
this.show(recordToShow);
},
/**
* Get record
*
* @param {Integer} recordIndex
*
* @return {Object}
*/
getRecord: function (recordIndex) {
return this.masonry().rows()[recordIndex];
},
/**
* Set selected row id
*
* @param {Number} rowId
* @private
*/
_selectRow: function (rowId) {
this.thumbnailComponent().previewRowId(rowId);
},
/**
* Show image preview
*
* @param {Object} record
*/
show: function (record) {
if (record._rowIndex === this.visibleRecord()) {
this.hide();
return;
}
this.hide();
this.displayedRecord(record);
this._selectRow(record.rowNumber || null);
this.visibleRecord(record._rowIndex);
this.lastOpenedImage(record._rowIndex);
this.updateImageData();
},
/**
* Update image data when image preview is opened
*/
updateImageData: function () {
var img = $(this.previewImageSelector + ' img'), self;
if (!img.get(0)) {
setTimeout(function () {
this.updateImageData();
}.bind(this), 100);
} else if (img.get(0).complete) {
this.updateHeight();
this.scrollToPreview();
} else {
self = this;
img.on('load', function () {
self.updateHeight();
self.scrollToPreview();
});
}
},
/**
* Update preview displayed record data from the new items data if the preview is expanded
*
* @param {Array} items
*/
updateDisplayedRecord: function (items) {
if (!_.isNull(this.visibleRecord())) {
this.displayedRecord(items[this.visibleRecord()]);
}
},
/**
* Update image preview section height
*/
updateHeight: function () {
this.height($(this.previewImageSelector).height() + 'px');
},
/**
* Close image preview
*/
hide: function () {
this.lastOpenedImage(false);
this.visibleRecord(null);
this.height(0);
this._selectRow(null);
},
/**
* Returns visibility for given record.
*
* @param {Object} record
* @return {*|bool}
*/
isVisible: function (record) {
if (this.lastOpenedImage() === record._rowIndex &&
this.visibleRecord() === null
) {
this.show(record);
}
return this.visibleRecord() === record._rowIndex || false;
},
/**
* Returns preview image url for a given record.
*
* @param {Object} record
* @return {String}
*/
getUrl: function (record) {
return record[this.fields.previewUrl];
},
/**
* Returns image title for a given record.
*
* @param {Object} record
* @return {String}
*/
getTitle: function (record) {
return record[this.fields.title];
},
/**
* Get styles for preview
*
* @returns {Object}
*/
getStyles: function () {
return {
'margin-top': '-' + this.height()
};
},
/**
* Scroll to preview window
*/
scrollToPreview: function () {
$(this.previewImageSelector).get(0).scrollIntoView({
behavior: 'smooth',
block: 'center',
inline: 'nearest'
});
},
/**
* Handle keyboard navigation for image preview
*
* @param {Object} e
*/
handleKeyDown: function (e) {
var key = keyCodes[e.keyCode];
if (this.visibleRecord() !== null && document.activeElement.tagName !== 'INPUT') {
if (key === 'pageLeftKey') {
this.prev(this.displayedRecord());
} else if (key === 'pageRightKey') {
this.next(this.displayedRecord());
}
}
}
});
});