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/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
define([
'Magento_Ui/js/grid/listing',
'Magento_Ui/js/lib/view/utils/raf',
'jquery',
'ko',
'underscore'
], function (Listing, raf, $, ko, _) {
'use strict';
return Listing.extend({
defaults: {
template: 'ui/grid/masonry',
imports: {
rows: '${ $.provider }:data.items',
errorMessage: '${ $.provider }:data.errorMessage'
},
listens: {
rows: 'initComponent'
},
/**
* Images container id
* @param string
*/
containerId: null,
/**
* Minimum aspect ratio for each image
* @param int
*/
minRatio: null,
/**
* Container width
* @param int
*/
containerWidth: window.innerWidth,
/**
* Margin between images
* @param int
*/
imageMargin: 20,
/**
* Maximum image height value
* @param int
*/
maxImageHeight: 240,
/**
* The value is minimum image width to height ratio when container width is less than the key
* @param {Object}
*/
containerWidthToMinRatio: {
640: 3,
1280: 5,
1920: 8
},
/**
* Default minimal image width to height ratio.
* Applied when container width is greater than max width in the containerWidthToMinRatio matrix.
* @param int
*/
defaultMinRatio: 10,
/**
* Layout update FPS during window resizing
*/
refreshFPS: 60
},
/**
* Init observable variables
* @return {Object}
*/
initObservable: function () {
this._super()
.observe([
'rows',
'errorMessage'
]);
return this;
},
/**
* Init component handler
* @param {Object} rows
* @return {Object}
*/
initComponent: function (rows) {
if (!rows.length) {
return;
}
this.imageMargin = parseInt(this.imageMargin, 10);
this.container = $('[data-id="' + this.containerId + '"]')[0];
this.setLayoutStyles();
this.setEventListener();
return this;
},
/**
* Set event listener to track resize event
*/
setEventListener: function () {
window.addEventListener('resize', function () {
this.updateStyles();
}.bind(this));
},
/**
* Updates styles for component.
*/
updateStyles: function () {
raf(function () {
this.containerWidth = window.innerWidth;
this.setLayoutStyles();
}.bind(this), this.refreshFPS);
},
/**
* Set layout styles inside the container
*/
setLayoutStyles: function () {
var containerWidth = parseInt(this.container.clientWidth, 10),
rowImages = [],
ratio = 0,
rowHeight = 0,
calcHeight = 0,
isLastRow = false,
rowNumber = 1;
this.setMinRatio();
this.rows().forEach(function (image, index) {
ratio += parseFloat((image.width / image.height).toFixed(2));
rowImages.push(image);
if (ratio < this.minRatio && index + 1 !== this.rows().length) {
// Row has more space for images and the image is not the last one - proceed to the next iteration
return;
}
ratio = Math.max(ratio, this.minRatio);
calcHeight = (containerWidth - this.imageMargin * rowImages.length) / ratio;
rowHeight = calcHeight < this.maxImageHeight ? calcHeight : this.maxImageHeight;
isLastRow = index + 1 === this.rows().length;
this.assignImagesToRow(rowImages, rowNumber, rowHeight, isLastRow);
rowImages = [];
ratio = 0;
rowNumber++;
}.bind(this));
},
/**
* Apply styles, css classes and add properties for images in the row
*
* @param {Object[]} images
* @param {Number} rowNumber
* @param {Number} rowHeight
* @param {Boolean} isLastRow
*/
assignImagesToRow: function (images, rowNumber, rowHeight, isLastRow) {
var imageWidth;
images.forEach(function (img) {
imageWidth = rowHeight * (img.width / img.height).toFixed(2);
this.setImageStyles(img, imageWidth, rowHeight);
this.setImageClass(img, {
bottom: isLastRow
});
img.rowNumber = rowNumber;
}.bind(this));
images[0].firstInRow = true;
images[images.length - 1].lastInRow = true;
},
/**
* Wait for container to initialize
*/
waitForContainer: function (callback) {
if (typeof this.container === 'undefined') {
setTimeout(function () {
this.waitForContainer(callback);
}.bind(this), 500);
} else {
setTimeout(callback, 0);
}
},
/**
* Set layout styles when container element is loaded.
*/
setLayoutStylesWhenLoaded: function () {
this.waitForContainer(function () {
this.setLayoutStyles();
}.bind(this));
},
/**
* Set styles for every image in layout
*
* @param {Object} img
* @param {Number} width
* @param {Number} height
*/
setImageStyles: function (img, width, height) {
if (!img.styles) {
img.styles = ko.observable();
}
img.styles({
width: parseInt(width, 10) + 'px',
height: parseInt(height, 10) + 'px'
});
},
/**
* Set css classes to and an image
*
* @param {Object} image
* @param {Object} classes
*/
setImageClass: function (image, classes) {
if (!image.css) {
image.css = ko.observable(classes);
}
image.css(classes);
},
/**
* Set min ratio for images in layout
*/
setMinRatio: function () {
var minRatio = _.find(
this.containerWidthToMinRatio,
/**
* Find the minimal ratio for container width in the matrix
*
* @param {Number} ratio
* @param {Number} width
* @returns {Boolean}
*/
function (ratio, width) {
return this.containerWidth <= width;
},
this
);
this.minRatio = minRatio ? minRatio : this.defaultMinRatio;
},
/**
* Checks if grid has data.
*
* @returns {Boolean}
*/
hasData: function () {
return !!this.rows() && !!this.rows().length;
},
/**
* Returns error message returned by the data provider
*
* @returns {String|null}
*/
getErrorMessageUnsanitizedHtml: function () {
return this.errorMessage();
}
});
});