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/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
/**
* @api
*/
define([
'ko',
'jquery',
'underscore',
'uiElement',
'Magento_Ui/js/lib/view/utils/async'
], function (ko, $, _, Element) {
'use strict';
var transformProp;
/**
* Get element context
*/
function getContext(elem) {
return ko.contextFor(elem);
}
/**
* Defines supported css 'transform' property.
*
* @returns {String|Undefined}
*/
transformProp = (function () {
var style = document.createElement('div').style,
base = 'Transform',
vendors = ['webkit', 'moz', 'ms', 'o'],
vi = vendors.length,
property;
if (typeof style.transform !== 'undefined') {
return 'transform';
}
while (vi--) {
property = vendors[vi] + base;
if (typeof style[property] !== 'undefined') {
return property;
}
}
})();
return Element.extend({
defaults: {
separatorsClass: {
top: '_dragover-top',
bottom: '_dragover-bottom'
},
step: 'auto',
tableClass: 'table.admin__dynamic-rows',
recordsCache: [],
draggableElement: {},
draggableElementClass: '_dragged',
elemPositions: [],
listens: {
'${ $.recordsProvider }:elems': 'setCacheRecords'
},
modules: {
parentComponent: '${ $.recordsProvider }'
}
},
/**
* Initialize component
*
* @returns {Object} Chainable.
*/
initialize: function () {
_.bindAll(
this,
'mousemoveHandler',
'mouseupHandler'
);
this._super()
.body = $('body');
return this;
},
/**
* Calls 'initObservable' of parent, initializes 'options' and 'initialOptions'
* properties, calls 'setOptions' passing options to it
*
* @returns {Object} Chainable.
*/
initObservable: function () {
this._super()
.observe([
'recordsCache'
]);
return this;
},
/**
* Init listens to start drag
*
* @param {Object} elem - DOM element
* @param {Object} data - element data
*/
initListeners: function (elem, data) {
$(elem).on('mousedown touchstart', this.mousedownHandler.bind(this, data, elem));
},
/**
* Mouse down handler
*
* @param {Object} data - element data
* @param {Object} elem - element
* @param {Object} event - key down event
*/
mousedownHandler: function (data, elem, event) {
var recordNode = this.getRecordNode(elem),
originRecord = $(elem).parents('tr').eq(0),
drEl = this.draggableElement,
$table = $(elem).parents('table').eq(0),
$tableWrapper = $table.parent(),
outerHight =
$table.children('thead').outerHeight() === undefined ? 0 : $table.children('thead').outerHeight();
this.disableScroll();
$(recordNode).addClass(this.draggableElementClass);
$(originRecord).addClass(this.draggableElementClass);
this.step = this.step === 'auto' ? originRecord.height() / 2 : this.step;
drEl.originRow = originRecord;
drEl.instance = recordNode = this.processingStyles(recordNode, elem);
drEl.instanceCtx = this.getRecord(originRecord[0]);
drEl.eventMousedownY = this.getPageY(event);
drEl.minYpos =
$table.offset().top - originRecord.offset().top + outerHight;
drEl.maxYpos = drEl.minYpos + $table.children('tbody').outerHeight() - originRecord.outerHeight();
$tableWrapper.append(recordNode);
this.body.on('mousemove touchmove', this.mousemoveHandler);
this.body.on('mouseup touchend', this.mouseupHandler);
},
/**
* Mouse move handler
*
* @param {Object} event - mouse move event
*/
mousemoveHandler: function (event) {
var depEl = this.draggableElement,
pageY = this.getPageY(event),
positionY = pageY - depEl.eventMousedownY,
processingPositionY = positionY + 'px',
processingMaxYpos = depEl.maxYpos + 'px',
processingMinYpos = depEl.minYpos + 'px',
depElement = this.getDepElement(depEl.instance, positionY, depEl.originRow);
if (depElement) {
depEl.depElement ? depEl.depElement.elem.removeClass(depEl.depElement.className) : false;
depEl.depElement = depElement;
depEl.depElement.insert !== 'none' ? depEl.depElement.elem.addClass(depElement.className) : false;
} else if (depEl.depElement && depEl.depElement.insert !== 'none') {
depEl.depElement.elem.removeClass(depEl.depElement.className);
depEl.depElement.insert = 'none';
}
if (positionY > depEl.minYpos && positionY < depEl.maxYpos) {
$(depEl.instance)[0].style[transformProp] = 'translateY(' + processingPositionY + ')';
} else if (positionY < depEl.minYpos) {
$(depEl.instance)[0].style[transformProp] = 'translateY(' + processingMinYpos + ')';
} else if (positionY >= depEl.maxYpos) {
$(depEl.instance)[0].style[transformProp] = 'translateY(' + processingMaxYpos + ')';
}
},
/**
* Mouse up handler
*/
mouseupHandler: function (event) {
var depElementCtx,
drEl = this.draggableElement,
pageY = this.getPageY(event),
positionY = pageY - drEl.eventMousedownY;
this.enableScroll();
drEl.depElement = this.getDepElement(drEl.instance, positionY, this.draggableElement.originRow);
drEl.instance.remove();
if (drEl.depElement) {
depElementCtx = this.getRecord(drEl.depElement.elem[0]);
drEl.depElement.elem.removeClass(drEl.depElement.className);
if (drEl.depElement.insert !== 'none') {
this.setPosition(drEl.depElement.elem, depElementCtx, drEl);
}
}
drEl.originRow.removeClass(this.draggableElementClass);
this.body.off('mousemove touchmove', this.mousemoveHandler);
this.body.off('mouseup touchend', this.mouseupHandler);
this.draggableElement = {};
},
/**
* Set position to element
*
* @param {Object} depElem - dep element
* @param {Object} depElementCtx - dep element context
* @param {Object} dragData - data draggable element
*/
setPosition: function (depElem, depElementCtx, dragData) {
var depElemPosition = ~~depElementCtx.position;
if (dragData.depElement.insert === 'after') {
dragData.instanceCtx.position = depElemPosition + 1;
} else if (dragData.depElement.insert === 'before') {
dragData.instanceCtx.position = depElemPosition;
}
},
/**
* Get dependency element
*
* @param {Object} curInstance - current element instance
* @param {Number} position
* @param {Object} row
*/
getDepElement: function (curInstance, position, row) {
var tableSelector = this.tableClass + ' tr',
$table = $(row).parents('table').eq(0),
$curInstance = $(curInstance),
recordsCollection = $table.find('table').length ?
$table.find('tbody > tr').filter(function (index, elem) {
return !$(elem).parents(tableSelector).length;
}) :
$table.find('tbody > tr'),
curInstancePositionTop = $curInstance.position().top,
curInstancePositionBottom = curInstancePositionTop + $curInstance.height();
if (position < 0) {
return this._getDepElement(recordsCollection, 'before', curInstancePositionTop);
} else if (position > 0) {
return this._getDepElement(recordsCollection, 'after', curInstancePositionBottom);
}
},
/**
* Get dependency element private
*
* @param {Array} collection - record collection
* @param {String} position - position to add
* @param {Number} dragPosition - position drag element
*/
_getDepElement: function (collection, position, dragPosition) {
var rec,
rangeEnd,
rangeStart,
result,
className,
i = 0,
length = collection.length;
for (i; i < length; i++) {
rec = collection.eq(i);
if (position === 'before') {
rangeStart = collection.eq(i).position().top - this.step;
rangeEnd = rangeStart + this.step * 2;
className = this.separatorsClass.top;
} else if (position === 'after') {
rangeEnd = rec.position().top + rec.height() + this.step;
rangeStart = rangeEnd - this.step * 2;
className = this.separatorsClass.bottom;
}
if (dragPosition > rangeStart && dragPosition < rangeEnd) {
result = {
elem: rec,
insert: rec[0] === this.draggableElement.originRow[0] ? 'none' : position,
className: className
};
}
}
return result;
},
/**
* Set default position of draggable element
*
* @param {Object} elem - current element instance
* @param {Object} data - current element data
*/
_setDefaultPosition: function (elem, data) {
var originRecord = $(elem).parents('tr').eq(0),
position = originRecord.position();
++position.top;
$(data).css(position);
},
/**
* Set records to cache
*
* @param {Object} records - record instance
*/
setCacheRecords: function (records) {
this.recordsCache(records);
},
/**
* Set styles to draggable element
*
* @param {Object} data - data
* @param {Object} elem - elem instance
* @returns {Object} instance data.
*/
processingStyles: function (data, elem) {
var table = $(elem).parents('table').eq(0),
columns = table.find('th'),
recordColumns = $(data).find('td');
this._setDefaultPosition(elem, $(data));
this._setColumnsWidth(columns, recordColumns);
this._setTableWidth(table, $(data));
return data;
},
/**
* Set table width.
*
* @param {Object} originalTable - original record instance
* @param {Object} recordTable - draggable record instance
*/
_setTableWidth: function (originalTable, recordTable) {
recordTable.outerWidth(originalTable.outerWidth());
},
/**
* Set columns width.
*
* @param {Object} originColumns - original record instance
* @param {Object} recordColumns - draggable record instance
*/
_setColumnsWidth: function (originColumns, recordColumns) {
var i = 0,
length = originColumns.length;
for (i; i < length; i++) {
recordColumns.eq(i).outerWidth(originColumns.eq(i).outerWidth());
}
},
/**
* Get copy original record
*
* @param {Object} record - original record instance
* @returns {Object} draggable record instance
*/
getRecordNode: function (record) {
var $record = $(record),
table = $record.parents('table')[0].cloneNode(true),
$table = $(table);
$table.find('tr').remove();
$table.append($record.parents('tr')[0].cloneNode(true));
return table;
},
/**
* Get record context by element
*
* @param {Object} elem - original element
* @returns {Object} draggable record context
*/
getRecord: function (elem) {
var ctx = getContext(elem),
index = _.isFunction(ctx.$index) ? ctx.$index() : ctx.$index;
return this.recordsCache()[index];
},
/**
* Get correct page Y
*
* @param {Object} event - current event
* @returns {integer}
*/
getPageY: function (event) {
var pageY;
if (event.type.indexOf('touch') >= 0) {
if (event.originalEvent.touches[0]) {
pageY = event.originalEvent.touches[0].pageY;
} else {
pageY = event.originalEvent.changedTouches[0].pageY;
}
} else {
pageY = event.pageY;
}
return pageY;
},
/**
* Disable page scrolling
*/
disableScroll: function () {
document.body.addEventListener('touchmove', this.preventDefault, {
passive: false
});
},
/**
* Enable page scrolling
*/
enableScroll: function () {
document.body.removeEventListener('touchmove', this.preventDefault, {
passive: false
});
},
/**
* Prevent default function
*
* @param {Object} event - event object
*/
preventDefault: function (event) {
event.preventDefault();
}
});
});