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define(['jquery', 'underscore', 'backbone', 'pim/form'],
function($, _, Backbone, BaseForm) {
'use strict';
/**
* Datagrid pagination widget
*
* @export oro/datagrid/pagination
* @class oro.datagrid.Pagination
* @extends BaseForm
*/
return BaseForm.extend({
/** @property */
tagName: 'div',
/** @property */
className: 'AknGridToolbar-center',
/** @property */
windowSize: 10,
/** @property */
enabled: true,
/** @property */
hidden: false,
/** @property */
template: _.template(
'<label>Page:</label>' +
'<ul class="AknPagination-icons">' +
'<% _.each(handles, function (handle) { %>' +
'<li class="AknPagination-item <% if (handle.className) { %><%= handle.className %><% } %>">' +
'<a href="#" class="AknPagination-link" <% if (handle.title) {%> title="<%= handle.title %>"<% } %>>' +
'<% if (handle.wrapClass) {%>' +
'<i <% if (handle.wrapClass) { %>class="<%= handle.wrapClass %>"<% } %>>' +
'<%= handle.label %>' +
'</i>' +
'<% } else { %>' +
'<%= handle.label %>' +
'<% } %>' +
'</a>' +
'</li>' +
'<% }); %>' +
'</ul>' +
'<label>of <%= state.totalPages ? state.totalPages : 1 %> | <%= state.totalRecords %> records</label>'
),
/** @property */
events: {
"click a": "onChangePage"
},
/** @property */
fastForwardHandleConfig: {
prev: {
label: '',
wrapClass: 'icon-chevron-left hide-text'
},
next: {
label: '',
wrapClass: 'icon-chevron-right hide-text'
}
},
/**
* Initializer.
*
* @param {Object} options
* @param {Backbone.Collection} options.collection
* @param {Object} options.fastForwardHandleConfig
* @param {Number} options.windowSize
*/
initialize: function (options) {
options = options || {};
Iif (!options.collection) {
throw new TypeError("'collection' is required");
}
this.collection = options.collection;
this.listenTo(this.collection, "add", this.render);
this.listenTo(this.collection, "remove", this.render);
this.listenTo(this.collection, "reset", this.render);
this.hidden = options.hide == true;
BaseForm.prototype.initialize.call(this, options);
},
/**
* Disable pagination
*
* @return {*}
*/
disable: function() {
this.enabled = false;
this.render();
return this;
},
/**
* Enable pagination
*
* @return {*}
*/
enable: function() {
this.enabled = true;
this.render();
return this;
},
/**
* jQuery event handler for the page handlers. Goes to the right page upon clicking.
*
* @param {Event} e
* @protected
*/
onChangePage: function (e) {
e.preventDefault();
Iif (!this.enabled) {
return;
}
const label = $(e.target).text();
const ffConfig = this.fastForwardHandleConfig;
const collection = this.collection;
Eif (ffConfig) {
const prevLabel = _.has(ffConfig.prev, 'label') ? ffConfig.prev.label : undefined;
const nextLabel = _.has(ffConfig.next, 'label') ? ffConfig.next.label : undefined;
switch (label) {
case prevLabel:
if (collection.hasPrevious()) collection.getPreviousPage();
return;
case nextLabel:
if (collection.hasNext()) collection.getNextPage();
return;
}
}
const state = collection.state;
const pageIndex = label * 1 - state.firstPage;
collection.getPage(state.firstPage === 0 ? pageIndex : pageIndex + 1);
},
/**
* Internal method to create a list of page handle objects for the template
* to render them.
*
* @return {Array.<Object>} an array of page handle objects hashes
*/
makeHandles: function (handles) {
handles = handles || [];
var collection = this.collection;
var state = collection.state;
// convert all indices to 0-based here
var lastPage = state.lastPage ? state.lastPage : state.firstPage;
lastPage = state.firstPage === 0 ? lastPage : lastPage - 1;
var currentPage = state.firstPage === 0 ? state.currentPage : state.currentPage - 1;
var windowStart = Math.floor(currentPage / this.windowSize) * this.windowSize;
var windowEnd = windowStart + this.windowSize;
windowEnd = windowEnd <= lastPage ? windowEnd : lastPage + 1;
if (collection.mode !== "infinite") {
for (var i = windowStart; i < windowEnd; i++) {
handles.push({
label: i + 1,
title: "No. " + (i + 1),
className: currentPage === i ? "active" : undefined
});
}
}
var ffConfig = this.fastForwardHandleConfig || {};
if (ffConfig.prev) {
handles.unshift({
label: _.has(ffConfig.prev, 'label') ? ffConfig.prev.label : undefined,
wrapClass: _.has(ffConfig.prev, 'wrapClass') ? ffConfig.prev.wrapClass : undefined,
className: collection.hasPrevious() ? undefined : 'AknActionButton--disabled'
});
}
if (ffConfig.next) {
handles.push({
label: _.has(ffConfig.next, 'label') ? ffConfig.next.label : undefined,
wrapClass: _.has(ffConfig.next, 'wrapClass') ? ffConfig.next.wrapClass : undefined,
className: collection.hasNext() ? void 0 : 'AknActionButton--disabled'
});
}
return handles;
},
/**
* Render pagination
*
* @return {*}
*/
renderPagination: function() {
this.$el.empty();
var state = this.collection.state;
this.$el.append($(this.template({
disabled: !this.enabled || !state.totalRecords,
handles: this.makeHandles(),
state: state
})));
Iif (this.hidden) {
this.$el.hide();
}
return this;
}
});
});
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