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August 29, 2015 14:04
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Just a little widget to handle pagination in one of the projects of the company I work for. May be useful or not, idk.
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/*===================================================== | |
* | |
* jQuery Sitef Paginator | |
* Inform Sistemas LTDA. | |
* | |
======================================================*/ | |
;(function ($, window, document, undefined) { | |
$.widget("sitef.paginator", { | |
_create: function () { | |
this._load = this.options.resource; | |
var html = '<select class="input-sm" id="page_select" dir="rtl"></select><button id="first_page" class="btn btn-sm"><i class="glyphicon glyphicon-fast-backward"></i></button> <button id="previous_page" class="btn btn-sm" style="direction: rtl; unicode-bidi: bidi-override;"><i class="glyphicon glyphicon-step-backward"></i></button> <label for="page_input">Página:</label> <input id="page_input" type="text" size="2" class="input-sm" value="1"/> de <span id="total_of_pages"></span> <button id="next_page" class="btn btn-sm" ><i class="glyphicon glyphicon-step-forward"></i></button><button id="last_page" class="btn btn-sm"><i class="glyphicon glyphicon-fast-forward"></i></button>'; | |
this.element.html(html); | |
this.element.addClass('sitef-paginator'); | |
this._elements = { | |
nextPageButton: this.element.find('#next_page'), | |
previousPageButton: this.element.find('#previous_page'), | |
firstPageButton: this.element.find('#first_page'), | |
lastPageButton: this.element.find('#last_page'), | |
pageSelector: this.element.find('#page_select'), | |
pageInput: this.element.find('#page_input'), | |
totalOfPagesSpan: this.element.find('#total_of_pages') | |
}; | |
this._vars = { | |
page: '', | |
currentPageNumber: 1, | |
synchronous: false | |
}; | |
this._bindEvents(); | |
this._setPage(this._vars.currentPageNumber); | |
this._updateNavigation(); | |
}, | |
_paginate: function () { | |
this._vars.currentPageNumber = this._elements.pageInput.val(); | |
this._vars.page = this._load(this._vars.currentPageNumber, this._vars.synchronous); | |
if (!this._vars.page) { | |
throw 'error'; | |
} | |
this._elements.totalOfPagesSpan.text(this._vars.page.totalOfPages); | |
this._updateButtons(); | |
this._elements.pageSelector.val(this._vars.currentPageNumber); | |
}, | |
_setPage: function(pageNumber) { | |
this._elements.pageInput.val(pageNumber); | |
this._elements.pageInput.trigger('change'); | |
}, | |
_updateButtons: function () { | |
if (this._vars.page.hasNext) { | |
this._elements.nextPageButton.prop('disabled', false); | |
this._elements.lastPageButton.prop('disabled', false); | |
} else { | |
this._elements.nextPageButton.prop('disabled', true); | |
this._elements.lastPageButton.prop('disabled', true); | |
} | |
if (this._vars.page.hasPrevious) { | |
this._elements.previousPageButton.prop('disabled', false); | |
this._elements.firstPageButton.prop('disabled', false); | |
} else { | |
this._elements.previousPageButton.prop('disabled', true); | |
this._elements.firstPageButton.prop('disabled', true); | |
} | |
}, | |
_updateNavigation: function () { | |
var option = '<option value=""></option>'; | |
for (var int = 0; int < this._vars.page.totalOfPages; int++) { | |
var opt = $(option).val(int+1).text(int+1); | |
this._elements.pageSelector.append(opt); | |
} | |
}, | |
destroy: function () { | |
$.Widget.prototype.destroy.call(this); | |
}, | |
_bindEvents: function () { | |
this.element.on('change', '#page_input', {context: this}, function(event) { | |
event.data.context._paginate(); | |
}); | |
this.element.on('click', '#first_page', {context: this}, function(event) { | |
event.preventDefault(); | |
event.data.context._setPage(1); | |
}); | |
this.element.on('click', '#last_page', {context: this}, function(event) { | |
event.preventDefault(); | |
var self = event.data.context; | |
self._setPage(self._vars.page.totalOfPages); | |
}); | |
this.element.on('click', '#next_page', {context: this}, function(event) { | |
event.preventDefault(); | |
var self = event.data.context; | |
self._setPage(parseInt(self._vars.currentPageNumber) + 1); | |
}); | |
this.element.on('click', '#previous_page', {context: this}, function(event) { | |
event.preventDefault(); | |
var self = event.data.context; | |
self._setPage(parseInt(self._vars.currentPageNumber) - 1); | |
}); | |
this.element.on('change', '#page_select', {context: this}, function(event) { | |
event.preventDefault(); | |
var self = event.data.context; | |
self._setPage(self._elements.pageSelector.val()); | |
}); | |
}, | |
paginate: function (page, synchronous) { | |
this._vars.synchronous = synchronous; | |
if (page === undefined) { | |
this._setPage(1); | |
} else { | |
if (parseInt(page) <= parseInt(this._vars.page.totalOfPages) && parseInt(page) > 0) { | |
this._setPage(page); | |
} else { | |
throw 'Error: invalid page number'; | |
} | |
} | |
this._vars.synchronous = false; | |
} | |
}); | |
})(jQuery, window, document); |
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