harbor/static/resources/js/components/paginator/paginator.directive.js

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(function() {
'use strict';
angular
.module('harbor.paginator')
.directive('paginator', paginator);
PaginatorController.$inject = [];
function PaginatorController() {
var vm = this;
}
paginator.$inject = [];
function paginator() {
var directive = {
'restrict': 'E',
'templateUrl': '/static/resources/js/components/paginator/paginator.directive.html',
'scope': {
'totalCount': '@',
'pageSize': '@',
'page': '=',
'displayCount': '@'
},
'link': link,
'controller': PaginatorController,
'controllerAs': 'vm',
'bindToController': true
};
return directive;
function link(scope, element, attrs, ctrl) {
scope.$watch('vm.page', function(current) {
if(current) {
ctrl.page = current;
togglePageButton();
}
});
var tc;
scope.$watch('vm.totalCount', function(current) {
if(current) {
var totalCount = current;
element.find('ul li:first a').off('click');
element.find('ul li:last a').off('click');
tc = new TimeCounter();
console.log('Total Count:' + totalCount + ', Page Size:' + ctrl.pageSize + ', Display Count:' + ctrl.displayCount + ', Page:' + ctrl.page);
ctrl.buttonCount = Math.ceil(totalCount / ctrl.pageSize);
if(ctrl.buttonCount <= ctrl.displayCount) {
tc.setMaximum(1);
}else{
tc.setMaximum(Math.ceil(ctrl.buttonCount / ctrl.displayCount));
}
element.find('ul li:first a').on('click', previous);
element.find('ul li:last a').on('click', next);
drawButtons(tc.getTime());
togglePrevious(tc.canDecrement());
toggleNext(tc.canIncrement());
togglePageButton();
}
});
var TimeCounter = function() {
this.time = 0;
this.minimum = 0;
this.maximum = 0;
}
TimeCounter.prototype.setMaximum = function(maximum) {
this.maximum = maximum;
};
TimeCounter.prototype.increment = function() {
if(this.time < this.maximum) {
++this.time;
if((ctrl.page % ctrl.displayCount) != 0) {
ctrl.page = this.time * ctrl.displayCount;
}
++ctrl.page;
}
scope.$apply();
};
TimeCounter.prototype.canIncrement = function() {
if(this.time + 1 < this.maximum) {
return true;
}
return false;
};
TimeCounter.prototype.decrement = function() {
if(this.time > this.minimum) {
if(this.time === 0) {
ctrl.page = ctrl.displayCount;
}else if((ctrl.page % ctrl.displayCount) != 0) {
ctrl.page = this.time * ctrl.displayCount;
}
--this.time;
--ctrl.page;
}
scope.$apply();
};
TimeCounter.prototype.canDecrement = function() {
if(this.time > this.minimum) {
return true;
}
return false;
};
TimeCounter.prototype.getTime = function() {
return this.time;
};
function drawButtons(time) {
element.find('li[tag="pagination-button"]').remove();
var buttons = [];
for(var i = 1; i <= ctrl.displayCount; i++) {
var displayNumber = ctrl.displayCount * time + i;
if(displayNumber <= ctrl.buttonCount) {
buttons.push('<li tag="pagination-button"><a href="javascript:void(0)" page="' + displayNumber + '">' + displayNumber + '<span class="sr-only"></span></a></li>');
}
}
$(buttons.join(''))
.insertAfter(element.find('ul li:eq(0)')).end()
.on('click', buttonClickHandler);
}
function togglePrevious(status) {
if(status){
element.find('ul li:first').removeClass('disabled');
}else{
element.find('ul li:first').addClass('disabled');
}
}
function toggleNext(status) {
if(status) {
element.find('ul li:last').removeClass('disabled');
}else{
element.find('ul li:last').addClass('disabled');
}
}
function buttonClickHandler(e) {
ctrl.page = $(e.target).attr('page');
togglePageButton();
togglePrevious(tc.canDecrement());
toggleNext(tc.canIncrement());
scope.$apply();
}
function togglePageButton() {
element.find('li[tag="pagination-button"]').removeClass('active');
element.find('li[tag="pagination-button"] a[page="' + ctrl.page + '"]').parent().addClass('active');
}
function previous() {
if(tc.canDecrement()) {
tc.decrement();
drawButtons(tc.getTime());
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togglePageButton();
togglePrevious(tc.canDecrement());
toggleNext(tc.canIncrement());
}
scope.$apply();
}
function next() {
if(tc.canIncrement()) {
tc.increment();
drawButtons(tc.getTime());
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togglePageButton();
togglePrevious(tc.canDecrement());
toggleNext(tc.canIncrement());
}
scope.$apply();
}
}
}
})();