angular2-pagination
Version:
Angular 2.0 pagination with support for Mongo Cursor to use with Meteor
123 lines (122 loc) • 5.77 kB
JavaScript
;
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var core_1 = require('@angular/core');
var pagination_service_1 = require("./pagination-service");
var COMPONENT_TEMPLATE = "<ul class=\"pagination\" role=\"navigation\" aria-label=\"Pagination\"> <li class=\"pagination-previous\" [class.disabled]=\"getPage() === 1\"> <a href=\"\" (click)=\"setPage($event, getPage() - 1)\" aria-label=\"Prev page\">‹</a> </li> <li [class.active]=\"getPage() === page.value\" *ngFor=\"let page of pages\"> <a href=\"\" (click)=\"setPage($event, page.value)\">{{ page.label }}</a> </li> <li class=\"pagination-next\" [class.disabled]=\"getPage() === pages.length\"> <a href=\"\" (click)=\"setPage($event, getPage() + 1)\" aria-label=\"Next page\">›</a> </li></ul>";
var PaginationControlsCmp = (function () {
function PaginationControlsCmp(_service) {
var _this = this;
this._service = _service;
this.change = new core_1.EventEmitter();
this.pages = [];
this._page = 1;
this._id = this._id || this._service.defaultId;
this._changeSub = this._service.change
.subscribe(function (id) {
if (_this._id !== id)
return;
var instance = _this._service.getInstance(_this._id);
_this.pages = _this._createPageArray(instance.currentPage, instance.itemsPerPage, instance.totalItems);
_this._setPage(instance.currentPage);
});
}
PaginationControlsCmp.prototype.ngOnDestroy = function () {
this._changeSub.unsubscribe();
};
/**
* Set the current page number.
*/
PaginationControlsCmp.prototype.setPage = function (event, page) {
event.preventDefault();
this._service.setCurrentPage(this._id, page);
};
/**
* Get the current page number.
*/
PaginationControlsCmp.prototype.getPage = function () {
return this._service.getCurrentPage(this._id);
};
PaginationControlsCmp.prototype._setPage = function (page) {
if (this._page !== page) {
this._page = page;
this.change.emit({ page: page });
}
};
/**
* Returns an array of IPage objects to use in the pagination controls.
*/
PaginationControlsCmp.prototype._createPageArray = function (currentPage, itemsPerPage, totalItems, paginationRange) {
if (paginationRange === void 0) { paginationRange = 5; }
var totalPages = Math.ceil(totalItems / itemsPerPage);
var halfWay = Math.ceil(paginationRange / 2);
var isStart = currentPage <= halfWay;
var isEnd = totalPages - halfWay < currentPage;
var isMiddle = !isStart && !isEnd;
var ellipsesNeeded = paginationRange < totalPages;
var pages = [];
var page = 1;
while (page <= totalPages && page <= paginationRange) {
var pageNumber = this.calculatePageNumber(page, currentPage, paginationRange, totalPages);
var openingEllipsesNeeded = (page === 2 && (isMiddle || isEnd));
var closingEllipsesNeeded = (page === paginationRange - 1 && (isMiddle || isStart));
var label = pageNumber.toString();
if (ellipsesNeeded && (openingEllipsesNeeded || closingEllipsesNeeded)) {
label = '...';
}
pages.push({
label: label,
value: pageNumber
});
page++;
}
return pages;
};
/**
* Given the position in the sequence of pagination links [i],
* figure out what page number corresponds to that position.
*/
PaginationControlsCmp.prototype.calculatePageNumber = function (page, currentPage, paginationRange, totalPages) {
if (page === paginationRange) {
return totalPages;
}
if (page === 1) {
return page;
}
var halfWay = Math.ceil(paginationRange / 2);
if (paginationRange < totalPages) {
if (totalPages - halfWay < currentPage) {
return totalPages - paginationRange + page;
}
if (halfWay < currentPage) {
return currentPage - halfWay + page;
}
}
return page;
};
__decorate([
core_1.Input(),
__metadata('design:type', String)
], PaginationControlsCmp.prototype, "_id", void 0);
__decorate([
core_1.Output(),
__metadata('design:type', (typeof (_a = typeof core_1.EventEmitter !== 'undefined' && core_1.EventEmitter) === 'function' && _a) || Object)
], PaginationControlsCmp.prototype, "change", void 0);
PaginationControlsCmp = __decorate([
core_1.Component({
selector: 'pagination-controls',
template: COMPONENT_TEMPLATE,
}),
__metadata('design:paramtypes', [pagination_service_1.PaginationService])
], PaginationControlsCmp);
return PaginationControlsCmp;
var _a;
}());
exports.PaginationControlsCmp = PaginationControlsCmp;