ng2-pagination/dist/pagination.service.js

Pagination for Angular

"use strict";
var core_1 = require('@angular/core');
var PaginationService = (function () {
    function PaginationService() {
        this.change = new core_1.EventEmitter();
        this.instances = {};
        this.DEFAULT_ID = 'DEFAULT_PAGINATION_ID';
    }
    PaginationService.prototype.defaultId = function () { return this.DEFAULT_ID; };
    PaginationService.prototype.register = function (instance) {
        if (!instance.id) {
            instance.id = this.DEFAULT_ID;
        }
        if (!this.instances[instance.id]) {
            this.instances[instance.id] = instance;
            this.change.emit(instance.id);
        }
        else {
            var changed = this.updateInstance(instance);
            if (changed) {
                this.change.emit(instance.id);
            }
        }
    };
    /**
     * Check each property of the instance and update any that have changed. Return
     * true if any changes were made, else return false.
     */
    PaginationService.prototype.updateInstance = function (instance) {
        var changed = false;
        for (var prop in this.instances[instance.id]) {
            if (instance[prop] !== this.instances[instance.id][prop]) {
                this.instances[instance.id][prop] = instance[prop];
                changed = true;
            }
        }
        return changed;
    };
    /**
     * Returns the current page number.
     */
    PaginationService.prototype.getCurrentPage = function (id) {
        if (this.instances[id]) {
            return this.instances[id].currentPage;
        }
    };
    /**
     * Sets the current page number.
     */
    PaginationService.prototype.setCurrentPage = function (id, page) {
        if (this.instances[id]) {
            var instance = this.instances[id];
            var maxPage = Math.ceil(instance.totalItems / instance.itemsPerPage);
            if (page <= maxPage && 1 <= page) {
                this.instances[id].currentPage = page;
                this.change.emit(id);
            }
        }
    };
    /**
     * Sets the value of instance.totalItems
     */
    PaginationService.prototype.setTotalItems = function (id, totalItems) {
        if (this.instances[id] && 0 <= totalItems) {
            this.instances[id].totalItems = totalItems;
            this.change.emit(id);
        }
    };
    /**
     * Sets the value of instance.itemsPerPage.
     */
    PaginationService.prototype.setItemsPerPage = function (id, itemsPerPage) {
        if (this.instances[id]) {
            this.instances[id].itemsPerPage = itemsPerPage;
            this.change.emit(id);
        }
    };
    /**
     * Returns a clone of the pagination instance object matching the id. If no
     * id specified, returns the instance corresponding to the default id.
     */
    PaginationService.prototype.getInstance = function (id) {
        if (id === void 0) { id = this.DEFAULT_ID; }
        if (this.instances[id]) {
            return this.clone(this.instances[id]);
        }
        return {};
    };
    /**
     * Perform a shallow clone of an object.
     */
    PaginationService.prototype.clone = function (obj) {
        var target = {};
        for (var i in obj) {
            if (obj.hasOwnProperty(i)) {
                target[i] = obj[i];
            }
        }
        return target;
    };
    return PaginationService;
}());
exports.PaginationService = PaginationService;