2

schangxiang@126.com

2024-08-16 b47c50a2a514def7374b32d7194b2c599cba5625

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
/**
 * ngTable: Table + Angular JS
 *
 * @author Vitalii Savchuk <esvit666@gmail.com>
 * @url https://github.com/esvit/ng-table/
 * @license New BSD License <http://creativecommons.org/licenses/BSD/>
 */
 
(function(){
    'use strict';
 
    angular.module('ngTable')
        .factory('ngTableEventsChannel', ngTableEventsChannel);
 
    ngTableEventsChannel.$inject = ['$rootScope'];
 
    /**
     * @ngdoc service
     * @name ngTableEventsChannel
     * @description strongly typed pub/sub for `NgTableParams`
     *
     * Supported events:
     *
     * * afterCreated - raised when a new instance of `NgTableParams` has finished being constructed
     * * afterReloadData - raised when the `reload` event has finished loading new data
     * * datasetChanged - raised when `settings` receives a new data array
     * * pagesChanged - raised when a new pages array has been generated
     */
    function ngTableEventsChannel($rootScope){
 
        var events = {};
        events = addChangeEvent('afterCreated', events);
        events = addChangeEvent('afterReloadData', events);
        events = addChangeEvent('datasetChanged', events);
        events = addChangeEvent('pagesChanged', events);
        return events;
 
        //////////
 
        function addChangeEvent(eventName, target){
            var fnName = eventName.charAt(0).toUpperCase() + eventName.substring(1);
            var event = {};
            event['on' + fnName] = createEventSubscriptionFn(eventName);
            event['publish' + fnName] = createPublishEventFn(eventName);
            return angular.extend(target, event);
        }
 
        function createEventSubscriptionFn(eventName){
 
            return function subscription(handler/*[, eventSelector or $scope][, eventSelector]*/){
                var eventSelector = angular.identity;
                var scope = $rootScope;
 
                if (arguments.length === 2){
                    if (angular.isFunction(arguments[1].$new)) {
                        scope = arguments[1];
                    } else {
                        eventSelector = arguments[1]
                    }
                } else if (arguments.length > 2){
                    scope = arguments[1];
                    eventSelector = arguments[2];
                }
 
                // shorthand for subscriber to only receive events from a specific publisher instance
                if (angular.isObject(eventSelector)) {
                    var requiredPublisher = eventSelector;
                    eventSelector = function(publisher){
                        return publisher === requiredPublisher;
                    }
                }
 
                return scope.$on('ngTable:' + eventName, function(event, params/*, ...args*/){
                    // don't send events published by the internal NgTableParams created by ngTableController
                    if (params.isNullInstance) return;
 
                    var eventArgs = rest(arguments, 2);
                    var fnArgs = [params].concat(eventArgs);
                    if (eventSelector.apply(this, fnArgs)){
                        handler.apply(this, fnArgs);
                    }
                });
            }
        }
 
        function createPublishEventFn(eventName){
            return function publish(/*args*/){
                var fnArgs = ['ngTable:' + eventName].concat(Array.prototype.slice.call(arguments));
                $rootScope.$broadcast.apply($rootScope, fnArgs);
            }
        }
 
        function rest(array, n) {
            return Array.prototype.slice.call(array, n == null ? 1 : n);
        }
    }
})();