mediator

WPF MVVM dialog example

由 天大地大妈咪最大 提交于 2019-11-27 17:01:48
Does anyone have any examples of showing a window dialog using MVVM (Prism)? - for example a configuration settings window when a command is executed. All of the examples I've seen use the mediator pattern which is fine, but they also all have a reference to the view in the view model which is not ideal (we're using DataTemplates) Thanks Cameron MacFarland I would use a service to display the dialog. The service can then also link views with viewmodels. public interface IDialogService { void RegisterView<TView, TViewModel>() where TViewModel:IDialogViewModel; bool? ShowDialog(IDialogViewModel

Observer Pattern vs Mediator Pattern

由 柔情痞子 提交于 2019-11-27 13:17:57
问题 I did some googling and yes I know that questions about the difference between these two has been asked before on stackoverflow and all over the web. But I mostly find worded answers, which can be confusing. My question is if anyone here can please provide two visual examples of both the mediator and observer patterns for me that can clearly demonstrate the difference between the two. In Javascript. Thank you! 回答1: Yes, they are distinct. I will explain by examples from real life, based on a

Mediator Vs Observer Object-Oriented Design Patterns

由 筅森魡賤 提交于 2019-11-27 02:57:10
I have been reading the Gang Of Four , in order to solve some of my problems and came across the Mediator pattern. I had earlier used Observer in my projects for making some GUI application. I am a bit confused as I do not find great difference between the two. I browsed to find the difference but could not find any apt answer for my query. Could some one help me to differentiate between the two with some good example which clearly demarcates the two? The Observer pattern: Defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified

Façade vs. Mediator

由 自闭症网瘾萝莉.ら 提交于 2019-11-26 23:51:08
问题 I've been researching the difference between these two patterns. I understand that facade encapsulates access to a sub system and mediator encapsulates the interactions between components. I understand that sub system components are not aware of the facade, where as components are obviously aware of the mediator. I'm currently using a facade for encapsulating the method of retrieving configuration information, e.g. App.Config, user setting stored in SQL, Assembly info, etc, and a mediator for

Mediator Vs Observer Object-Oriented Design Patterns

由 爷，独闯天下 提交于 2019-11-26 22:14:40
问题 I have been reading the Gang Of Four , in order to solve some of my problems and came across the Mediator pattern. I had earlier used Observer in my projects for making some GUI application. I am a bit confused as I do not find great difference between the two. I browsed to find the difference but could not find any apt answer for my query. Could some one help me to differentiate between the two with some good example which clearly demarcates the two? 回答1: The Observer pattern: Defines a one

global communication in angular module: event bus or mediator pattern/service

由 半世苍凉 提交于 2019-11-26 19:32:32
问题 So far I have seen many solutions of the problem. The simplest one is, of course, to $emit an event in $rootScope as an event bus e.g. ( https://github.com/btilford/anti-patterns/blob/master/angular/Angular.md ) angular.module('myModule').directive('directiveA', function($rootScope) { return { link : function($scope, $element) { $element.on('click', function(event) { $rootScope.$emit('directiveA:clicked', event); }); } } }); angular.module('myModule').directive('directiveB', function() {

WPF MVVM dialog example

由 左心房为你撑大大i 提交于 2019-11-26 18:49:39
问题 Does anyone have any examples of showing a window dialog using MVVM (Prism)? - for example a configuration settings window when a command is executed. All of the examples I've seen use the mediator pattern which is fine, but they also all have a reference to the view in the view model which is not ideal (we're using DataTemplates) Thanks 回答1: I would use a service to display the dialog. The service can then also link views with viewmodels. public interface IDialogService { void RegisterView
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