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The rooms are defined in a separate assembly called Museum and are not part of the kernel. The following is an example of a room implementation. Again, remember to include a reference to LibLightingSystem (right-click References in Museum and select Add Reference Projects LibLightingSystem). ... using LibLightingSystem; namespace Museum { class PrivateRoom : INoRemoteControlRoom { } class PublicRoom : ISensorRoom { public bool IsPersonInRoom { get { return false; } } double _lightLevel; public double LightLevel { get { return _lightLevel; } } public void LightSwitch(bool lightState) { if (lightState) { _lightLevel = 1.0; } else { _lightLevel = 0.0; } }

27. In AdminDepartments.aspx, write the following code: <%@ Page Title="" Language="C#" MasterPageFile="~/Admin.master" AutoEventWireup="true" CodeFile="AdminDepartments.aspx.cs" Inherits="AdminDepartments" % <asp:Content ID="Content2" ContentPlaceHolderID="titlePlaceHolder" Runat="Server"> <span class="AdminTitle">Catalog Admin</span> </asp:Content> <asp:Content ID="Content1" ContentPlaceHolderID="adminPlaceHolder" Runat="Server"> Some administration features here </asp:Content> 28. Double-click web.config in Solution Explorer and add the following sections right after the <connectionStrings> element. We ve included the code for all the admin sections you ll write in this chapter and the next, but feel free to add them as you need them. <connectionStrings> ... </connectionStrings> <location path="AdminDepartments.aspx"> <system.web> <authorization> <allow roles="Administrators" /> <deny users="*" /> </authorization> </system.web> </location> <location path="AdminCategories.aspx"> <system.web> <authorization> <allow roles="Administrators" /> <deny users="*" /> </authorization> </system.web> </location> <location path="AdminProducts.aspx"> <system.web> <authorization> <allow roles="Administrators" /> <deny users="*" /> </authorization>

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public void DimLight(double level) { _lightLevel = level; } } } The two room declarations, PrivateRoom and PublicRoom, are both internal to the assembly. Each room implements the interface that it deems appropriate. PrivateRoom implements the interface INoRemoteControlRoom, indicating that LightingController should leave the room alone. PublicRoom implements ISensorRoom, indicating that it will tell the controller when a person is in the room and allow itself to be controlled. The implementation of PublicRoom is trivial and frankly not that useful, but it illustrates the bare minimum of what needs to be implemented. In a production environment, PublicRoom would have access to external devices such as a heat sensor and lights. The objective of PublicRoom would be to give and take signals from the LightingController and take action. It is not up to PublicRoom to ask whether or not a decision is correct. For example, if LightingController indicated to turn the light off even though a person is in the room, then PublicRoom would not ask why the light is being turned off.

</system.web> </location> <location path="AdminProductDetails.aspx"> <system.web> <authorization> <allow roles="Administrators" /> <deny users="*" /> </authorization> </system.web> </location> <system.web> 29. Load BalloonShop and try to access AdminDepartments.aspx. You ll be asked for your login information and you won t be allowed to access that page unless you re an administrator.

Note When you are designing a kernel-like architecture, the implementations are realizations of ideas

Congratulations for finishing this long exercise! First, test that your new features work as expected. Try also to access the AdminDepartments.aspx page without being logged in as admin, or try to log out when you re in the admin page. You should be forwarded to the login page. In this exercise, you first added the Administrators role and the admin user to your site. You performed these tasks using the ASP.NET web application Administration page. Feel free to check out other options of that page as well. For instance, you can access and manage the options you saved to web.config (such as SiteName, and so on) by going to the Application tab, and then clicking Create/Manage application settings. After adding the admin user, you created the UserInfo Web User Control. There you used a number of the .NET login controls that were explained previously. You could have used the designer to build these controls and their templates and you can still use the designer to edit them, which I encourage you to test but in this exercise, it was easier to simply type the code. Let s see how these controls were used: LoginView is capable of displaying various templates depending on what user is logged in at the moment. The AnonymousTemplate is displayed if no user is logged in, and it generates the You are not logged in text and a link to the login page. <AnonymousTemplate> <tr> <td class="UserInfoHead">Welcome!</td> </tr> <tr> <td class="UserInfoContent"> You are not logged in. <asp:LoginStatus ID="LoginStatus1" runat="server" /> </td> </tr> </AnonymousTemplate>

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