BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Binding Commands and their views          BorlandTalk.com Forum Index -> Delphi OO design View previous topic :: View next topic   Author Message Joao Morais Guest Posted: Fri Jun 02, 2006 4:17 am    Post subject: Binding Commands and their views Hello, (First of all, sorry about this probable reintroduced thread, I couldn't upload some apparently interesting messages before Dec/2005 from this ng.) Following the MVP concept, how should I bind a command instance and the control that triggers such command? I'd thought about a view that holds the control, a model that holds the command, and a presenter; or a smart view that holds the control, knows what to do when the control is triggered, but both approaches didn't sound coherent to me. Hints? Thanks, -- Joao Morais Back to top Joanna Carter [TeamB] Guest Posted: Fri Jun 02, 2006 1:16 pm    Post subject: Re: Binding Commands and their views "Joao Morais" <morais (AT) laserpress (DOT) srv.br> a écrit dans le message de news: 447f9e8e$1 (AT) newsgroups (DOT) borland.com... | Following the MVP concept, how should I bind a command instance and the | control that triggers such command? In Delphi for Win32, I simply attach a handler in the Command to the OnClick event of the control. | I'd thought about a view that holds the control, a model that holds the | command, and a presenter; or a smart view that holds the control, knows | what to do when the control is triggered, but both approaches didn't | sound coherent to me. Command/UI interaction does not need a models or presenters as you are only really "listening" for a single input "pulse". Joanna -- Joanna Carter [TeamB] Consultant Software Engineer Back to top Joao Morais Guest Posted: Mon Jun 05, 2006 3:56 pm    Post subject: Re: Binding Commands and their views Joanna Carter [TeamB] wrote: Quote: "Joao Morais" <morais (AT) laserpress (DOT) srv.br> a écrit dans le message de news: 447f9e8e$1 (AT) newsgroups (DOT) borland.com... | Following the MVP concept, how should I bind a command instance and the | control that triggers such command? In Delphi for Win32, I simply attach a handler in the Command to the OnClick event of the control. Yeah, quite simple and perfect, thanks. It's working now. Please, another hint - my application has tons of commands that should be triggered by a MenuItem of the MainForm.Menu. I wouldn't like to include all of them into the Main Presentation unit, but make this association via <SomeUnit>'s initialization section instead. How it sounds, and what is your suggestion about this implementation? Thank you, -- Joao Morais Back to top Joanna Carter [TeamB] Guest Posted: Mon Jun 05, 2006 4:11 pm    Post subject: Re: Binding Commands and their views "Joao Morais" <morais (AT) laserpress (DOT) srv.br> a écrit dans le message de news: 44840ded$1 (AT) newsgroups (DOT) borland.com... | Please, another hint - my application has tons of commands that should | be triggered by a MenuItem of the MainForm.Menu. I wouldn't like to | include all of them into the Main Presentation unit, but make this | association via <SomeUnit>'s initialization section instead. How it | sounds, and what is your suggestion about this implementation? It is doubtful whether "tons" of commands would all apply to the same business class. The idea of MVP, and other means of separating logic, is that you do not attempt to place everything in the same place. Also there is a difference between Commands as part of MVP and managing application workflow. I would suggest that you look at the idea of "manager" or "scenario" classes that model concepts like Order Management, Customer Management, etc. Possibly think about "Work Area" as a concept. Joanna -- Joanna Carter [TeamB] Consultant Software Engineer Back to top Joao Morais Guest Posted: Mon Jun 05, 2006 4:51 pm    Post subject: Re: Binding Commands and their views Joanna Carter [TeamB] wrote: Quote: "Joao Morais" <morais (AT) laserpress (DOT) srv.br> a écrit dans le message de news: 44840ded$1 (AT) newsgroups (DOT) borland.com... | Please, another hint - my application has tons of commands that should | be triggered by a MenuItem of the MainForm.Menu. I wouldn't like to | include all of them into the Main Presentation unit, but make this | association via <SomeUnit>'s initialization section instead. How it | sounds, and what is your suggestion about this implementation? It is doubtful whether "tons" of commands would all apply to the same business class. The idea of MVP, and other means of separating logic, is that you do not attempt to place everything in the same place. Ok, in this case 'tons' means more than I would like to place in the same presenter, but I can be wrong (i.e. isn't so much, isn't in the right place, etc.). This is the main form of an application that will have links to several other forms. Quote: Also there is a difference between Commands as part of MVP and managing application workflow. I would suggest that you look at the idea of "manager" or "scenario" classes that model concepts like Order Management, Customer Management, etc. Possibly think about "Work Area" as a concept. Interesting, I'll have a look. If you have some links, they'll be very much appreciated. Thank you, -- Joao Morais Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi OO design All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.