Databases
StackOverflow2013
Postsdbo
POHow to implement strategy pattern in a controller
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to implement strategy pattern in a controller
    primarykey
    data
    text
    <p>I am trying to implement a strategy pattern for the controller component of my program. </p> <p>I have different view states such as CreateViewState in which you can create items on a blank canvas, so it needs methods like, <code>createInput()</code>, <code>addToModel()</code> and <code>stuff</code>.</p> <p>Another state that I have is the EditViewState in which you can edit the previously added items. You select an input and then change its color or size or whatever. So methods that controller needs is <code>selectInputAtLocation()</code>, or <code>changeColor(java.awt.Color color)</code> or <code>changeSize(int size)</code>...</p> <p>The way I go about it is I created an IController interface that has common methods like repOK(), toString() and a couple more like thisWasTheLocation(int x, int y) which the view calls statically to pass the location pressed on the screen to the controller.</p> <p>However for doing their specific job I don't have a common method that they have. I was thinking about putting a <code>doStuff(Item item)</code> method in the interface and then do the controller logic in there so client code can use <code>IController.getInstance().doStuff(item)</code> in the entire code. As far as I can predict I will need to cast the controller if I call the specific methods that they have (<code>changeColor()</code> for editController, <code>createInput()</code> for createController).</p> <p>If I create a <code>doStuff()</code> method in the interface, then I need to implement a lot of if-statements especially for the editController (it has more than 7-8 methods that I did not mention).</p> <p>How should go about designing this whole system?</p> <p>P.S: <code>Controllers</code> are singletons therefore the <code>getInstance()</code></p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMark
    1. USeytanfb
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow to implement strategy pattern in a controller
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    2. VO
      singulars
      1. POHow to implement strategy pattern in a controller
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI started to try and answer your question again but unfortunately there are too many assumptions I have to make and I don't know what your course is currently trying to teach you, and how far along you are. If you can post a more specific question maybe I can help further. There's nothing wrong with an `if` statement if it works. If you have some working code to post, we can help suggest improvements.
      singulars
      1. POHow to implement strategy pattern in a controller
      1. USBrad
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload