The defn wrapping the call to proxy basically is the constructor, so you
wind up with something roughly like
(defn get-window []
(let [this (proxy [Window] ["My Window!"]
; any methods you want to override on Window go here
)
; stuff making panels goes here
]
(.addComponent this horizontal-panel)
this))
Note, I'm calling a variable 'this' but it's *just a variable, the only
reason I called it 'this' was to make it look more like the java version.
On Sat Jan 31 2015 at 9:53:30 AM coco <[email protected]>
wrote:
> thanks Michael this does the job...in this code, now I've other doubt
>
> public class MyWindow extends Window
> {
>
>
> public MyWindow() // <--- not clear where I need declare it
> {
> super("My Window!");
> Panel horizontalPanel = new Panel(new Border.Invisible(),
> Panel.Orientation.HORIZONTAL);
> Panel leftPanel = new Panel(new Border.Bevel(true),
> Panel.Orientation.VERTICAL);
> Panel middlePanel = new Panel(new Border.Bevel(true),
> Panel.Orientation.VERTICAL);
> Panel rightPanel = new Panel(new Border.Bevel(true),
> Panel.Orientation.VERTICAL);
>
> horizontalPanel.addComponent(leftPanel);
> horizontalPanel.addComponent(middlePanel);
> horizontalPanel.addComponent(rightPanel);
>
> addComponent(horizontalPanel); // <----this is a confusing part too
> }
> }
>
>
>
> in this code addComponent(horizontalPanel) is basically something like
> this.addComponent(horizontalPanel)
>
> does clojure have the "this" reference??...how can I call the
> constuctor...I'm thinkingin something like this
>
> (defn MyWindow []
> (proxy [Window] ["My windows!!"]
> (MyWindow [] (. this addComponent (Label. "Bang!!") ))))
>
> is it wrong no? :D
>
> thanks!!!
>
> El viernes, 30 de enero de 2015, 18:47:48 (UTC-4:30), Michael Blume
> escribió:
>>
>> (defn my-window []
>> (proxy [Window] []))
>>
>> should do the trick
>>
>> Proxy takes a vector of implemented interfaces and at most one superclass
>> (in your case, Window), and then a second vector of arguments to pass to
>> the superclass constructor (in your case, an empty vector) and then a
>> series of methods implemented/overridden on the parent class/interfaces --
>> in your case there's none of those.
>>
>> My understanding is that proxy is not quite as performant as
>> reify/defrecord, but it's the only game in town if you actually want to
>> subclass something.
>>
>> Hope this helps =)
>>
>> On Fri Jan 30 2015 at 3:05:11 PM coco <[email protected]> wrote:
>>
> Hi everybody, I need implement this java code in clojure
>>>
>>> public class MyWindow extends Window
>>> {
>>> public MyWindow()
>>> {
>>> super("My Window!");
>>> }
>>> }
>>>
>>> MyWindow myWindow = new MyWindow();
>>>
>>>
>>> unfortunately the clojure documentation for generate classes is not so
>>> complete or straightforward for my understand...must I use gen-class or can
>>> I use defrecord for this task?...how can I call super class
>>> constructors??...
>>>
>>> thanks
>>>
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