On Sun, Jan 30, 2011 at 7:01 PM, Ken Wesson <kwess...@gmail.com> wrote: > On Sun, Jan 30, 2011 at 9:26 AM, Jonas Enlund <jonas.enl...@gmail.com> wrote: >> Hi. >> I'm trying to create a java.io.Writer proxy (which writes to a >> JTextArea) but I can't get it to work. >> Here is my clojure code so far: >> >> (def text-area (javax.swing.JTextArea.)) >> >> (def frame >> (let [f (javax.swing.JFrame.)] >> (.. f getContentPane (add text-area)) >> (.setMinimumSize f (java.awt.Dimension. 200 200)) >> (.setVisible f true) >> f)) >> >> (def text-area-writer >> (proxy [java.io.Writer] [] >> (close []) >> (flush []) >> (write [^chars chrs ^int offs ^int len] >> (.append text-area (String. chrs offs len))))) >> >> When I load the code above I get an "IllegalArgumentException: Unable >> to resolve classname: int" so I think I'm not type hinting correctly. > > Indeed. You can't (in 1.2 at least) type hint "int" though you can > "ints" (array of int). Note that int is a primitive type while array > of int is a reference type. > > Type hinting as Integer shouldn't throw exceptions, but you can > probably omit all but the chars hint and have the correct String > constructor overload selected.
I tried with 1.3.0-alpha5. With type hints I get "CompilerException java.lang.IllegalArgumentException: Only long and double primitives are supported". If I only keep the ^chars hint I get an ArityException when I do (.write text-area-writer "hello"). Is this problem unsolvable with proxy? Should I look into gen-class and AOT compilation instead? > > Also note that while text area .append is safe to call from off the > EDT, other Swing methods mostly aren't, and it's something to watch > for if you do anything similar to this with other Swing components, > and wherever you construct your text area and its surrounds. > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your > first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
