Created
December 5, 2011 20:34
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Java Buttondemo translated from Java to Clojure
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| (ns buttondemo.core | |
| (:gen-class) | |
| (:import [javax.swing AbstractButton JButton JPanel JFrame ImageIcon] | |
| [java.awt.event ActionEvent KeyEvent ActionListener]) | |
| (:use [clojure.contrib.swing-utils])) | |
| (defn create-image-icon [path] | |
| ; (prn (. System getProperty "user.dir")) | |
| ; (prn (. System getProperty "java.class.path")) | |
| (if-let [img-url (clojure.java.io/resource path)] | |
| (ImageIcon. img-url) | |
| (.println System/err (str "File not found:" path)))) | |
| (defn enable-buttons [button-flags] | |
| (doseq [[button flag] button-flags] (.setEnabled button flag))) | |
| (defn initialize-buttons [b1 b2 b3] | |
| (doto b1 | |
| (add-action-listener | |
| (fn [_] (enable-buttons [[b1 false][b2 false][b3 true]]))) | |
| (.setVerticalTextPosition AbstractButton/CENTER) | |
| (.setHorizontalTextPosition AbstractButton/LEADING) | |
| (.setToolTipText "I can disable the middle button.") | |
| (.setMnemonic KeyEvent/VK_D)) | |
| (doto b2 | |
| (add-action-listener (fn [_] (prn "I told you not to click me."))) | |
| (.setVerticalTextPosition AbstractButton/BOTTOM) | |
| (.setHorizontalTextPosition AbstractButton/CENTER) | |
| (.setToolTipText "Don't click me.") | |
| (.setMnemonic KeyEvent/VK_M)) | |
| (doto b3 | |
| (add-action-listener | |
| (fn [_] (enable-buttons [[b1 true][b2 true][b3 false]]))) | |
| (.setMnemonic KeyEvent/VK_E) | |
| (.setToolTipText "I can enable the middle button.") | |
| (.setEnabled false)) | |
| ) | |
| (defn -main [] | |
| (let [[b1 b2 b3 :as buttons] (for [[title file] | |
| ; [["<html><center><b><u>D</u>isable</b><br><font color=#ffffdd>middle button</font>" "right.gif"] | |
| [["Disable middle button" "right.gif"] | |
| ["Middle button" "middle.gif"] | |
| ["Enable middle button" "left.gif"]]] | |
| (JButton. title (create-image-icon file))) | |
| panel (doto (JPanel.) (.setOpaque true))] | |
| (doseq [b buttons] (doto panel (.add b))) | |
| (initialize-buttons b1 b2 b3) | |
| (do-swing-and-wait | |
| (doto (JFrame. "Button Demo") | |
| (.setDefaultCloseOperation JFrame/EXIT_ON_CLOSE) | |
| (.setContentPane panel) | |
| (.pack) | |
| (.setVisible true)))) | |
| ) |
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| defproject buttondemo "1.0.0-SNAPSHOT" | |
| :description "Translation of the abysmal java button demo into clojure." | |
| :dependencies [[org.clojure/clojure "1.2.0"] | |
| [org.clojure/clojure-contrib "1.2.0"]] | |
| ; :resources-path "resources/" | |
| :main buttondemo.core | |
| :license {:url "http://bit.ly/igfXCC" | |
| :comments "Derived in April 2011 from the above url."} | |
| ) |
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The graphics files left.gif, middle.gif and right.gif, can be obtained from http://docs.oracle.com/javase/tutorial/uiswing/examples/components/ (cf. ButtonDemo) and go under the resources directory of the Leiningen project.