# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1357983877 -3600
# Node ID 2d52faa0c40a6653142cf9f205d6d100b1ded79d
# Parent  af1d8e8289557c45647db08933391e759e91ed52
Basic support for timer

diff -r af1d8e828955 -r 2d52faa0c40a javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/api/Element.java
--- a/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/api/Element.java	Fri Jan 11 11:17:55 2013 +0100
+++ b/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/api/Element.java	Sat Jan 12 10:44:37 2013 +0100
@@ -37,18 +37,14 @@
         body="var e = window.document.getElementById(el.fld_id);\n"
            + "e[property] = value;\n"
     )
-    static void setAttribute(Element el, String property, Object value) {
-        throw new UnsupportedOperationException("Needs JavaScript!");
-    }
+    static native void setAttribute(Element el, String property, Object value);
 
     @JavaScriptBody(
         args={"el", "property"},
         body="var e = window.document.getElementById(el.fld_id);\n"
            + "return e[property];\n"
     )
-    static Object getAttribute(Element el, String property) {
-        throw new UnsupportedOperationException("Needs JavaScript!");
-    }
+    static native Object getAttribute(Element el, String property);
     
     /** Executes given runnable when user performs a "click" on the given
      * element.
@@ -59,7 +55,12 @@
         body="var e = window.document.getElementById(el.fld_id);\n"
            + "e.onclick = function() { r.run__V(); };\n"
     )
-    public final void addOnClick(Runnable r) {
-        throw new UnsupportedOperationException("Needs JavaScript!");
-    }
+    public final native void addOnClick(Runnable r);
+
+    /** Shows alert message dialog in a browser.
+     * @param msg the message to show
+     */
+    @JavaScriptBody(args = "msg", body = "alert(msg);")
+    public static native void alert(String msg);
+    
 }
diff -r af1d8e828955 -r 2d52faa0c40a javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/api/Timer.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/api/Timer.java	Sat Jan 12 10:44:37 2013 +0100
@@ -0,0 +1,59 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.htmlpage.api;
+
+import java.io.Closeable;
+import org.apidesign.bck2brwsr.core.JavaScriptBody;
+
+/**
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+public class Timer implements Closeable {
+    private final Object t;
+    
+    private Timer(Object t) {
+        this.t = t;
+    }
+    
+    /** Creates a timer that invokes provided runnable on a fixed interval
+     * 
+     * @param r the runnable to execute
+     * @param time milliseconds to invoke the timer periodically
+     */
+    public static Timer create(Runnable r, int time) {
+        return new Timer(interval(r, time));
+    }
+    
+    @JavaScriptBody(args = { "r", "time" }, body = 
+        "return window.setInterval(function() { r.run__V(); }, time);"
+    )
+    private static native Object interval(Runnable r, int time);
+
+    @JavaScriptBody(args = { "self" }, body = 
+        "window.clearInterval(self);"
+    )
+    private static native void close(Object self);
+    
+    /** Cancels this timer.
+     */
+    @Override
+    public void close() {
+        close(t);
+    }
+}