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43 package org.netbeans.html.ko4j;
45 import net.java.html.json.Model;
46 import org.apidesign.html.boot.spi.Fn;
47 import org.apidesign.html.context.spi.Contexts;
48 import org.apidesign.html.context.spi.Contexts.Provider;
49 import org.apidesign.html.json.spi.Technology;
50 import org.apidesign.html.json.spi.Transfer;
51 import org.apidesign.html.json.spi.WSTransfer;
52 import org.openide.util.lookup.ServiceProvider;
54 /** Support for <a href="http://knockoutjs.com">knockout.js</a>
55 * and its Java binding via {@link Model model classes}.
56 * Registers {@link Provider}, so {@link java.util.ServiceLoader} can find it.
58 * @author Jaroslav Tulach
61 @ServiceProvider(service = Provider.class)
62 public final class KO4J implements Provider {
63 private final Fn.Presenter presenter;
70 public KO4J(Fn.Presenter presenter) {
71 this.presenter = presenter;
74 private FXContext getKO() {
76 c = new FXContext(presenter == null ? Fn.activePresenter() : presenter);
81 /** Return instance of the knockout.js for Java technology.
82 * @return non-null instance
84 public Technology knockout() {
88 /** Browser based implementation of transfer interface. Uses
89 * browser method to convert string to JSON.
91 * @return non-null instance
93 public Transfer transfer() {
97 /** Returns browser based implementation of websocket transfer.
98 * If available (for example JavaFX WebView on JDK7 does not have
99 * this implementation).
101 * @return an instance or <code>null</code>, if there is no
102 * <code>WebSocket</code> object in the browser
104 public WSTransfer<?> websockets() {
105 return getKO().areWebSocketsSupported() ? getKO() : null;
108 /** Registers technologies at position 100:
110 * <li>{@link #knockout()}</li>
111 * <li>{@link #transfer()}</li>
112 * <li>{@link #websockets()()} - if browser supports web sockets</li>
114 * @param context the context to register to
115 * @param requestor the class requesting the registration
118 public void fillContext(Contexts.Builder context, Class<?> requestor) {
119 context.register(Technology.class, knockout(), 100);
120 context.register(Transfer.class, transfer(), 100);
121 context.register(WSTransfer.class, websockets(), 100);