com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory Java Examples

/**
 * Calls the {@code callback} given in parameter once for each value pair in the list, in insertion order.
 * @param callback function to execute for each element
 */
@JsxFunction({CHROME, FF, FF68, FF60})
public void forEach(final Object callback) {
    final List<DomNode> nodes = getElements();

    final WebClient client = getWindow().getWebWindow().getWebClient();
    final HtmlUnitContextFactory cf = ((JavaScriptEngine) client.getJavaScriptEngine()).getContextFactory();

    final ContextAction<Object> contextAction = new ContextAction<Object>() {
        @Override
        public Object run(final Context cx) {
            final Function function = (Function) callback;
            final Scriptable scope = getParentScope();
            for (int i = 0; i < nodes.size(); i++) {
                function.call(cx, scope, NodeList.this, new Object[] {
                        nodes.get(i).getScriptableObject(), i, NodeList.this});
            }
            return null;
        }
    };
    cf.call(contextAction);
}
 

/**
 * <span style="color:red">INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.</span><br>
 *
 * Fires the event on the element. Nothing is done if JavaScript is disabled.
 * @param event the event to fire
 * @return the execution result, or {@code null} if nothing is executed
 */
public ScriptResult fireEvent(final Event event) {
    final WebClient client = getPage().getWebClient();
    if (!client.isJavaScriptEnabled()) {
        return null;
    }

    if (!handles(event)) {
        return null;
    }

    if (LOG.isDebugEnabled()) {
        LOG.debug("Firing " + event);
    }

    final EventTarget jsElt = getScriptableObject();
    final HtmlUnitContextFactory cf = ((JavaScriptEngine) client.getJavaScriptEngine()).getContextFactory();
    final ScriptResult result = cf.callSecured(cx -> jsElt.fireEvent(event), getHtmlPageOrNull());
    if (event.isAborted(result)) {
        preventDefault();
    }
    return result;
}
 

/**
 * Creates a new event instance.
 *
 * @param target the event target
 * @param type the event type
 * @param state the state object
 */
public PopStateEvent(final EventTarget target, final String type, final Object state) {
    super(target, type);
    if (state instanceof NativeObject && getBrowserVersion().hasFeature(JS_POP_STATE_EVENT_CLONE_STATE)) {
        final NativeObject old = (NativeObject) state;
        final NativeObject newState = new NativeObject();

        final WebClient client = getWindow().getWebWindow().getWebClient();
        final HtmlUnitContextFactory cf = ((JavaScriptEngine) client.getJavaScriptEngine()).getContextFactory();

        final ContextAction<Object> contextAction = new ContextAction<Object>() {
            @Override
            public Object run(final Context cx) {
                for (final Object o : ScriptableObject.getPropertyIds(old)) {
                    final String property = Context.toString(o);
                    newState.defineProperty(property, ScriptableObject.getProperty(old, property),
                            ScriptableObject.EMPTY);
                }
                return null;
            }
        };
        cf.call(contextAction);
        state_ = newState;
    }
    else {
        state_ = state;
    }
}
 

/**
 * Attaches a visual (GUI) debugger to the specified client.
 * @param client the client to which the visual debugger is to be attached
 * @see <a href="http://www.mozilla.org/rhino/debugger.html">Mozilla Rhino Debugger Documentation</a>
 */
public static void attachVisualDebugger(final WebClient client) {
    final ScopeProvider sp = null;
    final HtmlUnitContextFactory cf = ((JavaScriptEngine) client.getJavaScriptEngine()).getContextFactory();
    final Main main = Main.mainEmbedded(cf, sp, "HtmlUnit JavaScript Debugger");
    main.getDebugFrame().setExtendedState(Frame.MAXIMIZED_BOTH);

    final SourceProvider sourceProvider = new SourceProvider() {
        @Override
        public String getSource(final DebuggableScript script) {
            String sourceName = script.getSourceName();
            if (sourceName.endsWith("(eval)") || sourceName.endsWith("(Function)")) {
                return null; // script is result of eval call. Rhino already knows the source and we don't
            }
            if (sourceName.startsWith("script in ")) {
                sourceName = StringUtils.substringBetween(sourceName, "script in ", " from");
                for (final WebWindow ww : client.getWebWindows()) {
                    final WebResponse wr = ww.getEnclosedPage().getWebResponse();
                    if (sourceName.equals(wr.getWebRequest().getUrl().toString())) {
                        return wr.getContentAsString();
                    }
                }
            }
            return null;
        }
    };
    main.setSourceProvider(sourceProvider);
}
 

/**
 * Starts an interactive JavaScript debugger, and break at the next JavaScript execution.
 *
 * <p>
 * This is useful during debugging a test so that you can step execute and inspect state of JavaScript.
 * This will launch a Swing GUI, and the method returns immediately.
 *
 * <p>
 * Note that installing a debugger appears to make an execution of JavaScript substantially slower.
 *
 * <p>
 * TODO: because each script block evaluation in HtmlUnit is done in a separate Rhino context,
 * if you step over from one script block, the debugger fails to kick in on the beginning of the next script
 * block.
 * This makes it difficult to set a break point on arbitrary script block in the HTML page. We need to fix this
 * by tweaking {@link org.mozilla.javascript.tools.debugger.Dim.StackFrame#onLineChange(Context, int)}.
 */
public Dim interactiveJavaScriptDebugger() {
    Global global = new Global();
    HtmlUnitContextFactory cf = ((JavaScriptEngine)getJavaScriptEngine()).getContextFactory();
    global.init(cf);

    Dim dim = org.mozilla.javascript.tools.debugger.Main.mainEmbedded(cf, global, "Rhino debugger: " + testDescription.getDisplayName());

    // break on exceptions. this catch most of the errors
    dim.setBreakOnExceptions(true);

    return dim;
}
 

/**
 * Starts an interactive JavaScript debugger, and break at the next JavaScript execution.
 *
 * <p>
 * This is useful during debugging a test so that you can step execute and inspect state of JavaScript.
 * This will launch a Swing GUI, and the method returns immediately.
 *
 * <p>
 * Note that installing a debugger appears to make an execution of JavaScript substantially slower.
 *
 * <p>
 * TODO: because each script block evaluation in HtmlUnit is done in a separate Rhino context,
 * if you step over from one script block, the debugger fails to kick in on the beginning of the next script block.
 * This makes it difficult to set a break point on arbitrary script block in the HTML page. We need to fix this
 * by tweaking {@link Dim.StackFrame#onLineChange(Context, int)}.
 */
public Dim interactiveJavaScriptDebugger() {
    Global global = new Global();
    HtmlUnitContextFactory cf = ((JavaScriptEngine)getJavaScriptEngine()).getContextFactory();
    global.init(cf);

    Dim dim = org.mozilla.javascript.tools.debugger.Main.mainEmbedded(cf, global, "Rhino debugger: " + getName());

    // break on exceptions. this catch most of the errors
    dim.setBreakOnExceptions(true);

    return dim;
}