Java Code Examples for net.sourceforge.htmlunit.corejs.javascript.Context#toString()

/**
 * Sets the value of the JavaScript attribute {@code value}.
 *
 * @param newValue the new value
 */
@Override
public void setValue(final Object newValue) {
    if (null == newValue) {
        getDomNodeOrDie().setValueAttribute("");
        return;
    }

    final String val = Context.toString(newValue);
    final BrowserVersion browserVersion = getBrowserVersion();
    if (StringUtils.isNotEmpty(val) && "file".equalsIgnoreCase(getType())) {
        if (browserVersion.hasFeature(JS_SELECT_FILE_THROWS)) {
            throw Context.reportRuntimeError("InvalidStateError: "
                    + "Failed to set the 'value' property on 'HTMLInputElement'.");
        }
        return;
    }

    getDomNodeOrDie().setValueAttribute(val);
}
 

/**
 * {@inheritDoc}
 */
@Override
@JsxFunction
public String toString() {
    String name;
    if (name_ == Undefined.instance) {
        name = "";
    }
    else {
        name = Context.toString(name_);
        final ClassConfiguration config = AbstractJavaScriptConfiguration
                .getClassConfiguration(getClass(), getBrowserVersion());

        for (final Entry<String, ClassConfiguration.PropertyInfo> propertyEntry
                : config.getStaticPropertyEntries()) {
            if (propertyEntry.getKey().equals(name)) {
                name = "Symbol." + name;
                break;
            }
        }
    }
    return "Symbol(" + name + ')';
}
 

/**
 * 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();
        Context.enter();
        try {
            for (final Object o : ScriptableObject.getPropertyIds(old)) {
                final String property = Context.toString(o);
                newState.defineProperty(property, ScriptableObject.getProperty(old, property),
                        ScriptableObject.EMPTY);
            }
        }
        finally {
            Context.exit();
        }
        state_ = newState;
    }
    else {
        state_ = state;
    }
}
 

/**
 * Gets a named property from the object.
 * Normally HtmlUnit objects don't need to overwrite this method as properties are defined
 * on the prototypes from the XML configuration. In some cases where "content" of object
 * has priority compared to the properties consider using utility {@link #getWithPreemption(String)}.
 * {@inheritDoc}
 */
@Override
public Object get(String name, final Scriptable start) {
    // If this object is not case-sensitive about property names, transform the property name accordingly.
    if (!caseSensitive_) {
        for (final Object o : getAllIds()) {
            final String objectName = Context.toString(o);
            if (name.equalsIgnoreCase(objectName)) {
                name = objectName;
                break;
            }
        }
    }
    // Try to get property configured on object itself.
    Object response = super.get(name, start);
    if (response != NOT_FOUND) {
        return response;
    }
    if (this == start) {
        response = getWithPreemption(name);
    }
    if (response == NOT_FOUND && start instanceof Window) {
        response = ((Window) start).getWithFallback(name);
    }
    return response;
}
 

/**
 * Replaces all child elements of this element with the supplied value.
 * @param value the new value for the contents of this element
 */
@JsxSetter({CHROME, FF, FF68, FF60})
public void setInnerHTML(final Object value) {
    final DomNode domNode;
    try {
        domNode = getDomNodeOrDie();
    }
    catch (final IllegalStateException e) {
        Context.throwAsScriptRuntimeEx(e);
        return;
    }

    domNode.removeAllChildren();
    getWindow().clearComputedStylesUpToRoot(this);

    final boolean addChildForNull = getBrowserVersion().hasFeature(JS_INNER_HTML_ADD_CHILD_FOR_NULL_VALUE);
    if ((value == null && addChildForNull) || (value != null && !"".equals(value))) {
        final String valueAsString = Context.toString(value);
        parseHtmlSnippet(domNode, valueAsString);
    }
}
 

/**
 * The JavaScript function {@code prompt}.
 * @param message the message
 * @param defaultValue the default value displayed in the text input field
 * @return the value typed in or {@code null} if the user pressed {@code cancel}
 */
@JsxFunction
public String prompt(final String message, Object defaultValue) {
    final PromptHandler handler = getWebWindow().getWebClient().getPromptHandler();
    if (handler == null) {
        if (LOG.isWarnEnabled()) {
            LOG.warn("window.prompt(\"" + message + "\") no prompt handler installed");
        }
        return null;
    }
    if (Undefined.isUndefined(defaultValue)) {
        defaultValue = null;
    }
    else {
        defaultValue = Context.toString(defaultValue);
    }
    return handler.handlePrompt(document_.getPage(), message, (String) defaultValue);
}
 

/**
 * The JavaScript function {@code alert()}.
 * @param message the message
 */
@JsxFunction
public void alert(final Object message) {
    // use Object as parameter and perform String conversion by ourself
    // this allows to place breakpoint here and "see" the message object and its properties
    final String stringMessage = Context.toString(message);
    final AlertHandler handler = getWebWindow().getWebClient().getAlertHandler();
    if (handler == null) {
        if (LOG.isWarnEnabled()) {
            LOG.warn("window.alert(\"" + stringMessage + "\") no alert handler installed");
        }
    }
    else {
        handler.handleAlert(document_.getPage(), stringMessage);
    }
}
 

@Override
public void put(final String name, final Scriptable start, final Object value) {
    if (this != start) {
        super.put(name, start, value);
        return;
    }

    final Scriptable prototype = getPrototype();
    if (prototype != null && !"constructor".equals(name) && prototype.get(name, start) != Scriptable.NOT_FOUND) {
        prototype.put(name, start, value);
        return;
    }

    if (getDomNodeOrNull() != null) { // check if prototype or not
        final Definition style = StyleAttributes.getDefinition(name, getBrowserVersion());
        if (style != null) {
            final String stringValue = Context.toString(value);
            setStyleAttribute(style.getAttributeName(), stringValue);
            return;
        }
    }

    super.put(name, start, value);
}
 

/**
 * Sets the value of the {@code vAlign} property.
 * @param vAlign the value of the {@code vAlign} property
 * @param valid the valid values; if {@code null}, any value is valid
 */
protected void setVAlign(final Object vAlign, final String[] valid) {
    final String valign = Context.toString(vAlign);
    final String valignLC = valign.toLowerCase(Locale.ROOT);
    if (valid == null || ArrayUtils.contains(valid, valignLC)) {
        if (getBrowserVersion().hasFeature(JS_VALIGN_CONVERTS_TO_LOWERCASE)) {
            getDomNodeOrDie().setAttribute("valign", valignLC);
        }
        else {
            getDomNodeOrDie().setAttribute("valign", valign);
        }
    }
    else {
        throw Context.reportRuntimeError("Cannot set the vAlign property to invalid value: " + vAlign);
    }
}
 

void messagePosted(final Object message) {
    final MessageEvent event = new MessageEvent();
    event.initMessageEvent(Event.TYPE_MESSAGE, false, false, message, origin_, "", owningWindow_, null);
    event.setParentScope(owningWindow_);
    event.setPrototype(owningWindow_.getPrototype(event.getClass()));

    final JavaScriptEngine jsEngine =
            (JavaScriptEngine) owningWindow_.getWebWindow().getWebClient().getJavaScriptEngine();
    final ContextAction action = new ContextAction() {
        @Override
        public Object run(final Context cx) {
            return executeEvent(cx, event);
        }
    };

    final ContextFactory cf = jsEngine.getContextFactory();

    final JavaScriptJob job = new WorkerJob(cf, action, "messagePosted: " + Context.toString(message));

    final HtmlPage page = (HtmlPage) owningWindow_.getDocument().getPage();
    owningWindow_.getWebWindow().getJobManager().addJob(job, page);
}
 

/**
 * Posts a message to the {@link Worker} in the page's context.
 * @param message the message
 */
@JsxFunction
public void postMessage(final Object message) {
    final MessageEvent event = new MessageEvent();
    event.initMessageEvent(Event.TYPE_MESSAGE, false, false, message, origin_, "",
                                owningWindow_, Undefined.instance);
    event.setParentScope(owningWindow_);
    event.setPrototype(owningWindow_.getPrototype(event.getClass()));

    if (LOG.isDebugEnabled()) {
        LOG.debug("[DedicatedWorker] postMessage: {}" + message);
    }
    final JavaScriptEngine jsEngine =
            (JavaScriptEngine) owningWindow_.getWebWindow().getWebClient().getJavaScriptEngine();
    final ContextAction<Object> action = new ContextAction<Object>() {
        @Override
        public Object run(final Context cx) {
            worker_.getEventListenersContainer().executeCapturingListeners(event, null);
            final Object[] args = {event};
            worker_.getEventListenersContainer().executeBubblingListeners(event, args);
            return null;
        }
    };

    final ContextFactory cf = jsEngine.getContextFactory();

    final JavaScriptJob job = new WorkerJob(cf, action, "postMessage: " + Context.toString(message));

    final HtmlPage page = (HtmlPage) owningWindow_.getDocument().getPage();
    owningWindow_.getWebWindow().getJobManager().addJob(job, page);
}
 

/**
 * Replaces all child elements of this element with the supplied text value.
 * @param value the new value for the contents of this element
 */
@JsxSetter
public void setInnerText(final Object value) {
    final String valueString;
    if (value == null && getBrowserVersion().hasFeature(JS_INNER_TEXT_VALUE_NULL)) {
        valueString = null;
    }
    else {
        valueString = Context.toString(value);
    }
    setInnerTextImpl(valueString);
}
 

/**
 * Retrieves a form object or an object from an elements collection.
 * @param index Integer or String that specifies the object or collection to retrieve.
 *              If this parameter is an integer, it is the zero-based index of the object.
 *              If this parameter is a string, all objects with matching name or id properties are retrieved,
 *              and a collection is returned if more than one match is made
 * @param subIndex Optional. Integer that specifies the zero-based index of the object to retrieve
 *              when a collection is returned
 * @return an object or a collection of objects if successful, or null otherwise
 */
@JsxFunction(IE)
public Object item(final Object index, final Object subIndex) {
    if (index instanceof Number) {
        return getElements().item(index);
    }

    final String name = Context.toString(index);
    final Object response = getWithPreemption(name);
    if (subIndex instanceof Number && response instanceof HTMLCollection) {
        return ((HTMLCollection) response).item(subIndex);
    }

    return response;
}
 

/**
 * Sets the {@code opacity} style attribute.
 * @param opacity the new attribute
 */
@JsxSetter
public void setOpacity(final Object opacity) {
    if (ScriptRuntime.isNaN(opacity)) {
        return;
    }

    final double doubleValue;
    if (opacity instanceof Number) {
        doubleValue = ((Number) opacity).doubleValue();
    }
    else {
        String valueString = Context.toString(opacity);

        if (valueString.isEmpty()) {
            setStyleAttribute(OPACITY.getAttributeName(), valueString);
            return;
        }

        valueString = valueString.trim();
        try {
            doubleValue = Double.parseDouble(valueString);
        }
        catch (final NumberFormatException e) {
            // ignore wrong value
            return;
        }
    }

    if (Double.isNaN(doubleValue) || Double.isInfinite(doubleValue)) {
        return;
    }
    setStyleAttribute(OPACITY.getAttributeName(), Double.toString(doubleValue));
}
 

/**
 * The JavaScript function {@code alert()}.
 * @param message the message
 */
@JsxFunction
public void alert(final Object message) {
    // use Object as parameter and perform String conversion by ourself
    // this allows to place breakpoint here and "see" the message object and its properties
    final String stringMessage = Context.toString(message);
    final AlertHandler handler = getWebWindow().getWebClient().getAlertHandler();
    if (handler == null) {
        LOG.warn("window.alert(\"" + stringMessage + "\") no alert handler installed");
    }
    else {
        handler.handleAlert(document_.getPage(), stringMessage);
    }
}
 

/**
 * {@inheritDoc}
 */
@Override
public String getPropertyValue(final String name) {
    // need to invoke the getter to take care of the default value
    final Object property = getProperty(this, camelize(name));
    if (property == NOT_FOUND) {
        return super.getPropertyValue(name);
    }
    return Context.toString(property);
}
 

/**
 * For instantiation in JavaScript.
 * @param cx the current context
 * @param args the URIs
 * @param ctorObj the function object
 * @param inNewExpr Is new or not
 * @return the java object to allow JavaScript to access
 * @throws Exception in case of problem
 */
@JsxConstructor
public static Scriptable jsConstructor(
        final Context cx, final Object[] args, final Function ctorObj,
        final boolean inNewExpr) throws Exception {
    if (args.length < 1 || args.length > 2) {
        throw Context.reportRuntimeError(
                "Worker Error: constructor must have one or two String parameters.");
    }

    final String url = Context.toString(args[0]);

    return new Worker(cx, getWindow(ctorObj), url);
}
 

/**
 * Sets the {@code opacity} style attribute.
 * @param opacity the new attribute
 */
@JsxSetter
public void setOpacity(final Object opacity) {
    if (ScriptRuntime.NaNobj == opacity) {
        return;
    }

    final double doubleValue;
    if (opacity instanceof Number) {
        doubleValue = ((Number) opacity).doubleValue();
    }
    else {
        String valueString = Context.toString(opacity);

        if (valueString.isEmpty()) {
            setStyleAttribute(OPACITY.getAttributeName(), valueString);
            return;
        }

        valueString = valueString.trim();
        try {
            doubleValue = Double.parseDouble(valueString);
        }
        catch (final NumberFormatException e) {
            // ignore wrong value
            return;
        }
    }

    if (Double.isNaN(doubleValue) || Double.isInfinite(doubleValue)) {
        return;
    }
    setStyleAttribute(OPACITY.getAttributeName(), Double.toString(doubleValue));
}
 

/**
 * For instantiation in JavaScript.
 * @param cx the current context
 * @param args the URIs
 * @param ctorObj the function object
 * @param inNewExpr Is new or not
 * @return the java object to allow JavaScript to access
 * @throws Exception in case of problem
 */
@JsxConstructor
public static Scriptable jsConstructor(
        final Context cx, final Object[] args, final Function ctorObj,
        final boolean inNewExpr) throws Exception {
    if (args.length < 1 || args.length > 2) {
        throw Context.reportRuntimeError(
                "Worker Error: constructor must have one or two String parameters.");
    }

    final String url = Context.toString(args[0]);

    return new Worker(cx, getWindow(ctorObj), url);
}
 

/**
 * Get the data: URL representation of the Canvas element.
 * Here we return an empty image.
 * @param type the type (optional)
 * @return the data URL
 */
@JsxFunction
public String toDataURL(final Object type) {
    if (context2d_ != null) {
        final String typeInUse;
        if (Undefined.isUndefined(type)) {
            typeInUse = null;
        }
        else {
            typeInUse = Context.toString(type);
        }
        return context2d_.toDataURL(typeInUse);
    }

    if (getBrowserVersion().hasFeature(JS_CANVAS_DATA_URL_IE_PNG)) {
        return "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAACWCAYAAABkW7XSAAAAAXNSR0IArs4c6QAAAARnQU1BAA"
            + "Cxjwv8YQUAAADGSURBVHhe7cExAQAAAMKg9U9tCF8gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
            + "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
            + "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAONUAv9QAAcDhjokAAAAASUV"
            + "ORK5CYII=";
    }

    if (getBrowserVersion().hasFeature(JS_CANVAS_DATA_URL_CHROME_PNG)) {
        return "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAACWCAYAAABkW7XSAAAEYklEQVR4Xu3UAQkAAAwCwdm/"
            + "9HI83BLIOdw5AgQIRAQWySkmAQIEzmB5AgIEMgIGK1OVoAQIGCw/QIBARsBgZaoSlAABg+UHCBDICBisTFWCEiBgsPwAAQIZAYO"
            + "VqUpQAgQMlh8gQCAjYLAyVQlKgIDB8gMECGQEDFamKkEJEDBYfoAAgYyAwcpUJSgBAgbLDxAgkBEwWJmqBCVAwGD5AQIEMgIGK1"
            + "OVoAQIGCw/QIBARsBgZaoSlAABg+UHCBDICBisTFWCEiBgsPwAAQIZAYOVqUpQAgQMlh8gQCAjYLAyVQlKgIDB8gMECGQEDFamK"
            + "kEJEDBYfoAAgYyAwcpUJSgBAgbLDxAgkBEwWJmqBCVAwGD5AQIEMgIGK1OVoAQIGCw/QIBARsBgZaoSlAABg+UHCBDICBisTFWC"
            + "EiBgsPwAAQIZAYOVqUpQAgQMlh8gQCAjYLAyVQlKgIDB8gMECGQEDFamKkEJEDBYfoAAgYyAwcpUJSgBAgbLDxAgkBEwWJmqBCV"
            + "AwGD5AQIEMgIGK1OVoAQIGCw/QIBARsBgZaoSlAABg+UHCBDICBisTFWCEiBgsPwAAQIZAYOVqUpQAgQMlh8gQCAjYLAyVQlKgI"
            + "DB8gMECGQEDFamKkEJEDBYfoAAgYyAwcpUJSgBAgbLDxAgkBEwWJmqBCVAwGD5AQIEMgIGK1OVoAQIGCw/QIBARsBgZaoSlAABg"
            + "+UHCBDICBisTFWCEiBgsPwAAQIZAYOVqUpQAgQMlh8gQCAjYLAyVQlKgIDB8gMECGQEDFamKkEJEDBYfoAAgYyAwcpUJSgBAgbL"
            + "DxAgkBEwWJmqBCVAwGD5AQIEMgIGK1OVoAQIGCw/QIBARsBgZaoSlAABg+UHCBDICBisTFWCEiBgsPwAAQIZAYOVqUpQAgQMlh8"
            + "gQCAjYLAyVQlKgIDB8gMECGQEDFamKkEJEDBYfoAAgYyAwcpUJSgBAgbLDxAgkBEwWJmqBCVAwGD5AQIEMgIGK1OVoAQIGCw/QI"
            + "BARsBgZaoSlAABg+UHCBDICBisTFWCEiBgsPwAAQIZAYOVqUpQAgQMlh8gQCAjYLAyVQlKgIDB8gMECGQEDFamKkEJEDBYfoAAg"
            + "YyAwcpUJSgBAgbLDxAgkBEwWJmqBCVAwGD5AQIEMgIGK1OVoAQIGCw/QIBARsBgZaoSlAABg+UHCBDICBisTFWCEiBgsPwAAQIZ"
            + "AYOVqUpQAgQMlh8gQCAjYLAyVQlKgIDB8gMECGQEDFamKkEJEDBYfoAAgYyAwcpUJSgBAgbLDxAgkBEwWJmqBCVAwGD5AQIEMgI"
            + "GK1OVoAQIGCw/QIBARsBgZaoSlAABg+UHCBDICBisTFWCEiBgsPwAAQIZAYOVqUpQAgQMlh8gQCAjYLAyVQlKgIDB8gMECGQEDF"
            + "amKkEJEDBYfoAAgYyAwcpUJSgBAgbLDxAgkBEwWJmqBCVAwGD5AQIEMgIGK1OVoAQIGCw/QIBARsBgZaoSlACBB1YxAJfjJb2jA"
            + "AAAAElFTkSuQmCC";
    }

    return "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAACWCAYAAABkW7XSAAAAxUlEQVR4nO3BMQEAAADCoPVPbQhf"
        + "oAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
        + "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
        + "AAAAAAAAAAAAAAAAAAAAAAAAAAAOA1v9QAATX68/0AAAAASUVORK5CYII=";
}