Examples with IObjectDescriptor org.eclipse.e4.core.di.suppliers.IObjectDescriptor used on opensource projects

Example 6 with IObjectDescriptor

use of org.eclipse.e4.core.di.suppliers.IObjectDescriptor in project eclipse.platform.runtime by eclipse.

the class PreferencesObjectSupplier method getNodePath.

private String getNodePath(IObjectDescriptor descriptor, Class<?> requestingObject) {
    if (descriptor == null)
        return null;
    Preference qualifier = descriptor.getQualifier(Preference.class);
    String nodePath = qualifier.nodePath();
    if (nodePath == null || nodePath.length() == 0) {
        if (requestingObject == null)
            return null;
        nodePath = FrameworkUtil.getBundle(requestingObject).getSymbolicName();
    }
    return nodePath;
}

Example 7 with IObjectDescriptor

use of org.eclipse.e4.core.di.suppliers.IObjectDescriptor in project eclipse.platform.runtime by eclipse.

the class ContextObjectSupplier method get.

@Override
public void get(IObjectDescriptor[] descriptors, Object[] actualArgs, final IRequestor requestor, boolean initial, boolean track, boolean group) {
    final String[] keys = new String[descriptors.length];
    final boolean[] active = new boolean[descriptors.length];
    for (int i = 0; i < descriptors.length; i++) {
        String key = getKey(descriptors[i]);
        if ((actualArgs[i] == IInjector.NOT_A_VALUE))
            keys[i] = key;
        else if (// allow provider to override IEclipseContext
        ECLIPSE_CONTEXT_NAME.equals(key))
            keys[i] = ECLIPSE_CONTEXT_NAME;
        else
            keys[i] = null;
        if (descriptors[i] == null)
            active[i] = false;
        else
            active[i] = (descriptors[i].hasQualifier(Active.class));
    }
    if (requestor != null && track) {
        // only track if requested
        if (initial) {
            RunAndTrack trackable = new ContextInjectionListener(context, actualArgs, keys, active, requestor, group);
            context.runAndTrack(trackable);
        } else {
            // we do track if this is done inside a computation, but don't create another runnable
            fillArgs(actualArgs, keys, active);
        }
    } else {
        if (descriptors.length > 0) {
            pauseRecording();
            try {
                fillArgs(actualArgs, keys, active);
            } finally {
                resumeRecording();
            }
        }
    }
}

Example 8 with IObjectDescriptor

use of org.eclipse.e4.core.di.suppliers.IObjectDescriptor in project eclipse.platform.runtime by eclipse.

the class OSGiObjectSupplier method get.

@Override
public Object get(IObjectDescriptor descriptor, IRequestor requestor, boolean track, boolean group) {
    final Class<?> requestingObjectClass = requestor.getRequestingObjectClass();
    final Type desiredType = descriptor.getDesiredType();
    if (BundleContext.class.equals(desiredType)) {
        final Bundle bundle = FrameworkUtil.getBundle(requestingObjectClass);
        // Iff track is request and there is no listener yet, lets track the bundle
        if (track) {
            if (!requestor2listener.containsKey(requestor)) {
                track(bundle, requestor);
            }
        // Handlers only executed once and thus don't track the BC/Bundle.
        // Still guard to now de-register a non-existing listener.
        } else if (requestor2listener.containsKey(requestor)) {
            untrack(requestor);
        }
        final BundleContext bundleContext = bundle.getBundleContext();
        if (bundleContext != null) {
            return bundleContext;
        } else if (descriptor.getQualifier(Optional.class) != null) {
            // Do not have a bundle context but requestor has marked the parameter/field optional
            return null;
        }
        // $NON-NLS-1$  //$NON-NLS-2$
        throw new InjectionException("Unable to inject BundleContext: " + bundle.getSymbolicName() + " bundle is not active or starting/stopping");
    } else if (Bundle.class.equals(desiredType)) {
        // state. However, the requestor will go away along with its bundle anyway.
        return FrameworkUtil.getBundle(requestingObjectClass);
    }
    // Annotation used with unsupported type
    return null;
}

Example 9 with IObjectDescriptor

use of org.eclipse.e4.core.di.suppliers.IObjectDescriptor in project eclipse.platform.runtime by eclipse.

the class ServiceSupplier method get.

@Override
public Object get(IObjectDescriptor descriptor, IRequestor requestor, boolean track, boolean group) {
    Type desiredType = descriptor.getDesiredType();
    Bundle b = FrameworkUtil.getBundle(requestor.getRequestingObjectClass());
    Service qualifier = descriptor.getQualifier(Service.class);
    if (desiredType instanceof ParameterizedType) {
        ParameterizedType t = (ParameterizedType) desiredType;
        if (t.getRawType() == Collections.class || t.getRawType() == List.class) {
            return handleCollection(b, t.getActualTypeArguments()[0], requestor, track && qualifier.dynamic(), qualifier);
        }
    }
    return handleSingle(b, desiredType, requestor, descriptor, track && qualifier.dynamic(), qualifier);
}

Example 10 with IObjectDescriptor

use of org.eclipse.e4.core.di.suppliers.IObjectDescriptor in project eclipse.platform.runtime by eclipse.

the class ExtendedSupplierInjectionTests method testSupplierOrdering.

/**
 * bug 428837: ensure suppliers are ranked by service.ranking
 */
@Test
public void testSupplierOrdering() {
    BundleContext bc = FrameworkUtil.getBundle(getClass()).getBundleContext();
    ExtendedObjectSupplier supplier = new ExtendedObjectSupplier() {

        @Override
        public Object get(IObjectDescriptor descriptor, IRequestor requestor, boolean track, boolean group) {
            // TODO Auto-generated method stub
            return null;
        }
    };
    Dictionary<String, Object> properties = new Hashtable<>();
    properties.put(ExtendedObjectSupplier.SERVICE_CONTEXT_KEY, EventTopic.class.getName());
    properties.put(Constants.SERVICE_RANKING, 100);
    ServiceRegistration<?> sr = bc.registerService(ExtendedObjectSupplier.SERVICE_NAME, supplier, properties);
    try {
        assertEquals(supplier, ProviderHelper.findProvider(EventTopic.class.getName(), null));
    } finally {
        sr.unregister();
    }
}