Examples with PendingJavaScriptInvocation com.vaadin.flow.component.internal.PendingJavaScriptInvocation used on opensource projects

Example 11 with PendingJavaScriptInvocation

use of com.vaadin.flow.component.internal.PendingJavaScriptInvocation in project flow by vaadin.

the class Element method scheduleJavaScriptInvocation.

private PendingJavaScriptResult scheduleJavaScriptInvocation(String expression, Stream<Serializable> parameters) {
    StateNode node = getNode();
    JavaScriptInvocation invocation = new JavaScriptInvocation(expression, parameters.toArray(Serializable[]::new));
    PendingJavaScriptInvocation pending = new PendingJavaScriptInvocation(node, invocation);
    node.runWhenAttached(ui -> ui.getInternals().getStateTree().beforeClientResponse(node, context -> {
        if (!pending.isCanceled()) {
            context.getUI().getInternals().addJavaScriptInvocation(pending);
        }
    }));
    return pending;
}

Example 12 with PendingJavaScriptInvocation

use of com.vaadin.flow.component.internal.PendingJavaScriptInvocation in project flow by vaadin.

the class UidlWriter method createUidl.

/**
 * Creates a JSON object containing all pending changes to the given UI.
 *
 * @param ui
 *            The {@link UI} whose changes to write
 * @param async
 *            True if this message is sent by the server asynchronously,
 *            false if it is a response to a client message
 * @param resync
 *            True iff the client should be asked to resynchronize
 * @return JSON object containing the UIDL response
 */
public JsonObject createUidl(UI ui, boolean async, boolean resync) {
    JsonObject response = Json.createObject();
    UIInternals uiInternals = ui.getInternals();
    VaadinSession session = ui.getSession();
    VaadinService service = session.getService();
    // Purge pending access calls as they might produce additional changes
    // to write out
    service.runPendingAccessTasks(session);
    // Paints components
    getLogger().debug("* Creating response to client");
    int syncId = service.getDeploymentConfiguration().isSyncIdCheckEnabled() ? uiInternals.getServerSyncId() : -1;
    response.put(ApplicationConstants.SERVER_SYNC_ID, syncId);
    if (resync) {
        response.put(ApplicationConstants.RESYNCHRONIZE_ID, true);
    }
    int nextClientToServerMessageId = uiInternals.getLastProcessedClientToServerId() + 1;
    response.put(ApplicationConstants.CLIENT_TO_SERVER_ID, nextClientToServerMessageId);
    SystemMessages messages = service.getSystemMessages(ui.getLocale(), null);
    JsonObject meta = new MetadataWriter().createMetadata(ui, false, async, messages);
    if (meta.keys().length > 0) {
        response.put("meta", meta);
    }
    JsonArray stateChanges = Json.createArray();
    encodeChanges(ui, stateChanges);
    populateDependencies(response, uiInternals.getDependencyList(), new ResolveContext(service, session.getBrowser()));
    if (uiInternals.getConstantPool().hasNewConstants()) {
        response.put("constants", uiInternals.getConstantPool().dumpConstants());
    }
    if (stateChanges.length() != 0) {
        response.put("changes", stateChanges);
    }
    List<PendingJavaScriptInvocation> executeJavaScriptList = uiInternals.dumpPendingJavaScriptInvocations();
    if (!executeJavaScriptList.isEmpty()) {
        response.put(JsonConstants.UIDL_KEY_EXECUTE, encodeExecuteJavaScriptList(executeJavaScriptList));
    }
    if (service.getDeploymentConfiguration().isRequestTiming()) {
        response.put("timings", createPerformanceData(ui));
    }
    uiInternals.incrementServerId();
    return response;
}