Examples with JsSet com.vaadin.client.flow.collection.JsSet used on opensource projects

Example 1 with JsSet

use of com.vaadin.client.flow.collection.JsSet in project flow by vaadin.

the class SimpleElementBindingStrategy method handleDomEvent.

private void handleDomEvent(Event event, BindingContext context) {
    assert context != null;
    Node element = context.htmlNode;
    StateNode node = context.node;
    assert element instanceof Element : "Cannot handle DOM event for a Node";
    String type = event.getType();
    NodeMap listenerMap = getDomEventListenerMap(node);
    ConstantPool constantPool = node.getTree().getRegistry().getConstantPool();
    String expressionConstantKey = (String) listenerMap.getProperty(type).getValue();
    assert expressionConstantKey != null;
    assert constantPool.has(expressionConstantKey);
    JsonObject expressionSettings = constantPool.get(expressionConstantKey);
    String[] expressions = expressionSettings.keys();
    JsonObject eventData;
    JsSet<String> synchronizeProperties = JsCollections.set();
    if (expressions.length == 0) {
        eventData = null;
    } else {
        eventData = Json.createObject();
    }
    for (String expressionString : expressions) {
        if (expressionString.startsWith(JsonConstants.SYNCHRONIZE_PROPERTY_TOKEN)) {
            String property = expressionString.substring(JsonConstants.SYNCHRONIZE_PROPERTY_TOKEN.length());
            synchronizeProperties.add(property);
        } else if (expressionString.equals(JsonConstants.MAP_STATE_NODE_EVENT_DATA)) {
            // map event.target to the closest state node
            int targetNodeId = getClosestStateNodeIdToEventTarget(node, event.getTarget());
            eventData.put(JsonConstants.MAP_STATE_NODE_EVENT_DATA, targetNodeId);
        } else if (expressionString.startsWith(JsonConstants.MAP_STATE_NODE_EVENT_DATA)) {
            // map element returned by JS to the closest state node
            String jsEvaluation = expressionString.substring(JsonConstants.MAP_STATE_NODE_EVENT_DATA.length());
            EventExpression expression = getOrCreateExpression(jsEvaluation);
            JsonValue expressionValue = expression.evaluate(event, (Element) element);
            // find the closest state node matching the expression value
            int targetNodeId = getClosestStateNodeIdToDomNode(node.getTree(), expressionValue, jsEvaluation);
            eventData.put(expressionString, targetNodeId);
        } else {
            EventExpression expression = getOrCreateExpression(expressionString);
            JsonValue expressionValue = expression.evaluate(event, (Element) element);
            eventData.put(expressionString, expressionValue);
        }
    }
    JsArray<Runnable> commands = JsCollections.array();
    synchronizeProperties.forEach(name -> commands.push(getSyncPropertyCommand(name, context)));
    Consumer<String> sendCommand = debouncePhase -> {
        commands.forEach(Runnable::run);
        sendEventToServer(node, type, eventData, debouncePhase);
    };
    boolean sendNow = resolveFilters(element, type, expressionSettings, eventData, sendCommand);
    if (sendNow) {
        // Send if there were not filters or at least one matched
        sendCommand.accept(null);
    }
}