Examples with ValueSource io.jmix.ui.component.data.ValueSource used on opensource projects

Example 1 with ValueSource

use of io.jmix.ui.component.data.ValueSource in project jmix by jmix-framework.

the class WebTokenList method getViewForField.

/**
 * If the value for a component is selected from the lookup screen there may be cases when lookup screen contains a list of entities loaded with a
 * view that doesn't contain all attributes, required by the token list.
 * <p>
 * The method evaluates the view that was is for loading entities in the token list
 *
 * @return a view or null if the view cannot be evaluated
 */
@Nullable
protected FetchPlan getViewForField() {
    ValueSource valueSource = getValueSource();
    if (valueSource instanceof ContainerValueSource) {
        ContainerValueSource containerValueSource = (ContainerValueSource) valueSource;
        InstanceContainer container = containerValueSource.getContainer();
        FetchPlan view = container.getFetchPlan();
        if (view != null) {
            MetaPropertyPath metaPropertyPath = containerValueSource.getMetaPropertyPath();
            FetchPlan curView = view;
            if (metaPropertyPath != null) {
                for (MetaProperty metaProperty : metaPropertyPath.getMetaProperties()) {
                    FetchPlanProperty viewProperty = curView.getProperty(metaProperty.getName());
                    if (viewProperty != null) {
                        curView = viewProperty.getFetchPlan();
                        if (curView == null)
                            return null;
                    }
                }
                MetaProperty inverseMetaProperty = metaPropertyPath.getMetaProperty().getInverse();
                if (inverseMetaProperty != null && !inverseMetaProperty.getRange().getCardinality().isMany()) {
                    curView = fetchPlans.builder(curView).add(inverseMetaProperty.getName()).build();
                }
            }
            if (curView != view) {
                return curView;
            }
        }
    }
    return null;
}

Example 2 with ValueSource

use of io.jmix.ui.component.data.ValueSource in project jmix by jmix-framework.

the class EditorBuilderProcessor method initEntity.

@Nullable
protected <E> E initEntity(EditorBuilder<E> builder, @Nullable CollectionContainer<E> container) {
    E entity;
    boolean oneToOneComposition = false;
    EntityValueSource entityValueSource = null;
    HasValue<E> field = builder.getField();
    if (field instanceof HasValueSource) {
        ValueSource valueSource = ((HasValueSource) field).getValueSource();
        if (valueSource instanceof EntityValueSource) {
            entityValueSource = (EntityValueSource) valueSource;
            oneToOneComposition = isCompositionProperty(entityValueSource);
        }
    }
    if (builder.getMode() == EditMode.CREATE || (oneToOneComposition && field.getValue() == null)) {
        if (builder.getNewEntity() == null) {
            entity = metadata.create(builder.getEntityClass());
        } else {
            entity = builder.getNewEntity();
        }
        if (container instanceof Nested) {
            initializeNestedEntity(entity, (Nested) container);
        }
        if (oneToOneComposition) {
            Object ownerEntity = entityValueSource.getItem();
            MetaProperty inverseProp = entityValueSource.getMetaPropertyPath().getMetaProperty().getInverse();
            if (inverseProp != null) {
                EntityValues.setValue(entity, inverseProp.getName(), ownerEntity);
            }
        }
        if (builder.getInitializer() != null) {
            builder.getInitializer().accept(entity);
        }
    } else {
        entity = builder.getEditedEntity();
    }
    return entity;
}

Example 3 with ValueSource

use of io.jmix.ui.component.data.ValueSource in project jmix by jmix-framework.

the class LookupBuilderProcessor method getFetchPlanForField.

/**
 * The method evaluates the fetch plan that is used for the entity in the given {@code field}
 * <p>
 * If the value for a component (e.g. {@link EntityPicker}) is selected from lookup screen then there may be cases
 * when in entities in lookup screen some attributes required in the editor are not loaded.
 *
 * @return a view or {@code null} if the fetch plan cannot be evaluated
 */
@Nullable
protected FetchPlan getFetchPlanForField(HasValue field) {
    if (field instanceof HasValueSource) {
        ValueSource valueSource = ((HasValueSource) field).getValueSource();
        if (valueSource instanceof ContainerValueSource) {
            ContainerValueSource containerValueSource = (ContainerValueSource) valueSource;
            InstanceContainer container = containerValueSource.getContainer();
            FetchPlan fetchPlan = container.getFetchPlan();
            if (fetchPlan != null) {
                MetaPropertyPath metaPropertyPath = containerValueSource.getMetaPropertyPath();
                FetchPlan curFetchPlan = fetchPlan;
                for (MetaProperty metaProperty : metaPropertyPath.getMetaProperties()) {
                    FetchPlanProperty viewProperty = curFetchPlan.getProperty(metaProperty.getName());
                    if (viewProperty != null) {
                        curFetchPlan = viewProperty.getFetchPlan();
                    }
                    if (curFetchPlan == null)
                        break;
                }
                if (curFetchPlan != fetchPlan) {
                    return curFetchPlan;
                }
            }
        }
    }
    return null;
}

Example 4 with ValueSource

use of io.jmix.ui.component.data.ValueSource in project jmix by jmix-framework.

the class EntityFieldCreationSupport method addDefaultActions.

public boolean addDefaultActions(EntityPicker entityPicker) {
    ValueSource valueSource = entityPicker.getValueSource();
    if (!(valueSource instanceof EntityValueSource)) {
        return false;
    }
    EntityValueSource entityValueSource = (EntityValueSource) entityPicker.getValueSource();
    MetaPropertyPath mpp = entityValueSource.getMetaPropertyPath();
    MetaClass metaClass = mpp.getMetaProperty().getRange().asClass();
    List<String> actionIds = componentProperties.getEntityFieldActions().get(metaClass.getName());
    if (actionIds == null || actionIds.isEmpty()) {
        return false;
    }
    addActions(entityPicker, actionIds);
    return true;
}

Example 5 with ValueSource

use of io.jmix.ui.component.data.ValueSource in project jmix by jmix-framework.

the class DateFieldImpl method valueBindingConnected.

@Override
protected void valueBindingConnected(ValueSource<V> valueSource) {
    super.valueBindingConnected(valueSource);
    if (valueSource instanceof EntityValueSource) {
        EntityValueSource entityValueSource = (EntityValueSource) valueSource;
        DataAwareComponentsTools dataAwareComponentsTools = applicationContext.getBean(DataAwareComponentsTools.class);
        dataAwareComponentsTools.setupDateFormat(this, entityValueSource);
        dataAwareComponentsTools.setupZoneId(this, entityValueSource);
        if (valueSourceStateChangeSubscription != null) {
            valueSourceStateChangeSubscription.remove();
        }
        // setup dateRange after valueSource is activated and value is set because
        // Vaadin dateField rejects value if it is not in range
        valueSourceStateChangeSubscription = valueSource.addStateChangeListener(event -> {
            if (event.getState() == BindingState.ACTIVE) {
                dataAwareComponentsTools.setupDateRange(this, entityValueSource);
            }
        });
    }
}