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- /*
- * Copyright 2000-2016 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
- package com.vaadin.v7.client.ui.customfield;
-
- import java.util.Collections;
- import java.util.List;
- import java.util.logging.Logger;
-
- import com.google.gwt.event.shared.HandlerRegistration;
- import com.google.gwt.user.client.ui.Widget;
- import com.vaadin.client.ComponentConnector;
- import com.vaadin.client.ConnectorHierarchyChangeEvent;
- import com.vaadin.client.ConnectorHierarchyChangeEvent.ConnectorHierarchyChangeHandler;
- import com.vaadin.client.Focusable;
- import com.vaadin.client.HasComponentsConnector;
- import com.vaadin.client.communication.StateChangeEvent;
- import com.vaadin.shared.ui.Connect;
- import com.vaadin.v7.client.ui.AbstractFieldConnector;
- import com.vaadin.v7.client.ui.VCustomField;
- import com.vaadin.v7.ui.CustomField;
-
- @Connect(value = CustomField.class)
- public class CustomFieldConnector extends AbstractFieldConnector
- implements HasComponentsConnector, ConnectorHierarchyChangeHandler {
-
- List<ComponentConnector> childComponents;
-
- /**
- * Default constructor
- */
- public CustomFieldConnector() {
- addConnectorHierarchyChangeHandler(this);
- }
-
- @Override
- public VCustomField getWidget() {
- return (VCustomField) super.getWidget();
- }
-
- @Override
- public void updateCaption(ComponentConnector connector) {
- // NOP, custom field does not render the caption of its content
- }
-
- @Override
- public void onStateChanged(StateChangeEvent stateChangeEvent) {
- super.onStateChanged(stateChangeEvent);
- if (getState().focusDelegate != null) {
- Widget widget = ((ComponentConnector) getState().focusDelegate)
- .getWidget();
- if (widget instanceof Focusable) {
- getWidget().setFocusDelegate((Focusable) widget);
- } else if (widget instanceof com.google.gwt.user.client.ui.Focusable) {
- getWidget().setFocusDelegate(
- (com.google.gwt.user.client.ui.Focusable) widget);
- } else {
- getLogger().warning(
- "The given focus delegate does not implement Focusable: "
- + widget.getClass().getName());
- }
- } else {
- getWidget().setFocusDelegate((Focusable) null);
- }
-
- }
-
- private static Logger getLogger() {
- return Logger.getLogger(CustomFieldConnector.class.getName());
- }
-
- @Override
- public void onConnectorHierarchyChange(
- ConnectorHierarchyChangeEvent event) {
- // We always have 1 child, unless the child is hidden
- getWidget().setWidget(getContentWidget());
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.vaadin.client.HasComponentsConnector#getChildren()
- */
- @Override
- public List<ComponentConnector> getChildComponents() {
- if (childComponents == null) {
- return Collections.emptyList();
- }
-
- return childComponents;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.vaadin.client.HasComponentsConnector#setChildren
- * (java.util.Collection)
- */
- @Override
- public void setChildComponents(List<ComponentConnector> childComponents) {
- this.childComponents = childComponents;
- }
-
- @Override
- public HandlerRegistration addConnectorHierarchyChangeHandler(
- ConnectorHierarchyChangeHandler handler) {
- return ensureHandlerManager()
- .addHandler(ConnectorHierarchyChangeEvent.TYPE, handler);
- }
-
- /**
- * Returns the content (only/first child) of the container.
- *
- * @return child connector or null if none (e.g. invisible or not set on
- * server)
- */
- protected ComponentConnector getContent() {
- List<ComponentConnector> children = getChildComponents();
- if (children.isEmpty()) {
- return null;
- } else {
- return children.get(0);
- }
- }
-
- /**
- * Returns the widget (if any) of the content of the container.
- *
- * @return widget of the only/first connector of the container, null if no
- * content or if there is no widget for the connector
- */
- protected Widget getContentWidget() {
- ComponentConnector content = getContent();
- if (null != content) {
- return content.getWidget();
- } else {
- return null;
- }
- }
-
- }
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