Move Vaadin 7 CustomField to compatibility package

Change-Id: Ie1d37fd2d249bf35e953f095fa80a6905a135793

client/src/main/java/com/vaadin/client/legacy/ui/LegacyCustomFieldConnector.java

@@ -1,25 +0,0 @@
-/*
- * 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.client.legacy.ui;
-
-import com.vaadin.client.ui.customfield.CustomFieldConnector;
-import com.vaadin.shared.ui.Connect;
-import com.vaadin.v7.ui.CustomField;
-
-@Connect(value = CustomField.class)
-public class LegacyCustomFieldConnector extends CustomFieldConnector {
-
-}

compatibility-client/src/main/java/com/vaadin/v7/client/ui/customfield/CustomFieldConnector.java

@@ -0,0 +1,124 @@
+/*
+ * 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 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.HasComponentsConnector;
+import com.vaadin.client.ui.AbstractFieldConnector;
+import com.vaadin.client.ui.VCustomComponent;
+import com.vaadin.shared.ui.Connect;
+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 VCustomComponent getWidget() {
+        return (VCustomComponent) super.getWidget();
+    }
+
+    @Override
+    public void updateCaption(ComponentConnector connector) {
+        // NOP, custom field does not render the caption of its content
+    }
+
+    @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;
+        }
+    }
+
+}