Add AbstractFcAppRouterLayout

Author: javier-godoy

src/main/java/com/flowingcode/addons/applayout/AbstractFcAppRouterLayout.java

@@ -0,0 +1,85 @@
+/*-
+ * #%L
+ * App Layout Addon
+ * %%
+ * Copyright (C) 2018 - 2019 Flowing Code
+ * %%
+ * 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.
+ * #L%
+ */
+package com.flowingcode.addons.applayout;
+
+import java.util.Optional;
+
+import com.flowingcode.addons.applayout.AppLayout;
+import com.vaadin.flow.component.AttachEvent;
+import com.vaadin.flow.component.HasElement;
+import com.vaadin.flow.component.html.Div;
+import com.vaadin.flow.router.HasDynamicTitle;
+import com.vaadin.flow.router.PageTitle;
+import com.vaadin.flow.router.RouterLayout;
+
+/**
+ * Convenience class for using an AppLayout as a parent layout in a Flow application.
+ * Basic usage involves extending this class and implementing
+ * the {@code configure} method.
+ */
+public abstract class AbstractFcAppRouterLayout extends Div implements RouterLayout {
+
+	private static final long serialVersionUID = 1L;
+	
+	private AppLayout app;
+
+	public AbstractFcAppRouterLayout() {
+		setSizeFull();
+		getElement().getStyle().set("display", "flex");
+		getElement().getStyle().set("flex-direction", "column");
+		app = new AppLayout("");
+		app.setHeight("32px");
+		app.addClassName("compact");
+		app.setFixed(true);
+		app.setSwipeOpen(false);
+		add(app);
+	}
+
+	@Override
+	protected void onAttach(AttachEvent attachEvent) {
+		super.onAttach(attachEvent);
+	    configure(app);
+	}
+
+	protected abstract void configure(AppLayout app);
+
+	@Override
+	public final void showRouterLayoutContent(HasElement content) {
+		showRouterLayoutContent(app,content);
+	}
+	
+	protected void showRouterLayoutContent(AppLayout app, HasElement content) {
+		content.getElement().getStyle().set("flex-grow", "1");
+		content.getElement().getStyle().set("display", "flex");
+		content.getElement().getStyle().set("flex-direction", "column");
+		app.setCaption(getCaption(content));
+		RouterLayout.super.showRouterLayoutContent(content);
+	}
+
+	private String getCaption(HasElement content) {
+		if (content instanceof HasDynamicTitle) {
+			return ((HasDynamicTitle)content).getPageTitle();
+		} else {
+			return Optional.ofNullable(content.getClass().getAnnotation(PageTitle.class))
+					.map(PageTitle::value).orElse("");
+		}
+	}
+
+}