Data model visualization #4739

jmix-datatools/datatools-flowui-starter/src/main/java/io/jmix/autoconfigure/datatoolsflowui/DatatoolsFlowuiAutoConfiguration.java

@@ -19,12 +19,22 @@
 import io.jmix.core.CoreConfiguration;
 import io.jmix.datatools.DatatoolsConfiguration;
 import io.jmix.datatoolsflowui.DatatoolsFlowuiConfiguration;
+import io.jmix.datatoolsflowui.view.navigation.DataDiagramViewSupport;
+import io.jmix.datatoolsflowui.view.navigation.Impl.DataDiagramViewSupportImpl;
 import io.jmix.flowui.FlowuiConfiguration;
 import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Import;
 
 @AutoConfiguration
 @Import({CoreConfiguration.class, FlowuiConfiguration.class, DatatoolsConfiguration.class,
         DatatoolsFlowuiConfiguration.class})
 public class DatatoolsFlowuiAutoConfiguration {
+
+    @Bean("flowui_DataDiagramViewSupport")
+    @ConditionalOnMissingBean(name = "tabmod_TabbedModeDataDiagramViewSupport")
+    public DataDiagramViewSupport loginViewSupport() {
+        return new DataDiagramViewSupportImpl();
+    }
 }

jmix-datatools/datatools-flowui/src/main/java/io/jmix/datatoolsflowui/view/datadiagram/DataDiagramView.java

@@ -0,0 +1,44 @@
+package io.jmix.datatoolsflowui.view.datadiagram;
+
+import com.vaadin.flow.router.Route;
+import com.vaadin.flow.server.streams.DownloadHandler;
+import com.vaadin.flow.server.streams.DownloadResponse;
+import io.jmix.datatools.datamodel.DataModelSupport;
+import io.jmix.flowui.component.image.JmixImage;
+import io.jmix.flowui.view.*;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.io.ByteArrayInputStream;
+
+@Route(value = "datatl/data-diagram", layout = DefaultMainViewParent.class)
+@ViewController(id = "datatl_dataDiagramView")
+@ViewDescriptor(path = "data-diagram-view.xml")
+public class DataDiagramView extends StandardView {
+
+    @Autowired
+    protected DataModelSupport dataModelSupport;
+
+    @ViewComponent
+    private JmixImage<Object> diagramImage;
+
+    @Subscribe
+    public void onBeforeShow(final BeforeShowEvent event) {
+        generateDiagram();
+    }
+
+    public void generateDiagram() {
+        // hack to passing filtered entities list to this view that open in a neighboring tab
+        byte[] rawResult = dataModelSupport.filteredModelsCount() == dataModelSupport.getDataModelProvider().modelsCount()
+                ? dataModelSupport.generateDiagram()
+                : dataModelSupport.generateFilteredDiagram();
+
+        DownloadHandler downloadHandler = DownloadHandler.fromInputStream(e ->
+                new DownloadResponse(
+                        new ByteArrayInputStream(rawResult),
+                        "data-model-er-diagram.png",
+                        null,
+                        rawResult.length));
+
+        diagramImage.setSrc(downloadHandler);
+    }
+}