Make it possible to better customize SpecificConfigComponent

and add a demo how this can be done

See #316

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 3.2.5
+* Make it possible to better customize ``SpecificConfigComponent``
+
 ## 3.2.4
 * Updated dependencies
 

vaadin-grid-exporter-demo/src/main/java/software/xdev/vaadin/gridexport/example/DemoView.java

@@ -16,6 +16,7 @@
 import software.xdev.vaadin.grid_exporter.GridExporter;
 import software.xdev.vaadin.grid_exporter.jasper.config.JasperConfigsLocalization;
 import software.xdev.vaadin.gridexport.example.jsonext.JsonGridExporterProvider;
+import software.xdev.vaadin.gridexport.example.pre_defined_title.PredefinedTitleProvider;
 
 
 @PageTitle("GridExport Examples")
@@ -45,6 +46,12 @@ public DemoView()
 				VaadinIcon.PRINT.create(),
 				e -> GridExporter.newWithDefaults(this.grExamples)
 					.loadFromProvider(new JsonGridExporterProvider())
+					.open()),
+			new Button(
+				"Export (Predefined title)",
+				VaadinIcon.PRINT.create(),
+				e -> new GridExporter<>(this.grExamples)
+					.loadFromProvider(new PredefinedTitleProvider("Custom title!"))
 					.open())
 		);
 

vaadin-grid-exporter-demo/src/main/java/software/xdev/vaadin/gridexport/example/pre_defined_title/PredefinedTitleProvider.java

@@ -0,0 +1,65 @@
+package software.xdev.vaadin.gridexport.example.pre_defined_title;
+
+import java.util.List;
+
+import software.xdev.dynamicreports.jasper.builder.JasperReportBuilder;
+import software.xdev.dynamicreports.jasper.builder.export.Exporters;
+import software.xdev.dynamicreports.jasper.builder.export.JasperPdfExporterBuilder;
+import software.xdev.vaadin.grid_exporter.GridExporterProvider;
+import software.xdev.vaadin.grid_exporter.Translator;
+import software.xdev.vaadin.grid_exporter.jasper.config.JasperConfigsLocalization;
+import software.xdev.vaadin.grid_exporter.jasper.config.header.HeaderConfigComponent;
+import software.xdev.vaadin.grid_exporter.jasper.config.highlight.HighlightConfigComponent;
+import software.xdev.vaadin.grid_exporter.jasper.config.page.PageConfigComponent;
+import software.xdev.vaadin.grid_exporter.jasper.config.title.TitleConfig;
+import software.xdev.vaadin.grid_exporter.jasper.config.title.TitleConfigComponent;
+import software.xdev.vaadin.grid_exporter.jasper.format.AbstractJasperReportFormat;
+
+
+public class PredefinedTitleProvider extends GridExporterProvider
+{
+	public PredefinedTitleProvider(final String predefinedTitle)
+	{
+		super(
+			JasperConfigsLocalization.DEFAULT_VALUES,
+			List.of(
+				new PredefinedTitlePdfFormat(predefinedTitle)
+			));
+	}
+
+	public static class PredefinedTitlePdfFormat extends AbstractJasperReportFormat<JasperPdfExporterBuilder>
+	{
+		public PredefinedTitlePdfFormat(final String defaultTitle)
+		{
+			super(
+				"PDF",
+				"pdf",
+				"application/pdf",
+				true,
+				true,
+				JasperReportBuilder::toPdf,
+				Exporters::pdfExporter
+			);
+			this.withConfigComponents(
+				translator -> new PreDefinedTitleConfigComponent(translator, defaultTitle),
+				HeaderConfigComponent::new,
+				HighlightConfigComponent::new,
+				PageConfigComponent::new
+			);
+		}
+	}
+
+
+	public static class PreDefinedTitleConfigComponent extends TitleConfigComponent
+	{
+		public PreDefinedTitleConfigComponent(final Translator translator, final String defaultTitle)
+		{
+			super(translator);
+			this.setNewConfigSupplier(() -> {
+				final TitleConfig titleConfig = new TitleConfig();
+				titleConfig.setTitle(defaultTitle);
+				return titleConfig;
+			});
+		}
+	}
+}

vaadin-grid-exporter/src/main/java/software/xdev/vaadin/grid_exporter/format/SpecificConfigComponent.java

@@ -29,9 +29,9 @@ public abstract class SpecificConfigComponent<T extends SpecificConfig>
 	extends Composite<FormLayout>
 	implements Translator
 {
-	protected final Translator translator;
-	protected final Supplier<T> newConfigSupplier;
-	protected final String header;
+	protected Translator translator;
+	protected Supplier<T> newConfigSupplier;
+	protected String header;
 
 	protected Binder<T> binder = new Binder<>();
 
@@ -40,16 +40,36 @@ protected SpecificConfigComponent(
 		final Supplier<T> newConfigSupplier,
 		final String headerToTranslate)
 	{
-		this.translator = Objects.requireNonNull(translator);
-		this.newConfigSupplier = Objects.requireNonNull(newConfigSupplier);
-		this.header = this.translate(Objects.requireNonNull(headerToTranslate));
+		this.setTranslator(translator);
+		this.setNewConfigSupplier(newConfigSupplier);
+		this.setHeaderAndTranslate(headerToTranslate);
 
 		this.getContent().setResponsiveSteps(
 			new FormLayout.ResponsiveStep("0", 1),
 			new FormLayout.ResponsiveStep("400px", 2)
 		);
 	}
 
+	protected void setTranslator(final Translator translator)
+	{
+		this.translator = Objects.requireNonNull(translator);
+	}
+
+	protected void setNewConfigSupplier(final Supplier<T> newConfigSupplier)
+	{
+		this.newConfigSupplier = Objects.requireNonNull(newConfigSupplier);
+	}
+
+	protected void setHeader(final String header)
+	{
+		this.header = header;
+	}
+
+	protected void setHeaderAndTranslate(final String headerToTranslate)
+	{
+		this.setHeader(this.translate(headerToTranslate));
+	}
+
 	public Supplier<T> getNewConfigSupplier()
 	{
 		return this.newConfigSupplier;