feat: add option to copy stacktrace details to clipboard

Close #37

Author: paodb

pom.xml

@@ -130,6 +130,11 @@
 			<artifactId>javax.annotation-api</artifactId>
 			<version>1.3.2</version>
 		</dependency>
+		<dependency>
+		   <groupId>org.vaadin.olli</groupId>
+		   <artifactId>clipboardhelper</artifactId>
+		   <version>1.2.0</version>
+		</dependency>		
     </dependencies>
 
     <build>

src/main/java/com/flowingcode/vaadin/addons/errorwindow/ErrorWindow.java

@@ -23,6 +23,7 @@
 import com.vaadin.flow.component.Component;
 import com.vaadin.flow.component.Html;
 import com.vaadin.flow.component.button.Button;
+import com.vaadin.flow.component.button.ButtonVariant;
 import com.vaadin.flow.component.dependency.CssImport;
 import com.vaadin.flow.component.dialog.Dialog;
 import com.vaadin.flow.component.html.Div;
@@ -35,6 +36,7 @@
 import java.util.UUID;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.vaadin.olli.ClipboardHelper;
 
 /**
  * Component to visualize an error, caused by an exception, as a modal sub-window. <br>
@@ -145,11 +147,21 @@ private VerticalLayout createMainLayout() {
     mainLayout.setHorizontalComponentAlignment(Alignment.START, errorLabel);
 
     HorizontalLayout buttonsLayout = new HorizontalLayout();
+    buttonsLayout.setWidthFull();
     buttonsLayout.setSpacing(true);
     buttonsLayout.setPadding(false);
     buttonsLayout.setMargin(false);
 
     if (!productionMode) {
+      // copy details to clipboard button
+      Button clipboarButton = new Button(i18n.getClipboard());
+      clipboarButton.addThemeVariants(ButtonVariant.LUMO_TERTIARY);
+      ClipboardHelper clipboardHelper = new ClipboardHelper(getStackTrace(), clipboarButton);
+      buttonsLayout.add(clipboardHelper);
+      buttonsLayout.setAlignSelf(Alignment.START, clipboardHelper);
+      buttonsLayout.setFlexGrow(1.0, clipboardHelper);
+            
+      // show details button
       Button button = createDetailsButtonLayout();
       buttonsLayout.add(button);
       mainLayout.add(createExceptionTraceLayout());
@@ -202,14 +214,18 @@ protected Component createStackTraceArea() {
     area.setClassName("stacktrace");
     area.setWidthFull();
     area.setHeight("15em");
+    area.add(getStackTrace());
+    return area;
+  }
+
+  private String getStackTrace() {
     final ByteArrayOutputStream baos = new ByteArrayOutputStream();
     final PrintWriter pw = new PrintWriter(baos);
     cause.printStackTrace(pw);
     pw.flush();
-    area.add(baos.toString());
-    return area;
+    return baos.toString();
   }
-
+  
   protected Html createErrorLabel() {
     String label = errorMessage == null ? i18n.getDefaultErrorMessage() : errorMessage;
     if (productionMode) {

src/main/java/com/flowingcode/vaadin/addons/errorwindow/ErrorWindowI18n.java

@@ -33,13 +33,15 @@ public class ErrorWindowI18n {
   private String close;
   private String details;
   private String defaultErrorMessage;
+  private String clipboard;
 
   private ErrorWindowI18n() {
     this.caption = "An error has occurred";
     this.instructions = "Please report the following code to your system administrator";
     this.close = "Close";
     this.details = "Show error details";
     this.defaultErrorMessage = "Please contact the system administrator for more information.";
+    this.clipboard = "Copy details to clipboard";
   }
 
   /** @return a new instance with the default messages */
@@ -102,4 +104,15 @@ public void setDefaultErrorMessage(final String defaultErrorMessage) {
   public String getDefaultErrorMessage() {
     return this.defaultErrorMessage;
   }
+
+  /** @return returns the text for the "Copy details to clipboard" button. */
+  public String getClipboard() {
+    return clipboard;
+  }
+
+  /** Sets the text for the "Copy details to clipboard" button. */
+  public void setClipboard(String clipboard) {
+    this.clipboard = clipboard;
+  }
+  
 }