CCM NG: A reusable ConfirmDialog for the Vaadin prototype

git-svn-id: https://svn.libreccm.org/ccm/ccm_ng@5022 8810af33-2d31-482b-a856-94f89814c4df

ccm-core/src/main/java/org/libreccm/ui/ConfirmDialog.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2017 LibreCCM Foundation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+package org.libreccm.ui;
+
+import com.vaadin.ui.Button;
+import com.vaadin.ui.HorizontalLayout;
+import com.vaadin.ui.Label;
+import com.vaadin.ui.VerticalLayout;
+import com.vaadin.ui.Window;
+import org.libreccm.core.UnexpectedErrorException;
+
+import java.util.concurrent.Callable;
+
+/**
+ *
+ * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
+ */
+public class ConfirmDialog extends Window {
+
+    private static final long serialVersionUID = -3953818045293474190L;
+
+    private final Callable<Void> confirmedAction;
+    private final Callable<Void> cancelAction;
+
+    private Label messageLabel;
+    private Button confirmButton;
+    private Button cancelButton;
+
+    public ConfirmDialog(final Callable<Void> confirmedAction) {
+        this.confirmedAction = confirmedAction;
+        this.cancelAction = () -> {
+            close();
+            return null;
+        };
+        addWidgets();
+    }
+
+    public ConfirmDialog(final Callable<Void> confirmedAction,
+                         final Callable<Void> cancelAction) {
+        this.confirmedAction = confirmedAction;
+        this.cancelAction = cancelAction;
+        addWidgets();
+    }
+
+    private void addWidgets() {
+
+        messageLabel = new Label("");
+
+        confirmButton = new Button("OK");
+        confirmButton.addClickListener(event -> {
+            try {
+                confirmedAction.call();
+            } catch (Exception ex) {
+                throw new UnexpectedErrorException(ex);
+            }
+        });
+
+        cancelButton = new Button("Cancel");
+        cancelButton.addClickListener(event -> {
+            try {
+                cancelAction.call();
+            } catch (Exception ex) {
+                throw new UnexpectedErrorException(ex);
+            }
+        });
+
+        final HorizontalLayout buttonsLayout = new HorizontalLayout(
+            confirmButton, cancelButton);
+        final VerticalLayout layout = new VerticalLayout(messageLabel,
+                                                         buttonsLayout);
+        setContent(layout);
+    }
+
+    public String getMessage() {
+        return messageLabel.getValue();
+    }
+    
+    public void setMessage(final String message) {
+        messageLabel.setValue(message);
+    }
+    
+    public Button getConfirmButton() {
+        return confirmButton;
+    }
+    
+    public Button getCancelButton() {
+        return cancelButton;
+    }
+    
+}