Add simple calculator test application (#12444)

Change-Id: Ie2880c9321f46a004e53ca0fa08aa43f840e6a5d

diff --git a/uitest/src/com/vaadin/tests/application/calculator/Calc.java b/uitest/src/com/vaadin/tests/application/calculator/Calc.java
new file mode 100644 (file)
index 0000000..7d080ad
--- /dev/null
+++ b/uitest/src/com/vaadin/tests/application/calculator/Calc.java
@@ -0,0 +1,190 @@
+/*
+ * Copyright 2000-2013 Vaadin Ltd.
+ * 
+ * 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.
+ */
+
+package com.vaadin.tests.application.calculator;
+
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.tests.components.AbstractTestUI;
+import com.vaadin.ui.Alignment;
+import com.vaadin.ui.Button;
+import com.vaadin.ui.Button.ClickEvent;
+import com.vaadin.ui.Button.ClickListener;
+import com.vaadin.ui.GridLayout;
+import com.vaadin.ui.HorizontalLayout;
+import com.vaadin.ui.Label;
+import com.vaadin.ui.TextArea;
+import com.vaadin.ui.TextField;
+import com.vaadin.ui.VerticalLayout;
+
+@SuppressWarnings("serial")
+public class Calc extends AbstractTestUI {
+
+    private class Log extends TextArea {
+
+        public Log() {
+            super();
+            setWidth("200px");
+        }
+
+        public void addRow(String row) {
+            setValue(getValue() + "\n" + row);
+        }
+    }
+
+    // All variables are automatically stored in the session.
+    private Double current = 0.0;
+    private double stored = 0.0;
+    private char lastOperationRequested = 'C';
+    private VerticalLayout topLayout = new VerticalLayout();
+
+    // User interface components
+    private final TextField display = new TextField("0.0");
+
+    private final Log log = new Log();
+
+    // Calculator "business logic" implemented here to keep the example
+    // minimal
+    private double calculate(char requestedOperation) {
+        if ('0' <= requestedOperation && requestedOperation <= '9') {
+            if (current == null) {
+                current = 0.0;
+            }
+            current = current * 10
+                    + Double.parseDouble("" + requestedOperation);
+            return current;
+        }
+
+        if (current == null) {
+            current = stored;
+        }
+        switch (lastOperationRequested) {
+        case '+':
+            stored += current;
+            break;
+        case '-':
+            stored -= current;
+            break;
+        case '/':
+            stored /= current;
+            break;
+        case '*':
+            stored *= current;
+            break;
+        default:
+            stored = current;
+            break;
+        }
+
+        switch (requestedOperation) {
+        case '+':
+            log.addRow(current + " +");
+            break;
+        case '-':
+            log.addRow(current + " -");
+            break;
+        case '/':
+            log.addRow(current + " /");
+            break;
+        case '*':
+            log.addRow(current + " x");
+            break;
+        case '=':
+            log.addRow(current + " =");
+            log.addRow("------------");
+            log.addRow("" + stored);
+            break;
+        }
+
+        lastOperationRequested = requestedOperation;
+        current = null;
+        if (requestedOperation == 'C') {
+            log.addRow("0.0");
+            stored = 0.0;
+        }
+        return stored;
+    }
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        setContent(topLayout);
+
+        // Create the main layout for our application (4 columns, 5 rows)
+        final GridLayout layout = new GridLayout(4, 5);
+
+        topLayout.setMargin(true);
+        topLayout.setSpacing(true);
+        Label title = new Label("Calculator");
+        topLayout.addComponent(title);
+        topLayout.addComponent(log);
+
+        HorizontalLayout horizontalLayout = new HorizontalLayout();
+        horizontalLayout.setSpacing(true);
+        horizontalLayout.addComponent(layout);
+        horizontalLayout.addComponent(log);
+        topLayout.addComponent(horizontalLayout);
+
+        // Create a result label that over all 4 columns in the first row
+        layout.addComponent(display, 0, 0, 3, 0);
+        layout.setComponentAlignment(display, Alignment.MIDDLE_RIGHT);
+        display.setSizeUndefined();
+        display.setId("display");
+
+        // The operations for the calculator in the order they appear on the
+        // screen (left to right, top to bottom)
+        String[] operations = new String[] { "7", "8", "9", "/", "4", "5", "6",
+                "*", "1", "2", "3", "-", "0", "=", "C", "+" };
+
+        for (String caption : operations) {
+
+            // Create a button and use this application for event handling
+            Button button = new Button(caption);
+            button.setHeight("30px");
+            button.setWidth("40px");
+            button.addClickListener(new ClickListener() {
+                @Override
+                public void buttonClick(ClickEvent event) {
+                    // Get the button that was clicked
+                    Button button = event.getButton();
+
+                    // Get the requested operation from the button caption
+                    char requestedOperation = button.getCaption().charAt(0);
+
+                    // Calculate the new value
+                    double newValue = calculate(requestedOperation);
+
+                    // Update the result label with the new value
+                    display.setValue("" + newValue);
+                }
+            });
+            button.setId("button_" + caption);
+
+            // Add the button to our main layout
+            layout.addComponent(button);
+        }
+
+    }
+
+    @Override
+    protected String getTestDescription() {
+        return "Provide test application for generic testing purposes";
+    }
+
+    @Override
+    protected Integer getTicketNumber() {
+        return 12444;
+    }
+
+}