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package com.vaadin.tests.application.calculator;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractReindeerTestUI;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;
import com.vaadin.v7.ui.Table;
import com.vaadin.v7.ui.Table.ColumnHeaderMode;
import com.vaadin.v7.ui.TextField;
@SuppressWarnings("serial")
public class Calc extends AbstractReindeerTestUI {
private class Log extends VerticalLayout {
private Table table;
private Button addCommentButton;
private int line = 0;
public Log() {
super();
table = new Table();
table.setSizeFull();
setWidth("200px");
setHeight("100%");
table.setColumnHeaderMode(ColumnHeaderMode.HIDDEN);
table.addContainerProperty("Operation", String.class, "");
addComponent(table);
addCommentButton = new Button("Add Comment");
addCommentButton.setWidth("100%");
addCommentButton.addClickListener(event -> {
final Window w = new Window("Add comment");
VerticalLayout vl = new VerticalLayout();
vl.setMargin(true);
final TextField tf = new TextField();
tf.setSizeFull();
vl.addComponent(tf);
HorizontalLayout hl = new HorizontalLayout();
Button okButton = new Button("OK");
okButton.setWidth("100%");
okButton.addClickListener(event2 -> {
addRow("[ " + tf.getValue() + " ]");
tf.setValue("");
w.close();
removeWindow(w);
});
Button cancelButton = new Button("Cancel");
cancelButton.setWidth("100%");
cancelButton.addClickListener(event2 -> {
tf.setValue("");
w.close();
removeWindow(w);
});
hl.addComponent(cancelButton);
hl.addComponent(okButton);
hl.setSpacing(true);
hl.setWidth("100%");
vl.addComponent(hl);
vl.setSpacing(true);
w.setContent(vl);
addWindow(w);
});
addComponent(addCommentButton);
setExpandRatio(table, 1);
setSpacing(true);
}
public void addRow(String row) {
Integer id = ++line;
table.addItem(new Object[] { row }, id);
table.setCurrentPageFirstItemIndex(line + 1);
}
}
// 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();
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.setSpacing(true);
layout.addComponent(display, 0, 0, 3, 0);
layout.setComponentAlignment(display, Alignment.MIDDLE_RIGHT);
display.setSizeFull();
display.setId("display");
display.setValue("0.0");
// The operations for the calculator in the order they appear on the
// screen (left to right, top to bottom)
String[] operations = { "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.setWidth("40px");
button.addClickListener(event -> {
// Get the button that was clicked
Button b = event.getButton();
// Get the requested operation from the button caption
char requestedOperation = b.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;
}
}
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