Add a calculator example, taken from w3c document.

The example got slightly modified.
Not working perfectly (due to internal logic of the example).

Change-Id: I4698688dd724497518aadbe5155a280329074615
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

7 files changed, 617 insertions, 0 deletions

diff --git a/examples/calculator-common/calculator.scxml b/examples/calculator-common/calculator.scxml
new file mode 100644
index 0000000..2b1e926
--- /dev/null
+++ b/examples/calculator-common/calculator.scxml
@@ -0,0 +1,164 @@
+<?xml version="1.0" ?>
+<scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0"
+       initial="wrapper" datamodel="ecmascript" name="Calculator">
+    <datamodel>
+         <data id="long_expr" />
+         <data id="short_expr" />
+         <data id="res" />
+    </datamodel>
+    <state id="wrapper" initial="on">
+        <state id="on" initial="ready">
+            <onentry>
+                <send event="DISPLAY.UPDATE" />
+            </onentry>
+            <state id="ready" initial="begin">
+                <state id="begin">
+                    <transition event="OPER.MINUS" target="negated1" />
+                    <onentry>
+                        <assign location="long_expr" expr="''" />
+                        <assign location="short_expr" expr="0" />
+                        <assign location="res" expr="0" />
+                        <send event="DISPLAY.UPDATE" />
+                    </onentry>
+                </state>
+                <state id="result">
+                </state>
+                <transition event="OPER" target="opEntered" />
+                <transition event="DIGIT.0" target="zero1">
+                    <assign location="short_expr" expr="''" />
+                </transition>
+                <transition event="DIGIT" target="int1">
+                    <assign location="short_expr" expr="''" />
+                </transition>
+                <transition event="POINT" target="frac1">
+                    <assign location="short_expr" expr="''" />
+                </transition>
+            </state>
+            <state id="negated1">
+                <onentry>
+                    <assign location="short_expr" expr="'-'" />
+                    <send event="DISPLAY.UPDATE" />
+                </onentry>
+                <transition event="DIGIT.0" target="zero1" />
+                <transition event="DIGIT" target="int1" />
+                <transition event="POINT" target="frac1" />
+            </state>
+            <state id="operand1">
+                <state id="zero1">
+                    <transition event="DIGIT" cond="_event.name != 'DIGIT.0'" target="int1" />
+                    <transition event="POINT" target="frac1" />
+                </state>
+                <state id="int1">
+                    <transition event="POINT" target="frac1" />
+                    <transition event="DIGIT">
+                        <assign location="short_expr" expr="short_expr+_event.name.substr(_event.name.lastIndexOf('.')+1)" />
+                        <send event="DISPLAY.UPDATE" />
+                    </transition>
+                    <onentry>
+                        <assign location="short_expr" expr="short_expr+_event.name.substr(_event.name.lastIndexOf('.')+1)" />
+                        <send event="DISPLAY.UPDATE" />
+                    </onentry>
+                </state>
+                <state id="frac1">
+                    <onentry>
+                        <assign location="short_expr" expr="short_expr+'.'" />
+                        <send event="DISPLAY.UPDATE" />
+                    </onentry>
+                    <transition event="DIGIT">
+                        <assign location="short_expr" expr="short_expr+_event.name.substr(_event.name.lastIndexOf('.')+1)" />
+                        <send event="DISPLAY.UPDATE" />
+                    </transition>
+                </state>
+                <transition event="OPER" target="opEntered" />
+            </state>
+            <state id="opEntered">
+                <transition event="OPER.MINUS" target="negated2" />
+                <transition event="POINT" target="frac2" />
+                <transition event="DIGIT.0" target="zero2" />
+                <transition event="DIGIT" target="int2" />
+                <onentry>
+                    <raise event="CALC.SUB" />
+                    <send target="#_internal" event="OP.INSERT">
+                        <param name="operator" expr="_event.name" />
+                    </send>
+                </onentry>
+            </state>
+            <state id="negated2">
+                <onentry>
+                    <assign location="short_expr" expr="'-'" />
+                    <send event="DISPLAY.UPDATE" />
+                </onentry>
+                <transition event="DIGIT.0" target="zero2" />
+                <transition event="DIGIT" target="int2" />
+                <transition event="POINT" target="frac2" />
+            </state>
+            <state id="operand2">
+                <state id="zero2">
+                    <transition event="DIGIT" cond="_event.name != 'DIGIT.0'" target="int2" />
+                    <transition event="POINT" target="frac2" />
+                </state>
+                <state id="int2">
+                    <transition event="DIGIT">
+                        <assign location="short_expr" expr="short_expr+_event.name.substr(_event.name.lastIndexOf('.')+1)" />
+                        <send event="DISPLAY.UPDATE" />
+                    </transition>
+                    <onentry>
+                        <assign location="short_expr" expr="short_expr+_event.name.substr(_event.name.lastIndexOf('.')+1)" />
+                        <send event="DISPLAY.UPDATE" />
+                    </onentry>
+                    <transition event="POINT" target="frac2" />
+                </state>
+                <state id="frac2">
+                    <onentry>
+                        <assign location="short_expr" expr="short_expr +'.'" />
+                        <send event="DISPLAY.UPDATE" />
+                    </onentry>
+                    <transition event="DIGIT">
+                        <assign location="short_expr" expr="short_expr +_event.name.substr(_event.name.lastIndexOf('.')+1)" />
+                        <send event="DISPLAY.UPDATE" />
+                    </transition>
+                </state>
+                <transition event="OPER" target="opEntered">
+                    <raise event="CALC.SUB" />
+                    <raise event="OP.INSERT" />
+                </transition>
+                <transition event="EQUALS" target="result">
+                    <raise event="CALC.SUB" />
+                    <raise event="CALC.DO" />
+                </transition>
+            </state>
+            <transition event="C" target="on" />
+        </state>
+        <transition event="CALC.DO">
+            <assign location="short_expr" expr="''+ res" />
+            <assign location="long_expr" expr="''" />
+            <assign location="res" expr="0" />
+        </transition>
+        <transition event="CALC.SUB">
+            <if cond="short_expr!=''">
+                <assign location="long_expr" expr="long_expr+'('+short_expr+')'" />
+            </if>
+            <assign location="res" expr="eval(long_expr)" />
+            <assign location="short_expr" expr="''" />
+            <send event="DISPLAY.UPDATE" />
+        </transition>
+        <transition event="DISPLAY.UPDATE">
+            <log label="'result'" expr="short_expr==''?res:short_expr" />
+            <send type="qt:signal" event="updateDisplay">
+                <param name="display" expr="short_expr==''?res:short_expr"/>
+            </send>
+        </transition>
+        <transition event="OP.INSERT">
+            <log expr="_event.data.operator" />
+            <if cond="_event.data.operator == 'OPER.PLUS'">
+                <assign location="long_expr" expr="long_expr+'+'" />
+            <elseif cond="_event.data.operator=='OPER.MINUS'" />
+                <assign location="long_expr" expr="long_expr+'-'" />
+            <elseif cond="_event.data.operator=='OPER.STAR'" />
+                <assign location="long_expr" expr="long_expr+'*'" />
+            <elseif cond="_event.data.operator=='OPER.DIV'" />
+                <assign location="long_expr" expr="long_expr+'/'" />
+            </if>
+        </transition>
+    </state>
+</scxml>
diff --git a/examples/calculator-common/mainwindow.cpp b/examples/calculator-common/mainwindow.cpp
new file mode 100644
index 0000000..0502d41
--- /dev/null
+++ b/examples/calculator-common/mainwindow.cpp
@@ -0,0 +1,121 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "mainwindow.h"
+#include "ui_mainwindow.h"
+
+#include <QStringListModel>
+#include <QScxmlStateMachine>
+
+#include <QDebug>
+
+QT_USE_NAMESPACE
+
+MainWindow::MainWindow(QScxmlStateMachine *machine, QWidget *parent) :
+    QWidget(parent),
+    ui(new Ui::MainWindow),
+    m_machine(machine)
+{
+    ui->setupUi(this);
+
+    connect(ui->digit0, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.0");
+    });
+    connect(ui->digit1, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.1");
+    });
+    connect(ui->digit2, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.2");
+    });
+    connect(ui->digit3, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.3");
+    });
+    connect(ui->digit4, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.4");
+    });
+    connect(ui->digit5, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.5");
+    });
+    connect(ui->digit6, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.6");
+    });
+    connect(ui->digit7, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.7");
+    });
+    connect(ui->digit8, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.8");
+    });
+    connect(ui->digit9, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("DIGIT.9");
+    });
+    connect(ui->point, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("POINT");
+    });
+    connect(ui->operPlus, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("OPER.PLUS");
+    });
+    connect(ui->operMinus, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("OPER.MINUS");
+    });
+    connect(ui->operStar, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("OPER.STAR");
+    });
+    connect(ui->operDiv, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("OPER.DIV");
+    });
+    connect(ui->equals, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("EQUALS");
+    });
+    connect(ui->c, &QAbstractButton::clicked, [this] {
+        m_machine->submitEvent("C");
+    });
+
+}
+
+MainWindow::~MainWindow()
+{
+    delete ui;
+}
+
+void MainWindow::updateDisplay(const QVariant &data)
+{
+    QString display = data.toMap().value("display").toString();
+    ui->display->setText(display);
+}
diff --git a/examples/calculator-common/mainwindow.h b/examples/calculator-common/mainwindow.h
new file mode 100644
index 0000000..c5c1a33
--- /dev/null
+++ b/examples/calculator-common/mainwindow.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+namespace Ui {
+class MainWindow;
+}
+QT_END_NAMESPACE
+
+class QScxmlStateMachine;
+
+class MainWindow : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit MainWindow(QScxmlStateMachine *machine, QWidget *parent = 0);
+    ~MainWindow();
+
+public slots:
+    void updateDisplay(const QVariant &data);
+
+private:
+    QT_PREPEND_NAMESPACE(Ui::MainWindow) *ui;
+    QScxmlStateMachine *m_machine;
+};
+
+#endif // MAINWINDOW_H
diff --git a/examples/calculator-common/mainwindow.ui b/examples/calculator-common/mainwindow.ui
new file mode 100644
index 0000000..8001ff1
--- /dev/null
+++ b/examples/calculator-common/mainwindow.ui
@@ -0,0 +1,180 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QWidget" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>364</width>
+    <height>182</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout_2">
+   <item row="0" column="0" colspan="2">
+    <widget class="QLabel" name="display">
+     <property name="frameShape">
+      <enum>QFrame::StyledPanel</enum>
+     </property>
+     <property name="alignment">
+      <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <spacer name="horizontalSpacer">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>20</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="1" column="1">
+    <layout class="QGridLayout" name="gridLayout">
+     <item row="0" column="0">
+      <widget class="QPushButton" name="digit7">
+       <property name="text">
+        <string>7</string>
+       </property>
+      </widget>
+     </item>
+     <item row="3" column="1">
+      <widget class="QPushButton" name="point">
+       <property name="text">
+        <string>.</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QPushButton" name="digit5">
+       <property name="text">
+        <string>5</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="2">
+      <widget class="QPushButton" name="digit9">
+       <property name="text">
+        <string>9</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <widget class="QPushButton" name="digit8">
+       <property name="text">
+        <string>8</string>
+       </property>
+      </widget>
+     </item>
+     <item row="4" column="2">
+      <widget class="QPushButton" name="c">
+       <property name="text">
+        <string>C</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="0">
+      <widget class="QPushButton" name="digit4">
+       <property name="text">
+        <string>4</string>
+       </property>
+      </widget>
+     </item>
+     <item row="2" column="3">
+      <widget class="QPushButton" name="operStar">
+       <property name="text">
+        <string>*</string>
+       </property>
+      </widget>
+     </item>
+     <item row="2" column="2">
+      <widget class="QPushButton" name="digit3">
+       <property name="text">
+        <string>3</string>
+       </property>
+      </widget>
+     </item>
+     <item row="4" column="3">
+      <widget class="QPushButton" name="equals">
+       <property name="text">
+        <string>=</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="3">
+      <widget class="QPushButton" name="operMinus">
+       <property name="text">
+        <string>-</string>
+       </property>
+      </widget>
+     </item>
+     <item row="2" column="0">
+      <widget class="QPushButton" name="digit1">
+       <property name="text">
+        <string>1</string>
+       </property>
+      </widget>
+     </item>
+     <item row="3" column="0">
+      <widget class="QPushButton" name="digit0">
+       <property name="text">
+        <string>0</string>
+       </property>
+      </widget>
+     </item>
+     <item row="3" column="3">
+      <widget class="QPushButton" name="operDiv">
+       <property name="text">
+        <string>/</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="3">
+      <widget class="QPushButton" name="operPlus">
+       <property name="text">
+        <string>+</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="2">
+      <widget class="QPushButton" name="digit6">
+       <property name="text">
+        <string>6</string>
+       </property>
+      </widget>
+     </item>
+     <item row="2" column="1">
+      <widget class="QPushButton" name="digit2">
+       <property name="text">
+        <string>2</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item row="2" column="1">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>10</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/examples/calculator-widgets-static/calculator-widgets-static.cpp b/examples/calculator-widgets-static/calculator-widgets-static.cpp
new file mode 100644
index 0000000..ee4567b
--- /dev/null
+++ b/examples/calculator-widgets-static/calculator-widgets-static.cpp
@@ -0,0 +1,60 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "calculator.h"
+#include "../calculator-common/mainwindow.h"
+
+#include <QApplication>
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Calculator machine;
+    machine.init();
+    MainWindow mainWindow(&machine);
+
+    QObject::connect(&machine, &Calculator::event_updateDisplay,
+                     &mainWindow, &MainWindow::updateDisplay);
+
+    machine.start();
+    mainWindow.show();
+    return app.exec();
+}
diff --git a/examples/calculator-widgets-static/calculator-widgets-static.pro b/examples/calculator-widgets-static/calculator-widgets-static.pro
new file mode 100644
index 0000000..5bf4c27
--- /dev/null
+++ b/examples/calculator-widgets-static/calculator-widgets-static.pro
@@ -0,0 +1,21 @@
+QT += widgets scxml
+
+CONFIG += c++11
+
+STATECHARTS = ../calculator-common/calculator.scxml
+
+SOURCES += \
+    calculator-widgets-static.cpp \
+    ../calculator-common/mainwindow.cpp
+
+FORMS += \
+    ../calculator-common/mainwindow.ui
+
+HEADERS += \
+    ../calculator-common/mainwindow.h
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/scxml/calculator-widgets
+INSTALLS += target
+
+load(qscxmlc)
diff --git a/examples/examples.pro b/examples/examples.pro
index b7d4253..7ea8f7d 100644
--- a/examples/examples.pro
+++ b/examples/examples.pro
@@ -7,6 +7,7 @@ qtHaveModule(widgets) {
     SUBDIRS +=  mediaplayer-widgets-dynamic
     SUBDIRS +=  pinball-widgets-static
     SUBDIRS +=  pinball-ecmascript-widgets-static
+    SUBDIRS +=  calculator-widgets-static
 }
 
 qtHaveModule(qml) {