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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the documentation 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 Nokia Corporation and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+//![document]
+import QtQuick 2.0
+
+//![parent begin]
+Rectangle {
+//![parent begin]
+
+    id: screen
+    width: 400; height: 500
+
+
+Rectangle {
+    id: flag
+}
+Column {
+    spacing: 15
+//![signal states]
+Rectangle {
+    id: signal
+    width: 200; height: 200
+    state: "NORMAL"
+
+    states: [
+        State {
+            name: "NORMAL"
+            PropertyChanges { target: signal; color: "green"}
+            PropertyChanges { target: flag; state: "FLAG_DOWN"}
+        },
+        State {
+            name: "CRITICAL"
+            PropertyChanges { target: signal; color: "red"}
+            PropertyChanges { target: flag; state: "FLAG_UP"}
+        }
+    ]
+}
+//![signal states]
+
+//![switch states]
+Rectangle {
+    id: signalswitch
+    width: 75; height: 75
+    color: "blue"
+
+    MouseArea {
+        anchors.fill: parent
+        onClicked: {
+            if (signal.state == "NORMAL")
+                signal.state = "CRITICAL"
+            else
+                signal.state = "NORMAL"
+        }
+    }
+}
+//![switch states]
+
+//![when property]
+Rectangle {
+    id: bell
+    width: 75; height: 75
+    color: "yellow"
+
+    states: State {
+                name: "RINGING"
+                when: (signal.state == "CRITICAL")
+                PropertyChanges {target: speaker; play: "RING!"}
+            }
+}
+//![when property]
+
+Text {
+    id: speaker
+    property alias play: speaker.text
+    text: "NORMAL"
+}
+
+} // end of row
+
+//![parent end]
+}
+//![parent end]
+
+//![document]