+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Components project.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 1.1
+import com.nokia.meego 1.0
+import "Tumbler.js" as Engine
+import "constants.js" as C
+
+/*
+ Class: Tumbler
+ A tumbler.
+*/
+ImplicitSizeItem {
+ id: root
+
+ /*
+ * Property: items
+ * [ListModel] Array of ListModel for each column of the dialog.
+ */
+ property list<Item> columns
+
+ /*
+ * Event: changed
+ * Is emitted when the value of the tumbler changes.
+ */
+ signal changed(int index)
+
+ /* private */
+ property bool privateDelayInit: false
+ property list<Item> privateTemplates
+
+ implicitWidth: C.TUMBLER_WIDTH
+ implicitHeight: screen.displayWidth > screen.displayHeight ?
+ C.TUMBLER_HEIGHT_LANDSCAPE :
+ C.TUMBLER_HEIGHT_PORTRAIT
+
+ /* private */
+ function privateInitialize() {
+ if (!internal.initialized) {
+ Engine.initialize();
+ internal.initialized = true;
+ }
+ }
+
+ /* private */
+ function privateForceUpdate() {
+ Engine.forceUpdate();
+ }
+
+ anchors.fill: parent
+ clip: true
+ Component.onCompleted: {
+ if (!privateDelayInit && !internal.initialized) {
+ Engine.initialize();
+ internal.initialized = true;
+ }
+ }
+ onChanged: {
+ if (internal.movementCount == 0)
+ Engine.forceUpdate();
+ }
+ onColumnsChanged: {
+ if (internal.initialized) {
+ // when new columns are added, the system first removes all
+ // the old columns
+ internal.initialized = false;
+ Engine.clear();
+ internal.reInit = true;
+ } else if (internal.reInit && columns.length > 0) {
+ // timer is used because the new columns are added one by one
+ // we only want to act after the last column is added
+ internal.reInit = false;
+ columnChangedTimer.restart();
+ }
+ }
+ onWidthChanged: {
+ Engine.layout();
+ }
+
+ QtObject {
+ id: internal
+
+ property int movementCount: 0
+ property bool initialized: false
+ property bool reInit: false
+ property bool hasLabel: false
+
+ property Timer timer: Timer {
+ id: columnChangedTimer
+ interval: 50
+ onTriggered: {
+ Engine.initialize();
+ internal.initialized = true;
+ }
+ }
+ }
+
+ BorderImage {
+ width: parent.width
+ height: internal.hasLabel ?
+ parent.height - C.TUMBLER_LABEL_HEIGHT : // decrease by bottom text height
+ parent.height
+ source: "image://theme/" + theme.colorString + "meegotouch-list-fullwidth-background-selected"
+ anchors.top: parent.top
+ border { left: C.TUMBLER_BORDER_MARGIN; top: C.TUMBLER_BORDER_MARGIN; right: C.TUMBLER_BORDER_MARGIN; bottom: C.TUMBLER_BORDER_MARGIN }
+ }
+
+ Rectangle {
+ width: parent.width
+ height: internal.hasLabel ?
+ parent.height - C.TUMBLER_LABEL_HEIGHT - 2 * C.TUMBLER_BORDER_MARGIN : // decrease by bottom text & border height
+ parent.height - 2*C.TUMBLER_BORDER_MARGIN
+ color: C.TUMBLER_COLOR
+ anchors { top: parent.top; topMargin: C.TUMBLER_BORDER_MARGIN }
+ }
+
+ Row {
+ id: tumblerRow
+ anchors { fill: parent; topMargin: 1 }
+ }
+}