added android components
[mardrone] / mardrone / imports / com / nokia / android.1.1 / ListItem.qml
diff --git a/mardrone/imports/com/nokia/android.1.1/ListItem.qml b/mardrone/imports/com/nokia/android.1.1/ListItem.qml
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+/****************************************************************************
+**
+** 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 "." 1.1
+
+Item {
+    id: root
+    property string mode: "normal" // Read-only
+    property alias paddingItem: paddingItem // Read-only
+
+    property bool enabled: true
+    property bool subItemIndicator: false
+    property bool platformInverted: false
+
+    signal clicked
+    signal pressAndHold
+
+    implicitWidth: ListView.view ? ListView.view.width : screen.width
+    implicitHeight: platformStyle.graphicSizeLarge
+
+    Item {
+        id: background
+        anchors.fill: parent
+
+        Rectangle {
+            height: 1
+            color: root.platformInverted ? platformStyle.colorDisabledLightInverted
+                                         : platformStyle.colorDisabledMid
+            anchors {
+                bottom: parent.bottom
+                left: parent.left
+                right: parent.right
+            }
+        }
+        Loader {
+            id: faderLoader
+            opacity: 0
+            anchors.fill: background
+            sourceComponent: root.mode != "normal" && root.mode != "pressed" ? fader : undefined
+        }
+
+        BorderImage {
+            id: highlight
+            border {
+                left: platformStyle.borderSizeMedium
+                top: platformStyle.borderSizeMedium
+                right: platformStyle.borderSizeMedium
+                bottom: platformStyle.borderSizeMedium
+            }
+            opacity: 0
+            anchors.fill: background
+        }
+    }
+
+    Component {
+        id: fader
+
+        BorderImage {
+            source: privateStyle.imagePath("qtg_fr_list_" + mode, root.platformInverted)
+            border {
+                left: platformStyle.borderSizeMedium
+                top: platformStyle.borderSizeMedium
+                right: platformStyle.borderSizeMedium
+                bottom: platformStyle.borderSizeMedium
+            }
+        }
+    }
+
+    MouseArea {
+        id: mouseArea
+        anchors.fill: parent
+        enabled: root.enabled
+        onPressed: {
+            android.listInteractionMode = Android.TouchInteraction
+            internal.state = "Pressed"
+        }
+        onClicked: {
+            internal.state = ""
+            root.clicked()
+        }
+        onCanceled: {
+            internal.state = "Canceled"
+        }
+        onPressAndHold: {
+            internal.state = "PressAndHold"
+        }
+        onReleased: {
+            internal.state = ""
+        }
+        onExited: {
+            internal.state = ""
+        }
+    }
+
+    Loader {
+        id: iconLoader
+        sourceComponent: root.subItemIndicator ? subItemIcon : undefined
+        anchors {
+            right: parent.right
+            rightMargin: privateStyle.scrollBarThickness
+            verticalCenter: parent.verticalCenter
+        }
+    }
+
+    Component {
+        id: subItemIcon
+
+        Image {
+            source: privateStyle.imagePath(
+                root.enabled ? "qtg_graf_drill_down_indicator"
+                             : "qtg_graf_drill_down_indicator_disabled",
+                root.platformInverted)
+            mirror: LayoutMirroring.enabled
+            sourceSize.width: platformStyle.graphicSizeSmall
+            sourceSize.height: platformStyle.graphicSizeSmall
+        }
+    }
+
+    Keys.onReleased: {
+        if (!event.isAutoRepeat && root.enabled) {
+            if (event.key == Qt.Key_Select || event.key == Qt.Key_Return || event.key == Qt.Key_Enter) {
+                event.accepted = true
+                internal.state = "Focused"
+            }
+        }
+    }
+
+    Keys.onPressed: {
+        if (!event.isAutoRepeat) {
+            switch (event.key) {
+                case Qt.Key_Select:
+                case Qt.Key_Enter:
+                case Qt.Key_Return: {
+                    if (android.listInteractionMode != Android.KeyNavigation)
+                        android.listInteractionMode = Android.KeyNavigation
+                    else
+                        if (root.enabled) {
+                            highlight.source = privateStyle.imagePath("qtg_fr_list_pressed",
+                                                                      root.platformInverted)
+                            highlight.opacity = 1
+                            releasedEffect.restart()
+                            root.clicked()
+                        }
+                    event.accepted = true
+                    break
+                }
+
+                case Qt.Key_Up: {
+                    if (android.listInteractionMode != Android.KeyNavigation) {
+                        android.listInteractionMode = Android.KeyNavigation
+                        internal.state = "Focused"
+                        ListView.view.positionViewAtIndex(index, ListView.Beginning)
+                    } else
+                        ListView.view.decrementCurrentIndex()
+                    event.accepted = true
+                    break
+                }
+
+                case Qt.Key_Down: {
+                    if (android.listInteractionMode != Android.KeyNavigation) {
+                        android.listInteractionMode = Android.KeyNavigation
+                        ListView.view.positionViewAtIndex(index, ListView.Beginning)
+                        internal.state = "Focused"
+                    } else
+                        ListView.view.incrementCurrentIndex()
+                    event.accepted = true
+                    break
+                }
+                default: {
+                    event.accepted = false
+                    break
+                }
+            }
+        }
+
+        if (event.key == Qt.Key_Up || event.key == Qt.Key_Down)
+            android.privateListItemKeyNavigation(ListView.view)
+    }
+
+    ListView.onRemove: SequentialAnimation {
+        PropertyAction { target: root; property: "ListView.delayRemove"; value: true }
+        ParallelAnimation {
+            SequentialAnimation {
+                PauseAnimation { duration: 50 }
+                NumberAnimation {
+                    target: root
+                    property: "height"
+                    to: 0
+                    duration: 200
+                    easing.type: Easing.OutQuad
+                }
+            }
+            NumberAnimation {
+                target: root
+                property: "opacity"
+                from: 1
+                to: 0
+                duration: 200
+                easing.type: Easing.Linear
+            }
+        }
+        PropertyAction { target: root; property: "ListView.delayRemove"; value: false }
+    }
+
+    ListView.onAdd: SequentialAnimation {
+        PropertyAction { target: root; property: "height"; value: 0 }
+        ParallelAnimation {
+            NumberAnimation {
+                target: root
+                property: "height"
+                to: root.height
+                duration: 250
+                easing.type: Easing.OutQuad
+            }
+            NumberAnimation {
+                target: root
+                property: "opacity"
+                from: 0
+                to: 1
+                duration: 250
+                easing.type: Easing.Linear
+            }
+        }
+    }
+
+    SequentialAnimation {
+        id: releasedEffect
+        PropertyAnimation {
+            target: highlight
+            property: "opacity"
+            to: 0
+            easing.type: Easing.Linear
+            duration: 150
+        }
+    }
+
+    Item {
+        // non-visible item to create a padding boundary that content items can bind to
+        id: paddingItem
+        anchors {
+            fill: parent
+            leftMargin: platformStyle.paddingLarge
+            rightMargin: iconLoader.status == Loader.Ready ?
+                    privateStyle.scrollBarThickness + iconLoader.width + platformStyle.paddingMedium :
+                    privateStyle.scrollBarThickness
+            topMargin: platformStyle.paddingLarge
+            bottomMargin: platformStyle.paddingLarge
+        }
+    }
+
+    StateGroup {
+        id: internal
+
+        function getMode() {
+            if (internal.state == "Pressed" || internal.state == "PressAndHold")
+                return "pressed"
+            else if (internal.state == "Focused")
+                return "highlighted"
+            else if (internal.state == "Disabled")
+                return "disabled"
+            else
+                return "normal"
+        }
+
+        // Performance optimization:
+        // Use value assignment when property changes instead of binding to js function
+        onStateChanged: { root.mode = internal.getMode() }
+
+        function press() {
+            privateStyle.play(Android.BasicItem)
+            highlight.source = privateStyle.imagePath("qtg_fr_list_pressed", root.platformInverted)
+            highlight.opacity = 1
+            if (root.ListView.view)
+                root.ListView.view.currentIndex = index
+        }
+
+        function release() {
+            if (android.listInteractionMode != Android.KeyNavigation)
+                privateStyle.play(Android.BasicItem)
+            releasedEffect.restart()
+        }
+
+        function releaseHold() {
+            releasedEffect.restart()
+        }
+
+        function hold() {
+            root.pressAndHold()
+        }
+
+        function disable() {
+            faderLoader.opacity = 1
+        }
+
+        function focus() {
+            faderLoader.opacity = 1
+        }
+
+        function canceled() {
+            releasedEffect.restart()
+        }
+
+        states: [
+            State { name: "Pressed" },
+            State { name: "PressAndHold" },
+            State { name: "Disabled"; when: !root.enabled },
+            State { name: "Focused"; when: (root.ListView.isCurrentItem &&
+                android.listInteractionMode == Android.KeyNavigation) },
+            State { name: "Canceled" },
+            State { name: "" }
+        ]
+
+        transitions: [
+            Transition {
+                to: "Pressed"
+                ScriptAction { script: internal.press() }
+            },
+            Transition {
+                from: "Pressed"
+                to: "PressAndHold"
+                ScriptAction { script: internal.hold() }
+            },
+            Transition {
+                from: "PressAndHold"
+                to: ""
+                ScriptAction { script: internal.releaseHold() }
+            },
+            Transition {
+                to: ""
+                ScriptAction { script: internal.release() }
+            },
+            Transition {
+                to: "Disabled"
+                ScriptAction { script: internal.disable() }
+            },
+            Transition {
+                to: "Focused"
+                ScriptAction { script: internal.focus() }
+            },
+            Transition {
+                to: "Canceled"
+                ScriptAction { script: internal.canceled() }
+            }
+        ]
+    }
+}