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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:FDL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Free Documentation License Usage
** Alternatively, this file may be used under the terms of the GNU Free
** Documentation License version 1.3 as published by the Free Software
** Foundation and appearing in the file included in the packaging of
** this file. Please review the following information to ensure
** the GNU Free Documentation License version 1.3 requirements
** will be met: http://www.gnu.org/copyleft/fdl.html.
** $QT_END_LICENSE$
**
****************************************************************************/

import QtQuick 2.5
import QtQuick.Window 2.2
import QtQuick.Layouts 1.1
import QtQuick.LocalStorage 2.0
import "Database.js" as JS

Window {
    visible: true
    width: Screen.width / 2
    height: Screen.height / 1.8
    color: "#161616"

    property bool creatingNewEntry: false
    property bool editingEntry: false

    Rectangle {
        anchors.fill: parent

        ColumnLayout {
            anchors.fill: parent

            Header {
                id: input
                Layout.fillWidth: true
            }
            RowLayout {
                MyButton {
                    text: "New"
                    onClicked: {
                        input.initrec_new()
                        creatingNewEntry = true
                        listView.model.setProperty(listView.currentIndex, "id", 0)
                    }
                }
                MyButton {
                    id: saveButton
                    enabled: (creatingNewEntry || editingEntry) && listView.currentIndex != -1
                    text: "Save"
                    onClicked: {
                        var insertedRow = false;
                        if (listView.model.get(listView.currentIndex).id < 1) {
                            //insert mode
                            if (input.insertrec()) {
                                // Successfully inserted a row.
                                input.setlistview()
                                insertedRow = true
                            } else {
                                // Failed to insert a row; display an error message.
                                statustext.text = "Failed to insert row"
                            }
                        } else {
                            // edit mode
                            input.setlistview()
                            JS.dbUpdate(listView.model.get(listView.currentIndex).date,
                                        listView.model.get(listView.currentIndex).trip_desc,
                                        listView.model.get(listView.currentIndex).distance,
                                        listView.model.get(listView.currentIndex).id)
                        }

                        if (insertedRow) {
                            input.initrec()
                            creatingNewEntry = false
                            editingEntry = false
                            listView.forceLayout()
                        }
                    }
                }
                MyButton {
                    id: editButton
                    text: "Edit"
                    enabled: !creatingNewEntry && !editingEntry && listView.currentIndex != -1
                    onClicked: {
                        input.editrec(listView.model.get(listView.currentIndex).date,
                                      listView.model.get(listView.currentIndex).trip_desc,
                                      listView.model.get(listView.currentIndex).distance,
                                      listView.model.get(listView.currentIndex).id)

                        editingEntry = true
                    }
                }
                MyButton {
                    id: deleteButton
                    text: "Delete"
                    enabled: !creatingNewEntry && listView.currentIndex != -1
                    onClicked: {
                        JS.dbDeleteRow(listView.model.get(listView.currentIndex).id)
                        listView.model.remove(listView.currentIndex, 1)
                        if (listView.count == 0) {
                            // ListView doesn't automatically set its currentIndex to -1
                            // when the count becomes 0.
                            listView.currentIndex = -1
                        }
                    }
                }
                MyButton {
                    id: cancelButton
                    text: "Cancel"
                    enabled: (creatingNewEntry || editingEntry) && listView.currentIndex != -1
                    onClicked: {
                        if (listView.model.get(listView.currentIndex).id === 0) {
                            // This entry had an id of 0, which means it was being created and hadn't
                            // been saved to the database yet, so we can safely remove it from the model.
                            listView.model.remove(listView.currentIndex, 1)
                        }
                        listView.forceLayout()
                        creatingNewEntry = false
                        editingEntry = false
                        input.initrec()
                    }
                }
                MyButton {
                    text: "Exit"
                    onClicked: Qt.quit()
                }
            }
            Component {
                id: highlightBar
                Rectangle {
                    width: listView.currentItem.width
                    height: listView.currentItem.height
                    color: "lightgreen"
                }
            }
            ListView {
                id: listView
                Layout.fillWidth: true
                Layout.fillHeight: true
                model: MyModel {}
                delegate: MyDelegate {}
                // Don't allow changing the currentIndex while the user is creating/editing values.
                enabled: !creatingNewEntry && !editingEntry

                highlight: highlightBar
                highlightFollowsCurrentItem: true
                focus: true

                header: Component {
                    Text {
                        text: "Saved activities"
                    }
                }
            }
            Text {
                id: statustext
                color: "red"
                Layout.fillWidth: true
                font.bold: true
                font.pointSize: 20

            }
        }
    }
    Component.onCompleted: {
        JS.dbInit()
    }
}