localstorage.qml Example File | Qt Quick 5.12.8

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# localstorage.qml Example File

localstorage/localstorage/localstorage.qml

     /****************************************************************************
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     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()
         }
     }