<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>localstorage.qml Example File | Qt Quick 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-localstorage-example.html">Qt Quick Examples - Local Storage</a></td><td >localstorage.qml Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtquick-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">localstorage.qml Example File</h1> <span class="subtitle">localstorage/localstorage/localstorage.qml</span> <!-- $$$localstorage/localstorage/localstorage.qml-description --> <div class="descr"> <a name="details"></a> <pre class="qml"> /**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the documentation of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, 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 The Qt Company Ltd 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 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() } } </pre> </div> <!-- @@@localstorage/localstorage/localstorage.qml --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. 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