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50
51#include "mainwindow.h"
52#include "textedit.h"
53
54#include <QAction>
55#include <QApplication>
56#include <QCompleter>
57#include <QFile>
58#include <QMenuBar>
59#include <QMessageBox>
60#include <QStringListModel>
61
62//! [0]
63MainWindow::MainWindow(QWidget *parent)
64 : QMainWindow(parent)
65{
66 createMenu();
67
68 completingTextEdit = new TextEdit;
69 completer = new QCompleter(this);
70 completer->setModel(modelFromFile(":/resources/wordlist.txt"));
71 completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel);
72 completer->setCaseSensitivity(Qt::CaseInsensitive);
73 completer->setWrapAround(false);
74 completingTextEdit->setCompleter(completer);
75
76 setCentralWidget(completingTextEdit);
77 resize(500, 300);
78 setWindowTitle(tr("Completer"));
79}
80//! [0]
81
82//! [1]
83void MainWindow::createMenu()
84{
85 QAction *exitAction = new QAction(tr("Exit"), this);
86 QAction *aboutAct = new QAction(tr("About"), this);
87 QAction *aboutQtAct = new QAction(tr("About Qt"), this);
88
89 connect(exitAction, &QAction::triggered, qApp, &QApplication::quit);
90 connect(aboutAct, &QAction::triggered, this, &MainWindow::about);
91 connect(aboutQtAct, &QAction::triggered, qApp, &QApplication::aboutQt);
92
93 QMenu *fileMenu = menuBar()->addMenu(tr("File"));
94 fileMenu->addAction(exitAction);
95
96 QMenu *helpMenu = menuBar()->addMenu(tr("About"));
97 helpMenu->addAction(aboutAct);
98 helpMenu->addAction(aboutQtAct);
99}
100//! [1]
101
102//! [2]
103QAbstractItemModel *MainWindow::modelFromFile(const QString& fileName)
104{
105 QFile file(fileName);
106 if (!file.open(QFile::ReadOnly))
107 return new QStringListModel(completer);
108
109#ifndef QT_NO_CURSOR
110 QGuiApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
111#endif
112 QStringList words;
113
114 while (!file.atEnd()) {
115 QByteArray line = file.readLine();
116 if (!line.isEmpty())
117 words << QString::fromUtf8(line.trimmed());
118 }
119
120#ifndef QT_NO_CURSOR
121 QGuiApplication::restoreOverrideCursor();
122#endif
123 return new QStringListModel(words, completer);
124}
125//! [2]
126
127//! [3]
128void MainWindow::about()
129{
130 QMessageBox::about(this, tr("About"), tr("This example demonstrates the "
131 "different features of the QCompleter class."));
132}
133//! [3]
134
135