96 lines
2.2 KiB
C++
Executable File
96 lines
2.2 KiB
C++
Executable File
#include <QtGui>
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#include <QMainWindow>
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#include "mainwindow.h"
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#include "ui_mainwindow.h"
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MainWindow::MainWindow(QWidget *parent) :
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QMainWindow(parent),
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ui(new Ui::MainWindow)
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{
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ui->setupUi(this);
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}
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MainWindow::~MainWindow()
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{
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delete ui;
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}
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void MainWindow::newfile(){
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if (maybeSave()) {
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ui->textEdit->clear();
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setCurrentFile("");
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}
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}
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bool MainWindow::maybeSave(){
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if (ui->textEdit->document()->isModified()) {
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QMessageBox::StandardButton ret;
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ret = QMessageBox::warning(this, tr("Application"),
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tr("The document has been modified.\n"
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"Do you want to save your changes?"),
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QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel);
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if (ret == QMessageBox::Save)
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return save();
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else if (ret == QMessageBox::Cancel)
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return false;
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}
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return true;
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}
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void MainWindow::setCurrentFile(const QString &fileName){
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curFile = fileName;
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ui->textEdit->document()->setModified(false);
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setWindowModified(false);
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QString shownName = curFile;
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if (curFile.isEmpty())
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shownName = "untitled.txt";
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setWindowFilePath(shownName);
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}
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bool MainWindow::save(){
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if (curFile.isEmpty()) {
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return saveAs();
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} else {
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return saveFile(curFile);
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}
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}
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bool MainWindow::saveAs(){
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QString fileName = QFileDialog::getSaveFileName(this);
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if (fileName.isEmpty())
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return false;
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return saveFile(fileName);
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}
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bool MainWindow::saveFile(const QString &fileName){
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QFile file(fileName);
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if (!file.open(QFile::WriteOnly | QFile::Text)) {
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QMessageBox::warning(this, tr("Application"),
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tr("Cannot write file %1:\n%2.")
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.arg(fileName)
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.arg(file.errorString()));
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return false;
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}
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QTextStream out(&file);
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#ifndef QT_NO_CURSOR
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QApplication::setOverrideCursor(Qt::WaitCursor);
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#endif
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out << ui->textEdit->toPlainText();
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#ifndef QT_NO_CURSOR
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QApplication::restoreOverrideCursor();
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#endif
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setCurrentFile(fileName);
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statusBar()->showMessage(tr("File saved"), 2000);
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return true;
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}
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