#include <QtGui>#include "editor.h"#include "mainwindow.h"MainWindow::MainWindow(){    workspace = new QWorkspace;    setCentralWidget(workspace);    connect(workspace, SIGNAL(windowActivated(QWidget *)),            this, SLOT(updateMenus()));    createActions();    createMenus();    createToolBars();    createStatusBar();    setWindowTitle(tr("MDI Editor"));    setWindowIcon(QPixmap(":/images/icon.png"));}void MainWindow::newFile(){    Editor *editor = createEditor();    editor->newFile();    editor->show();}void MainWindow::openFile(const QString &fileName){    Editor *editor = createEditor();    if (editor->openFile(fileName)) {        editor->show();    } else {        editor->close();    }}void MainWindow::closeEvent(QCloseEvent *event){    workspace->closeAllWindows();    if (activeEditor()) {        event->ignore();    } else {        event->accept();    }}void MainWindow::open(){    Editor *editor = createEditor();    if (editor->open()) {        editor->show();    } else {        editor->close();    }}void MainWindow::save(){    if (activeEditor())        activeEditor()->save();}void MainWindow::saveAs(){    if (activeEditor())        activeEditor()->saveAs();}void MainWindow::cut(){    if (activeEditor())        activeEditor()->cut();}void MainWindow::copy(){    if (activeEditor())        activeEditor()->copy();}void MainWindow::paste(){    if (activeEditor())        activeEditor()->paste();}void MainWindow::about(){    QMessageBox::about(this, tr("About MDI Editor"),            tr("<h2>Editor 1.1</h2>"               "<p>Copyright &copy; 2006 Software Inc."               "<p>MDI Editor is a small application that demonstrates "               "QWorkspace."));}void MainWindow::updateMenus(){    bool hasEditor = (activeEditor() != 0);    bool hasSelection = activeEditor()                        && activeEditor()->textCursor().hasSelection();    saveAction->setEnabled(hasEditor);    saveAsAction->setEnabled(hasEditor);    pasteAction->setEnabled(hasEditor);    cutAction->setEnabled(hasSelection);    copyAction->setEnabled(hasSelection);    closeAction->setEnabled(hasEditor);    closeAllAction->setEnabled(hasEditor);    tileAction->setEnabled(hasEditor);    cascadeAction->setEnabled(hasEditor);    nextAction->setEnabled(hasEditor);    previousAction->setEnabled(hasEditor);    separatorAction->setVisible(hasEditor);    if (activeEditor())        activeEditor()->windowMenuAction()->setChecked(true);}void MainWindow::createActions(){    newAction = new QAction(QIcon(":/images/new.png"), tr("&New"),                            this);    newAction->setShortcut(tr("Ctrl+N"));    newAction->setStatusTip(tr("Create a new file"));    connect(newAction, SIGNAL(triggered()), this, SLOT(newFile()));    openAction = new QAction(QIcon(":/images/open.png"), tr("&Open..."),                             this);    openAction->setShortcut(tr("Ctrl+O"));    openAction->setStatusTip(tr("Open an existing file"));    connect(openAction, SIGNAL(triggered()), this, SLOT(open()));    saveAction = new QAction(QIcon(":/images/save.png"), tr("&Save"),                             this);    saveAction->setShortcut(tr("Ctrl+S"));    saveAction->setStatusTip(tr("Save the file to disk"));    connect(saveAction, SIGNAL(triggered()), this, SLOT(save()));    saveAsAction = new QAction(tr("Save &As..."), this);    saveAsAction->setStatusTip(tr("Save the file under a new name"));    connect(saveAsAction, SIGNAL(triggered()), this, SLOT(saveAs()));    exitAction = new QAction(tr("E&xit"), this);    exitAction->setShortcut(tr("Ctrl+Q"));    exitAction->setStatusTip(tr("Exit the application"));    connect(exitAction, SIGNAL(triggered()), this, SLOT(close()));    cutAction = new QAction(QIcon(":/images/cut.png"), tr("Cu&t"),                            this);    cutAction->setShortcut(tr("Ctrl+X"));    cutAction->setStatusTip(tr("Cut the current selection to the "                               "clipboard"));    connect(cutAction, SIGNAL(triggered()), this, SLOT(cut()));    copyAction = new QAction(QIcon(":/images/copy.png"), tr("&Copy"),                             this);    copyAction->setShortcut(tr("Ctrl+C"));    copyAction->setStatusTip(tr("Copy the current selection to the "                                "clipboard"));    connect(copyAction, SIGNAL(triggered()), this, SLOT(copy()));    pasteAction = new QAction(QIcon(":/images/paste.png"), tr("&Paste"),                              this);    pasteAction->setShortcut(tr("Ctrl+V"));    pasteAction->setStatusTip(tr("Paste the clipboard's contents at "                                 "the cursor position"));    connect(pasteAction, SIGNAL(triggered()), this, SLOT(paste()));    closeAction = new QAction(tr("Cl&ose"), this);    closeAction->setShortcut(tr("Ctrl+F4"));    closeAction->setStatusTip(tr("Close the active window"));    connect(closeAction, SIGNAL(triggered()),            workspace, SLOT(closeActiveWindow()));    closeAllAction = new QAction(tr("Close &All"), this);    closeAllAction->setStatusTip(tr("Close all the windows"));    connect(closeAllAction, SIGNAL(triggered()),            workspace, SLOT(closeAllWindows()));    tileAction = new QAction(tr("&Tile"), this);    tileAction->setStatusTip(tr("Tile the windows"));    connect(tileAction, SIGNAL(triggered()), workspace, SLOT(tile()));    cascadeAction = new QAction(tr("&Cascade"), this);    cascadeAction->setStatusTip(tr("Cascade the windows"));    connect(cascadeAction, SIGNAL(triggered()),            workspace, SLOT(cascade()));    nextAction = new QAction(tr("Ne&xt"), this);    nextAction->setShortcut(tr("Ctrl+F6"));    nextAction->setStatusTip(tr("Move the focus to the next window"));    connect(nextAction, SIGNAL(triggered()),            workspace, SLOT(activateNextWindow()));    previousAction = new QAction(tr("Pre&vious"), this);    previousAction->setShortcut(tr("Ctrl+Shift+F6"));    previousAction->setStatusTip(tr("Move the focus to the previous "                                    "window"));    connect(previousAction, SIGNAL(triggered()),            workspace, SLOT(activatePreviousWindow()));    separatorAction = new QAction(this);    separatorAction->setSeparator(true);    aboutAction = new QAction(tr("&About"), this);    aboutAction->setStatusTip(tr("Show the application's About box"));    connect(aboutAction, SIGNAL(triggered()), this, SLOT(about()));    aboutQtAction = new QAction(tr("About &Qt"), this);    aboutQtAction->setStatusTip(tr("Show the Qt library's About box"));    connect(aboutQtAction, SIGNAL(triggered()), qApp, SLOT(aboutQt()));    windowActionGroup = new QActionGroup(this);}void MainWindow::createMenus(){    fileMenu = menuBar()->addMenu(tr("&File"));    fileMenu->addAction(newAction);    fileMenu->addAction(openAction);    fileMenu->addAction(saveAction);    fileMenu->addAction(saveAsAction);    fileMenu->addSeparator();    fileMenu->addAction(exitAction);    editMenu = menuBar()->addMenu(tr("&Edit"));    editMenu->addAction(cutAction);    editMenu->addAction(copyAction);    editMenu->addAction(pasteAction);    windowMenu = menuBar()->addMenu(tr("&Window"));    windowMenu->addAction(closeAction);    windowMenu->addAction(closeAllAction);    windowMenu->addSeparator();    windowMenu->addAction(tileAction);    windowMenu->addAction(cascadeAction);    windowMenu->addSeparator();    windowMenu->addAction(nextAction);    windowMenu->addAction(previousAction);    windowMenu->addAction(separatorAction);    menuBar()->addSeparator();    helpMenu = menuBar()->addMenu(tr("&Help"));    helpMenu->addAction(aboutAction);    helpMenu->addAction(aboutQtAction);}void MainWindow::createToolBars(){    fileToolBar = addToolBar(tr("File"));    fileToolBar->addAction(newAction);    fileToolBar->addAction(openAction);    fileToolBar->addAction(saveAction);    editToolBar = addToolBar(tr("Edit"));    editToolBar->addAction(cutAction);    editToolBar->addAction(copyAction);    editToolBar->addAction(pasteAction);}void MainWindow::createStatusBar(){    readyLabel = new QLabel(tr(" Ready"));    statusBar()->addWidget(readyLabel, 1);}Editor *MainWindow::createEditor(){    Editor *editor = new Editor;    connect(editor, SIGNAL(copyAvailable(bool)),            cutAction, SLOT(setEnabled(bool)));    connect(editor, SIGNAL(copyAvailable(bool)),            copyAction, SLOT(setEnabled(bool)));    workspace->addWindow(editor);    windowMenu->addAction(editor->windowMenuAction());    windowActionGroup->addAction(editor->windowMenuAction());    return editor;}Editor *MainWindow::activeEditor(){    return qobject_cast<Editor *>(workspace->activeWindow());}