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    41 

    42 #include <QtCore/QLibraryInfo>

    43 #include <QtGui/QApplication>

    44 #include <QtGui/QAction>

    45 #include <QtGui/QMenu>

    46 #include <QtGui/QMenuBar>

    47 #include <QtGui/QMessageBox>

    48 

    49 #include "mainwindow.h"

    50 #include "findfiledialog.h"

    51 #include "assistant.h"

    52 #include "textedit.h"

    53 

    54 // ![0]

    55 MainWindow::MainWindow()

    56 {

    57     assistant = new Assistant;

    58 // ![0]

    59     textViewer = new TextEdit;

    60     textViewer->setContents(QLibraryInfo::location(QLibraryInfo::ExamplesPath)

    61             + QLatin1String("/help/simpletextviewer/documentation/intro.html"));

    62     setCentralWidget(textViewer);

    63 

    64     createActions();

    65     createMenus();

    66 

    67     setWindowTitle(tr("Simple Text Viewer"));

    68     resize(750, 400);

    69 // ![1]

    70 }

    71 //! [1]

    72 

    73 //! [2]

    74 void MainWindow::closeEvent(QCloseEvent *)

    75 {

    76     delete assistant;

    77 }

    78 //! [2]

    79 

    80 void MainWindow::about()

    81 {

    82     QMessageBox::about(this, tr("About Simple Text Viewer"),

    83                        tr("This example demonstrates how to use\n"

    84                           "Qt Assistant as help system for your\n"

    85                           "own application."));

    86 }

    87 

    88 //! [3]

    89 void MainWindow::showDocumentation()

    90 {

    91     assistant->showDocumentation("index.html");    

    92 }

    93 //! [3]

    94 

    95 void MainWindow::open()

    96 {

    97     FindFileDialog dialog(textViewer, assistant);

    98     dialog.exec();

    99 }

   100 

   101 //! [4]

   102 void MainWindow::createActions()

   103 {

   104     assistantAct = new QAction(tr("Help Contents"), this);

   105     assistantAct->setShortcut(QKeySequence::HelpContents);

   106     connect(assistantAct, SIGNAL(triggered()), this, SLOT(showDocumentation()));

   107 //! [4]

   108 

   109     openAct = new QAction(tr("&Open..."), this);

   110     openAct->setShortcut(QKeySequence::Open);

   111     connect(openAct, SIGNAL(triggered()), this, SLOT(open()));

   112 

   113     clearAct = new QAction(tr("&Clear"), this);

   114     clearAct->setShortcut(tr("Ctrl+C"));

   115     connect(clearAct, SIGNAL(triggered()), textViewer, SLOT(clear()));

   116 

   117     exitAct = new QAction(tr("E&xit"), this);

   118     exitAct->setShortcuts(QKeySequence::Quit);

   119     connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));

   120 

   121     aboutAct = new QAction(tr("&About"), this);

   122     connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));

   123 

   124     aboutQtAct = new QAction(tr("About &Qt"), this);

   125     connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));

   126 //! [5]

   127 }

   128 //! [5]

   129 

   130 void MainWindow::createMenus()

   131 {

   132     fileMenu = new QMenu(tr("&File"), this);

   133     fileMenu->addAction(openAct);

   134     fileMenu->addAction(clearAct);

   135     fileMenu->addSeparator();

   136     fileMenu->addAction(exitAct);

   137 

   138     helpMenu = new QMenu(tr("&Help"), this);

   139     helpMenu->addAction(assistantAct);

   140     helpMenu->addSeparator();

   141     helpMenu->addAction(aboutAct);

   142     helpMenu->addAction(aboutQtAct);

   143 

   144 

   145     menuBar()->addMenu(fileMenu);

   146     menuBar()->addMenu(helpMenu);

   147 }