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#include <QtGui>

#include "mainwindow.h"

#include "findfiledialog.h"

//! [0]

MainWindow::MainWindow()

{

    textViewer = new QTextEdit;

    textViewer->setReadOnly(true);

    QFile file("documentation/intro.html");

    if (file.open(QIODevice::ReadOnly))

        textViewer->setHtml(file.readAll());

    setCentralWidget(textViewer);

    createActions();

    createMenus();

    initializeAssistant();

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

    resize(750, 400);

}

//! [0]

//! [1]

void MainWindow::closeEvent(QCloseEvent *)

{

    if (assistantClient)

        assistantClient->closeAssistant();

}

//! [1]

void MainWindow::about()

{

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

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

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

                            "own application."));

}

//! [2]

void MainWindow::assistant()

{

    assistantClient->showPage(QLibraryInfo::location(QLibraryInfo::ExamplesPath) +

                                              QDir::separator() +

                                              "assistant/simpletextviewer/documentation/index.html");

}

//! [2]

//! [3]

void MainWindow::open()

{

    FindFileDialog dialog(textViewer, assistantClient);

    dialog.exec();

}

//! [3]

void MainWindow::createActions()

{

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

    assistantAct->setShortcuts(QKeySequence::HelpContents);

    connect(assistantAct, SIGNAL(triggered()), this, SLOT(assistant()));

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

    openAct->setShortcuts(QKeySequence::Open);

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

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

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

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

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

    exitAct->setShortcuts(QKeySequence::Quit);

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

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

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

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

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

}

void MainWindow::createMenus()

{

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

    fileMenu->addAction(openAct);

    fileMenu->addAction(clearAct);

    fileMenu->addSeparator();

    fileMenu->addAction(exitAct);

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

    helpMenu->addAction(assistantAct);

    helpMenu->addSeparator();

    helpMenu->addAction(aboutAct);

    helpMenu->addAction(aboutQtAct);

    menuBar()->addMenu(fileMenu);

    menuBar()->addMenu(helpMenu);

}

//! [4]

void MainWindow::initializeAssistant()

{

    assistantClient = new QAssistantClient(QLibraryInfo::location(QLibraryInfo::BinariesPath), this);

    QStringList arguments;

    arguments << "-profile" << QString("documentation") + QDir::separator() + QString("simpletextviewer.adp");

    assistantClient->setArguments(arguments);

}

//! [4]