/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** $QT_END_LICENSE$
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****************************************************************************/

#include <QtCore/QLibraryInfo>
#include <QtWidgets/QApplication>
#include <QtWidgets/QAction>
#include <QtWidgets/QMenu>
#include <QtWidgets/QMenuBar>
#include <QtWidgets/QMessageBox>

#include "mainwindow.h"
#include "findfiledialog.h"
#include "assistant.h"
#include "textedit.h"

// ![0]
MainWindow::MainWindow()
{
    assistant = new Assistant;
// ![0]
    textViewer = new TextEdit;
    textViewer->setContents(QLibraryInfo::location(QLibraryInfo::ExamplesPath)
            + QLatin1String("/help/simpletextviewer/documentation/intro.html"));
    setCentralWidget(textViewer);

    createActions();
    createMenus();

    setWindowTitle(tr("Simple Text Viewer"));
    resize(750, 400);
// ![1]
}
//! [1]

//! [2]
void MainWindow::closeEvent(QCloseEvent *)
{
    delete assistant;
}
//! [2]

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."));
}

//! [3]
void MainWindow::showDocumentation()
{
    assistant->showDocumentation("index.html");
}
//! [3]

void MainWindow::open()
{
    FindFileDialog dialog(textViewer, assistant);
    dialog.exec();
}

//! [4]
void MainWindow::createActions()
{
    assistantAct = new QAction(tr("Help Contents"), this);
    assistantAct->setShortcut(QKeySequence::HelpContents);
    connect(assistantAct, SIGNAL(triggered()), this, SLOT(showDocumentation()));
//! [4]

    openAct = new QAction(tr("&Open..."), this);
    openAct->setShortcut(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()));
//! [5]
}
//! [5]

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);
}
