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#include <QtGui>

#include "mainwindow.h"

#include "xmlwriter.h"

MainWindow::MainWindow()

{

    QMenu *fileMenu = new QMenu(tr("&File"));

    QAction *saveAction = fileMenu->addAction(tr("&Save..."));

    saveAction->setShortcut(tr("Ctrl+S"));

    QAction *quitAction = fileMenu->addAction(tr("E&xit"));

    quitAction->setShortcut(tr("Ctrl+Q"));

    menuBar()->addMenu(fileMenu);

    editor = new QTextEdit();

    QTextCursor cursor(editor->textCursor());

    cursor.movePosition(QTextCursor::Start); 

    QTextFrame *mainFrame = cursor.currentFrame();

    QTextCharFormat plainCharFormat;

    QTextCharFormat boldCharFormat;

    boldCharFormat.setFontWeight(QFont::Bold);

/*  main frame

//! [0]

    QTextFrame *mainFrame = cursor.currentFrame();

    cursor.insertText(...);

//! [0]

*/

    cursor.insertText("Text documents are represented by the "

                      "QTextDocument class, rather than by QString objects. "

                      "Each QTextDocument object contains information about "

                      "the document's internal representation, its structure, "

                      "and keeps track of modifications to provide undo/redo "

                      "facilities. This approach allows features such as the "

                      "layout management to be delegated to specialized "

                      "classes, but also provides a focus for the framework.",

                      plainCharFormat);

//! [1]

    QTextFrameFormat frameFormat;

    frameFormat.setMargin(32);

    frameFormat.setPadding(8);

    frameFormat.setBorder(4);

//! [1]

    cursor.insertFrame(frameFormat);

/*  insert frame

//! [2]

    cursor.insertFrame(frameFormat);

    cursor.insertText(...);

//! [2]

*/

    cursor.insertText("Documents are either converted from external sources "

                      "or created from scratch using Qt. The creation process "

                      "can done by an editor widget, such as QTextEdit, or by "

                      "explicit calls to the Scribe API.", boldCharFormat);

    cursor = mainFrame->lastCursorPosition();

/*  last cursor

//! [3]

    cursor = mainFrame->lastCursorPosition();

    cursor.insertText(...);

//! [3]

*/

    cursor.insertText("There are two complementary ways to visualize the "

                      "contents of a document: as a linear buffer that is "

                      "used by editors to modify the contents, and as an "

                      "object hierarchy containing structural information "

                      "that is useful to layout engines. In the hierarchical "

                      "model, the objects generally correspond to visual "

                      "elements such as frames, tables, and lists. At a lower "

                      "level, these elements describe properties such as the "

                      "style of text used and its alignment. The linear "

                      "representation of the document is used for editing and "

                      "manipulation of the document's contents.",

                      plainCharFormat);

    connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));

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

    setCentralWidget(editor);

    setWindowTitle(tr("Text Document Frames"));

}

void MainWindow::saveFile()

{

    QString fileName = QFileDialog::getSaveFileName(this,

        tr("Save document as:"), "", tr("XML (*.xml)"));

    if (!fileName.isEmpty()) {

        if (writeXml(fileName))

            setWindowTitle(fileName);

        else

            QMessageBox::warning(this, tr("Warning"),

                tr("Failed to save the document."), QMessageBox::Cancel,

                QMessageBox::NoButton);

    }

}

bool MainWindow::writeXml(const QString &fileName)

{

    XmlWriter documentWriter(editor->document());

    QDomDocument *domDocument = documentWriter.toXml();

    QFile file(fileName);

    if (file.open(QFile::WriteOnly)) {

        QTextStream textStream(&file);

        textStream.setCodec(QTextCodec::codecForName("UTF-8"));

        textStream << domDocument->toString(1).toUtf8();

        file.close();

        return true;

    }

    else

        return false;

}