/****************************************************************************

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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the Qt Designer of the Qt Toolkit.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** Foundation and appearing in the file LICENSE.LGPL included in the

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** $QT_END_LICENSE$

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****************************************************************************/

#include "codedialog_p.h"

#include "qdesigner_utils_p.h"

#include "iconloader_p.h"

#include <texteditfindwidget.h>

#include <QtGui/QAction>

#include <QtGui/QApplication>

#include <QtGui/QClipboard>

#include <QtGui/QDialogButtonBox>

#include <QtGui/QFileDialog>

#include <QtGui/QIcon>

#include <QtGui/QKeyEvent>

#include <QtGui/QMessageBox>

#include <QtGui/QPushButton>

#include <QtGui/QTextEdit>

#include <QtGui/QToolBar>

#include <QtGui/QVBoxLayout>

#include <QtCore/QDebug>

#include <QtCore/QDir>

#include <QtCore/QTemporaryFile>

QT_BEGIN_NAMESPACE

namespace qdesigner_internal {

// ----------------- CodeDialogPrivate

struct CodeDialog::CodeDialogPrivate {

    CodeDialogPrivate();

    QTextEdit *m_textEdit;

    TextEditFindWidget *m_findWidget;

    QString m_formFileName;

};

CodeDialog::CodeDialogPrivate::CodeDialogPrivate()

    : m_textEdit(new QTextEdit)

    , m_findWidget(new TextEditFindWidget)

{

}

// ----------------- CodeDialog

CodeDialog::CodeDialog(QWidget *parent) :

    QDialog(parent),

    m_impl(new CodeDialogPrivate)

{

    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);

    QVBoxLayout *vBoxLayout = new QVBoxLayout;

    // Edit tool bar

    QToolBar *toolBar = new QToolBar;

    const QIcon saveIcon = createIconSet(QLatin1String("filesave.png"));

    QAction *saveAction = toolBar->addAction(saveIcon, tr("Save..."));

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

    const QIcon copyIcon = createIconSet(QLatin1String("editcopy.png"));

    QAction *copyAction = toolBar->addAction(copyIcon, tr("Copy All"));

    connect(copyAction, SIGNAL(triggered()), this, SLOT(copyAll()));

    QAction *findAction = toolBar->addAction(

            TextEditFindWidget::findIconSet(),

            tr("&Find in Text..."),

            m_impl->m_findWidget, SLOT(activate()));

    findAction->setShortcut(QKeySequence::Find);

    vBoxLayout->addWidget(toolBar);

    // Edit

    m_impl->m_textEdit->setReadOnly(true);

    m_impl->m_textEdit->setMinimumSize(QSize(

                m_impl->m_findWidget->minimumSize().width(),

                500));

    vBoxLayout->addWidget(m_impl->m_textEdit);

    // Find

    m_impl->m_findWidget->setTextEdit(m_impl->m_textEdit);

    vBoxLayout->addWidget(m_impl->m_findWidget);

    // Button box

    QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Close);

    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

    // Disable auto default

    QPushButton *closeButton = buttonBox->button(QDialogButtonBox::Close);

    closeButton->setAutoDefault(false);

    vBoxLayout->addWidget(buttonBox);

    setLayout(vBoxLayout);

}

CodeDialog::~CodeDialog()

{

    delete m_impl;

}

void CodeDialog::setCode(const QString &code)

{

    m_impl->m_textEdit->setPlainText(code);

}

QString CodeDialog::code() const

{

   return m_impl->m_textEdit->toPlainText();

}

void CodeDialog::setFormFileName(const QString &f)

{

    m_impl->m_formFileName = f;

}

QString CodeDialog::formFileName() const

{

    return m_impl->m_formFileName;

}

bool CodeDialog::generateCode(const QDesignerFormWindowInterface *fw,

                              QString *code,

                              QString *errorMessage)

{

    // Generate temporary file name similar to form file name

    // (for header guards)

    QString tempPattern = QDir::tempPath();

    if (!tempPattern.endsWith(QDir::separator())) // platform-dependant

        tempPattern += QDir::separator();

    const QString fileName = fw->fileName();

    if (fileName.isEmpty()) {

        tempPattern += QLatin1String("designer");

    } else {

        tempPattern += QFileInfo(fileName).baseName();

    }

    tempPattern += QLatin1String("XXXXXX.ui");

    // Write to temp file

    QTemporaryFile tempFormFile(tempPattern);

    tempFormFile.setAutoRemove(true);

    if (!tempFormFile.open()) {

        *errorMessage = tr("A temporary form file could not be created in %1.").arg(QDir::tempPath());

        return false;

    }

    const QString tempFormFileName = tempFormFile.fileName();

    tempFormFile.write(fw->contents().toUtf8());

    if (!tempFormFile.flush())  {

        *errorMessage = tr("The temporary form file %1 could not be written.").arg(tempFormFileName);

        return false;

    }

    tempFormFile.close();

    // Run uic

    QByteArray rc;

    if (!runUIC(tempFormFileName, UIC_GenerateCode, rc, *errorMessage))

        return false;

    *code = QString::fromUtf8(rc);

    return true;

}

bool CodeDialog::showCodeDialog(const QDesignerFormWindowInterface *fw,

                                QWidget *parent,

                                QString *errorMessage)

{

    QString code;

    if (!generateCode(fw, &code, errorMessage))

        return false;

    CodeDialog dialog(parent);

    dialog.setWindowTitle(tr("%1 - [Code]").arg(fw->mainContainer()->windowTitle()));

    dialog.setCode(code);

    dialog.setFormFileName(fw->fileName());

    dialog.exec();

    return true;

}

void CodeDialog::slotSaveAs()

{

    // build the default relative name 'ui_sth.h'

    const QString headerSuffix = QString(QLatin1Char('h'));

    QString filter;

    const QString uiFile = formFileName();

    if (!uiFile.isEmpty()) {

        filter = QLatin1String("ui_");

        filter += QFileInfo(uiFile).baseName();

        filter += QLatin1Char('.');

        filter += headerSuffix;

    }

    // file dialog

    while (true) {

        const QString fileName =

            QFileDialog::getSaveFileName (this, tr("Save Code"), filter, tr("Header Files (*.%1)").arg(headerSuffix));

        if (fileName.isEmpty())

            break;

         QFile file(fileName);

         if (!file.open(QIODevice::WriteOnly|QIODevice::Text)) {

             warning(tr("The file %1 could not be opened: %2").arg(fileName).arg(file.errorString()));

             continue;

         }

         file.write(code().toUtf8());

         if (!file.flush()) {

             warning(tr("The file %1 could not be written: %2").arg(fileName).arg(file.errorString()));

             continue;

         }

         file.close();

         break;

    }

}

void CodeDialog::warning(const QString &msg)

{

     QMessageBox::warning(

             this, tr("%1 - Error").arg(windowTitle()),

             msg, QMessageBox::Close);

}

void CodeDialog::copyAll()

{

    QApplication::clipboard()->setText(code());

}

} // namespace qdesigner_internal

QT_END_NAMESPACE