/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
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** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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#include "plugindialog.h"

#include <extensionsystem/pluginmanager.h>
#include <extensionsystem/pluginview.h>
#include <extensionsystem/plugindetailsview.h>
#include <extensionsystem/pluginerrorview.h>
#include <extensionsystem/pluginspec.h>

#include <QtGui/QVBoxLayout>
#include <QtGui/QHBoxLayout>
#include <QtGui/QDialog>
#include <QtGui/QDialogButtonBox>
#include <QtGui/QPushButton>
#include <QtGui/QLabel>
#include <QtDebug>

using namespace Core::Internal;

bool PluginDialog::m_isRestartRequired = false;

PluginDialog::PluginDialog(QWidget *parent)
    : QDialog(parent),
      m_view(new ExtensionSystem::PluginView(ExtensionSystem::PluginManager::instance(), this))
{
    QVBoxLayout *vl = new QVBoxLayout(this);
    vl->addWidget(m_view);

    m_detailsButton = new QPushButton(tr("Details"), this);
    m_errorDetailsButton = new QPushButton(tr("Error Details"), this);
    m_closeButton = new QPushButton(tr("Close"), this);
    m_detailsButton->setEnabled(false);
    m_errorDetailsButton->setEnabled(false);
    m_closeButton->setEnabled(true);
    m_closeButton->setDefault(true);

    m_restartRequired = new QLabel(tr("Restart required."), this);
    if (!m_isRestartRequired)
        m_restartRequired->setVisible(false);

    QHBoxLayout *hl = new QHBoxLayout;
    hl->addWidget(m_detailsButton);
    hl->addWidget(m_errorDetailsButton);
    hl->addSpacing(10);
    hl->addWidget(m_restartRequired);
    hl->addStretch(5);
    hl->addWidget(m_closeButton);

    vl->addLayout(hl);


    resize(650, 400);
    setWindowTitle(tr("Installed Plugins"));

    connect(m_view, SIGNAL(currentPluginChanged(ExtensionSystem::PluginSpec*)),
            this, SLOT(updateButtons()));
    connect(m_view, SIGNAL(pluginActivated(ExtensionSystem::PluginSpec*)),
            this, SLOT(openDetails(ExtensionSystem::PluginSpec*)));
    connect(m_view, SIGNAL(pluginSettingsChanged(ExtensionSystem::PluginSpec*)),
            this, SLOT(updateRestartRequired()));
    connect(m_detailsButton, SIGNAL(clicked()), this, SLOT(openDetails()));
    connect(m_errorDetailsButton, SIGNAL(clicked()), this, SLOT(openErrorDetails()));
    connect(m_closeButton, SIGNAL(clicked()), this, SLOT(closeDialog()));
    updateButtons();
}

void PluginDialog::closeDialog()
{
    ExtensionSystem::PluginManager::instance()->writeSettings();
    accept();
}

void PluginDialog::updateRestartRequired()
{
    // just display the notice all the time after once changing something
    m_isRestartRequired = true;
    m_restartRequired->setVisible(true);
}

void PluginDialog::updateButtons()
{
    ExtensionSystem::PluginSpec *selectedSpec = m_view->currentPlugin();
    if (selectedSpec) {
        m_detailsButton->setEnabled(true);
        m_errorDetailsButton->setEnabled(selectedSpec->hasError()
                                         || selectedSpec->isDisabledByDependency()
                                         || !selectedSpec->isEnabled());
    } else {
        m_detailsButton->setEnabled(false);
        m_errorDetailsButton->setEnabled(false);
    }
}


void PluginDialog::openDetails()
{
    openDetails(m_view->currentPlugin());
}

void PluginDialog::openDetails(ExtensionSystem::PluginSpec *spec)
{
    if (!spec)
        return;
    QDialog dialog(this);
    dialog.setWindowTitle(tr("Plugin Details of %1").arg(spec->name()));
    QVBoxLayout *layout = new QVBoxLayout;
    dialog.setLayout(layout);
    ExtensionSystem::PluginDetailsView *details = new ExtensionSystem::PluginDetailsView(&dialog);
    layout->addWidget(details);
    details->update(spec);
    QDialogButtonBox *buttons = new QDialogButtonBox(QDialogButtonBox::Close, Qt::Horizontal, &dialog);
    layout->addWidget(buttons);
    connect(buttons, SIGNAL(accepted()), &dialog, SLOT(accept()));
    connect(buttons, SIGNAL(rejected()), &dialog, SLOT(reject()));
    dialog.resize(400, 500);
    dialog.exec();
}

void PluginDialog::openErrorDetails()
{
    ExtensionSystem::PluginSpec *spec = m_view->currentPlugin();
    if (!spec)
        return;
    QDialog dialog(this);
    dialog.setWindowTitle(tr("Plugin Errors of %1").arg(spec->name()));
    QVBoxLayout *layout = new QVBoxLayout;
    dialog.setLayout(layout);
    ExtensionSystem::PluginErrorView *errors = new ExtensionSystem::PluginErrorView(&dialog);
    layout->addWidget(errors);
    errors->update(spec);
    QDialogButtonBox *buttons = new QDialogButtonBox(QDialogButtonBox::Close, Qt::Horizontal, &dialog);
    layout->addWidget(buttons);
    connect(buttons, SIGNAL(accepted()), &dialog, SLOT(accept()));
    connect(buttons, SIGNAL(rejected()), &dialog, SLOT(reject()));
    dialog.resize(500, 300);
    dialog.exec();
}