/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/

#include "icore.h"

#include <extensionsystem/pluginmanager.h>

/*!
    \namespace Core
    \brief The Core namespace contains all classes that make up the Core plugin
    which constitute the basic functionality of Qt Creator.
*/

/*!
    \namespace Core::Internal
    \internal
*/

/*!
    \class Core::ICore
    \brief The ICore class allows access to the different part that make up
    the basic functionality of Qt Creator.

    You should never create a subclass of this interface. The one and only
    instance is created by the Core plugin. You can access this instance
    from your plugin through \c{Core::instance()}.

    \mainclass
*/

/*!
    \fn void ICore::showNewItemDialog(const QString &title,
                                      const QList<IWizard *> &wizards,
                                      const QString &defaultLocation = QString())
    \brief Opens a dialog where the user can choose from a set of \a wizards that
    create new files/classes/projects.

    The \a title argument is shown as the dialogs title. The path where the
    files will be created (if the user doesn't change it) is set
    in \a defaultLocation. It defaults to the path of the file manager's
    current file.

    \sa Core::DocumentManager
*/

/*!
    \fn bool ICore::showOptionsDialog(const QString &group = QString(),
                                      const QString &page = QString(),
                                      QWidget *parent = 0)
    \brief Opens the application options/preferences dialog with preselected
    \a page in a specified \a group.

    The arguments refer to the string IDs of the corresponding IOptionsPage.
*/

/*!
    \fn bool ICore::showWarningWithOptions(const QString &title, const QString &text,
                                   const QString &details = QString(),
                                   const QString &settingsCategory = QString(),
                                   const QString &settingsId = QString(),
                                   QWidget *parent = 0);

    \brief Show a warning message with a button that opens a settings page.

    Should be used to display configuration errors and point users to the setting.
    Returns true if the settings dialog was accepted.
*/


/*!
    \fn ActionManager *ICore::actionManager() const
    \brief Returns the application's action manager.

    The action manager is responsible for registration of menus and
    menu items and keyboard shortcuts.
*/

/*!
    \fn DocumentManager *ICore::fileManager() const
    \brief Returns the application's file manager.

    The file manager keeps track of files for changes outside the application.
*/

/*!
    \fn MessageManager *ICore::messageManager() const
    \brief Returns the application's message manager.

    The message manager is the interface to the "General" output pane for
    general application debug messages.
*/

/*!
    \fn EditorManager *ICore::editorManager() const
    \brief Returns the application's editor manager.

    The editor manager handles all editor related tasks like opening
    documents, the stack of currently open documents and the currently
    active document.
*/

/*!
    \fn ProgressManager *ICore::progressManager() const
    \brief Returns the application's progress manager.

    Use the progress manager to register a concurrent task to
    show a progress bar the way Qt Creator does it.
*/

/*!
    \fn ScriptManager *ICore::scriptManager() const
    \internal
*/

/*!
    \fn VariableManager *ICore::variableManager() const
    \brief Returns the application's variable manager.

    The variable manager is used to register application wide string variables
    like \c MY_PROJECT_DIR such that strings like \c{somecommand ${MY_PROJECT_DIR}/sub}
    can be resolved/expanded from anywhere in the application.
*/

/*!
    \fn VcsManager *ICore::vcsManager() const
    \brief Returns the application's vcs manager.

    The vcs manager can be used to e.g. retrieve information about
    the version control system used for a directory on hard disk.
    The actual functionality for a specific version control system
    must be implemented in a IVersionControl object and registered in
    the plugin manager's object pool.
*/

/*!
    \fn ModeManager *ICore::modeManager() const
    \brief Returns the application's mode manager.

    The mode manager handles everything related to the instances of IMode
    that were added to the plugin manager's object pool as well as their
    buttons and the tool bar with the round buttons in the lower left
    corner of Qt Creator.
*/

/*!
    \fn MimeDatabase *ICore::mimeDatabase() const
    \brief Returns the application's mime database.

    Use the mime database to manage mime types.
*/

/*!
    \fn QSettings *ICore::settings(QSettings::Scope scope = QSettings::UserScope) const
    \brief Returns the application's main settings object.

    You can use it to retrieve or set application wide settings
    (in contrast to session or project specific settings).

    If \a scope is QSettings::UserScope (the default), the
    users settings will be read from the users settings, with
    a fallback to global settings provided with Qt Creator.

    If \a scope is QSettings::SystemScope, only the system settings
    shipped with the current version of Qt Creator will be read. This
    functionality exists for internal purposes only.

    \see settingsDatabase()
*/

/*!
    \fn SettingsDatabase *ICore::settingsDatabase() const
    \brief Returns the application's settings database.

    The settings database is meant as an alternative to the regular settings
    object. It is more suitable for storing large amounts of data. The settings
    are application wide.

    \see SettingsDatabase
*/

/*!
    \fn QPrinter *ICore::printer() const
    \brief Returns the application's printer object.

    Always use this printer object for printing, so the different parts of the
    application re-use its settings.
*/

/*!
    \fn QString ICore::resourcePath() const
    \brief Returns the absolute path that is used for resources like
    project templates and the debugger macros.

    This abstraction is needed to avoid platform-specific code all over
    the place, since e.g. on Mac the resources are part of the application bundle.
*/


/*!
    \fn QString ICore::userResourcePath() const
    \brief Returns the absolute path in the users directory that is used for
    resources like project templates.

    Use this method for finding the place for resources that the user may
    write to, e.g. to allow for custom palettes or templates.
*/

/*!
    \fn QMainWindow *ICore::mainWindow() const
    \brief Returns the main application window.

    For use as dialog parent etc.
*/

/*!
    \fn IContext *ICore::currentContextObject() const
    \brief Returns the context object of the current main context.

    \sa ICore::updateAdditionalContexts()
    \sa ICore::addContextObject()
*/

/*!
    \fn void ICore::updateAdditionalContexts(const Context &remove, const Context &add)
    \brief Change the currently active additional contexts.

    Removes the list of additional contexts specified by \a remove and adds the
    list of additional contexts specified by \a add.

    \sa ICore::hasContext()
*/

/*!
    \fn bool ICore::hasContext(int context) const
    \brief Returns if the given \a context is currently one of the active contexts.

    \sa ICore::updateAdditionalContexts()
    \sa ICore::addContextObject()
*/

/*!
    \fn void ICore::addContextObject(IContext *context)
    \brief Registers an additional \a context object.

    After registration this context object gets automatically the
    current context object whenever its widget gets focus.

    \sa ICore::removeContextObject()
    \sa ICore::updateAdditionalContexts()
    \sa ICore::currentContextObject()
*/

/*!
    \fn void ICore::removeContextObject(IContext *context)
    \brief Unregisters a \a context object from the list of know contexts.

    \sa ICore::addContextObject()
    \sa ICore::updateAdditionalContexts()
    \sa ICore::currentContextObject()
}
*/

/*!
    \fn void ICore::openFiles(const QStringList &fileNames, OpenFilesFlags flags = None)
    \brief Open all files from a list of \a fileNames like it would be
    done if they were given to Qt Creator on the command line, or
    they were opened via \gui{File|Open}.
*/

/*!
    \fn ICore::ICore()
    \internal
*/

/*!
    \fn ICore::~ICore()
    \internal
*/

/*!
    \fn void ICore::coreOpened()
    \brief Emitted after all plugins have been loaded and the main window shown.
*/

/*!
    \fn void ICore::saveSettingsRequested()
    \brief Emitted to signal that the user has requested that the global settings
    should be saved to disk.

    At the moment that happens when the application is closed, and on \gui{Save All}.
*/

/*!
    \fn void ICore::optionsDialogRequested()
    \brief Signal that allows plugins to perform actions just before the \gui{Tools|Options}
    dialog is shown.
*/

/*!
    \fn void ICore::coreAboutToClose()
    \brief Plugins can do some pre-end-of-life actions when they get this signal.

    The application is guaranteed to shut down after this signal is emitted.
    It's there as an addition to the usual plugin lifecycle methods, namely
    IPlugin::aboutToShutdown(), just for convenience.
*/

/*!
    \fn void ICore::contextAboutToChange(Core::IContext *context)
    \brief Sent just before a new \a context becomes the current context
    (meaning that its widget got focus).
*/

/*!
    \fn void ICore::contextChanged(Core::IContext *context, const Core::Context &additionalContexts)
    \brief Sent just after a new \a context became the current context
    (meaning that its widget got focus), or if the additional context ids changed.
*/

#include "icore.h"
#include "mainwindow.h"
#include "documentmanager.h"

#include <QDir>
#include <QCoreApplication>
#include <QDebug>

#include <QStatusBar>

namespace Core {

// The Core Singleton
static ICore *m_instance = 0;

namespace Internal {
static MainWindow *m_mainwindow;
} // namespace Internal

using namespace Core::Internal;


ICore *ICore::instance()
{
    return m_instance;
}

ICore::ICore(MainWindow *mainwindow)
{
    m_instance = this;
    m_mainwindow = mainwindow;
    // Save settings once after all plugins are initialized:
    connect(ExtensionSystem::PluginManager::instance(), SIGNAL(initializationDone()),
            this, SIGNAL(saveSettingsRequested()));
}

ICore::~ICore()
{
    m_instance = 0;
    m_mainwindow = 0;
}

void ICore::showNewItemDialog(const QString &title,
                              const QList<IWizard *> &wizards,
                              const QString &defaultLocation,
                              const QVariantMap &extraVariables)
{
    m_mainwindow->showNewItemDialog(title, wizards, defaultLocation, extraVariables);
}

bool ICore::showOptionsDialog(const QString &group, const QString &page, QWidget *parent)
{
    return m_mainwindow->showOptionsDialog(group, page, parent);
}

bool ICore::showWarningWithOptions(const QString &title, const QString &text,
                                   const QString &details,
                                   const QString &settingsCategory,
                                   const QString &settingsId,
                                   QWidget *parent)
{
    return m_mainwindow->showWarningWithOptions(title, text,
                                                details, settingsCategory,
                                                settingsId, parent);
}

ActionManager *ICore::actionManager()
{
    return m_mainwindow->actionManager();
}

DocumentManager *ICore::documentManager()
{
    return DocumentManager::instance();
}

MessageManager *ICore::messageManager()
{
    return m_mainwindow->messageManager();
}

EditorManager *ICore::editorManager()
{
    return m_mainwindow->editorManager();
}

ProgressManager *ICore::progressManager()
{
    return m_mainwindow->progressManager();
}

ScriptManager *ICore::scriptManager()
{
    return m_mainwindow->scriptManager();
}

VariableManager *ICore::variableManager()
{
    return m_mainwindow->variableManager();
}

VcsManager *ICore::vcsManager()
{
    return m_mainwindow->vcsManager();
}

ModeManager *ICore::modeManager()
{
    return m_mainwindow->modeManager();
}

MimeDatabase *ICore::mimeDatabase()
{
    return m_mainwindow->mimeDatabase();
}

HelpManager *ICore::helpManager()
{
    return m_mainwindow->helpManager();
}

QSettings *ICore::settings(QSettings::Scope scope)
{
    return m_mainwindow->settings(scope);
}

SettingsDatabase *ICore::settingsDatabase()
{
    return m_mainwindow->settingsDatabase();
}

QPrinter *ICore::printer()
{
    return m_mainwindow->printer();
}

QString ICore::userInterfaceLanguage()
{
    return qApp->property("qtc_locale").toString();
}

#ifdef Q_OS_MAC
#  define SHARE_PATH "/../Resources"
#else
#  define SHARE_PATH "/../share/qtcreator"
#endif

QString ICore::resourcePath()
{
    return QDir::cleanPath(QCoreApplication::applicationDirPath() + QLatin1String(SHARE_PATH));
}

QString ICore::userResourcePath()
{
    // Create qtcreator dir if it doesn't yet exist
    const QString configDir = QFileInfo(settings(QSettings::UserScope)->fileName()).path();
    const QString urp = configDir + QLatin1String("/qtcreator");

    QFileInfo fi(urp + QLatin1Char('/'));
    if (!fi.exists()) {
        QDir dir;
        if (!dir.mkpath(urp))
            qWarning() << "could not create" << urp;
    }

    return urp;
}

IContext *ICore::currentContextObject()
{
    return m_mainwindow->currentContextObject();
}


QWidget *ICore::mainWindow()
{
    return m_mainwindow;
}

QStatusBar *ICore::statusBar()
{
    return m_mainwindow->statusBar();
}

void ICore::updateAdditionalContexts(const Context &remove, const Context &add)
{
    m_mainwindow->updateAdditionalContexts(remove, add);
}

bool ICore::hasContext(int context)
{
    return m_mainwindow->hasContext(context);
}

void ICore::addContextObject(IContext *context)
{
    m_mainwindow->addContextObject(context);
}

void ICore::removeContextObject(IContext *context)
{
    m_mainwindow->removeContextObject(context);
}

void ICore::openFiles(const QStringList &arguments, ICore::OpenFilesFlags flags)
{
    m_mainwindow->openFiles(arguments, flags);
}

void ICore::emitNewItemsDialogRequested()
{
    emit m_instance->newItemsDialogRequested();
}

void ICore::saveSettings()
{
    emit m_instance->saveSettingsRequested();

    ICore::settings(QSettings::SystemScope)->sync();
    ICore::settings(QSettings::UserScope)->sync();
}

} // namespace Core