/*
    This file is part of Akonadi Mail.

    Copyright (c) 2009 - 2010 Tobias Koenig <tokoe@kde.org>

    This library is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public License as published by
    the Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.

    This library is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
    License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to the
    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
*/

#ifndef AKONADI_STANDARDMAILACTIONMANAGER_H
#define AKONADI_STANDARDMAILACTIONMANAGER_H

#include "akonadi-kmime_export.h"

#include <akonadi/standardactionmanager.h>

#include <QtCore/QObject>

class KAction;
class KActionCollection;
class KJob;
class QItemSelectionModel;
class QWidget;

namespace Akonadi {

class Item;

/**
 * @short Manages emails specific actions for collection and item views.
 *
 * @author Andras Mantia <amantia@kde.org>
 * @since 4.6
 */
class AKONADI_KMIME_EXPORT StandardMailActionManager : public QObject
{
  Q_OBJECT

  public:
    /**
     * Describes the supported actions.
     */
    enum Type {
      MarkMailAsRead = StandardActionManager::LastType + 1, ///< Marks a mail as read
      MarkMailAsUnread,                                 ///< Marks a mail as unread
      MarkMailAsImportant,                              ///< Marks a mail as important
      MarkMailAsActionItem,                             ///< Marks a mail as action item
      MarkAllMailAsRead,                                ///< Marks all mails in a folder as read.
      MarkAllMailAsUnread,                              ///< Marks all mails in a folder as unread.
      MarkAllMailAsImportant,                           ///< Marks all mails in a folder as important
      MarkAllMailAsActionItem,                          ///< Marks all mails in a folder as action item
      MoveToTrash,                                      ///< Move all selected messages and folders to trash.
      MoveAllToTrash,                                   ///< Move all messages of the current folder to trash.
      RemoveDuplicates,                                 ///< Removes all duplicated messages.
      EmptyAllTrash,                                    ///< Empties trash folders on all accounts
      EmptyTrash,                                       ///< Empties the trash folder, if a trash folder was selected
      LastType                                          ///< Marks last action.
    };

    /**
     * Creates a new standard mail action manager.
     *
     * @param actionCollection The action collection to operate on.
     * @param parent The parent widget.
     */
    explicit StandardMailActionManager( KActionCollection *actionCollection, QWidget *parent = 0 );

    /**
     * Destroys the standard mail action manager.
     */
    ~StandardMailActionManager();

    /**
     * Sets the collection selection model based on which the collection
     * related actions should operate. If none is set, all collection actions
     * will be disabled.
     */
    void setCollectionSelectionModel( QItemSelectionModel *selectionModel );

    /**
     * Sets the item selection model based on which the item related actions
     * should operate. If none is set, all item actions will be disabled.
     */
    void setItemSelectionModel( QItemSelectionModel* selectionModel );

    /**
     * Creates the action of the given type and adds it to the action collection
     * specified in the constructor if it does not exist yet. The action is
     * connected to its default implementation provided by this class.
     */
    KAction* createAction( Type type );

    /**
     * Creates the action of the given type and adds it to the action collection
     * specified in the constructor if it does not exist yet. The action is
     * connected to its default implementation provided by this class.
     */
    KAction* createAction( StandardActionManager::Type type );

    /**
     * Convenience method to create all standard actions.
     * @see createAction()
     */
    void createAllActions();

    /**
     * Returns the action of the given type, 0 if it has not been created (yet).
     */
    KAction* action( Type type ) const;

    /**
     * Returns the action of the given type, 0 if it has not been created (yet).
     */
    KAction* action( StandardActionManager::Type type ) const;

    /**
     * Sets the label of the action @p type to @p text, which is used during
     * updating the action state and substituted according to the number of
     * selected objects. This is mainly useful to customize the label of actions
     * that can operate on multiple objects.
     *
     * Example:
     * @code
     * acctMgr->setActionText( Akonadi::StandardActionManager::CopyItems,
     *                         ki18np( "Copy Item", "Copy %1 Items" ) );
     * @endcode
     */
    void setActionText( StandardActionManager::Type type, const KLocalizedString &text );

    /**
     * Sets whether the default implementation for the given action @p type
     * shall be executed when the action is triggered.
     *
     * @param intercept If @c false, the default implementation will be executed,
     *                  if @c true no action is taken.
     */
    void interceptAction( Type type, bool intercept = true );

    /**
     * Sets whether the default implementation for the given action @p type
     * shall be executed when the action is triggered.
     *
     * @param intercept If @c false, the default implementation will be executed,
     *                  if @c true no action is taken.
     */
    void interceptAction( StandardActionManager::Type type, bool intercept = true );

    /**
     * Returns the list of collections that are currently selected.
     * The list is empty if no collection is currently selected.
     */
    Akonadi::Collection::List selectedCollections() const;

    /**
     * Returns the list of items that are currently selected.
     * The list is empty if no item is currently selected.
     */
    Akonadi::Item::List selectedItems() const;

    /**
     * Sets the favorite collections model based on which the collection
     * relatedactions should operate. If none is set, the "Add to Favorite Folders" action
     * will be disabled.
     *
     */
    void setFavoriteCollectionsModel( FavoriteCollectionsModel *favoritesModel );

    /**
     * Sets the favorite collection selection model based on which the favorite
     * collection related actions should operate. If none is set, all favorite modifications
     * actions will be disabled.
     *
     */
    void setFavoriteSelectionModel( QItemSelectionModel *selectionModel );

    void setCollectionPropertiesPageNames( const QStringList &names );

    Akonadi::StandardActionManager* standardActionManager() const;
  Q_SIGNALS:
    /**
     * This signal is emitted whenever the action state has been updated.
     * In case you have special needs for changing the state of some actions,
     * connect to this signal and adjust the action state.
     */
    void actionStateUpdated();

  private:
    //@cond PRIVATE
    class Private;
    Private* const d;

    Q_PRIVATE_SLOT( d, void updateActions() )
    Q_PRIVATE_SLOT( d, void slotMarkAs() )
    Q_PRIVATE_SLOT( d, void slotMarkAllAs() )
    Q_PRIVATE_SLOT( d, void slotMoveToTrash() )
    Q_PRIVATE_SLOT( d, void slotMoveAllToTrash() )
    Q_PRIVATE_SLOT( d, void slotRemoveDuplicates() )
    Q_PRIVATE_SLOT( d, void slotEmptyAllTrash() )
    Q_PRIVATE_SLOT( d, void slotEmptyTrash() )
    //@endcond
};

}

#endif
