plasma-framework/packagestructure.h

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/******************************************************************************
* Copyright 2007 by Aaron Seigo <aseigo@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 PACKAGESTRUCTURE_H
#define PACKAGESTRUCTURE_H
#include <QtCore/QStringList>
#include <QtCore/QSharedData>
#include <KDE/KGenericFactory>
#include <KDE/KLocale>
#include <KDE/KSharedPtr>
#include <plasma/version.h>
class KConfigBase;
namespace Plasma
{
class PackageStructurePrivate;
/**
* @brief A description of the expected file structure of a given package type
*
* PackageStructure defines what is in a package. This information is used
* to create packages and provides a way to programatically refer to contents.
*
* An example usage of this class might be:
*
@code
PackageStructure structure;
structure.addDirectoryDefinition("images", "pics/", i18n("Images"));
QStringList mimetypes;
mimetypes << "image/svg" << "image/png" << "image/jpeg";
structure.setMimetypes("images", mimetypes);
structure.addDirectoryDefinition("scripts", "code/", i18n("Executable Scripts"));
mimetypes.clear();
mimetypes << "text/\*";
structure.setMimetypes("scripts", mimetypes);
structure.addFileDefinition("mainscript", "code/main.js", i18n("Main Script File"));
structure.setRequired("mainscript", true);
@endcode
* One may also choose to create a subclass of PackageStructure and include the setup
* in the constructor.
*
* Either way, PackageStructure creates a sort of "contract" between the packager and
* the application which is also self-documenting.
**/
class PLASMA_EXPORT PackageStructure : public QObject, public QSharedData
{
Q_OBJECT
public:
typedef KSharedPtr<PackageStructure> Ptr;
/**
* Default constructor for a package structure definition
*
* @arg type the type of package. This is often application specific.
**/
explicit PackageStructure(QObject *parent = 0, const QString &type = i18n("Invalid"));
/**
* Destructor
**/
virtual ~PackageStructure();
/**
* Assignment operator
**/
PackageStructure& operator=(const PackageStructure& rhs);
/**
* Loads a package format by name.
*
* @arg format If not empty, attempts to locate the given format, either
* from built-ins or via plugins.
* @return a package that matches the format, if available. The caller
* is responsible for deleting the object.
*/
static PackageStructure::Ptr load(const QString &packageFormat);
/**
* Type of package this structure describes
**/
QString type() const;
/**
* The directories defined for this package
**/
QList<const char*> directories() const;
/**
* The required directories defined for this package
**/
QList<const char*> requiredDirectories() const;
/**
* The individual files, by key, that are defined for this package
**/
QList<const char*> files() const;
/**
* The individual required files, by key, that are defined for this package
**/
QList<const char*> requiredFiles() const;
/**
* Adds a directory to the structure of the package. It is added as
* a not-required element with no associated mimetypes.
*
* @param key used as an internal label for this directory
* @param path the path within the the package for this directory
* @param name the user visible (translated) name for the directory
**/
void addDirectoryDefinition(const char* key, const QString& path, const QString& name);
/**
* Adds a file to the structure of the package. It is added as
* a not-required element with no associated mimetypes.
*
* @param key used as an internal label for this file
* @param path the path within the the package for this file
* @param name the user visible (translated) name for the file
**/
void addFileDefinition(const char* key, const QString& path, const QString& name);
/**
* @return path relative to the package root for the given entry
**/
QString path(const char* key) const;
/**
* @return user visible name for the given entry
**/
QString name(const char* key) const;
/**
* Sets whether or not a given part of the structure is required or not.
* The path must already have been added using addDirectoryDefinition
* or addFileDefinition.
*
* @param path the path of the entry within the package
* @param required true if this entry is required, false if not
*/
void setRequired(const char* key, bool required);
/**
* @return true if the item at path exists and is required
**/
bool isRequired(const char* key) const;
/**
* Defines the default mimetypes for any definitions that do not have
* associated mimetypes. Handy for packages with only one or predominantly
* one file type.
*
* @param mimetypes a list of mimetypes
**/
void setDefaultMimetypes(QStringList mimetypes);
/**
* Define mimetypes for a given part of the structure
* The path must already have been added using addDirectoryDefinition
* or addFileDefinition.
*
* @param path the path of the entry within the package
* @param mimetypes a list of mimetypes
**/
void setMimetypes(const char* key, QStringList mimetypes);
/**
* @return the mimetypes associated with the path, if any
**/
QStringList mimetypes(const char* key) const;
/**
* Sets the path to the package. Useful for package formats
* which do not have well defined contents prior to installation.
*/
void setPath(const QString &path);
/**
* @return the path to the package, or QString() if none
*/
QString path() const;
/**
* Read a package structure from a config file.
*/
void read(const KConfigBase *config);
/**
* Write this package structure to a config file.
*/
void write(KConfigBase *config) const;
/**
* Installs a package matching this package structure. By default installs a
* native Plasma::Package.
*
* @param archivePath path to the package archive file
* @param packageRoot path to the directory where the package should be
* installed to
* @return true on successful installation, false otherwise
**/
virtual bool installPackage(const QString &archivePath, const QString &packageRoot);
/**
* Uninstalls a package matching this package structure.
*
* @arg packageName the name of the package to remove
* @arg packageRoot path to the directory where the package should be installed to
* @return true on successful removal of the package, false otherwise
*/
virtual bool uninstallPackage(const QString& packageName, const QString& packageRoot);
/**
* @return the prefix inserted between the base path and content entries
*/
QString contentsPrefix() const;
protected:
/**
* Sets the prefix that all the contents in this package should
* appear under. This defaults to "contents/" and is added automatically
* between the base path and the entries as defined by the package
* structure
*
* @arg prefix the directory prefix to use
*/
void setContentsPrefix(const QString &prefix);
/**
* Called whenever the path changes so that subclasses may take
* package specific actions.
*/
virtual void pathChanged();
private:
PackageStructurePrivate * const d;
};
/**
* Register an applet when it is contained in a loadable module
*/
#define K_EXPORT_PLASMA_PACKAGESTRUCTURE(libname, classname) \
K_PLUGIN_FACTORY(factory, registerPlugin<classname>();) \
K_EXPORT_PLUGIN(factory("plasma_packagestructure_" #libname)) \
K_EXPORT_PLUGIN_VERSION(PLASMA_VERSION)
} // Plasma namespace
#endif