244 lines
8.0 KiB
C++
244 lines
8.0 KiB
C++
/******************************************************************************
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* Copyright 2007 by Aaron Seigo <aseigo@kde.org> *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public License *
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* along with this library; see the file COPYING.LIB. If not, write to *
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, *
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* Boston, MA 02110-1301, USA. *
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*******************************************************************************/
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#ifndef PACKAGESTRUCTURE_H
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#define PACKAGESTRUCTURE_H
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#include <QtCore/QStringList>
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#include <QtCore/QSharedData>
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#include <KGenericFactory>
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#include <KLocale>
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#include <KSharedPtr>
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#include <plasma/plasma_export.h>
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class KConfigBase;
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namespace Plasma
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{
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/**
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* @brief A description of the expected file structure of a given package type
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*
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* PackageStructure defines what is in a package. This information is used
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* to create packages and provides a way to programatically refer to contents.
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*
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* An example usage of this class might be:
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*
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@code
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PackageStructure structure;
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structure.addDirectoryDefinition("images", "pics/", i18n("Images"));
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QStringList mimetypes;
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mimetypes << "image/svg" << "image/png" << "image/jpeg";
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structure.setMimetypes("images", mimetypes);
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structure.addDirectoryDefinition("scripts", "code/", i18n("Executable Scripts"));
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mimetypes.clear();
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mimetypes << "text/\*";
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structure.setMimetypes("scripts", mimetypes);
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structure.addFileDefinition("mainscript", "code/main.js", i18n("Main Script File"));
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structure.setRequired("mainscript", true);
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@endcode
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* One may also choose to create a subclass of PackageStructure and include the setup
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* in the constructor.
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*
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* Either way, PackageStructure creates a sort of "contract" between the packager and
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* the application which is also self-documenting.
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**/
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class PLASMA_EXPORT PackageStructure : public QObject, public QSharedData
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{
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Q_OBJECT
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public:
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typedef KSharedPtr<PackageStructure> Ptr;
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/**
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* Default constructor for a package structure definition
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*
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* @arg type the type of package. This is often application specific.
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**/
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explicit PackageStructure(QObject *parent = 0, const QString &type = i18n("Invalid"));
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/**
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* Destructor
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**/
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virtual ~PackageStructure();
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/**
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* Assignment operator
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**/
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PackageStructure& operator=(const PackageStructure& rhs);
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/**
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* Loads a package format by name.
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*
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* @arg format If not empty, attempts to locate the given format, either
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* from built-ins or via plugins.
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* @return a package that matches the format, if available. The caller
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* is responsible for deleting the object.
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*/
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static PackageStructure::Ptr load(const QString &packageFormat);
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/**
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* Type of package this structure describes
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**/
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QString type() const;
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/**
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* The directories defined for this package
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**/
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QList<const char*> directories() const;
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/**
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* The required directories defined for this package
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**/
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QList<const char*> requiredDirectories() const;
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/**
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* The individual files, by key, that are defined for this package
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**/
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QList<const char*> files() const;
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/**
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* The individual required files, by key, that are defined for this package
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**/
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QList<const char*> requiredFiles() const;
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/**
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* Adds a directory to the structure of the package. It is added as
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* a not-required element with no associated mimetypes.
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*
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* @param key used as an internal label for this directory
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* @param path the path within the the package for this directory
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* @param name the user visible (translated) name for the directory
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**/
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void addDirectoryDefinition(const char* key, const QString& path, const QString& name);
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/**
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* Adds a file to the structure of the package. It is added as
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* a not-required element with no associated mimetypes.
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*
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* @param key used as an internal label for this file
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* @param path the path within the the package for this file
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* @param name the user visible (translated) name for the file
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**/
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void addFileDefinition(const char* key, const QString& path, const QString& name);
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/**
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* @return path relative to the package root for the given entry
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**/
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QString path(const char* key) const;
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/**
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* @return user visible name for the given entry
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**/
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QString name(const char* key) const;
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/**
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* Sets whether or not a given part of the structure is required or not.
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* The path must already have been added using addDirectoryDefinition
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* or addFileDefinition.
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*
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* @param path the path of the entry within the package
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* @param required true if this entry is required, false if not
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*/
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void setRequired(const char* key, bool required);
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/**
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* @return true if the item at path exists and is required
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**/
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bool required(const char* key) const;
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/**
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* Defines the default mimetypes for any definitions that do not have
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* associated mimetypes. Handy for packages with only one or predominantly
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* one file type.
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*
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* @param mimetypes a list of mimetypes
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**/
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void setDefaultMimetypes(QStringList mimetypes);
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/**
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* Define mimetypes for a given part of the structure
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* The path must already have been added using addDirectoryDefinition
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* or addFileDefinition.
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*
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* @param path the path of the entry within the package
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* @param mimetypes a list of mimetypes
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**/
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void setMimetypes(const char* key, QStringList mimetypes);
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/**
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* @return the mimetypes associated with the path, if any
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**/
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QStringList mimetypes(const char* key) const;
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/**
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* Sets the path to the package. Useful for package formats
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* which do not have well defined contents prior to installation.
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*/
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void setPath(const QString &path);
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/**
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* @return the path to the package, or QString() if none
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*/
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QString path() const;
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/**
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* Read a package structure from a config file.
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*/
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void read(const KConfigBase *config);
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/**
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* Write this package structure to a config file.
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*/
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void write(KConfigBase *config) const;
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/**
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* Installs a package matching this package structure. By default simply calls
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* Plasma::Package::install.
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*
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* @param archivePath path to the package archive file
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* @param packageRoot path to the directory where the package should be
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* installed to
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* @return true on successful installation, false otherwise
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**/
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virtual bool installPackage(const QString &archivePath, const QString &packageRoot);
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protected:
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virtual void pathChanged();
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private:
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class Private;
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Private * const d;
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};
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/**
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* Register an applet when it is contained in a loadable module
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*/
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#define K_EXPORT_PLASMA_PACKAGESTRUCTURE(libname, classname) \
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K_PLUGIN_FACTORY(factory, registerPlugin<classname>();) \
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K_EXPORT_PLUGIN(factory("plasma_packagestructure_" #libname))
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} // Plasma namespace
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#endif
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