This class is used to manage all plugins loaded by the application. More...

#include <ExtensionManager.h>

Inheritance diagram for camitk::ExtensionManager:

Collaboration diagram for camitk::ExtensionManager:

Public Types
enum	ExtensionType { ACTION, COMPONENT, APPLICATION, VIEWER }

Static Public Member Functions
static void	autoload ()
	Autoload component and action extensions. More...

static void	autoload (ExtensionType type)
	Autoload all the extension of a given type. More...

static QString	getInstallationString (QString file, const QString &globalInstallDir, const QString &userInstallDir, const QString &currentWorkingDir)
	Returns a three char string that corresponds to the installation directory of a given shared library. More...

static bool	loadExtension (ExtensionType type, QString file)
	Load a specific extension from a file. More...

Component extension list management
static ComponentExtension *	getComponentExtension (QString)
	get the plugin corresponding to a given extension or name. More...

static const QList< ComponentExtension * >	getComponentExtensionsList ()
	Get the list of registered ComponentExtension. More...

static ComponentExtension *	getDataDirectoryComponentExtension (QString)
	get the plugin corresponding to a given data directory component extension's name. More...

static const QList< ComponentExtension * >	getDataDirectoryComponentsList ()
	Get the list of registered ComponentExtension working on directory. More...

static QStringList	getFileExtensions ()
	get the list of all the suffixes managed by registered component extensions (all possible file suffix) More...

static QStringList	getDataDirectoryExtNames ()
	get the list of all the name of the registered Component data directory More...

static void	registerFileExtension (QString fileExtension)
	Register the file extension with the current application for opening This function is called by registerFileExtensions. More...

static bool	unloadComponentExtension (QString)
	Unload a plugin corresponding to a given extension or component name. More...

Action extension list management
static void	unloadAllActionExtensions ()
	unload all action extensions and delete instantiated actions More...

static const QList< ActionExtension * >	getActionExtensionsList ()
	Get the list of registered ActionExtension. More...

static ActionExtension *	getActionExtension (QString)
	Get the ActionExtension corresponding to the given shared library file. More...

static bool	unloadActionExtension (QString)
	Unload an action extension using its .dll/.so/.dylib filename. More...

Viewer extension list management
static void	unloadAllViewerExtensions ()
	unload all viewer extensions and delete instantiated actions More...

static const QList< ViewerExtension * >	getViewerExtensionsList ()
	Get the list of registered ViewerExtension. More...

static ViewerExtension *	getViewerExtension (QString)
	Get the Viewer Extension corresponding to the given shared library file. More...

static bool	unloadViewerExtension (QString)
	Unload an viewer extension using its .dll/.so/.dylib filename. More...

Static Private Member Functions
static void	addLibraryPath (QDir potentialPath, QString potentialLibDir)
	check if the given directory contains an extension repository and if it does update PATH (on windows) and call QCoreApplication::addLibraryPath for the given directory and all derived possible extension directories (actions, components and viewers) To check if it contains an extension repository, the given QString is used More...

static QMap< QString, ActionExtension * > &	getActionExtensionMap ()
	get the singleton map of loaded action plugins (the key is the shared object/dll/dylib filename) This is the private (intern) method. More...

static QMap< QString, ComponentExtension * > &	getComponentExtensionMap ()
	get the singleton map of loaded component plugins for files (the key is the file extension) This is the private (intern) method. More...

static QMap< QString, ComponentExtension * > &	getDataDirectoryComponentExtensionMap ()
	get the singleton map of loaded component plugins for data directory (the key is the name) This is the private (intern) method. More...

static QStringList	getExtensionFilter ()
	return the extensions file filter More...

static QStringList	getPluginFileNames (QDir)
	return the list of shared objects in a directory considering debug/release on MSVC More...

static QMap< QString, ViewerExtension * > &	getViewerExtensionMap ()
	get the singleton map of loaded viewer plugins (the key is the shared object/dll/dylib filename) This is the private (intern) method. More...

static void	initPrivateLibDirs ()
	Add the private library directories (lib/camitk-version) in the current session PATH: More...

Custom comparaison methods
static bool	componentExtensionLessThan (const ComponentExtension left, const ComponentExtension right)
	Custom comparaison method between two ComponentExtension* This method uses the QString::<() (less than operator) to perform the comparaison of two ComponentExtension* based on their name. More...

static bool	actionExtensionLessThan (ActionExtension left, ActionExtension right)
	Custom comparaison method between two ActionExtension* This method uses the QString::<() (less than operator) to perform the comparaison of two ActionExtension* based on their name. More...

static bool	viewerExtensionLessThan (ViewerExtension left, ViewerExtension right)
	Custom comparaison method between two ViewerExtension* based on the same principle as actionExtensionLessThan(..) More...

Detailed Description

This class is used to manage all plugins loaded by the application.

The current version is able to load dynamic library for

This class is a contained for all the loaded extension. It contains only static members.

Member Enumeration Documentation

◆ ExtensionType

enum camitk::ExtensionManager::ExtensionType

describes the CamiTK Extension Type (Action, Component, Application...). CamiTK follows Component-Based programming architecture. The Service Layer defines four types of extensions.

Enumerator
ACTION	Action extensions: manages the processing logic.
COMPONENT	Component extensions: manages the data logic.
APPLICATION	MainWindow extensions: manages the application logic.
VIEWER	Viewer extensions: manages the presentation and user interaction logic.

Member Function Documentation

◆ actionExtensionLessThan()

bool camitk::ExtensionManager::actionExtensionLessThan	(	ActionExtension *	left,
		ActionExtension *	right
	)

staticprivate

Custom comparaison method between two ActionExtension* This method uses the QString::<() (less than operator) to perform the comparaison of two ActionExtension* based on their name.

This method is used for sorting alphabitically a list of ActionExtension*.

Parameters

left	left ActionExtension* to compare
right	right ActionExtension* to compare

Returns: the comparaison result, based on their name (alphabitically order)

Note: This method does not take const input arguments as the ActionExtension::getName() accessor is a mutable method (not const). This should be updated, but would change the CamiTK API check the Wiki for Code developer guidelines

◆ addLibraryPath()

void camitk::ExtensionManager::addLibraryPath	(	QDir	potentialPath,
		QString	potentialLibDir
	)

staticprivate

check if the given directory contains an extension repository and if it does update PATH (on windows) and call QCoreApplication::addLibraryPath for the given directory and all derived possible extension directories (actions, components and viewers) To check if it contains an extension repository, the given QString is used

◆ autoload() [1/2]

void camitk::ExtensionManager::autoload ( )

static

Autoload component and action extensions.

Referenced by camitk::Application::Application(), and main().

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◆ autoload() [2/2]

void camitk::ExtensionManager::autoload ( ExtensionManager::ExtensionType type )

static

Autoload all the extension of a given type.

This method try to load all the extensions of the given type that are found (in this specific order) :

in the current working directory (considered as an install directory), this should be the build directory (load extensions that are just being compiled, before their installation
in the user config directory (CamiTK user install)
in the system-wide install (CamiTK global install)
and in the list of user-registered extensions (stored in the configuration directory)

Duplicates found within the installation directory are removed (e.g. if you have the extension x.so in the build directory as well as the user directory, only the extension in the build directory will be loaded (it takes precedence).

Parameters

type	the extension type

References CAMITK_TRACE_ALT, and getPluginFileNames().

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◆ componentExtensionLessThan()

bool camitk::ExtensionManager::componentExtensionLessThan	(	const ComponentExtension *	left,
		const ComponentExtension *	right
	)

staticprivate

Custom comparaison method between two ComponentExtension* This method uses the QString::<() (less than operator) to perform the comparaison of two ComponentExtension* based on their name.

This method is used for sorting alphabitically a list of ComponentExtension*.

Parameters

left	left ComponentExtension* to compare
right	right ComponentExtension* to compare

Returns: the comparaison result, based on their name (alphabitically order)

Referenced by getComponentExtension().

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◆ getActionExtension()

ActionExtension * camitk::ExtensionManager::getActionExtension ( QString file )

static

Get the ActionExtension corresponding to the given shared library file.

If the given shared library is not loaded return nullptr. The shared library file should be given as a complete filepath in the QString.

Returns: nullptr if the given shared library complete path is not loaded.

References unloadViewerExtension().

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◆ getActionExtensionMap()

QMap< QString, ActionExtension * > & camitk::ExtensionManager::getActionExtensionMap ( )

staticprivate

get the singleton map of loaded action plugins (the key is the shared object/dll/dylib filename) This is the private (intern) method.

The action extension map is updated by loadActionExtension, unloadActionExtension and autoloadActionExtensions. This method follows the "construct on first use" idiom/design-pattern. It therefore avoids the infamous "static initialization order fiasco", see http://www.parashift.com/c++-faq/ctors.html

References unloadActionExtension().

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◆ getActionExtensionsList()

const QList< ActionExtension * > camitk::ExtensionManager::getActionExtensionsList ( )

static

Get the list of registered ActionExtension.

The list contains unique elements (no duplicates possible) and is alphabitically sorted.

Note: The list is read-only and cannot be modified. This list is useful to loop over the loaded ActionExtension, especially when order counts.

Returns: list of unique ActionExtension loaded in the Core.

◆ getComponentExtension()

ComponentExtension * camitk::ExtensionManager::getComponentExtension ( QString extOrName )

static

get the plugin corresponding to a given extension or name.

References componentExtensionLessThan(), and getComponentExtensionMap().

Referenced by camitk::Application::open(), and camitk::Application::save().

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◆ getComponentExtensionMap()

QMap< QString, ComponentExtension * > & camitk::ExtensionManager::getComponentExtensionMap ( )

staticprivate

get the singleton map of loaded component plugins for files (the key is the file extension) This is the private (intern) method.

The component extension map is updated by loadComponentExtension, unloadComponentExtension and autoloadComponentExtensions. This method follows the "construct on first use" idiom/design-pattern. It therefore avoids the infamous "static initialization order fiasco", see http://www.parashift.com/c++-faq/ctors.html

Referenced by getComponentExtension(), and unloadActionExtension().

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◆ getComponentExtensionsList()

const QList< ComponentExtension * > camitk::ExtensionManager::getComponentExtensionsList ( )

static

Get the list of registered ComponentExtension.

The list contains unique elements (no duplicates possible) and is alphabitically sorted.

Note: The list is read-only and cannot be modified. This list is useful to loop over the loaded ComponentExtension, especially when order counts.

Returns: list of unique ComponentExtension loaded in the Core.

Referenced by main().

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◆ getDataDirectoryComponentExtension()

ComponentExtension * camitk::ExtensionManager::getDataDirectoryComponentExtension ( QString pluginName )

static

get the plugin corresponding to a given data directory component extension's name.

Referenced by camitk::Application::openDirectory().

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◆ getDataDirectoryComponentExtensionMap()

QMap< QString, ComponentExtension * > & camitk::ExtensionManager::getDataDirectoryComponentExtensionMap ( )

staticprivate

get the singleton map of loaded component plugins for data directory (the key is the name) This is the private (intern) method.

The data directory component extension map is updated by loadExtension, unloadExtension and autoloadExtensions. This method follows the "construct on first use" idiom/design-pattern. It therefore avoids the infamous "static initialization order fiasco", see http://www.parashift.com/c++-faq/ctors.html

◆ getDataDirectoryComponentsList()

const QList< ComponentExtension * > camitk::ExtensionManager::getDataDirectoryComponentsList ( )

static

Get the list of registered ComponentExtension working on directory.

The list contains unique elements (no duplicates possible) and is alphabitically sorted.

Note: The list is read-only and cannot be modified. This list is useful to loop over the loaded ComponentExtension, especially when order counts.

Returns: list of unique ComponentExtension working on data directory loaded in the Core.

◆ getDataDirectoryExtNames()

QStringList camitk::ExtensionManager::getDataDirectoryExtNames ( )

static

get the list of all the name of the registered Component data directory

◆ getExtensionFilter()

QStringList camitk::ExtensionManager::getExtensionFilter ( )

staticprivate

return the extensions file filter

◆ getFileExtensions()

QStringList camitk::ExtensionManager::getFileExtensions ( )

static

get the list of all the suffixes managed by registered component extensions (all possible file suffix)

Referenced by camitk::Application::Application().

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◆ getInstallationString()

QString camitk::ExtensionManager::getInstallationString	(	QString	file,
		const QString &	globalInstallDir,
		const QString &	userInstallDir,
		const QString &	currentWorkingDir
	)

static

Returns a three char string that corresponds to the installation directory of a given shared library.

The shared library should be the complete filename corresponding to a component or action extension.

The following string code are returned:

"[G]" for an extension installed in the global installation directory (where CamiTK SDK is installed)
"[L]" for an extension installed in the user configuration directory (local install)
"[W]" for an extension loaded directly from the current working directory (build installation tree)
"[U]" for an extension loaded manually by the user

Returns: the string coding for the installation

Parameters

file	the extension plugin file
globalInstallDir	the global installation directory
userInstallDir	the user installation directory
currentWorkingDir	the current working directory

◆ getPluginFileNames()

QStringList camitk::ExtensionManager::getPluginFileNames ( QDir extensionsDir )

staticprivate

return the list of shared objects in a directory considering debug/release on MSVC

Referenced by autoload().

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◆ getViewerExtension()

ViewerExtension * camitk::ExtensionManager::getViewerExtension ( QString file )

static

Get the Viewer Extension corresponding to the given shared library file.

If the given shared library is not loaded return nullptr. The shared library file should be given as a complete filepath in the QString.

Returns: nullptr if the given shared library complete path is not loaded.

◆ getViewerExtensionMap()

QMap< QString, ViewerExtension * > & camitk::ExtensionManager::getViewerExtensionMap ( )

staticprivate

get the singleton map of loaded viewer plugins (the key is the shared object/dll/dylib filename) This is the private (intern) method.

The viewer extension map is updated by loadViewerExtension, unloadViewerExtension and autoloadViewerExtensions. This method follows the "construct on first use" idiom/design-pattern. It therefore avoids the infamous "static initialization order fiasco", see http://www.parashift.com/c++-faq/ctors.html

Referenced by unloadAllActionExtensions(), and unloadAllViewerExtensions().

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◆ getViewerExtensionsList()

const QList< ViewerExtension * > camitk::ExtensionManager::getViewerExtensionsList ( )

static

Get the list of registered ViewerExtension.

The list contains unique elements (no duplicates possible) and is alphabitically sorted.

Note: The list is read-only and cannot be modified. This list is useful to loop over the loaded ViewerExtension, especially when order counts.

Returns: list of unique ViewerExtension loaded in the Core.

Referenced by camitk::Application::getNewViewer(), and camitk::Application::getViewerExtension().

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◆ initPrivateLibDirs()

void camitk::ExtensionManager::initPrivateLibDirs ( )

staticprivate

Add the private library directories (lib/camitk-version) in the current session PATH:

the current build library directory
the local installation library directory
the global installation library directory Note that we also add the actions and component private library subdirectories. Uses addLibraryPath(). Takes multiarch into account.

◆ loadExtension()

bool camitk::ExtensionManager::loadExtension	(	ExtensionManager::ExtensionType	type,
		QString	file
	)

static

Load a specific extension from a file.

This methods loads a ActionExtension, ComponentExtension,... plugin from a .dll/.so/.dylib filename

Parameters

type	the extension type
file	the plugin filename (.dll/.so/.dylib)

Returns: false if it cannot be loaded

Referenced by main().

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◆ registerFileExtension()

void camitk::ExtensionManager::registerFileExtension ( QString fileExtension )

static

Register the file extension with the current application for opening This function is called by registerFileExtensions.

Parameters

fileExtension the file extension to associate with the current application for opening

Referenced by camitk::Application::Application().

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◆ unloadActionExtension()

bool camitk::ExtensionManager::unloadActionExtension ( QString fileName )

static

Unload an action extension using its .dll/.so/.dylib filename.

Returns: false if the plugin could not be unloaded - still in use somewhere

References getComponentExtensionMap().

Referenced by getActionExtensionMap().

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◆ unloadAllActionExtensions()

void camitk::ExtensionManager::unloadAllActionExtensions ( )

static

unload all action extensions and delete instantiated actions

References getViewerExtensionMap(), and viewerExtensionLessThan().

Referenced by camitk::Application::quitting().

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◆ unloadAllViewerExtensions()

void camitk::ExtensionManager::unloadAllViewerExtensions ( )

static

unload all viewer extensions and delete instantiated actions

References getViewerExtensionMap(), and camitk::Application::unregisterAllViewers().

Referenced by camitk::Application::quitting().

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◆ unloadComponentExtension()

bool camitk::ExtensionManager::unloadComponentExtension ( QString extOrName )

static

Unload a plugin corresponding to a given extension or component name.

Returns: false if the plugin could not be unloaded - still in use somewhere

◆ unloadViewerExtension()

bool camitk::ExtensionManager::unloadViewerExtension ( QString fileName )

static

Unload an viewer extension using its .dll/.so/.dylib filename.

Returns: false if the plugin could not be unloaded - still in use somewhere

Referenced by getActionExtension().

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◆ viewerExtensionLessThan()

bool camitk::ExtensionManager::viewerExtensionLessThan	(	ViewerExtension *	left,
		ViewerExtension *	right
	)

staticprivate

Custom comparaison method between two ViewerExtension* based on the same principle as actionExtensionLessThan(..)

See also: actionExtensionLessThan(..) for more information

Referenced by unloadAllActionExtensions().

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The documentation for this class was generated from the following files:

Public Types

Static Public Member Functions

Static Private Member Functions

Detailed Description

Member Enumeration Documentation

◆ ExtensionType

Member Function Documentation

◆ actionExtensionLessThan()

◆ addLibraryPath()

◆ autoload() [1/2]

◆ autoload() [2/2]

◆ componentExtensionLessThan()

◆ getActionExtension()

◆ getActionExtensionMap()

◆ getActionExtensionsList()

◆ getComponentExtension()

◆ getComponentExtensionMap()

◆ getComponentExtensionsList()

◆ getDataDirectoryComponentExtension()

◆ getDataDirectoryComponentExtensionMap()

◆ getDataDirectoryComponentsList()

◆ getDataDirectoryExtNames()

◆ getExtensionFilter()

◆ getFileExtensions()

◆ getInstallationString()

◆ getPluginFileNames()

◆ getViewerExtension()

◆ getViewerExtensionMap()

◆ getViewerExtensionsList()

◆ initPrivateLibDirs()

◆ loadExtension()

◆ registerFileExtension()

◆ unloadActionExtension()

◆ unloadAllActionExtensions()

◆ unloadAllViewerExtensions()

◆ unloadComponentExtension()

◆ unloadViewerExtension()

◆ viewerExtensionLessThan()