tlp::Interactor Class Reference

#include <Interactor.h>

Inheritance diagram for tlp::Interactor:

Collaboration diagram for tlp::Interactor:

Public Slots
virtual void	install (QObject *target)=0
virtual void	setView (tlp::View *)=0
virtual bool	showContextMenu (const QPoint &, const QPointF &)
virtual void	undoIsDone ()=0
virtual void	uninstall ()=0

Public Member Functions
virtual QAction *	action () const =0
std::string	category () const override
virtual QLabel *	configurationDocWidget () const
virtual QWidget *	configurationOptionsWidget () const
virtual void	construct ()=0
virtual QCursor	cursor () const =0
std::string	icon () const override
virtual bool	isCompatible (const std::string &viewName) const =0
virtual unsigned int	priority () const =0
virtual tlp::View *	view () const =0
Public Member Functions inherited from tlp::Plugin
virtual std::string	author () const =0
virtual std::string	date () const =0
void	declareDeprecatedName (const std::string &oldName)
std::string	deprecatedName ()
virtual std::string	group () const =0
virtual int	id () const
virtual std::string	info () const =0
virtual std::string	major () const
virtual std::string	minor () const
virtual std::string	name () const =0
virtual std::string	programmingLanguage () const
virtual std::string	release () const =0
virtual std::string	tulipMajor () const
virtual std::string	tulipMinor () const
virtual std::string	tulipRelease () const =0

Static Public Member Functions
static void	setupConfigWidget (QWidget *)

Protected Member Functions
bool	eventFilter (QObject *obj, QEvent *ev) override

Properties
QAction *	action
QCursor	cursor
unsigned int	priority

Additional Inherited Members
Protected Attributes inherited from tlp::Plugin
std::string	oldName

Detailed Description

Interactor provides a way to handle user inputs over a view. Basically, The interactor class is an overlay to the Qt's event filtering mechanism. It adds several features like the ability to define priorities, custom cursors, etc.

When an interactor is constructed, the following methods are called in this order:

• The constructor. This method should almost be a no-op. Interactors may be instantiated by the plugin manager system and doing unneeded operations in the constructor may lead to poor performances when the application loads up.
• isCompatible. When creating a View, the application will check for all interactors to see if they could be installed on it. This is done using the isCompatible method.
• construct. Initialize the interactor. Since the constructor should be a no-op, initialization code should be put here.
• setView. Defines the view this interactor is bound to. The Interactor may keep a reference to the view object to perform specific operations on user inputs.

Methods listed above are only called once. Once the interactor is initialized, it may be installed/removed several times on different QObjects. It will then repond to user inputs via the eventFilter method

See also

QObject::eventFilter()

Definition at line 62 of file Interactor.h.

Member Function Documentation

action()

virtual QAction* tlp::Interactor::action ( ) const

pure virtual

Returns

a QAction associated to this interactor. This is used by the overleying system to associate an icon/text to the interactor.

Warning

The parent (QObject::parent()) object of this QAction MUST BE the Interactor.

Implemented in tlp::InteractorComposite.

category()

std::string tlp::Interactor::category ( ) const

inlineoverridevirtual

A string identifier for a plugin used for categorization purposes.

Returns

std::string the category of the plugin.

Implements tlp::Plugin.

Definition at line 69 of file Interactor.h.

configurationDocWidget()

virtual QLabel* tlp::Interactor::configurationDocWidget ( ) const

inlinevirtual

Returns

The interactor documentation.

Warning

This method MUST ALWAYS return the same pointer. Doing otherwise may lead to memory leaks.

Note

The interactor document has to be instantiated from the construct method.

It is up to the interactor developer to delete the returned pointer.

Reimplemented in tlp::NodeLinkDiagramComponentInteractor.

Definition at line 90 of file Interactor.h.

configurationOptionsWidget()

virtual QWidget* tlp::Interactor::configurationOptionsWidget ( ) const

inlinevirtual

Returns

the configuration options widget used to set up the interactor.

Warning

This method MUST ALWAYS return the same pointer. Doing otherwise may lead to memory leaks.

Note

The configuration widget has to be instantiated from the construct method.

It is up to the interactor developer to delete the configuration widget

Definition at line 101 of file Interactor.h.

construct()

virtual void tlp::Interactor::construct ( )

pure virtual

Builds up the interactor's internal state. This method should be used instead of the constructor to initialize the interactor.

cursor()

virtual QCursor tlp::Interactor::cursor ( ) const

pure virtual

Returns

The cursor associated to this interactor. When the interactor gets active on a view, the View's cursor is changed to what this method returns.

Implemented in tlp::InteractorComposite.

eventFilter()

bool tlp::Interactor::eventFilter ( QObject *  obj, QEvent *  ev  )

inlineoverrideprotected

Provides input filtering for the interactor.

See also

QObject::eventFilter()

Definition at line 187 of file Interactor.h.

icon()

std::string tlp::Interactor::icon ( ) const

inlineoverridevirtual

The icon (preferably a thumbnail) of the plugin.

Returns

std::string the icon path

Reimplemented from tlp::Plugin.

Definition at line 72 of file Interactor.h.

install

virtual void tlp::Interactor::install ( QObject *  target )

pure virtualslot

Install the interactor on the given target A call to this method means that the interactor should start listening to the target's events and handle them. Returning true prevents further handling of the event. Doing otherwise means that the interactor will let following filters to hand over this kind of event.

isCompatible()

virtual bool tlp::Interactor::isCompatible ( const std::string &  viewName ) const

pure virtual

Checks the compatibility between the interactor and the given view (identified by its name). If this method returns true, it's very likely that the interactor will be installed on the associated view.

priority()

virtual unsigned int tlp::Interactor::priority ( ) const

pure virtual

Returns

the interactor's priority. Priority defines how interactors gets ordered when displayed in the View's toolbar. Interactors with the top-most priority value will be displayed at the beginning of the list while lowest priority will be position at the end.

Implemented in tlp::NodeLinkDiagramComponentInteractor.

setupConfigWidget()

static void tlp::Interactor::setupConfigWidget ( QWidget *  )

static

this method should be called before setting up the ui of an interactor config widget

setView

virtual void tlp::Interactor::setView ( tlp::View *  )

pure virtualslot

Defines the view object associated to this interactor.

Warning

The view() method MUST ALWAYS return the same pointer as the one passed down to this method.

showContextMenu

virtual bool tlp::Interactor::showContextMenu ( const QPoint &  , const QPointF &    )

inlinevirtualslot

This method is called whenever the context menu is required on the view.

Parameters

point

The screen coordinates where the context menu should be displayed.

Returns

true or false whether the context menu has been shown or not

Reimplemented in tlp::InteractorComposite.

Definition at line 158 of file Interactor.h.

undoIsDone

virtual void tlp::Interactor::undoIsDone ( )

pure virtualslot

Informs the interactor when the undo command (Ctrl+Z) has been triggered.

uninstall

virtual void tlp::Interactor::uninstall ( )

pure virtualslot

Removes the interactor from the previously set target. Interactors can be installed on only one target at once.

view()

virtual tlp::View* tlp::Interactor::view ( ) const

pure virtual

Returns

the View object associated to this Interactor.

Warning

The returned object MUST be the same as the one passed down to the setView method.

Implemented in tlp::InteractorComposite.