EditPart Class Reference

#include <EditPart.hh>

Inheritance diagram for EditPart:

Collaboration diagram for EditPart:

Public Member Functions
	EditPart ()
virtual	~EditPart ()
void	putGarbage (std::set< EditPart * > &trashbag)
EditPart *	parent () const
void	setParent (EditPart *parent)
TTAMachine::MachinePart *	model () const
void	setModel (TTAMachine::MachinePart *model)
Figure *	figure () const
void	setFigure (Figure *figure)
EditPart *	find (wxPoint point)
EditPart *	find (const TTAMachine::MachinePart *model)
EditPart *	findNearest (wxPoint point, const EditPart *exclude=NULL)
int	findInRange (wxPoint point, float radius, std::vector< EditPart * > &found)
bool	hasEditPartRecursive (const EditPart *part) const
bool	selectable () const
bool	selected () const
void	setSelectable (bool selectable)
void	setSelected (bool select)
void	installEditPolicy (EditPolicy *editpolicy)
void	addChild (EditPart *child)
int	childCount () const
EditPart *	child (unsigned int index) const
ComponentCommand *	performRequest (Request *request) const
bool	canHandle (Request *request) const

Protected Attributes
EditPart *	parent_
	Parent of this EditPart. More...
Figure *	figure_
	Figure of this EditPart. More...
TTAMachine::MachinePart *	model_
	Machine component corresponding to this EditPart. More...
bool	selectable_
	Tells whether the EditPart is selectable or not. More...
bool	selected_
	Tells whether the EditPart is selected or not. More...
bool	garbageCollected_
	Helper member to prevent improper deletion. More...
std::vector< EditPolicy * >	editPolicies_
	List of supported EditPolicies. More...
std::vector< EditPart * >	children_
	List of children EditParts. More...

Private Member Functions
EditPart &	operator= (EditPart &old)
	Assignment not allowed. More...
	EditPart (EditPart &old)
	Copying not allowed. More...

Static Private Member Functions
static float	distance (wxPoint p, wxRect r)

Detailed Description

Connects a model object to a graphical object on the canvas.

An EditPart receives Requests generated by user actions and converts them to possible changes in the model (Commands) using its EditPolicies. EditParts can contain other EditParts as children. Every EditPart has a Figure.

Definition at line 60 of file EditPart.hh.

Constructor & Destructor Documentation

EditPart() [1/2]

EditPart::EditPart

(

)

The Constructor.

Definition at line 60 of file EditPart.cc.

                   :
                parent_(NULL), figure_(NULL), model_(NULL), selectable_(
                    false), selected_(false), garbageCollected_(false) {
}

~EditPart()

EditPart::~EditPart ( )

virtual

The Destructor.

Note

Do not destruct this object elsewhere than in the RootEditPart destructor! Children "garbage" should be collected before and EditPart is deleted.

Definition at line 72 of file EditPart.cc.

                    {
    assert(garbageCollected_);
    for (unsigned int i = 0; i < editPolicies_.size(); i++) {
        delete editPolicies_[i];
    }
    editPolicies_.clear();
    delete figure_;
}

References assert, editPolicies_, figure_, and garbageCollected_.

EditPart() [2/2]

EditPart::EditPart ( EditPart &  old )

private

Copying not allowed.

Member Function Documentation

addChild()

void EditPart::addChild

(

EditPart *

child

)

Adds an EditPart as a child.

Parameters

child

The new child to be added.

Definition at line 260 of file EditPart.cc.

                                  {
    if (child != NULL && !ContainerTools::containsValue(children_, child)) {
        assert(figure_ != NULL);
        figure_->addChild(child->figure());
        children_.push_back(child);
    }
}

References Figure::addChild(), assert, child(), children_, ContainerTools::containsValue(), figure(), and figure_.

Referenced by UnitPortFactory::addSocket(), MachineEditPartFactory::createBiDirBridge(), SegmentFactory::createEditPart(), BusFactory::createEditPart(), FUFactory::createEditPart(), IUFactory::createEditPart(), RFFactory::createEditPart(), GCUFactory::createEditPart(), MachineEditPartFactory::createEditPart(), MachineEditPartFactory::getBusChains(), MachineEditPartFactory::getSockets(), and MachineEditPartFactory::getUnits().

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canHandle()

bool EditPart::canHandle

(

Request *

request

)

const

Tells whether this EditPart can handle a certain type of Request.

Parameters

request

The Request to be asked if it can be handled.

Returns

true if an EditPolicy supporting the given Request is installed to this EditPart, false otherwise.

Definition at line 316 of file EditPart.cc.

                                          {
    vector<EditPolicy*>::const_iterator i = editPolicies_.begin();
    for (; i != editPolicies_.end(); i++) {
        if ((*i)->canHandle(request)) {
            return true;
        }
    }
    return false;
}

References editPolicies_.

Referenced by CopyComponentCmd::isEnabled(), CutComponentCmd::isEnabled(), DeleteComponentCmd::isEnabled(), ModifyComponentCmd::isEnabled(), ConnectTool::leftClick(), ProximMachineCanvasTool::onMouseEvent(), SelectTool::onMouseEvent(), ConnectTool::onMouseEvent(), ProximMachineStateWindow::onSimulationStop(), and ConnectTool::updateStatusline().

child()

EditPart* EditPart::child

(

unsigned int

index

)

const

Referenced by addChild(), DeleteBridgeCmd::Do(), and ModifyBridgeCmd::Do().

childCount()

int EditPart::childCount

(

)

const

Referenced by UnitPortFactory::createEditPart(), DeleteBridgeCmd::Do(), and ModifyBridgeCmd::Do().

distance()

float EditPart::distance ( wxPoint  p, wxRect  r  )

staticprivate

Calculates distance between a point and a rectangle.

Parameters

p	Position.
r	Rectangle.

Returns

Distance between point and rectangle. Zero if the point is in the rectangle.

Definition at line 335 of file EditPart.cc.

                                      {
    float xr = 0;
    float yr = 0;
    float xp = static_cast<float>(p.x);
    float yp = static_cast<float>(p.y);
 
    xr = static_cast<float>(max(min(p.x, r.GetRight()), r.GetLeft()));
    yr = static_cast<float>(max(min(p.y, r.GetBottom()), r.GetTop()));
 
    float dist = sqrt((xr - xp) * (xr - xp) + (yr - yp) * (yr - yp));
 
    return dist;
}

Referenced by findInRange(), and findNearest().

figure()

Figure* EditPart::figure

(

)

const

Referenced by addChild(), MachineCanvas::addMove(), MachineCanvas::clearHighlights(), ConnectTool::figure(), findNearest(), MachineCanvas::getFigureSize(), MachineCanvas::highlight(), SelectTool::leftClick(), MachineCanvas::OnDraw(), ConnectionEditPart::setSource(), ConnectionEditPart::setTarget(), and MachineCanvas::updateMachine().

find() [1/2]

EditPart * EditPart::find

(

const TTAMachine::MachinePart *

model

)

Finds an EditPart which corresponds given machine component.

Parameters

model

Machine component to find.

Returns

EditPart of the machine component, or NULL if the component was not found.

Definition at line 134 of file EditPart.cc.

                                                 {
 
    if (model == model_) {
        return this;
    }
 
    EditPart* found = NULL;
 
    // Check if the component is child of this edit part.
    for (unsigned int i = 0; i < children_.size(); i++) {
        found = children_[i]->find(model);
        if (found != NULL) {
            return found;
        }
    }
 
    return NULL;
}

References children_, model(), and model_.

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find() [2/2]

EditPart * EditPart::find

(

wxPoint

point

)

Finds an EditPart whose Figure is located in the given point.

Parameters

point

Point in which to find an EditPart.

Returns

EditPart whose Figure is located in point or NULL if none found.

Definition at line 102 of file EditPart.cc.

                            {
 
    EditPart* found = NULL;
 
    // first check if a child is in point
    for (unsigned int i = 0; i < children_.size(); i++) {
        found = children_[i]->find(point);
        if (found != NULL) {
            return found;
        }
    }
 
    // if no children were in located in the point, check self
#if wxCHECK_VERSION(2, 8, 0)
    if (selectable_ && figure_->virtualBounds().Contains(point)) {
#else
    if (selectable_ && figure_->virtualBounds().Inside(point)) {
#endif     
        return this;
    } else {
        return NULL;
    }
}

References children_, figure_, selectable_, and Figure::virtualBounds().

Referenced by MachineCanvas::findEditPart(), and MachineCanvas::highlight().

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findInRange()

int EditPart::findInRange	(	wxPoint	point,
		float	radius,
		std::vector< EditPart * > &	found
	)

Recursively looks for selectable EditParts including self that are in range around given coordinates.

Parameters

point	Position for the search.
radius	Search range.
found	Found EditParts are collected to this.

Returns

Number of found EditParts.

Definition at line 219 of file EditPart.cc.

                                 {
    int totalFound = 0;
 
    for (unsigned int i = 0; i < children_.size(); i++) {
        totalFound += children_[i]->findInRange(point, radius, found);
    }
 
    if (!selectable_) {
        return totalFound;
    }
 
    if (distance(point, figure_->virtualBounds()) < radius) {
        found.push_back(this);
        return totalFound + 1;
    }
    return totalFound;
}

References children_, distance(), figure_, selectable_, and Figure::virtualBounds().

Referenced by MachineCanvas::findEditPartsInRange().

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findNearest()

EditPart * EditPart::findNearest	(	wxPoint	point,
		const EditPart *	exclude = NULL
	)

Finds an EditPart whose Figure is nearest to the given point or first found EditPart whose figure contains the given point.

Parameters

point	Point in which to find the nearest EditPart.
exclude	An EditPart which is not included in the search.

Returns

EditPart if the search found one. Otherwise returns NULL.

Definition at line 162 of file EditPart.cc.

                                                            {
    EditPart* found = NULL;
    EditPart* lastFound = NULL;
    int lastDist = std::numeric_limits<int>::max();
 
    for (unsigned int i = 0; i < children_.size(); i++) {
        found = children_[i]->findNearest(point, exclude);
        if (found != NULL) {
            wxRect foundRect = found->figure()->virtualBounds();
 
#if wxCHECK_VERSION(2, 8, 0)
            if (foundRect.Contains(point)) {
#else
            if (foundRect.Inside(point)) {
#endif 
                assert(found->selectable());
                return found;
            }
 
            if (distance(point, foundRect) < lastDist) {
                lastFound = found;
                lastDist = distance(point, foundRect);
            }
        }
    }
 
    if (!selectable_ || this == exclude) {
        return lastFound;
    }
 
    // Check if this part's figure is closer to given point or
    // contains the point.
#if wxCHECK_VERSION(2, 8, 0)
    if(figure_->virtualBounds().Contains(point)) {
#else
    if (figure_->virtualBounds().Inside(point)) {
#endif  
        return this;
    } else {
        if (distance(point, figure_->virtualBounds()) < lastDist) {
            return this;
        } else {
            return lastFound;
        }
    }
}

References assert, children_, distance(), figure(), figure_, selectable(), selectable_, and Figure::virtualBounds().

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hasEditPartRecursive()

bool EditPart::hasEditPartRecursive

(

const EditPart *

part

)

const

Looks for given EditPart recursively.

Parameters

part	EditPart to look up.

Returns

True if tree has given EditPart.

Definition at line 274 of file EditPart.cc.

                                                         {
    if (part == this) {
        return true;
    }
 
    for (unsigned int i = 0; i < children_.size(); i++) {
        if (children_.at(i)->hasEditPartRecursive(part)) {
            return true;
        }
    }
    return false;
}

References children_.

Referenced by MachineCanvas::hasEditPart().

installEditPolicy()

void EditPart::installEditPolicy

(

EditPolicy *

editpolicy

)

Installs a new EditPolicy.

Parameters

editpolicy

The EditPolicy to be installed.

Note

Only one EditPolicy per Request type should be installed. If two or more EditPolicies are able to handle one type of Request, it is not defined, which EditPolicy will be chosen.

Definition at line 247 of file EditPart.cc.

                                                  {
    if (editpolicy->host() == NULL) {
        editpolicy->setHost(this);
    }
    editPolicies_.push_back(editpolicy);
}

References editPolicies_, EditPolicy::host(), and EditPolicy::setHost().

Referenced by MachineEditPartFactory::createBiDirBridge(), UnitPortFactory::createEditPart(), BusFactory::createEditPart(), GCUFactory::createEditPart(), RFFactory::createEditPart(), FUFactory::createEditPart(), IUFactory::createEditPart(), SegmentFactory::createEditPart(), BridgeFactory::createEditPart(), and SocketFactory::createEditPart().

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model()

TTAMachine::MachinePart* EditPart::model

(

)

const

Referenced by ProximPortEditPolicy::canHandle(), ProDePortEditPolicy::canHandle(), ProDeSocketEditPolicy::canHandle(), ProDeSegmentEditPolicy::canHandle(), MachineEditPartFactory::createBiDirBridge(), ProDeSegmentEditPolicy::createConnectCmd(), ProDePortEditPolicy::createConnectCmd(), ProDeSocketEditPolicy::createConnectCmd(), DeleteFUCmd::Do(), DeleteRFCmd::Do(), DeleteSocketCmd::Do(), DeleteBusCmd::Do(), DeleteGCUCmd::Do(), DeleteIUCmd::Do(), ModifyBusCmd::Do(), ModifyFUCmd::Do(), DeletePortCmd::Do(), ModifyGCUCmd::Do(), DeleteSegmentCmd::Do(), ModifyIUCmd::Do(), CopyComponent::Do(), ModifyRFCmd::Do(), ModifySocketCmd::Do(), ModifyFUPortCmd::Do(), ModifyIUPortCmd::Do(), ModifyRFPortCmd::Do(), DeleteBridgeCmd::Do(), ProximSetMachineWinStatusCmd::Do(), ModifySRPortCmd::Do(), ProximShowRegistersCmd::Do(), ProximShowPortsCmd::Do(), ModifyBridgeCmd::Do(), ConnectTool::figure(), find(), ProximSocketEditPolicy::getCommand(), ProximFUEditPolicy::getCommand(), ProximIUEditPolicy::getCommand(), ProximRFEditPolicy::getCommand(), ProximBusEditPolicy::getCommand(), ProximPortEditPolicy::getCommand(), ProDeSocketEditPolicy::getCommand(), ProDeSegmentEditPolicy::getCommand(), ProDeBusEditPolicy::getCommand(), ProDeFUEditPolicy::getCommand(), ProDePortEditPolicy::getCommand(), ProDeBridgeEditPolicy::getCommand(), ProDeIUEditPolicy::getCommand(), ProDeGCUEditPolicy::getCommand(), ProDeRFEditPolicy::getCommand(), ProximMachineStateWindow::onSimulationStop(), and MachineCanvas::select().

operator=()

EditPart& EditPart::operator= ( EditPart &  old )

private

Assignment not allowed.

parent()

EditPart* EditPart::parent

(

)

const

Referenced by ProDeSegmentEditPolicy::getCommand(), and MachineCanvas::select().

performRequest()

ComponentCommand * EditPart::performRequest

(

Request *

request

)

const

If an EditPolicy supporting the given Request is installed to this EditPart, a corresponding Command will be returned or NULL if no EditPolicies supporting the Request is found.

Parameters

request

The Request to be performed.

Returns

A command corresponding to the given Request, if an EditPolicy supporting it is installed, NULL otherwise.

Definition at line 297 of file EditPart.cc.

                                               {
    vector<EditPolicy*>::const_iterator i = editPolicies_.begin();
    for (; i != editPolicies_.end(); i++) {
        ComponentCommand* command = (*i)->getCommand(request);
        if (command != NULL) {
            return command;
        }
    }
    return NULL;
}

References editPolicies_.

Referenced by CopyComponentCmd::Do(), CutComponentCmd::Do(), DeleteComponentCmd::Do(), ModifyComponentCmd::Do(), ConnectTool::leftClick(), ProximMachineCanvasTool::onMouseEvent(), SelectTool::onMouseEvent(), ProximMachineStateWindow::onSimulationStop(), and ConnectTool::updateStatusline().

putGarbage()

void EditPart::putGarbage

(

std::set< EditPart * > &

trashbag

)

Puts all children and this EditPart to the trashbag.

Parameters

trashbag

The trashbag.

Definition at line 87 of file EditPart.cc.

                                                {
    for (unsigned i = 0; i < children_.size(); i++) {
        children_[i]->putGarbage(trashbag);
    }
    trashbag.insert(this);
    garbageCollected_ = true;
}

References children_, and garbageCollected_.

Referenced by RootEditPart::collectTrash().

selectable()

bool EditPart::selectable

(

)

const

Referenced by findNearest(), and SelectTool::leftClick().

selected()

bool EditPart::selected

(

)

const

setFigure()

void EditPart::setFigure

(

Figure *

figure

)

Referenced by MachineEditPartFactory::createBiDirBridge(), SocketPortConnFactory::createConnection(), SocketBusConnFactory::createConnection(), BridgeFactory::createEditPart(), GCUFactory::createEditPart(), UnitPortFactory::createEditPart(), RFFactory::createEditPart(), BusFactory::createEditPart(), IUFactory::createEditPart(), FUFactory::createEditPart(), SegmentFactory::createEditPart(), SocketFactory::createEditPart(), MachineEditPartFactory::createEditPart(), MachineEditPartFactory::getBusChains(), MachineEditPartFactory::getSockets(), and MachineEditPartFactory::getUnits().

setModel()

void EditPart::setModel

(

TTAMachine::MachinePart *

model

)

Referenced by MachineEditPartFactory::createBiDirBridge(), UnitPortFactory::createEditPart(), BusFactory::createEditPart(), SegmentFactory::createEditPart(), GCUFactory::createEditPart(), RFFactory::createEditPart(), FUFactory::createEditPart(), IUFactory::createEditPart(), BridgeFactory::createEditPart(), SocketFactory::createEditPart(), and ModifyBridgeCmd::Do().

setParent()

void EditPart::setParent

(

EditPart *

parent

)

Referenced by BusFactory::createEditPart().

setSelectable()

void EditPart::setSelectable

(

bool

selectable

)

Referenced by MachineEditPartFactory::createBiDirBridge(), UnitPortFactory::createEditPart(), BusFactory::createEditPart(), RFFactory::createEditPart(), FUFactory::createEditPart(), IUFactory::createEditPart(), GCUFactory::createEditPart(), BridgeFactory::createEditPart(), and SocketFactory::createEditPart().

setSelected()

void EditPart::setSelected

(

bool

select

)

Referenced by MachineCanvas::clearSelection(), and MachineCanvas::select().

Member Data Documentation

children_

std::vector<EditPart*> EditPart::children_

protected

List of children EditParts.

Definition at line 107 of file EditPart.hh.

Referenced by addChild(), find(), findInRange(), findNearest(), hasEditPartRecursive(), and putGarbage().

editPolicies_

std::vector<EditPolicy*> EditPart::editPolicies_

protected

List of supported EditPolicies.

Definition at line 105 of file EditPart.hh.

Referenced by canHandle(), installEditPolicy(), performRequest(), and ~EditPart().

figure_

Figure* EditPart::figure_

protected

Figure of this EditPart.

Definition at line 93 of file EditPart.hh.

Referenced by addChild(), find(), findInRange(), findNearest(), ConnectionEditPart::setSource(), ConnectionEditPart::setTarget(), and ~EditPart().

garbageCollected_

bool EditPart::garbageCollected_

protected

Helper member to prevent improper deletion.

Definition at line 102 of file EditPart.hh.

Referenced by RootEditPart::collectTrash(), putGarbage(), RootEditPart::setContents(), and ~EditPart().

model_

TTAMachine::MachinePart* EditPart::model_

protected

Machine component corresponding to this EditPart.

Definition at line 95 of file EditPart.hh.

Referenced by find().

parent_

EditPart* EditPart::parent_

protected

Parent of this EditPart.

Definition at line 91 of file EditPart.hh.

selectable_

bool EditPart::selectable_

protected

Tells whether the EditPart is selectable or not.

Definition at line 97 of file EditPart.hh.

Referenced by find(), findInRange(), and findNearest().

selected_

bool EditPart::selected_

protected

Tells whether the EditPart is selected or not.

Definition at line 99 of file EditPart.hh.

---

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

• EditPart.hh
• EditPart.cc