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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE 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 General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
#ifndef JUCE_RELATIVECOORDINATEPOSITIONER_H_INCLUDED
#define JUCE_RELATIVECOORDINATEPOSITIONER_H_INCLUDED
//==============================================================================
/**
Base class for Component::Positioners that are based upon relative coordinates.
*/
class JUCE_API RelativeCoordinatePositionerBase : public Component::Positioner,
public ComponentListener,
public MarkerList::Listener
{
public:
RelativeCoordinatePositionerBase (Component& component);
~RelativeCoordinatePositionerBase();
void componentMovedOrResized (Component&, bool, bool);
void componentParentHierarchyChanged (Component&);
void componentChildrenChanged (Component& component);
void componentBeingDeleted (Component& component);
void markersChanged (MarkerList*);
void markerListBeingDeleted (MarkerList* markerList);
void apply();
bool addCoordinate (const RelativeCoordinate& coord);
bool addPoint (const RelativePoint& point);
//==============================================================================
/** Used for resolving a RelativeCoordinate expression in the context of a component. */
class ComponentScope : public Expression::Scope
{
public:
ComponentScope (Component& component);
Expression getSymbolValue (const String& symbol) const;
void visitRelativeScope (const String& scopeName, Visitor& visitor) const;
String getScopeUID() const;
protected:
Component& component;
Component* findSiblingComponent (const String& componentID) const;
private:
JUCE_DECLARE_NON_COPYABLE (ComponentScope)
};
protected:
virtual bool registerCoordinates() = 0;
virtual void applyToComponentBounds() = 0;
private:
class DependencyFinderScope;
friend class DependencyFinderScope;
Array <Component*> sourceComponents;
Array <MarkerList*> sourceMarkerLists;
bool registeredOk;
void registerComponentListener (Component& comp);
void registerMarkerListListener (MarkerList* const list);
void unregisterListeners();
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (RelativeCoordinatePositionerBase)
};
#endif // JUCE_RELATIVECOORDINATEPOSITIONER_H_INCLUDED
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