OptionalScopedPointer< ObjectType > Class Template Reference
juce_core » memory

Holds a pointer to an object which can optionally be deleted when this pointer goes out of scope. More...

## Public Member Functions

| OptionalScopedPointer ()=default
| Creates an empty OptionalScopedPointer. More...
| OptionalScopedPointer (ObjectType *objectToHold, bool takeOwnership)
| Creates an OptionalScopedPointer to point to a given object, and specifying whether the OptionalScopedPointer will delete it. More...
| OptionalScopedPointer (OptionalScopedPointer &objectToTransferFrom)
| Takes ownership of the object that another OptionalScopedPointer holds. More...
OptionalScopedPointer & | operator= (OptionalScopedPointer &objectToTransferFrom)
| Takes ownership of the object that another OptionalScopedPointer holds. More...
| ~OptionalScopedPointer ()
| The destructor may or may not delete the object that is being held, depending on the takeOwnership flag that was specified when the object was first passed into an OptionalScopedPointer constructor. More...
| operator ObjectType * () const noexcept
| Returns the object that this pointer is managing. More...
ObjectType * | get () const noexcept
| Returns the object that this pointer is managing. More...
ObjectType & | operator* () const noexcept
| Returns the object that this pointer is managing. More...
ObjectType * | operator-> () const noexcept
| Lets you access methods and properties of the object that this pointer is holding. More...
ObjectType * | release () noexcept
| Removes the current object from this OptionalScopedPointer without deleting it. More...
void | reset ()
| Resets this pointer to null, possibly deleting the object that it holds, if it has ownership of it. More...
void | clear ()
| Does the same thing as reset(). More...
void | set (ObjectType *newObject, bool takeOwnership)
| Makes this OptionalScopedPointer point at a new object, specifying whether the OptionalScopedPointer will take ownership of the object. More...
void | setOwned (ObjectType *newObject)
| Makes this OptionalScopedPointer point at a new object, and take ownership of that object. More...
void | setNonOwned (ObjectType *newObject)
| Makes this OptionalScopedPointer point at a new object, but will not take ownership of that object. More...
bool | willDeleteObject () const noexcept
| Returns true if the target object will be deleted when this pointer object is deleted. More...
void | swapWith (OptionalScopedPointer< ObjectType > &other) noexcept
| Swaps this object with another OptionalScopedPointer. More...

## Detailed Description

### template<class ObjectType>
class OptionalScopedPointer< ObjectType >

Holds a pointer to an object which can optionally be deleted when this pointer goes out of scope.

This acts in many ways like a std::unique_ptr, but allows you to specify whether or not the object is deleted.

## Constructor & Destructor Documentation

## OptionalScopedPointer() [1/3]

template<class ObjectType>

OptionalScopedPointer< ObjectType >::OptionalScopedPointer | ( |  | ) |

default

Creates an empty OptionalScopedPointer.

## OptionalScopedPointer() [2/3]

template<class ObjectType>

OptionalScopedPointer< ObjectType >::OptionalScopedPointer | ( | ObjectType * | objectToHold,
|  | bool | takeOwnership
| ) |  |

Creates an OptionalScopedPointer to point to a given object, and specifying whether the OptionalScopedPointer will delete it.

If takeOwnership is true, then the OptionalScopedPointer will act like a std::unique_ptr, deleting the object when it is itself deleted. If this parameter is false, then the OptionalScopedPointer just holds a normal pointer to the object, and won't delete it.

## OptionalScopedPointer() [3/3]

template<class ObjectType>

OptionalScopedPointer< ObjectType >::OptionalScopedPointer | ( | OptionalScopedPointer< ObjectType > & | objectToTransferFrom | ) |

Takes ownership of the object that another OptionalScopedPointer holds.

Like a normal std::unique_ptr, the objectToTransferFrom object will become null, as ownership of the managed object is transferred to this object.

The flag to indicate whether or not to delete the managed object is also copied from the source object.

## ~OptionalScopedPointer()

template<class ObjectType>

OptionalScopedPointer< ObjectType >::~OptionalScopedPointer | ( |  | ) |

The destructor may or may not delete the object that is being held, depending on the takeOwnership flag that was specified when the object was first passed into an OptionalScopedPointer constructor.

## Member Function Documentation

## operator=()

template<class ObjectType>

OptionalScopedPointer& OptionalScopedPointer< ObjectType >::operator= | ( | OptionalScopedPointer< ObjectType > & | objectToTransferFrom | ) |

Takes ownership of the object that another OptionalScopedPointer holds.

Like a normal std::unique_ptr, the objectToTransferFrom object will become null, as ownership of the managed object is transferred to this object.

The ownership flag that says whether or not to delete the managed object is also copied from the source object.

## operator ObjectType *()

template<class ObjectType>

OptionalScopedPointer< ObjectType >::operator ObjectType * | ( |  | ) | const

noexcept

Returns the object that this pointer is managing.

## get()

template<class ObjectType>

ObjectType* OptionalScopedPointer< ObjectType >::get | ( |  | ) | const

noexcept

Returns the object that this pointer is managing.

Referenced by SidePanel::getContent(), SidePanel::getTitleBarComponent(), and OptionalScopedPointer< OutputStream >::set().

## operator*()

template<class ObjectType>

ObjectType& OptionalScopedPointer< ObjectType >::operator* | ( |  | ) | const

noexcept

Returns the object that this pointer is managing.

## operator->()

template<class ObjectType>

ObjectType* OptionalScopedPointer< ObjectType >::operator-> | ( |  | ) | const

noexcept

Lets you access methods and properties of the object that this pointer is holding.

## release()

template<class ObjectType>

ObjectType* OptionalScopedPointer< ObjectType >::release | ( |  | ) |

noexcept

Removes the current object from this OptionalScopedPointer without deleting it.

This will return the current object, and set this OptionalScopedPointer to a null pointer.

## reset()

template<class ObjectType>

void OptionalScopedPointer< ObjectType >::reset | ( |  | ) |

Resets this pointer to null, possibly deleting the object that it holds, if it has ownership of it.

Referenced by OptionalScopedPointer< OutputStream >::clear(), OptionalScopedPointer< OutputStream >::operator=(), OptionalScopedPointer< OutputStream >::set(), and OptionalScopedPointer< OutputStream >::~OptionalScopedPointer().

## clear()

template<class ObjectType>

void OptionalScopedPointer< ObjectType >::clear | ( |  | ) |

Does the same thing as reset().

## set()

template<class ObjectType>

void OptionalScopedPointer< ObjectType >::set | ( | ObjectType * | newObject,
|  | bool | takeOwnership
| ) |  |

Makes this OptionalScopedPointer point at a new object, specifying whether the OptionalScopedPointer will take ownership of the object.

If takeOwnership is true, then the OptionalScopedPointer will act like a std::unique_ptr, deleting the object when it is itself deleted. If this parameter is false, then the OptionalScopedPointer just holds a normal pointer to the object, and won't delete it.

Referenced by OptionalScopedPointer< OutputStream >::setNonOwned(), and OptionalScopedPointer< OutputStream >::setOwned().

## setOwned()

template<class ObjectType>

void OptionalScopedPointer< ObjectType >::setOwned | ( | ObjectType * | newObject | ) |

Makes this OptionalScopedPointer point at a new object, and take ownership of that object.

Referenced by StandalonePluginHolder::showAudioSettingsDialog().

## setNonOwned()

template<class ObjectType>

void OptionalScopedPointer< ObjectType >::setNonOwned | ( | ObjectType * | newObject | ) |

Makes this OptionalScopedPointer point at a new object, but will not take ownership of that object.

## willDeleteObject()

template<class ObjectType>

bool OptionalScopedPointer< ObjectType >::willDeleteObject | ( |  | ) | const

noexcept

Returns true if the target object will be deleted when this pointer object is deleted.

## swapWith()

template<class ObjectType>

void OptionalScopedPointer< ObjectType >::swapWith | ( | OptionalScopedPointer< ObjectType > & | other | ) |

noexcept

Swaps this object with another OptionalScopedPointer.

The two objects simply exchange their states.

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

- juce_OptionalScopedPointer.h