Gets informed about changes to a component's hierarchy or position. More...
Inherited by ComponentMovementWatcher, DropShadower, Label [private], MultiDocumentPanel [private], RelativeCoordinatePositionerBase, and Viewport [private].
Public Member Functions | |
| virtual | ~ComponentListener () |
| Destructor. | |
| virtual void | componentMovedOrResized (Component &component, bool wasMoved, bool wasResized) |
| Called when the component's position or size changes. | |
| virtual void | componentBroughtToFront (Component &component) |
| Called when the component is brought to the top of the z-order. | |
| virtual void | componentVisibilityChanged (Component &component) |
| Called when the component is made visible or invisible. | |
| virtual void | componentChildrenChanged (Component &component) |
| Called when the component has children added or removed. | |
| virtual void | componentParentHierarchyChanged (Component &component) |
| Called to indicate that the component's parents have changed. | |
| virtual void | componentNameChanged (Component &component) |
| Called when the component's name is changed. | |
| virtual void | componentBeingDeleted (Component &component) |
| Called when the component is in the process of being deleted. | |
Gets informed about changes to a component's hierarchy or position.
To monitor a component for changes, register a subclass of ComponentListener with the component using Component::addComponentListener().
Be sure to deregister listeners before you delete them!
| virtual ComponentListener::~ComponentListener | ( | ) | [virtual] |
Destructor.
| virtual void ComponentListener::componentMovedOrResized | ( | Component & | component, |
| bool | wasMoved, | ||
| bool | wasResized | ||
| ) | [virtual] |
Called when the component's position or size changes.
| component | the component that was moved or resized |
| wasMoved | true if the component's top-left corner has just moved |
| wasResized | true if the component's width or height has just changed |
Reimplemented in Label, ComponentMovementWatcher, Viewport, RelativeCoordinatePositionerBase, and DropShadower.
| virtual void ComponentListener::componentBroughtToFront | ( | Component & | component ) | [virtual] |
Called when the component is brought to the top of the z-order.
| component | the component that was moved |
Reimplemented in DropShadower.
| virtual void ComponentListener::componentVisibilityChanged | ( | Component & | component ) | [virtual] |
Called when the component is made visible or invisible.
| component | the component that changed |
Reimplemented in Label, ComponentMovementWatcher, and DropShadower.
| virtual void ComponentListener::componentChildrenChanged | ( | Component & | component ) | [virtual] |
Called when the component has children added or removed.
| component | the component whose children were changed |
Reimplemented in RelativeCoordinatePositionerBase.
| virtual void ComponentListener::componentParentHierarchyChanged | ( | Component & | component ) | [virtual] |
Called to indicate that the component's parents have changed.
When a component is added or removed from its parent, all of its children will produce this notification (recursively - so all children of its children will also be called as well).
| component | the component that this listener is registered with |
Reimplemented in Label, ComponentMovementWatcher, RelativeCoordinatePositionerBase, and DropShadower.
| virtual void ComponentListener::componentNameChanged | ( | Component & | component ) | [virtual] |
Called when the component's name is changed.
Reimplemented in MultiDocumentPanel.
| virtual void ComponentListener::componentBeingDeleted | ( | Component & | component ) | [virtual] |
Called when the component is in the process of being deleted.
This callback is made from inside the destructor, so be very, very cautious about what you do in here.
In particular, bear in mind that it's the Component base class's destructor that calls this - so if the object that's being deleted is a subclass of Component, then the subclass layers of the object will already have been destructed when it gets to this point!
Reimplemented in ComponentMovementWatcher, and RelativeCoordinatePositionerBase.
