Module com.googlecode.lanterna
Package com.googlecode.lanterna.gui2
Class AbstractComposite<T extends Container>
java.lang.Object
com.googlecode.lanterna.gui2.AbstractComponent<T>
com.googlecode.lanterna.gui2.AbstractComposite<T>
- Type Parameters:
T
- Should always be itself, seeAbstractComponent
- All Implemented Interfaces:
Component
,Composite
,Container
,TextGUIElement
- Direct Known Subclasses:
AbstractBasePane.ContentHolder
,AbstractBorder
public abstract class AbstractComposite<T extends Container>
extends AbstractComponent<T>
implements Composite, Container
This abstract implementation contains common code for the different
Composite
implementations. A
Composite
component is one that encapsulates a single component, like borders. Because of this, a
Composite
can be seen as a special case of a Container
and indeed this abstract class does in fact
implement the Container
interface as well, to make the composites easier to work with internally.-
Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionboolean
containsComponent
(Component component) Returnstrue
if this container contains the supplied component either directly or indirectly through intermediate containers.int
Returns the number of children this container currently hasReturns collection that is to be considered a copy of the list of children contained inside of this object.Returns list that is to be considered a copy of the list of children inside of this container.Returns the component that this Composite is wrappingboolean
handleInput
(KeyStroke key) If an interactable component inside this container received a keyboard event that wasn't handled, the GUI system will recursively send the event to each parent container to give each of them a chance to consume the event.void
Marks the component as invalid and requiring to be re-drawn at next opportunity.boolean
Checks if this element (or any of its child components, if any) has signaled that what it's currently displaying is out of date and needs re-drawing.nextFocus
(Interactable fromThis) Given an interactable, find the next one in line to receive focus.previousFocus
(Interactable fromThis) Given an interactable, find the previous one in line to receive focus.boolean
removeComponent
(Component component) Removes the component from the container.void
setComponent
(Component component) Sets the component which is inside this Composite.void
updateLookupMap
(InteractableLookupMap interactableLookupMap) Takes a lookup map and updates it with information about where all the interactables inside of this container are located.Methods inherited from class com.googlecode.lanterna.gui2.AbstractComponent
addTo, calculatePreferredSize, createDefaultRenderer, draw, getBasePane, getGlobalPosition, getLayoutData, getParent, getPosition, getPreferredSize, getRenderer, getSize, getTextGUI, getTheme, getThemeDefinition, hasParent, isInside, isVisible, onAdded, onAfterDrawing, onBeforeDrawing, onRemoved, runOnGUIThreadIfExistsOtherwiseRunDirect, self, setLayoutData, setPosition, setPreferredSize, setRenderer, setSize, setTheme, setVisible, toBasePane, toGlobal, withBorder
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface com.googlecode.lanterna.gui2.Component
addTo, getBasePane, getGlobalPosition, getLayoutData, getParent, getPosition, getPreferredSize, getRenderer, getSize, getTextGUI, getTheme, getThemeDefinition, hasParent, isInside, isVisible, onAdded, onRemoved, setLayoutData, setPosition, setPreferredSize, setSize, setTheme, setVisible, toBasePane, toGlobal, withBorder
Methods inherited from interface com.googlecode.lanterna.gui2.TextGUIElement
draw
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Field Details
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component
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Constructor Details
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AbstractComposite
public AbstractComposite()Default constructor
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Method Details
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setComponent
Description copied from interface:Composite
Sets the component which is inside this Composite. If you call this method with null, it removes the component wrapped by this Composite.- Specified by:
setComponent
in interfaceComposite
- Parameters:
component
- Component to wrap
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getComponent
Description copied from interface:Composite
Returns the component that this Composite is wrapping- Specified by:
getComponent
in interfaceComposite
- Returns:
- Component the composite is wrapping
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getChildCount
public int getChildCount()Description copied from interface:Container
Returns the number of children this container currently has- Specified by:
getChildCount
in interfaceContainer
- Returns:
- Number of children currently in this container
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getChildrenList
Description copied from interface:Container
Returns list that is to be considered a copy of the list of children inside of this container. Modifying this list will not affect any internal state. This method is essentially the same as getChildren but the returned collection is a list.- Specified by:
getChildrenList
in interfaceContainer
- Returns:
- Child-components inside of this Container
- See Also:
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getChildren
Description copied from interface:Container
Returns collection that is to be considered a copy of the list of children contained inside of this object. Modifying this collection will not affect any internal state.This method isn't deprecated but it should have originally been defined as returning a List instead of a Collection. See
getChildrenList
for a method with this signature.- Specified by:
getChildren
in interfaceContainer
- Returns:
- Child-components inside of this Container
- See Also:
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containsComponent
Description copied from interface:Container
Returnstrue
if this container contains the supplied component either directly or indirectly through intermediate containers.- Specified by:
containsComponent
in interfaceContainer
- Parameters:
component
- Component to check if it's part of this container- Returns:
true
if the component is inside this Container, otherwisefalse
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removeComponent
Description copied from interface:Container
Removes the component from the container. This should remove the component from the Container's internal data structure as well as call the onRemoved(..) method on the component itself if it was found inside the container.- Specified by:
removeComponent
in interfaceContainer
- Parameters:
component
- Component to remove from the Container- Returns:
true
if the component existed inside the container and was removed,false
otherwise
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isInvalid
public boolean isInvalid()Description copied from interface:TextGUIElement
Checks if this element (or any of its child components, if any) has signaled that what it's currently displaying is out of date and needs re-drawing.- Specified by:
isInvalid
in interfaceTextGUIElement
- Overrides:
isInvalid
in classAbstractComponent<T extends Container>
- Returns:
true
if the component is invalid and needs redrawing,false
otherwise
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invalidate
public void invalidate()Description copied from interface:Component
Marks the component as invalid and requiring to be re-drawn at next opportunity. Container components should take this as a hint to layout the child components again.- Specified by:
invalidate
in interfaceComponent
- Overrides:
invalidate
in classAbstractComponent<T extends Container>
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nextFocus
Description copied from interface:Container
Given an interactable, find the next one in line to receive focus. If the interactable isn't inside this container, this method should returnnull
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previousFocus
Description copied from interface:Container
Given an interactable, find the previous one in line to receive focus. If the interactable isn't inside this container, this method should returnnull
.- Specified by:
previousFocus
in interfaceContainer
- Parameters:
fromThis
- Component from which to get the previous interactable, or if null, pick the last interactable in the list- Returns:
- The previous interactable component, or null if there are no more interactables in the list
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handleInput
Description copied from interface:Container
If an interactable component inside this container received a keyboard event that wasn't handled, the GUI system will recursively send the event to each parent container to give each of them a chance to consume the event. Returnfalse
if the implementer doesn't care about this particular keystroke and it will be automatically sent up the hierarchy the to next container. If you returntrue
, the event will stop here and won't be reported as unhandled.- Specified by:
handleInput
in interfaceContainer
- Parameters:
key
- Keystroke that was ignored by the interactable inside this container- Returns:
true
if this event was handled by this container and shouldn't be processed anymore,false
if the container didn't take any action on the event and want to pass it on
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updateLookupMap
Description copied from interface:Container
Takes a lookup map and updates it with information about where all the interactables inside of this container are located.- Specified by:
updateLookupMap
in interfaceContainer
- Parameters:
interactableLookupMap
- Interactable map to update
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