Package org.eclipse.jface.commands
Class PersistentState
java.lang.Object
org.eclipse.core.commands.common.EventManager
org.eclipse.core.commands.State
org.eclipse.jface.commands.PersistentState
- Direct Known Subclasses:
RadioState,TextState,ToggleState
This is a state that can be made persistent. A state is persisted to a preference store.
Clients may extend this class.
- Since:
- 3.2
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionabstract voidload(IPreferenceStore store, String preferenceKey) Loads this state from the preference store, given the location at which to look.abstract voidsave(IPreferenceStore store, String preferenceKey) Saves this state to the preference store, given the location at which to write.voidsetShouldPersist(boolean persisted) Sets whether this state should be persisted.booleanWhether this state should be persisted.Methods inherited from class org.eclipse.core.commands.State
addListener, dispose, fireStateChanged, getId, getValue, removeListener, setId, setValueMethods inherited from class org.eclipse.core.commands.common.EventManager
addListenerObject, clearListeners, getListeners, isListenerAttached, removeListenerObject
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Constructor Details
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PersistentState
public PersistentState()
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Method Details
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load
Loads this state from the preference store, given the location at which to look. This method must be symmetric with a call tosave(IPreferenceStore, String).- Parameters:
store- The store from which to read; must not benull.preferenceKey- The key at which the state is stored; must not benull.
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save
Saves this state to the preference store, given the location at which to write. This method must be symmetric with a call toload(IPreferenceStore, String).- Parameters:
store- The store to which the state should be written; must not benull.preferenceKey- The key at which the state should be stored; must not benull.
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setShouldPersist
public void setShouldPersist(boolean persisted) Sets whether this state should be persisted.- Parameters:
persisted- Whether this state should be persisted.
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shouldPersist
public boolean shouldPersist()Whether this state should be persisted. Subclasses should check this method before loading or saving.- Returns:
trueif this state should be persisted;falseotherwise.
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