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java.lang.Objectorg.eclipse.core.databinding.observable.AbstractObservable
org.eclipse.core.databinding.observable.value.AbstractObservableValue
org.eclipse.core.databinding.observable.value.ComputedValue
org.eclipse.core.databinding.AggregateValidationStatus
public final class AggregateValidationStatus
This class can be used to aggregate status values from a data binding context
into a single status value. Instances of this class can be used as an
observable value with a value type of IStatus
, or the static methods
can be called directly if an aggregated status result is only needed once.
Field Summary | |
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static int |
MAX_SEVERITY
Constant denoting an aggregation strategy that always returns the most severe status from the given validation status providers. |
static int |
MERGED
Constant denoting an aggregation strategy that merges multiple non-OK status objects in a MultiStatus . |
Constructor Summary | |
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AggregateValidationStatus(DataBindingContext dbc,
int strategy)
Creates a new aggregate validation status observable for the given data binding context. |
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AggregateValidationStatus(IObservableCollection validationStatusProviders,
int strategy)
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AggregateValidationStatus(Realm realm,
IObservableCollection validationStatusProviders,
int strategy)
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Method Summary | |
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protected void |
addListener(Object listenerType,
IObservablesListener listener)
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protected Object |
calculate()
Subclasses must override this method to provide the object's value. |
protected Object |
clone()
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protected void |
fireEvent(ObservableEvent event)
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protected void |
firstListenerAdded()
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Realm |
getRealm()
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static IStatus |
getStatusMaxSeverity(Collection validationStatusProviders)
Returns a status that always returns the most severe status from the given validation status providers. |
static IStatus |
getStatusMerged(Collection validationStatusProviders)
Returns a status object that merges multiple non-OK status objects in a MultiStatus . |
protected void |
lastListenerRemoved()
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protected void |
removeListener(Object listenerType,
IObservablesListener listener)
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Methods inherited from class org.eclipse.core.databinding.observable.value.ComputedValue |
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addChangeListener, addValueChangeListener, dispose, doGetValue, getValueType, hasListeners, isStale, makeDirty |
Methods inherited from class org.eclipse.core.databinding.observable.value.AbstractObservableValue |
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doSetValue, fireChange, fireValueChange, getValue, removeValueChangeListener, setValue |
Methods inherited from class org.eclipse.core.databinding.observable.AbstractObservable |
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addDisposeListener, addStaleListener, checkRealm, fireStale, isDisposed, removeChangeListener, removeDisposeListener, removeStaleListener |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.eclipse.core.databinding.observable.IObservable |
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addDisposeListener, addStaleListener, getRealm, isDisposed, removeChangeListener, removeDisposeListener, removeStaleListener |
Field Detail |
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public static final int MERGED
MultiStatus
. Returns an OK status result if
all statuses from the given validation status providers are the an OK
status. Returns a single status if there is only one non-OK status.
getStatusMerged(Collection)
,
Constant Field Valuespublic static final int MAX_SEVERITY
getStatusMaxSeverity(Collection)
,
Constant Field ValuesConstructor Detail |
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public AggregateValidationStatus(DataBindingContext dbc, int strategy)
dbc
- a data binding contextstrategy
- a strategy constant, one of MERGED
or
MAX_SEVERITY
.public AggregateValidationStatus(IObservableCollection validationStatusProviders, int strategy)
validationStatusProviders
- an observable collection containing elements of type
ValidationStatusProvider
strategy
- a strategy constant, one of MERGED
or
MAX_SEVERITY
.DataBindingContext.getValidationStatusProviders()
public AggregateValidationStatus(Realm realm, IObservableCollection validationStatusProviders, int strategy)
realm
- RealmvalidationStatusProviders
- an observable collection containing elements of type
ValidationStatusProvider
strategy
- a strategy constant, one of MERGED
or
MAX_SEVERITY
.DataBindingContext.getValidationStatusProviders()
Method Detail |
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protected Object calculate()
ComputedValue
IObservable
, and
implementers must use one of the interface methods tagged TrackedGetter
for ComputedValue to recognize it as a dependency.
calculate
in class ComputedValue
public static IStatus getStatusMerged(Collection validationStatusProviders)
MultiStatus
. Returns an OK status result if all statuses from the
given validation status providers are the an OK status. Returns a single
status if there is only one non-OK status.
validationStatusProviders
- a collection of validation status providers
public static IStatus getStatusMaxSeverity(Collection validationStatusProviders)
validationStatusProviders
- a collection of validation status providers
protected void addListener(Object listenerType, IObservablesListener listener)
listenerType
- listener
- protected void removeListener(Object listenerType, IObservablesListener listener)
listenerType
- listener
- protected void fireEvent(ObservableEvent event)
protected void firstListenerAdded()
protected void lastListenerRemoved()
public Realm getRealm()
protected Object clone() throws CloneNotSupportedException
clone
in class Object
CloneNotSupportedException
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