public interface IElementDeltaExtension extends IElementDelta
IElementDelta
with a number of default methods.
This interface is not intended to be referenced for purposes other than extension.
Modifier and Type | Method and Description |
---|---|
default IElementDelta[] |
getAddedChildren()
Returns element deltas for the immediate children that have been added.
|
default IElementDelta[] |
getAffectedChildren()
Returns element deltas for all affected (added, removed, or changed)
immediate children.
|
default IElementDelta[] |
getChangedChildren()
Returns element deltas for the immediate children that have been changed.
|
default IElement |
getElement()
Returns the element that this delta describes a change to.
|
default long |
getFlags()
Returns flags which describe in more detail how an element has changed.
|
default int |
getKind()
Returns the kind of this element delta.
|
default org.eclipse.core.resources.IMarkerDelta[] |
getMarkerDeltas()
Returns the changes to markers on the corresponding resource of this
delta's element.
|
default IElement |
getMovedFromElement()
Returns an element describing this delta's element before it was moved
to its current location, or
null if the F_MOVED_FROM change flag is not set. |
default IElement |
getMovedToElement()
Returns an element describing this delta's element in its new location,
or
null if the F_MOVED_TO change flag is not set. |
default IElementDelta[] |
getRemovedChildren()
Returns element deltas for the immediate children that have been removed.
|
default org.eclipse.core.resources.IResourceDelta[] |
getResourceDeltas()
Returns the changes to children of the element's corresponding resource
that cannot be described in terms of element deltas.
|
default boolean |
isEmpty()
Returns whether this element delta is empty,
i.e., represents an unchanged element.
|
default IElement getElement()
null
)default boolean isEmpty()
true
if this delta is empty,
and false
otherwisedefault int getKind()
ADDED
,
REMOVED
,
or CHANGED
.
Returns NO_CHANGE
if, and only if, the delta is empty.default long getFlags()
&
operator.
For example:
if ((flags & F_CONTENT) != 0) // a content change
Some change flags make sense for most models and are predefined in
IElementDeltaConstants
, while others are model-specific and are
defined by the model implementor. The range for model-specific change
flags starts from 1L << 32
and includes the upper 32 bits of the
long
value. The lower 32 bits are reserved for predefined
generic change flags.
Move operations are indicated by special change flags. If an element is
moved from A to B (with no other changes to A or B), then A will have
kind REMOVED
, with flag F_MOVED_TO
, and getMovedToElement()
on A will return the handle for B. B will have
kind ADDED
, with flag F_MOVED_FROM
, and getMovedFromElement()
on B will return the handle for A. (Note that the
handle for A in this case represents an element that no longer exists.)
default IElementDelta[] getAffectedChildren()
null
). Clients must not modify
the returned array.default IElementDelta[] getAddedChildren()
null
). Clients must not modify
the returned array.default IElementDelta[] getRemovedChildren()
null
). Clients must not modify
the returned array.default IElementDelta[] getChangedChildren()
null
). Clients must not modify
the returned array.default IElement getMovedFromElement()
null
if the F_MOVED_FROM
change flag is not set.null
if the F_MOVED_FROM
change flag is not setgetMovedToElement()
,
getFlags()
default IElement getMovedToElement()
null
if the F_MOVED_TO
change flag is not set.null
if the F_MOVED_TO
change flag is not setgetMovedFromElement()
,
getFlags()
default org.eclipse.core.resources.IMarkerDelta[] getMarkerDeltas()
Returns null
if no markers changed. Note that this is
an exception to the general convention of returning an empty array
rather than null
. This makes the method safe to call
even when org.eclipse.core.resources
bundle is not
available.
Note that marker deltas, like element deltas, are generally only valid for the dynamic scope of change notification. Clients must not hang on to these objects.
null
if none.
Clients must not modify the returned array.default org.eclipse.core.resources.IResourceDelta[] getResourceDeltas()
Returns null
if there were no such changes. Note that this
is an exception to the general convention of returning an empty array
rather than null
. This makes the method safe to call even
when org.eclipse.core.resources
bundle is not available.
Note that resource deltas, like element deltas, are generally only valid for the dynamic scope of change notification. Clients must not hang on to these objects.
null
if none.
Clients must not modify the returned array.Copyright (c) 2014, 2019 1C-Soft LLC and others. Made available under the Eclipse Public License 2.0