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Eclipse Platform
Release 3.0

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org.eclipse.text.edits
Class MoveSourceEdit

java.lang.Object
  org.eclipse.text.edits.TextEdit
      org.eclipse.text.edits.MoveSourceEdit

public final class MoveSourceEdit

extends TextEdit

A move source edit denotes the source of a move operation. Move source edits are only valid inside an edit tree if they have a corresponding traget edit. Furthermore the corresponding target edit can't be a direct or indirect child of the source edit. Violating one of two requirements will result in a MalformedTreeException when executing the edit tree.

A move source edit can manange an optional source modifier. A source modifier can provide a set of replace edits which will to applied to the source before it gets inserted at the target position.

Since:

3.0

See Also:

MoveTargetEdit, CopySourceEdit

Field Summary

Fields inherited from class org.eclipse.text.edits.TextEdit

CREATE_UNDO, NONE, UPDATE_REGIONS

Constructor Summary

MoveSourceEdit(int offset, int length)
Constructs a new move source edit.

MoveSourceEdit(int offset, int length, MoveTargetEdit target)
Constructs a new copy source edit.

Method Summary

protected void	accept0(TextEditVisitor visitor) Accepts the given visitor on a type-specific visit of the current edit.
protected TextEdit	doCopy() Creates and returns a copy of this edit.
ISourceModifier	getSourceModifier() Returns the current source modifier or null if no source modifier is set.
MoveTargetEdit	getTargetEdit() Returns the associated traget edit or null if no target edit is associated yet.
static IRegion	intersect(TextEdit op1, TextEdit op2)
protected void	postProcessCopy(TextEditCopier copier) This method is called on every edit of the copied tree to do some post-processing like connected an edit to a different edit in the tree.
void	setSourceModifier(ISourceModifier modifier) Sets the optional source modifier.
void	setTargetEdit(MoveTargetEdit edit) Sets the target edit.

Methods inherited from class org.eclipse.text.edits.TextEdit

accept, acceptChildren, addChild, addChildren, apply, apply, canZeroLengthCover, copy, covers, equals, getChildren, getChildrenSize, getCoverage, getExclusiveEnd, getInclusiveEnd, getLength, getOffset, getParent, getRegion, hasChildren, hashCode, isDeleted, removeChild, removeChild, removeChildren, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MoveSourceEdit

public MoveSourceEdit(int offset,
                      int length)

Constructs a new move source edit.

Parameters:

offset - the edit's offset

length - the edit's length

MoveSourceEdit

public MoveSourceEdit(int offset,
                      int length,
                      MoveTargetEdit target)

Constructs a new copy source edit.

Parameters:

offset - the edit's offset

length - the edit's length

target - the edit's target

Method Detail

getTargetEdit

public MoveTargetEdit getTargetEdit()

Returns the associated traget edit or null if no target edit is associated yet.

Returns:

the target edit or null

setTargetEdit

public void setTargetEdit(MoveTargetEdit edit)

Sets the target edit.

Parameters:

edit - the new target edit.

Throws:

MalformedTreeException - is thrown if the target edit is a direct or indirect child of the source edit

getSourceModifier

public ISourceModifier getSourceModifier()

Returns the current source modifier or null if no source modifier is set.

Returns:

the source modifier

setSourceModifier

public void setSourceModifier(ISourceModifier modifier)

Sets the optional source modifier.

Parameters:

modifier - the source modifier or null if no source modification is need.

doCopy

protected TextEdit doCopy()

Description copied from class: TextEdit

Creates and returns a copy of this edit. The copy method should be implemented in a way so that the copy can executed without causing any harm to the original edit. Implementors of this method are responsible for creating deep or shallow copies of referenced object to fullfil this requirement.

Implementers of this method should use the copy constructor Edit#Edit(Edit source) to initialize the edit part of the copy. Implementors aren't responsible to actually copy the children or to set the right parent.

This method should not be called from outside the framework. Please use copy to create a copy of a edit tree.

Specified by:

doCopy in class TextEdit

Returns:

a copy of this edit.

See Also:

TextEdit.copy(), TextEdit.postProcessCopy(TextEditCopier), TextEditCopier

postProcessCopy

protected void postProcessCopy(TextEditCopier copier)

Description copied from class: TextEdit

This method is called on every edit of the copied tree to do some post-processing like connected an edit to a different edit in the tree.

This default implementation does nothing

Overrides:

postProcessCopy in class TextEdit

Parameters:

copier - the copier that manages a map between original and copied edit.

See Also:

TextEditCopier

accept0

protected void accept0(TextEditVisitor visitor)

Description copied from class: TextEdit

Accepts the given visitor on a type-specific visit of the current edit. This method must be implemented in all concrete text edits.

General template for implementation on each concrete TextEdit class:

 
 boolean visitChildren = visitor.visit(this);
 if (visitChildren) {
    acceptChildren(visitor);
 }
 
 

Note that the caller (accept) takes care of invoking visitor.preVisit(this) and visitor.postVisit(this).

Specified by:

accept0 in class TextEdit

Parameters:

visitor - the visitor object

intersect

public static IRegion intersect(TextEdit op1,
                                TextEdit op2)