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org.eclipse.emf.edit.provider
Class AttributeValueWrapperItemProvider

java.lang.Object
  org.eclipse.emf.edit.provider.WrapperItemProvider
      org.eclipse.emf.edit.provider.AttributeValueWrapperItemProvider

All Implemented Interfaces:

IDisposable, IEditingDomainItemProvider, IItemLabelProvider, IItemPropertySource, IStructuredItemContentProvider, ITreeItemContentProvider, IWrapperItemProvider

public class AttributeValueWrapperItemProvider

extends WrapperItemProvider

implements IStructuredItemContentProvider, ITreeItemContentProvider, IItemLabelProvider, IItemPropertySource, IEditingDomainItemProvider

A wrapper implementation for simple attribute values.

Nested Class Summary

Nested classes inherited from class org.eclipse.emf.edit.provider.WrapperItemProvider

WrapperItemProvider.SimpleCopyCommand, WrapperItemProvider.WrappingCopyCommand

Field Summary

protected EAttribute	attribute The attribute through which the value can be set and retrieved.
protected int	index The index within the feature at which the value is located.
protected List	propertyDescriptors The single property descriptor for the value is cached here as a singleton list.

Fields inherited from class org.eclipse.emf.edit.provider.WrapperItemProvider

adapterFactory, COPY_COMMAND_DESCRIPTION, COPY_COMMAND_LABEL, owner, value

Constructor Summary

AttributeValueWrapperItemProvider(Object value, EObject owner, EAttribute attribute, AdapterFactory adapterFactory)
Creates an instance for a single-valued attribute.

AttributeValueWrapperItemProvider(Object value, EObject owner, EAttribute attribute, int index, AdapterFactory adapterFactory)
Creates an instance for a value within a multi-valued attribute.

Method Summary

protected Command	createCopyCommand(EditingDomain domain, Object owner, CopyCommand.Helper helper) Returns a WrapperItemProvider.SimpleCopyCommand that copies the value by converting it into a string and back, using the factory methods.
int	getIndex() Returns the index within the attribute at which the value is located.
List	getPropertyDescriptors(Object object) Creates, caches and returns a property descriptor decorator for the attribute of the owner.
protected Object	getPropertyImage() Calls getPropertyImage to obtain the property image for the attribute's type.
String	getText(Object object) If non-null, the value is converted to a string, using the type of its attribute and the appropriate factory.
protected boolean	isPropertySettable() Returns whether the attribute is changeable.
void	setIndex(int index) Sets the index.

Methods inherited from class org.eclipse.emf.edit.provider.WrapperItemProvider

baseCreateCommand, createCommand, createDragAndDropCommand, dispose, getChildren, getEditableValue, getElements, getImage, getNewChildDescriptors, getParent, getPropertyDescription, getPropertyDescriptor, getPropertyImage, getPropertyName, getRootAdapterFactory, getUpdateableText, getValue, hasChildren

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.eclipse.emf.edit.provider.IStructuredItemContentProvider

getElements

Methods inherited from interface org.eclipse.emf.edit.provider.ITreeItemContentProvider

getChildren, getParent, hasChildren

Methods inherited from interface org.eclipse.emf.edit.provider.IItemLabelProvider

getImage

Methods inherited from interface org.eclipse.emf.edit.provider.IItemPropertySource

getEditableValue, getPropertyDescriptor

Methods inherited from interface org.eclipse.emf.edit.provider.IEditingDomainItemProvider

createCommand, getChildren, getNewChildDescriptors, getParent

Field Detail

attribute

protected EAttribute attribute

The attribute through which the value can be set and retrieved.

index

protected int index

The index within the feature at which the value is located.

propertyDescriptors

protected List propertyDescriptors

The single property descriptor for the value is cached here as a singleton list.

Constructor Detail

AttributeValueWrapperItemProvider

public AttributeValueWrapperItemProvider(Object value,
                                         EObject owner,
                                         EAttribute attribute,
                                         AdapterFactory adapterFactory)

Creates an instance for a single-valued attribute.

AttributeValueWrapperItemProvider

public AttributeValueWrapperItemProvider(Object value,
                                         EObject owner,
                                         EAttribute attribute,
                                         int index,
                                         AdapterFactory adapterFactory)

Creates an instance for a value within a multi-valued attribute.

Method Detail

getIndex

public int getIndex()

Returns the index within the attribute at which the value is located.

Specified by:

getIndex in interface IWrapperItemProvider

Overrides:

getIndex in class WrapperItemProvider

setIndex

public void setIndex(int index)

Sets the index.

Specified by:

setIndex in interface IWrapperItemProvider

Overrides:

setIndex in class WrapperItemProvider

getText

public String getText(Object object)

If non-null, the value is converted to a string, using the type of its attribute and the appropriate factory.

Specified by:

getText in interface IItemLabelProvider

Overrides:

getText in class WrapperItemProvider

getPropertyDescriptors

public List getPropertyDescriptors(Object object)

Creates, caches and returns a property descriptor decorator for the attribute of the owner. Calls out to getPropertyName, getPropertyDescription, isPropertySettable, and getPropertyImage, giving subclasses an opportunity to override them and control these aspects of the property.

Specified by:

getPropertyDescriptors in interface IItemPropertySource

Overrides:

getPropertyDescriptors in class WrapperItemProvider

isPropertySettable

protected boolean isPropertySettable()

Returns whether the attribute is changeable.

Overrides:

isPropertySettable in class WrapperItemProvider

getPropertyImage

protected Object getPropertyImage()

Calls getPropertyImage to obtain the property image for the attribute's type.

Overrides:

getPropertyImage in class WrapperItemProvider

createCopyCommand

protected Command createCopyCommand(EditingDomain domain,
                                    Object owner,
                                    CopyCommand.Helper helper)

Returns a WrapperItemProvider.SimpleCopyCommand that copies the value by converting it into a string and back, using the factory methods.

Overrides:

createCopyCommand in class WrapperItemProvider