Package org.eclipse.emf.compare.rcp.ui.internal.contentmergeviewer.customization

Class ContentMergeViewerCustomizationRegistryListener

java.lang.Object

org.eclipse.emf.compare.rcp.extension.AbstractRegistryEventListener

org.eclipse.emf.compare.rcp.ui.internal.contentmergeviewer.customization.ContentMergeViewerCustomizationRegistryListener

All Implemented Interfaces:

EventListener, org.eclipse.core.runtime.IRegistryEventListener

public class ContentMergeViewerCustomizationRegistryListener
extends AbstractRegistryEventListener

The listener responsible for handling registration events regarding content merge viewer customizations.

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.emf.compare.rcp.extension.AbstractRegistryEventListener

AbstractRegistryEventListener.Action

Constructor Summary

Constructors

Constructor	Description
ContentMergeViewerCustomizationRegistryListener(String pluginID, String extensionPointID, org.eclipse.core.runtime.ILog log, ContentMergeViewerCustomizationRegistry contentMergeViewerCustomizationRegistry)	Initialize a registry event listener for our handlers.

Method Summary

Modifier and Type	Method	Description
protected boolean	addedValid(org.eclipse.core.runtime.IConfigurationElement element)	Process the given element as the addition of a valid element extension.
protected String	getAttribute(org.eclipse.core.runtime.IConfigurationElement element, String attributeName, String defaultResult)	Returns the attribute with the attributeName from the given element.
protected boolean	removedValid(org.eclipse.core.runtime.IConfigurationElement element)	Process the given element as the removal of a valid element extension.
protected boolean	validateExtensionElement(org.eclipse.core.runtime.IConfigurationElement element)	Validates if the given element is an element for the given extension and is well constructed.

Methods inherited from class org.eclipse.emf.compare.rcp.extension.AbstractRegistryEventListener

added, added, log, log, log, logMissingAttribute, readElement, readRegistry, removed, removed

Methods inherited from class java.lang.Object

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

Constructor Details

ContentMergeViewerCustomizationRegistryListener

public ContentMergeViewerCustomizationRegistryListener(String pluginID,
 String extensionPointID,
 org.eclipse.core.runtime.ILog log,
 ContentMergeViewerCustomizationRegistry contentMergeViewerCustomizationRegistry)

Initialize a registry event listener for our handlers.

Parameters:

pluginID - ID of the plugin contributing the extension point to monitor.

extensionPointID - Actual id of the extension point to monitor.

log - Log in which errors/warning should be logged.

contentMergeViewerCustomizationRegistry - The actual store of handlers this registry will alter.

Method Details

addedValid

protected boolean addedValid(org.eclipse.core.runtime.IConfigurationElement element)

Description copied from class: AbstractRegistryEventListener

Process the given element as the addition of a valid element extension.

Specified by:

addedValid in class AbstractRegistryEventListener

Parameters:

element - the element to be added.

Returns:

true if the given element has been added and if its children should be processed, false otherwise.

getAttribute

protected String getAttribute(org.eclipse.core.runtime.IConfigurationElement element,
 String attributeName,
 String defaultResult)

Returns the attribute with the attributeName from the given element.

Parameters:

element - the IConfigurationElement.

attributeName - the name of the attribute which's value is to be determined.

defaultResult - the result of this method if the attribute does not exist.

Returns:

The determined value of the attribute if it exists, defaultResult otherwise.

removedValid

protected boolean removedValid(org.eclipse.core.runtime.IConfigurationElement element)

Process the given element as the removal of a valid element extension.

Specified by:

removedValid in class AbstractRegistryEventListener

Parameters:

element - the element to be removed.

Returns:

true if the given element has been removed and if its children should be processed, false otherwise.

See Also:

• AbstractRegistryEventListener.removedValid(org.eclipse.core.runtime.IConfigurationElement)

validateExtensionElement

protected boolean validateExtensionElement(org.eclipse.core.runtime.IConfigurationElement element)

Validates if the given element is an element for the given extension and is well constructed. Returns true if the element should be further parsed for addition or removal.

Specified by:

validateExtensionElement in class AbstractRegistryEventListener

Parameters:

element - the element to validate.

Returns:

true if the element should be further parsed for addition or removal, else otherwise.

See Also:

• AbstractRegistryEventListener.validateExtensionElement(org.eclipse.core.runtime.IConfigurationElement)