org.opencms.ui.dialogs.history.diff

Class CmsTextDiff

java.lang.Object

org.opencms.ui.dialogs.history.diff.CmsTextDiff

All Implemented Interfaces:

I_CmsDiffProvider

public class CmsTextDiff
extends java.lang.Object
implements I_CmsDiffProvider

Interprets two versions of a resource as text files, and shows a diff view for the two texts.

This should work for both plaintext files as well as binary documents which from which OpenCms can extract text content.

Constructor Summary

Constructors

Constructor and Description
CmsTextDiff()

Method Summary

Modifier and Type	Method and Description
com.google.common.base.Optional<com.vaadin.ui.Component>	diff(CmsObject cms, CmsHistoryResourceBean v1, CmsHistoryResourceBean v2) Optionally returns a comparison component to display for the given resource versions.
protected java.lang.String	wrapLinesWithUnchangedStyle(java.lang.String diff) Returns a diff text wrapped with formatting style.

Methods inherited from class java.lang.Object

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

Constructor Detail

CmsTextDiff

public CmsTextDiff()

Method Detail

diff

public com.google.common.base.Optional<com.vaadin.ui.Component> diff(CmsObject cms,
                                                                     CmsHistoryResourceBean v1,
                                                                     CmsHistoryResourceBean v2)
                                                              throws CmsException

Description copied from interface: I_CmsDiffProvider

Optionally returns a comparison component to display for the given resource versions.

If no value is returned, then no widget is displayed.

Specified by:

diff in interface I_CmsDiffProvider

Parameters:

cms - the CMS context

v1 - bean representing the first version

v2 - bean representing the second version

Returns:

the optional component to display

Throws:

CmsException - if something goes wrong

See Also:

I_CmsDiffProvider.diff(org.opencms.file.CmsObject, org.opencms.gwt.shared.CmsHistoryResourceBean, org.opencms.gwt.shared.CmsHistoryResourceBean)

wrapLinesWithUnchangedStyle

protected java.lang.String wrapLinesWithUnchangedStyle(java.lang.String diff)
                                                throws java.io.IOException

Returns a diff text wrapped with formatting style.

Parameters:

diff - the text to wrap with CSS formatting

Returns:

the text with formatting styles wrapped

Throws:

java.io.IOException - if something goes wrong