Package org.eclipse.compare.contentmergeviewer
Package Specification
The ContentMergeViewer is an abstract compare and merge viewer with two side-by-side content areas and an optional content area for a common ancestor (for three-way compare). Because the implementation makes no assumptions about the content type it is a subclass responsibility to deal with a specific type. Its subclass ImageMergeViewer in package org.eclipse.compare.internal shows how to base a simple mergeviewer for images on ContentMergeViewer.A ContentMergeViewer accesses its model by means of a content provider which must implement the IMergeViewerContentProvider interface.
The TextMergeViewer is the standard concrete subclass of
ContentMergeViewer for comparing and merging text content.
A text merge viewer uses the org.eclipse.compare.rangedifferencer.RangeDifferencer
to perform a textual, line-by-line comparison of two (or three) input documents.
For text lines that differ the TextMergeViewer uses an ITokenComparator
to find longest sequences of matching and non-matching tokens.
The TextMergeViewer's
default token compare works on characters separated by whitespace. If a
different strategy is needed (for example, Java tokens in a Java-aware
merge viewer), clients can create their own token comparators by implementing
the ITokenComparator interface.
The TextMergeViewer not only works on whole documents but on subranges of documents too. In this case the viewer's input must be an IDocumentRange instead of an IDocument.
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ClassDescriptionAn abstract compare and merge viewer with two side-by-side content areas and an optional content area for the ancestor.Defines a subrange in a document.Interface which provides the ability to flush the contents from the viewer model (for example, an
IDocumentfor text based content) into the underlying compare model ( most likely an instance ofIEditableContent).A content provider that mediates between aContentMergeViewer's model and the viewer itself.For performing a so-called "token compare" on a line of text.A text merge viewer uses theRangeDifferencerto perform a textual, line-by-line comparison of two (or three) input documents.Implements theITokenComparatorinterface for words (or tokens) in a string.