Examples of org.eclipse.jface.text.IDocument

org.eclipse.jface.text.IDocument
An IDocument represents text providing support for
- text manipulation
- positions
- partitions
- line information
- document change listeners
- document partition change listeners
A document allows to set its content and to manipulate it. For manipulation a document provides the replace method which substitutes a given string for a specified text range in the document. On each document change, all registered document listeners are informed exactly once.
Positions are stickers to the document's text that are updated when the document is changed. Positions are updated by {@link org.eclipse.jface.text.IPositionUpdater}s. Position updaters are managed as a list. The list defines the sequence in which position updaters are invoked. This way, position updaters may rely on each other. Positions are grouped into categories. A category is a ordered list of positions. the document defines the order of position in a category based on the position's offset based on the implementation of the method computeIndexInCategory. Each document must support a default position category whose name is specified by this interface.

A document can be considered consisting of a sequence of not overlapping partitions. A partition is defined by its offset, its length, and its type. Partitions are updated on every document manipulation and ensured to be up-to-date when the document listeners are informed. A document uses an IDocumentPartitioner to manage its partitions. A document may be unpartitioned which happens when there is no partitioner. In this case, the document is considered as one single partition of a default type. The default type is specified by this interface. If a document change changes the document's partitioning all registered partitioning listeners are informed exactly once. The extension interface {@link org.eclipse.jface.text.IDocumentExtension3}introduced in version 3.0 extends the concept of partitions and allows a document to not only manage one but multiple partitioning. Each partitioning has an id which must be used to refer to a particular partitioning.

An IDocument provides methods to map line numbers and character positions onto each other based on the document's line delimiters. When moving text between documents using different line delimiters, the text must be converted to use the target document's line delimiters.

An IDocument does not care about mixed line delimiters. Clients who want to ensure a single line delimiter in their document should use the line delimiter returned by {@link org.eclipse.jface.text.TextUtilities#getDefaultLineDelimiter(IDocument)}.

IDocument throws BadLocationException if the parameters of queries or manipulation requests are not inside the bounds of the document. The purpose of this style of exception handling is
- prepare document for multi-thread access
- allow clients to implement backtracking recovery methods
- prevent clients from up-front contract checking when dealing with documents.
A document support for searching has deprecated since version 3.0. The recommended way for searching is to use a {@link org.eclipse.jface.text.FindReplaceDocumentAdapter}.

In order to provide backward compatibility for clients of IDocument, extension interfaces are used to provide a means of evolution. The following extension interfaces exist:
- {@link org.eclipse.jface.text.IDocumentExtension} since version 2.0 introducing the conceptof post notification replaces in order to allow document listeners to manipulate the document while receiving a document change notification
- {@link org.eclipse.jface.text.IDocumentExtension2} since version 2.1 introducing configurationmethods for post notification replaces and document change notification.
- {@link org.eclipse.jface.text.IDocumentExtension3} since version 3.0 replacing the originalpartitioning concept by allowing multiple partitionings at the same time and introducing zero- length partitions in conjunction with the distinction between open and closed partitions.
- {@link org.eclipse.jface.text.IDocumentExtension4} since version 3.1 introducing theconcept of rewrite sessions. A rewrite session is a sequence of document replace operations that form a semantic unit. It also introduces a modification stamp and the ability to set the initial line delimiter and to query the default line delimiter.
Clients may implement this interface and its extension interfaces or use the default implementation provided by AbstractDocument and Document.
@see org.eclipse.jface.text.IDocumentExtension @see org.eclipse.jface.text.IDocumentExtension2 @see org.eclipse.jface.text.IDocumentExtension3 @see org.eclipse.jface.text.IDocumentExtension4 @see org.eclipse.jface.text.Position @see org.eclipse.jface.text.IPositionUpdater @see org.eclipse.jface.text.IDocumentPartitioner @see org.eclipse.jface.text.ILineTracker @see org.eclipse.jface.text.IDocumentListener @see org.eclipse.jface.text.IDocumentPartitioningListener

    IPath path = fSourceModule.getPath();
    bufferManager.connect(path, LocationKind.IFILE, null);
    ITextFileBuffer textFileBuffer = bufferManager.getTextFileBuffer(path,
        LocationKind.IFILE);
    
    IDocument document = textFileBuffer.getDocument();
    
    DocumentChange anotherChange = new DocumentChange(RefactoringMessages.ExtractMethodPreviewPage_TextChangeName, document);
    
    MultiTextEdit rootEdit = new MultiTextEdit();

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  }


  private String computeReplacementString() {


    ITextViewer viewer = getTextViewer();
    IDocument document = viewer.getDocument();
    ITextEditor textEditor = ((PHPStructuredTextViewer) viewer)
        .getTextEditor();


    try {

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    public DuplicatedCodeInstanceElement(final IFile containingFile, final int startLine,
            final int startColumn, final int endLine, final int endColumn) {


        this.containingFile = containingFile;
        this.startLine = startLine;
        final IDocument doc = WranglerUtils.getDocument(containingFile);
        try {
            startOffset = WranglerUtils.calculateOffsetFromPosition(startLine,
                    startColumn, doc);
            endOffset = WranglerUtils
                    .calculateOffsetFromPosition(endLine, endColumn, doc);

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         * @see org.eclipse.jface.viewers.ISelectionProvider#getSelection()
         */
        @Override
        public ISelection getSelection() {
            if (fControl instanceof StyledText) {
                final IDocument document = new Document(
                        ((StyledText) fControl).getSelectionText());
                return new TextSelection(document, 0, document.getLength());
            }
            return StructuredSelection.EMPTY;
        }

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    public IHyperlink[] detectHyperlinks(final ITextViewer textViewer,
            final IRegion region, final boolean canShowMultipleHyperlinks) {
        if (region == null) {
            return null;
        }
        final IDocument document = textViewer.getDocument();
        if (document == null) {
            return null;
        }
        return detectHyperlinks(document, region.getOffset());
    }

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        final int offset = invocationContext.getOffset();
        final ErlToken token = module.getScanner().getTokenAt(offset);
        if (token == null || token.getKind() != ErlToken.KIND_STRING) {
            return false;
        }
        final IDocument doc = viewer.getDocument();
        String text;
        try {
            text = doc.get(token.getOffset(), token.getLength());
            if (text.contains("\n")) {
                return true;
            }
        } catch (final BadLocationException e) {
        }

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        if (content == null) {
            fViewer.setInput(null);
            return;
        }


        final IDocument doc = new Document(content);
        fViewer.setInput(doc);
    }

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        if (module == null) {
            return;
        }
        final ITextEditor textEditor = getTextEditor();
        {
            final IDocument document = textEditor.getDocumentProvider().getDocument(
                    textEditor.getEditorInput());
            final String text = document.get();
            final String scannerName = module.getScannerName();


            final InternalScanner internalScanner = (InternalScanner) ErlangEngine
                    .getInstance().getSimpleScannerService();
            final OtpErlangObject checkAll = internalScanner.checkAll(scannerName, text,

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        fGlobalActions.put(actionID, action);
        actionBars.setGlobalActionHandler(actionID, action);
    }


    protected void contextMenuAboutToShow(final IMenuManager menuManager) {
        final IDocument doc = consoleOutputViewer.getDocument();
        if (doc == null) {
            return;
        }


        menuManager.add(fGlobalActions.get(ActionFactory.CUT.getId()));

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     */
    @Override
    public IStructureComparator getStructure(final Object input) {
        String contents = null;
        char[] buffer = null;
        IDocument doc = CompareUI.getDocument(input);
        if (doc == null) {
            if (input instanceof IStreamContentAccessor) {
                final IStreamContentAccessor sca = (IStreamContentAccessor) input;
                try {
                    contents = ErlangCompareUtilities.readString(sca);

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