Examples with CommonBreakIterator org.eclipse.xtext.ui.editor.model.CommonBreakIterator used on opensource projects

Example 1 with CommonBreakIterator

use of org.eclipse.xtext.ui.editor.model.CommonBreakIterator in project xtext-xtend by eclipse.

the class XtendDoubleClickStrategyProvider method getStrategy.

@Override
public ITextDoubleClickStrategy getStrategy(ISourceViewer sourceViewer, String contentType, String documentPartitioning) {
    if (TokenTypeToPartitionMapper.RICH_STRING_LITERAL_PARTITION.equals(contentType)) {
        return new AbstractPartitionDoubleClickSelector(documentPartitioning) {

            @Override
            protected IRegion getSelectedRegion(IDocument document, ITypedRegion completePartition) throws BadLocationException {
                String content = document.get(completePartition.getOffset(), completePartition.getLength());
                // assume � as start character
                int trimLeft = 1;
                if (content.startsWith("'''")) {
                    trimLeft = 3;
                }
                int trimRight = 0;
                if (content.endsWith("'''")) {
                    trimRight = 3;
                } else if (content.endsWith("''")) {
                    trimRight = 2;
                } else if (content.endsWith("'") || content.endsWith("\u00AB")) {
                    trimRight = 1;
                }
                return new Region(completePartition.getOffset() + trimLeft, completePartition.getLength() - trimLeft - trimRight);
            }
        };
    }
    if (TokenTypeToPartitionMapper.JAVA_DOC_PARTITION.equals(contentType)) {
        return new AbstractPartitionDoubleClickSelector(documentPartitioning) {

            /**
             * Allows to select the complete <code>@param</code> instead of just the literal <code>param</code>.
             * Copied from org.eclipse.jdt.internal.ui.text.java.JavadocDoubleClickStrategy.
             */
            @Override
            protected IRegion findExtendedDoubleClickSelection(IDocument document, int position) {
                try {
                    IRegion match = super.findExtendedDoubleClickSelection(document, position);
                    if (match != null)
                        return match;
                    IRegion word = findWord(document, position);
                    IRegion line = document.getLineInformationOfOffset(position);
                    if (position == line.getOffset() + line.getLength())
                        return null;
                    int start = word.getOffset();
                    int end = start + word.getLength();
                    if (start > 0 && document.getChar(start - 1) == '@' && Character.isJavaIdentifierPart(document.getChar(start)) && (start == 1 || Character.isWhitespace(document.getChar(start - 2)) || document.getChar(start - 2) == '{')) {
                        // double click after @ident
                        start--;
                    } else if (end == position && end == start + 1 && end < line.getOffset() + line.getLength() && document.getChar(end) == '@') {
                        // double click before " @ident"
                        return findExtendedDoubleClickSelection(document, position + 1);
                    }
                    if (start == end)
                        return null;
                    return new Region(start, end - start);
                } catch (BadLocationException x) {
                    return null;
                }
            }

            @Override
            protected CommonBreakIterator createBreakIterator() {
                return new CommonBreakIterator(false) {

                    class Braces extends Other {

                        @Override
                        protected boolean isValid(char ch) {
                            return ch == '{' || ch == '}';
                        }
                    }

                    class Parentheses extends Other {

                        @Override
                        protected boolean isValid(char ch) {
                            return ch == '(' || ch == ')';
                        }
                    }

                    Braces braces = new Braces();

                    Parentheses parentheses = new Parentheses();

                    @Override
                    protected Run getRun(char ch) {
                        if (braces.isValid(ch)) {
                            return braces;
                        }
                        if (parentheses.isValid(ch)) {
                            return parentheses;
                        }
                        return super.getRun(ch);
                    }
                };
            }
        };
    }
    return super.getStrategy(sourceViewer, contentType, documentPartitioning);
}