Examples with ITextViewerExtension5 org.eclipse.jface.text.ITextViewerExtension5 used on opensource projects

Example 16 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class LinkedModeUI method select.

private void select() {
    ITextViewer viewer = fCurrentTarget.getViewer();
    if (viewer instanceof ITextViewerExtension5) {
        ITextViewerExtension5 extension5 = (ITextViewerExtension5) viewer;
        extension5.exposeModelRange(new Region(fFramePosition.offset, fFramePosition.length));
    } else if (!viewer.overlapsWithVisibleRegion(fFramePosition.offset, fFramePosition.length)) {
        viewer.resetVisibleRegion();
    }
    viewer.revealRange(fFramePosition.offset, fFramePosition.length);
    viewer.setSelectedRange(fFramePosition.offset, fFramePosition.length);
}

Example 17 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class AbstractTextEditor method isVisible.

/**
 * Tells whether the given region is visible in the given source viewer.
 *
 * @param viewer the source viewer
 * @param offset the offset of the region
 * @param length the length of the region
 * @return <code>true</code> if visible
 * @since 2.1
 */
protected static final boolean isVisible(ISourceViewer viewer, int offset, int length) {
    if (viewer instanceof ITextViewerExtension5) {
        ITextViewerExtension5 extension = (ITextViewerExtension5) viewer;
        IRegion overlap = extension.modelRange2WidgetRange(new Region(offset, length));
        return overlap != null;
    }
    return viewer.overlapsWithVisibleRegion(offset, length);
}

Example 18 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class MarkRegionTarget method isVisible.

/**
 * Tells whether the given offset is visible in the given text viewer.
 *
 * @param viewer the text viewer
 * @param offset the offset to check
 * @return <code>true</code> if the given offset is visible in the given text viewer
 *
 * @since 2.1
 */
protected static final boolean isVisible(ITextViewer viewer, int offset) {
    if (viewer instanceof ITextViewerExtension5) {
        ITextViewerExtension5 extension = (ITextViewerExtension5) viewer;
        return extension.modelOffset2WidgetOffset(offset) >= 0;
    }
    IRegion region = viewer.getVisibleRegion();
    int vOffset = region.getOffset();
    return (vOffset <= offset && offset <= vOffset + region.getLength());
}

Example 19 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class MoveLinesAction method containedByVisibleRegion.

/**
 * Checks if <code>selection</code> is contained by the visible region of <code>viewer</code>.
 * As a special case, a selection is considered contained even if it extends over the visible
 * region, but the extension stays on a partially contained line and contains only white space.
 *
 * @param selection the selection to be checked
 * @param viewer the viewer displaying a visible region of <code>selection</code>'s document.
 * @return <code>true</code>, if <code>selection</code> is contained, <code>false</code> otherwise.
 */
private boolean containedByVisibleRegion(ITextSelection selection, ITextViewer viewer) {
    int min = selection.getOffset();
    int max = min + selection.getLength();
    IDocument document = viewer.getDocument();
    IRegion visible;
    if (viewer instanceof ITextViewerExtension5)
        visible = ((ITextViewerExtension5) viewer).getModelCoverage();
    else
        visible = viewer.getVisibleRegion();
    int visOffset = visible.getOffset();
    try {
        if (visOffset > min) {
            if (document.getLineOfOffset(visOffset) != selection.getStartLine())
                return false;
            if (!isWhitespace(document.get(min, visOffset - min))) {
                showStatus();
                return false;
            }
        }
        int visEnd = visOffset + visible.getLength();
        if (visEnd < max) {
            if (document.getLineOfOffset(visEnd) != selection.getEndLine())
                return false;
            if (!isWhitespace(document.get(visEnd, max - visEnd))) {
                showStatus();
                return false;
            }
        }
        return true;
    } catch (BadLocationException e) {
    }
    return false;
}

Example 20 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class MoveLinesAction method runWithEvent.

/*
	 * @see org.eclipse.jface.action.IAction#run()
	 */
@Override
public void runWithEvent(Event event) {
    if (fTextViewer == null)
        return;
    if (!validateEditorInputState())
        return;
    // get involved objects
    IDocument document = fTextViewer.getDocument();
    if (document == null)
        return;
    StyledText widget = fTextViewer.getTextWidget();
    if (widget == null)
        return;
    // get selection
    ITextSelection sel = (ITextSelection) fTextViewer.getSelectionProvider().getSelection();
    if (sel.isEmpty())
        return;
    ITextSelection skippedLine = getSkippedLine(document, sel);
    if (skippedLine == null)
        return;
    try {
        ITextSelection movingArea = getMovingSelection(document, sel, fTextViewer);
        // visible area, bail out
        if (!containedByVisibleRegion(movingArea, fTextViewer) || !containedByVisibleRegion(skippedLine, fTextViewer))
            return;
        // get the content to be moved around: the moving (selected) area and the skipped line
        String moving = movingArea.getText();
        String skipped = skippedLine.getText();
        if (moving == null || skipped == null || document.getLength() == 0)
            return;
        String delim;
        String insertion;
        int offset, deviation;
        if (fUpwards) {
            delim = document.getLineDelimiter(skippedLine.getEndLine());
            if (fCopy) {
                delim = TextUtilities.getDefaultLineDelimiter(document);
                insertion = moving + delim;
                offset = movingArea.getOffset();
                deviation = 0;
            } else {
                Assert.isNotNull(delim);
                insertion = moving + delim + skipped;
                offset = skippedLine.getOffset();
                deviation = -skippedLine.getLength() - delim.length();
            }
        } else {
            delim = document.getLineDelimiter(movingArea.getEndLine());
            if (fCopy) {
                if (delim == null) {
                    delim = TextUtilities.getDefaultLineDelimiter(document);
                    insertion = delim + moving;
                } else {
                    insertion = moving + delim;
                }
                offset = skippedLine.getOffset();
                deviation = movingArea.getLength() + delim.length();
            } else {
                Assert.isNotNull(delim);
                insertion = skipped + delim + moving;
                offset = movingArea.getOffset();
                deviation = skipped.length() + delim.length();
            }
        }
        // modify the document
        beginCompoundEdit();
        if (fCopy) {
            // fDescription= new EditDescription(offset, 0, insertion.length());
            document.replace(offset, 0, insertion);
        } else {
            // fDescription= new EditDescription(offset, insertion.length(), insertion.length());
            document.replace(offset, insertion.length(), insertion);
        }
        // move the selection along
        int selOffset = movingArea.getOffset() + deviation;
        int selLength = movingArea.getLength() + (fAddDelimiter ? delim.length() : 0);
        if (!(fTextViewer instanceof ITextViewerExtension5))
            selLength = Math.min(selLength, fTextViewer.getVisibleRegion().getOffset() + fTextViewer.getVisibleRegion().getLength() - selOffset);
        else {
        // TODO need to check what is necessary in the projection case
        }
        selectAndReveal(fTextViewer, selOffset, selLength);
    } catch (BadLocationException x) {
        // won't happen without concurrent modification - bail out
        return;
    }
}