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

Example 56 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project xtext-eclipse by eclipse.

the class MarkRegionTargetWithoutStatusline 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
 */
protected 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 57 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project xtext-eclipse by eclipse.

the class TextViewerJoinLinesAction method adjustHighlightRange.

/**
 * Adjusts the highlight range so that at least the specified range
 * is highlighted.
 * <p>
 * Subclasses may re-implement this method.</p>
 *
 * @param offset the offset of the range which at least should be highlighted
 * @param length the length of the range which at least should be highlighted
 */
protected void adjustHighlightRange(ITextViewer viewer, int offset, int length) {
    if (viewer == null)
        return;
    if (viewer instanceof ITextViewerExtension5) {
        ITextViewerExtension5 extension = (ITextViewerExtension5) viewer;
        extension.exposeModelRange(new Region(offset, length));
    } else if (!isVisible(viewer, offset, length)) {
        viewer.resetVisibleRegion();
    }
}

Example 58 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project xtext-eclipse by eclipse.

the class TextViewerJoinLinesAction method isVisible.

protected boolean isVisible(ITextViewer 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);
}