Examples of org.eclipse.jface.text.ITextHover

org.eclipse.jface.text.ITextHover

Computes the information to be shown in a hover popup which appears on top of the text viewer's text widget when a hover event occurs. If the text hover does not provide information no hover popup is shown. Any implementer of this interface must be capable of operating in a non-UI thread.

In order to provide backward compatibility for clients of ITextHover, extension interfaces are used as a means of evolution. The following extension interfaces exist:

{@link org.eclipse.jface.text.ITextHoverExtension} since version 3.0allowing a text hover to provide a creator for the hover control. This allows for sophisticated hovers in a way that information computed by the hover can be displayed in the best possible form.
{@link org.eclipse.jface.text.ITextHoverExtension2} since version 3.4allowing a text hover to return hover-specific information objects.

Clients may implement this interface.

@see org.eclipse.jface.text.ITextHoverExtension @see org.eclipse.jface.text.ITextHoverExtension2 @see org.eclipse.jface.text.ITextViewer

    // either had no best match hover or best match hover returned null
    if (displayText == null) {
      // go through list of text hovers and return first display string
      Iterator i = getTextHovers().iterator();
      while ((i.hasNext()) && (displayText == null)) {
        ITextHover hover = (ITextHover) i.next();
        displayText = hover.getHoverInfo(viewer, hoverRegion);
      }
    }
    return displayText;
  }

   */
  public IRegion getHoverRegion(ITextViewer viewer, int offset) {
    IRegion hoverRegion = null;


    // go through list of text hovers and return first hover region
    ITextHover hover = null;
    Iterator i = getTextHovers().iterator();
    while ((i.hasNext()) && (hoverRegion == null)) {
      hover = (ITextHover) i.next();
      hoverRegion = hover.getHoverRegion(viewer, offset);
    }


    // store the text hover processor that found region
    if (hoverRegion != null)
      fBestMatchHover = hover;

          return;
      }


      if (sourceViewer instanceof ITextViewerExtension2) {
        // does a text hover exist?
        ITextHover textHover= ((ITextViewerExtension2) sourceViewer).getCurrentTextHover();
        if (textHover != null && makeTextHoverFocusable(sourceViewer, textHover))
          return;
      }


      if (sourceViewer instanceof ISourceViewerExtension3) {

Examples of org.eclipse.jface.text.ITextHover

Related Classes of org.eclipse.jface.text.ITextHover