Java ITextHoverExtension2类代码示例

import org.eclipse.jface.text.ITextHoverExtension2; //导入依赖的package包/类
@SuppressWarnings("deprecation")
public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion) {
	if (currentHover != null) {
		if (currentHover instanceof ITextHoverExtension2)
			return ((ITextHoverExtension2) currentHover).getHoverInfo2(textViewer, hoverRegion);
		else {
			return currentHover.getHoverInfo(textViewer, hoverRegion);
		}
	}
	return null;
}
 

import org.eclipse.jface.text.ITextHoverExtension2; //导入依赖的package包/类
@SuppressWarnings("deprecation")
public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion)
{
	if (activeTextHover != null)
	{
		Object info = null;
		if (activeTextHover instanceof AbstractCommonTextHover)
		{
			AbstractCommonTextHover commonHover = (AbstractCommonTextHover) activeTextHover;
			commonHover.setEditor(getEditor());
		}
		if (activeTextHover instanceof ITextHoverExtension2)
		{
			info = ((ITextHoverExtension2) activeTextHover).getHoverInfo2(textViewer, hoverRegion);
		}
		else
		{
			info = activeTextHover.getHoverInfo(textViewer, hoverRegion);
		}
		if (info != null)
		{
			return info;
		}
	}
	String defaultInfo = super.getHoverInfo(textViewer, hoverRegion);
	if (defaultInfo != null)
	{
		// wrap it in a SimpleTextHover so it will look the same as other hovers (i.e. use the theme colors,
		// etc.)
		return new SimpleTextHover(defaultInfo, null).getHoverInfo2(textViewer, hoverRegion);
	}
	return null;
}
 

import org.eclipse.jface.text.ITextHoverExtension2; //导入依赖的package包/类
@SuppressWarnings("deprecation")
@Override
public IRegion getHoverRegion(ITextViewer textViewer, int offset)
{
	activeTextHover = null;
	List<TextHoverDescriptor> descriptors = getEnabledTextHoverDescriptors(textViewer, offset);
	for (TextHoverDescriptor descriptor : descriptors)
	{
		ITextHover textHover = descriptor.createTextHover();
		IRegion region = null;
		if (textHover != null)
		{
			region = textHover.getHoverRegion(textViewer, offset);
		}
		if (region != null)
		{
			if (descriptors.size() > 1)
			{
				if (textHover instanceof ITextHoverExtension2)
				{
					if (((ITextHoverExtension2) textHover).getHoverInfo2(textViewer, region) == null)
					{
						continue;
					}
				}
				else if (textHover.getHoverInfo(textViewer, region) == null)
				{
					continue;
				}
			}
			activeTextHover = textHover;
			return region;
		}
	}
	return super.getHoverRegion(textViewer, offset);
}
 

import org.eclipse.jface.text.ITextHoverExtension2; //导入依赖的package包/类
/**
 * Returns the information which should be presented when a hover or persistent popup is shown
 * for the specified hover region.
 * 
 * @param textViewer the viewer on which the hover popup should be shown
 * @param hoverRegion the text range in the viewer which is used to determine the hover display
 *            information
 * @param forInformationProvider <code>true</code> iff the hover info is requested by the
 *            information presenter. In this case, the method only considers text hovers for
 *            which a proper IInformationControlCreator is available that can supply focusable
 *            and resizable information controls.
 * 
 * @return the hover popup display information, or <code>null</code> if none available
 * 
 * @see ITextHoverExtension2#getHoverInfo2(ITextViewer, IRegion)
 * @since 3.8
 */
public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion, boolean forInformationProvider) {

	checkTextHovers();
	fBestHover= null;

	if (fInstantiatedTextHovers == null)
		return null;

	for (Iterator<IJavaEditorTextHover> iterator= fInstantiatedTextHovers.iterator(); iterator.hasNext(); ) {
		ITextHover hover= iterator.next();
		if (hover == null)
			continue;

		if (hover instanceof ITextHoverExtension2) {
			Object info= ((ITextHoverExtension2) hover).getHoverInfo2(textViewer, hoverRegion);
			if (info != null && !(forInformationProvider && getInformationPresenterControlCreator(hover) == null)) {
				fBestHover= hover;
				return info;
			}
		} else {
			String s= hover.getHoverInfo(textViewer, hoverRegion);
			if (s != null && s.trim().length() > 0) {
				fBestHover= hover;
				return s;
			}
		}
	}

	return null;
}
 

import org.eclipse.jface.text.ITextHoverExtension2; //导入依赖的package包/类
@Override
public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion) {
	if (ensureHoverCreated()) {
		if (fHover instanceof ITextHoverExtension2)
			return ((ITextHoverExtension2) fHover).getHoverInfo2(textViewer, hoverRegion);
		else
			return fHover.getHoverInfo(textViewer, hoverRegion);
	}

	return null;
}
 

import org.eclipse.jface.text.ITextHoverExtension2; //导入依赖的package包/类
@SuppressWarnings("deprecation")
@Override
public Object getHoverInfo(ISourceBuffer sourceBuffer, IRegion hoverRegion, ITextViewer textViewer) {
       
	fDelegate = getDelegate();
       if (fDelegate instanceof ITextHoverExtension2) {
		return ((ITextHoverExtension2) fDelegate).getHoverInfo2(textViewer, hoverRegion);
       }
       // fall back to legacy method
       if (fDelegate != null) {
           return fDelegate.getHoverInfo(textViewer, hoverRegion);
       }
       return null;
   }