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package org.eclipse.cdt.internal.ui.editor;
/*
* (c) Copyright QNX Software Systems Ltd. 2002.
* All Rights Reserved.
*/
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextHover;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.Region;
import org.eclipse.swt.graphics.Point;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.cdt.internal.ui.CCompletionContributorManager;
import org.eclipse.cdt.internal.ui.text.CWordFinder;
import org.eclipse.cdt.internal.ui.text.HTMLPrinter;
import org.eclipse.cdt.ui.IFunctionSummary;
public class DefaultCEditorTextHover implements ITextHover
{
protected IEditorPart fEditor;
/**
* Constructor for DefaultCEditorTextHover
*/
public DefaultCEditorTextHover( IEditorPart editor )
{
fEditor = editor;
}
/**
* @see ITextHover#getHoverInfo(ITextViewer, IRegion)
*/
public String getHoverInfo( ITextViewer viewer, IRegion region )
{
// String expression = null;
//
// if(fEditor == null)
// return null;
// try
// {
// expression = viewer.getDocument().get( region.getOffset(), region.getLength() );
// expression = expression.trim();
// if ( expression.length() == 0 )
// return null;
//
// StringBuffer buffer = new StringBuffer();
//
// // We are just doing some C, call the Help to get info
//
// IFunctionSummary fs = CCompletionContributorManager.getDefault().getFunctionInfo(expression);
// if(fs != null) {
// buffer.append("<b>");
// buffer.append(HTMLPrinter.convertToHTMLContent(fs.getName()));
// buffer.append("()</b>");
// buffer.append(HTMLPrinter.convertToHTMLContent(fs.getPrototype().getPrototypeString(false)));
// if(fs.getDescription() != null) {
// buffer.append("<br><br>");
// buffer.append(HTMLPrinter.convertToHTMLContent(fs.getDescription()));
// }
// int i;
// for(i = 0; i < buffer.length(); i++) {
// if(buffer.charAt(i) == '\\') {
// if((i + 1 < buffer.length()) && buffer.charAt(i+1) == 'n') {
// buffer.replace(i, i + 2, "<br>");
// }
// }
// }
// } else {
// // Query the C model
// IndexModel model = IndexModel.getDefault();
// IEditorInput input = fEditor.getEditorInput();
// if(input instanceof IFileEditorInput) {
// IProject project = ((IFileEditorInput)input).getFile().getProject();
//
// // Bail out quickly, if the project was deleted.
// if (!project.exists())
// throw new CoreException(new Status(0, "", 0, "", null));
//
// IProject[] refs = project.getReferencedProjects();
//
// ITagEntry[] tags= model.query(project, expression, false, true);
//
// if(tags == null || tags.length == 0) {
// for ( int j= 0; j < refs.length; j++ ) {
// if (!refs[j].exists())
// continue;
// tags= model.query(refs[j], expression, false, true);
// if(tags != null && tags.length > 0)
// break;
// }
// }
//
// if(tags != null && tags.length > 0) {
// ITagEntry selectedTag = selectTag(tags);
// // Show only the first element
// buffer.append("<b> " + TagFlags.value(selectedTag.getKind()) + " " + HTMLPrinter.convertToHTMLContent(expression) +
// "</b> - " + selectedTag.getIFile().getFullPath().toString() + "[" + selectedTag.getLineNumber()+"]" );
// // Now add the pattern
// buffer.append("<br><br>" + HTMLPrinter.convertToHTMLContent(selectedTag.getPattern()));
// }
// }
// }
// if (buffer.length() > 0) {
// HTMLPrinter.insertPageProlog(buffer, 0);
// HTMLPrinter.addPageEpilog(buffer);
// return buffer.toString();
// }
// }
// catch( BadLocationException x )
// {
// // ignore
// }
// catch( CoreException x )
// {
// // ignore
// }
return null;
}
/**
* @see ITextHover#getHoverRegion(ITextViewer, int)
*/
public IRegion getHoverRegion( ITextViewer viewer, int offset )
{
Point selectedRange = viewer.getSelectedRange();
if ( selectedRange.x >= 0 &&
selectedRange.y > 0 &&
offset >= selectedRange.x &&
offset <= selectedRange.x + selectedRange.y )
return new Region( selectedRange.x, selectedRange.y );
if ( viewer != null )
return CWordFinder.findWord( viewer.getDocument(), offset );
return null;
}
}
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