package org.eclipse.wst.sse.ui.internal.hyperlink;
import java.util.ResourceBundle;
import org.eclipse.core.runtime.SafeRunner;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.text.hyperlink.IHyperlink;
import org.eclipse.jface.text.hyperlink.IHyperlinkDetector;
import org.eclipse.jface.util.SafeRunnable;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.TextEditorAction;
/**
* Open hyperlink action
*/
public class OpenHyperlinkAction extends TextEditorAction {
private IHyperlinkDetector[] fHyperlinkDetectors;
private ITextViewer fTextViewer;
public OpenHyperlinkAction(ResourceBundle bundle, String prefix, ITextEditor editor, ITextViewer viewer) {
super(bundle, prefix, editor);
fTextViewer = viewer;
}
public void setHyperlinkDetectors(IHyperlinkDetector[] detectors) {
fHyperlinkDetectors = detectors;
}
public void run() {
if (fHyperlinkDetectors == null)
return;
ISelection selection = getTextEditor().getSelectionProvider().getSelection();
if (selection == null || !(selection instanceof ITextSelection)) {
return;
}
ITextSelection textSelection = (ITextSelection) selection;
final IRegion region = new Region(textSelection.getOffset(), textSelection.getLength());
IHyperlink hyperlink = null;
synchronized (fHyperlinkDetectors) {
for (int i = 0, length = fHyperlinkDetectors.length; i < length && hyperlink == null; i++) {
final IHyperlinkDetector detector = fHyperlinkDetectors[i];
if (detector == null)
continue;
/* The array is final, but its contents aren't */
final IHyperlink[][] hyperlinks = new IHyperlink[1][];
/*
* Detect from within a SafeRunnable since the list of
* detectors is extensible
*/
SafeRunnable detectorRunnable = new SafeRunnable() {
public void run() throws Exception {
hyperlinks[0] = detector.detectHyperlinks(fTextViewer, region, false);
}
};
SafeRunner.run(detectorRunnable);
if (hyperlinks[0] == null)
continue;
if (hyperlinks.length > 0)
hyperlink = hyperlinks[0][0];
}
}
if (hyperlink != null) {
/**
* Force the highlight range to change when the hyperlink is
* opened by altering the highlighted range beforehand.
*/
getTextEditor().setHighlightRange(Math.max(0, region.getOffset() - 1), 0, false);
hyperlink.open();
}
}
}