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Code Issues Wiki Activity

Highlight range of element near cursor

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This commit is contained in:
Anton Leherbauer 2006-12-07 15:18:13 +00:00
parent a08c9254f8
commit 79b98179f3
1 changed files with 69 additions and 1 deletions
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70
core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java
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@ -163,6 +163,7 @@ import org.eclipse.cdt.core.model.ILanguage;
import org.eclipse.cdt.core.model.ISourceRange;
import org.eclipse.cdt.core.model.ISourceReference;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.core.model.IWorkingCopy;
import org.eclipse.cdt.refactoring.actions.CRefactoringActionGroup;
import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.cdt.ui.IWorkingCopyManager;
@ -1857,11 +1858,78 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IR
protected void selectionChanged() {
if (getSelectionProvider() == null)
return;
ISourceReference element= computeHighlightRangeSourceReference();
updateStatusLine();
synchronizeOutlinePage();
setSelection(element, false);
}
/**
* Computes and returns the source reference that includes the caret and
* serves as provider for the outline page selection and the editor range
* indication.
*
* @return the computed source reference
* @since 4.0
*/
protected ISourceReference computeHighlightRangeSourceReference() {
ISourceViewer sourceViewer= getSourceViewer();
if (sourceViewer == null)
return null;
StyledText styledText= sourceViewer.getTextWidget();
if (styledText == null)
return null;
int caret= 0;
if (sourceViewer instanceof ITextViewerExtension5) {
ITextViewerExtension5 extension= (ITextViewerExtension5)sourceViewer;
caret= extension.widgetOffset2ModelOffset(styledText.getCaretOffset());
} else {
int offset= sourceViewer.getVisibleRegion().getOffset();
caret= offset + styledText.getCaretOffset();
}
ICElement element= getElementAt(caret, false);
if ( !(element instanceof ISourceReference))
return null;
return (ISourceReference) element;
}
/**
* Returns the most narrow element including the given offset. If <code>reconcile</code>
* is <code>true</code> the editor's input element is reconciled in advance. If it is
* <code>false</code> this method only returns a result if the editor's input element
* does not need to be reconciled.
*
* @param offset the offset included by the retrieved element
* @param reconcile <code>true</code> if working copy should be reconciled
* @return the most narrow element which includes the given offset
*/
protected ICElement getElementAt(int offset, boolean reconcile) {
ITranslationUnit unit= (ITranslationUnit)getInputCElement();
if (unit != null) {
try {
if (reconcile && unit instanceof IWorkingCopy) {
synchronized (unit) {
((IWorkingCopy) unit).reconcile();
}
return unit.getElementAtOffset(offset);
} else if (unit.isConsistent()) {
return unit.getElementAtOffset(offset);
}
} catch (CModelException x) {
CUIPlugin.getDefault().log(x.getStatus());
// nothing found, be tolerant and go on
}
}
return null;
}
/**
* Synchronizes the outline view selection with the given element
* position in the editor.