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Fix for 174568, navigation of namespace members.

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This commit is contained in:
Markus Schorn 2007-05-18 10:17:48 +00:00
parent ed4ed2309a
commit 0bcbbd2a29
1 changed files with 57 additions and 83 deletions
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140
core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/actions/GoToNextPreviousMemberAction.java
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@ -8,12 +8,11 @@
* Contributors:
* P.Tomaszewski
* Anton Leherbauer (Wind River Systems)
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.actions;
import java.util.LinkedList;
import java.util.List;
import java.util.ResourceBundle;
import org.eclipse.jface.text.ITextSelection;
@ -23,6 +22,8 @@ import org.eclipse.ui.texteditor.TextEditorAction;
import org.eclipse.cdt.core.model.CModelException;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.core.model.IParent;
import org.eclipse.cdt.core.model.ISourceRange;
import org.eclipse.cdt.core.model.ISourceReference;
import org.eclipse.cdt.core.model.IWorkingCopy;
import org.eclipse.cdt.ui.CUIPlugin;
@ -89,91 +90,64 @@ public class GoToNextPreviousMemberAction extends TextEditorAction {
return;
}
try {
final ICElement[] elements = workingCopy.getChildren();
final Integer[] elementOffsets = createSourceIndexes(elements);
final ICElement selectedElement = workingCopy.getElementAtOffset(selection.getOffset());
if (selectedElement != null && selectedElement instanceof ISourceReference) {
final int offset = ((ISourceReference) selectedElement).getSourceRange().getStartPos();
final int offsetToSelect = fGotoNext ? getNextOffset(elementOffsets, offset) : getPreviousOffset(elementOffsets, offset);
editor.selectAndReveal(offsetToSelect, 0);
} else if (selectedElement == null) {
final int offset = selection.getOffset();
final int offsetToSelect = fGotoNext ? getNextOffset(elementOffsets, offset) : getPreviousOffset(elementOffsets, offset);
editor.selectAndReveal(offsetToSelect, 0);
} else {
//System.out.println("Selected element class:" + selectedElement.getClass()); //$NON-NLS-1$
}
ISourceReference next= fGotoNext ?
getNextElement(workingCopy, selection.getOffset()) :
getPrevElement(workingCopy, selection.getOffset());
if (next != null) {
editor.selectAndReveal(next.getSourceRange().getIdStartPos(), 0);
}
} catch (CModelException e) {
CUIPlugin.getDefault().log(e);
//System.out.println("Exception:" + e.getMessage()); //$NON-NLS-1$
}
}
/**
* Searches for next offset within array of offsets.
* @param offsets Offsets to search.
* @param actualOffset Actual offsets.
* @return Found offset or actual.
*/
private static int getNextOffset(Integer[] offsets, int actualOffset) {
if (offsets.length > 0) {
if (actualOffset < offsets[0].intValue())
{
return offsets[0].intValue();
}
}
for (int i = 0; i < offsets.length - 1; i++) {
if (offsets[i].intValue() == actualOffset) {
return offsets[i + 1].intValue();
} else if ((actualOffset > offsets[i].intValue())
&& (actualOffset < offsets[i + 1].intValue())) {
return offsets[i + 1].intValue();
}
}
return actualOffset;
}
private ISourceReference getNextElement(IParent parent, int offset) throws CModelException {
ICElement[] children= parent.getChildren();
for (int i = 0; i < children.length; i++) {
ICElement element = children[i];
if (element instanceof ISourceReference) {
final ISourceReference candidate1= (ISourceReference) element;
final ISourceRange range= candidate1.getSourceRange();
final int idpos1= range.getIdStartPos();
if (element instanceof IParent && range.getStartPos() + range.getLength() > offset) {
ISourceReference candidate2= getNextElement((IParent) element, offset);
if (candidate2 != null) {
final int idpos2= candidate2.getSourceRange().getIdStartPos();
if (idpos1 <= offset || idpos1 > idpos2) {
return candidate2;
}
}
}
if (idpos1 > offset) {
return candidate1;
}
}
}
return null;
}
/**
* Searches for previous offset within array of offsets.
* @param offsets Offsets to search.
* @param actualOffset Actual offset.
* @return Found offset or actual.
*/
private static int getPreviousOffset(Integer[] offsets, int actualOffset) {
if (offsets.length > 0) {
if (actualOffset > offsets[offsets.length - 1].intValue())
{
return offsets[offsets.length - 1].intValue();
}
}
for (int i = 1; i < offsets.length; i++) {
if (offsets[i].intValue() == actualOffset) {
return offsets[i - 1].intValue();
} else if ((actualOffset > offsets[i - 1].intValue())
&& (actualOffset < offsets[i].intValue())) {
return offsets[i - 1].intValue();
}
}
return actualOffset;
}
/**
* Creates array in indexes from ICElements.
* @param elements Elements to retrieve needed data.
* @return indexes.
* @throws CModelException Thrown if source range not found.
*/
private static Integer[] createSourceIndexes(ICElement[] elements) throws CModelException
{
final List indexesList = new LinkedList();
for (int i = 0; i < elements.length; i++) {
if (elements[i] instanceof ISourceReference) {
indexesList.add(new Integer(((ISourceReference) elements[i]).getSourceRange().getStartPos()));
}
}
//System.out.println("Indexes list:" + indexesList); //$NON-NLS-1$
final Integer[] indexes = new Integer[indexesList.size()];
indexesList.toArray(indexes);
return indexes;
}
private ISourceReference getPrevElement(IParent parent, int offset) throws CModelException {
ICElement[] children= parent.getChildren();
for (int i= children.length-1; i >= 0; i--) {
ICElement element = children[i];
if (element instanceof ISourceReference) {
final ISourceReference candidate1= (ISourceReference) element;
final ISourceRange range= candidate1.getSourceRange();
final int idpos1= range.getIdStartPos();
if (element instanceof IParent && range.getStartPos() < offset) {
ISourceReference candidate2= getPrevElement((IParent) element, offset);
if (candidate2 != null) {
final int idpos2= candidate2.getSourceRange().getIdStartPos();
if (idpos1 >= offset || idpos1 < idpos2) {
return candidate2;
}
}
}
if (idpos1 < offset) {
return candidate1;
}
}
}
return null;
}
}