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[scaleablity] don't involve filter when testing for expandablity.

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This commit is contained in:
David Inglis 2004-05-31 16:18:00 +00:00
parent 0209657630
commit 34f6b89386
1 changed files with 20 additions and 5 deletions
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25
core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/util/ProblemTreeViewer.java
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@ -7,17 +7,19 @@ package org.eclipse.cdt.internal.ui.util;
import java.util.Set; import java.util.Set;
import org.eclipse.cdt.core.model.ICProject;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Item; import org.eclipse.swt.widgets.Item;
import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.Widget; import org.eclipse.swt.widgets.Widget;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.jface.viewers.TreeViewer;
/** /**
* Extends a TreeViewer to allow more performance when showing error ticks. * Extends a TreeViewer to allow more performance when showing error ticks.
@ -133,5 +135,18 @@ public class ProblemTreeViewer extends TreeViewer implements IProblemChangedList
super.handleInvalidSelection(invalidSelection, newSelection); super.handleInvalidSelection(invalidSelection, newSelection);
} }
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.AbstractTreeViewer#isExpandable(java.lang.Object)
*/
public boolean isExpandable(Object element) {
ITreeContentProvider cp = (ITreeContentProvider) getContentProvider();
if (cp == null)
return false;
// since AbstractTreeViewer will run filteres here on element children this will cause binary search threads and TU parsering
// to be started for each project/file tested for expandablity, this can be expensive if lots of project exists in workspace
// or lots of TUs exist in one folder so lets skip it....
return cp.hasChildren(element);
}
} }