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Code Issues Wiki Activity

Performance tuning expanding large resource trees

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This commit is contained in:
Anton Leherbauer 2008-05-20 12:43:36 +00:00
parent 3007736997
commit 4177ecd4aa
1 changed files with 18 additions and 5 deletions
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23
core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/BaseCElementContentProvider.java
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@ -16,6 +16,7 @@ import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
@ -51,7 +52,7 @@ import org.eclipse.cdt.ui.NamespacesGrouping;
/**
* A base content provider for C elements. It provides access to the
* C element hierarchy without listening to changes in the C model.
* Use this class when you want to present the C elements
* Use this class when you want to present the C elements
* in a modal dialog or wizard.
* <p>
* The following C element hierarchy is surfaced by this content provider:
@ -111,7 +112,7 @@ public class BaseCElementContentProvider implements ITreeContentProvider {
}
/**
* Returns whether the members are provided
* Returns whether the members are provided
* from a working copy a compilation unit.
*/
public boolean getProvideWorkingCopy() {
@ -243,7 +244,19 @@ public class BaseCElementContentProvider implements ITreeContentProvider {
if (!cp.getProject().isOpen()) {
return false;
}
return true;
return true;
}
if (element instanceof ICContainer) {
ICContainer container= (ICContainer)element;
IResource resource= container.getResource();
if (resource instanceof IContainer) {
try {
return ((IContainer)resource).members().length > 0;
} catch (CoreException exc) {
return false;
}
}
}
if (element instanceof IParent) {
@ -370,7 +383,7 @@ public class BaseCElementContentProvider implements ITreeContentProvider {
children = list.toArray();
}
if (fNamespacesGrouping) {
// check if there is another namespace with the same name for the same parent
// check if there is another namespace with the same name for the same parent
List<Object> list = new ArrayList<Object>(children.length);
Map<String, NamespacesGrouping> map = new HashMap<String, NamespacesGrouping>();
for (int i = 0; i < children.length; ++i) {
@ -573,7 +586,7 @@ public class BaseCElementContentProvider implements ITreeContentProvider {
int a2Len = a2.length;
Object[] res = new Object[a1Len + a2Len];
System.arraycopy(a1, 0, res, 0, a1Len);
System.arraycopy(a2, 0, res, a1Len, a2Len);
System.arraycopy(a2, 0, res, a1Len, a2Len);
return res;
}