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/*******************************************************************************
* Copyright (c) 2004 - 2006 University Of British Columbia and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* University Of British Columbia - initial API and implementation
*******************************************************************************/
package org.eclipse.mylar.internal.bugzilla.ui;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.mylar.internal.bugzilla.core.search.BugzillaContentProvider;
import org.eclipse.mylar.internal.bugzilla.core.search.BugzillaSearchResult;
import org.eclipse.mylar.internal.bugzilla.ui.search.BugzillaSearchResultView;
import org.eclipse.search.internal.ui.SearchPreferencePage;
/**
* This implementation of <code>BugzillaContentProvider</code> is used for the
* table view of a Bugzilla search result.
*/
public class BugzillaTableContentProvider extends BugzillaContentProvider implements IStructuredContentProvider {
/** The page the Bugzilla search results are displayed in */
private BugzillaSearchResultView bugPage;
/**
* Constructor
*
* @param page
* The page the Bugzilla search results are displayed in
*/
public BugzillaTableContentProvider(BugzillaSearchResultView page) {
bugPage = page;
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
if (newInput instanceof BugzillaSearchResult) {
bugResult = (BugzillaSearchResult) newInput;
}
}
@Override
public void elementsChanged(Object[] updatedElements) {
TableViewer viewer = getViewer();
boolean tableLimited = SearchPreferencePage.isTableLimited();
for (int i = 0; i < updatedElements.length; i++) {
if (bugResult.getMatchCount(updatedElements[i]) > 0) {
if (viewer.testFindItem(updatedElements[i]) != null)
viewer.update(updatedElements[i], null);
else {
if (!tableLimited || viewer.getTable().getItemCount() < SearchPreferencePage.getTableLimit())
viewer.add(updatedElements[i]);
}
} else
viewer.remove(updatedElements[i]);
}
}
/**
* Returns the viewer the bug results are displayed in.
*/
private TableViewer getViewer() {
return (TableViewer) bugPage.getViewer();
}
@Override
public void clear() {
getViewer().refresh();
}
/**
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
public Object[] getElements(Object inputElement) {
if (inputElement instanceof BugzillaSearchResult) {
Object[] elements = ((BugzillaSearchResult) inputElement).getElements();
int tableLimit = SearchPreferencePage.getTableLimit();
if (SearchPreferencePage.isTableLimited() && elements.length > tableLimit) {
Object[] shownElements = new Object[tableLimit];
System.arraycopy(elements, 0, shownElements, 0, tableLimit);
return shownElements;
}
return elements;
}
return EMPTY_ARR;
}
}
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