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/*******************************************************************************
* Copyright (c) 2008 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.p2.ui.actions;
import org.eclipse.equinox.p2.query.QueryUtil;
import org.eclipse.equinox.internal.p2.ui.ProvUI;
import org.eclipse.equinox.internal.p2.ui.model.IIUElement;
import org.eclipse.equinox.internal.p2.ui.model.InstalledIUElement;
import org.eclipse.equinox.p2.engine.IProfile;
import org.eclipse.equinox.p2.metadata.IInstallableUnit;
import org.eclipse.equinox.p2.ui.ProvisioningUI;
import org.eclipse.jface.viewers.ISelectionProvider;
/**
*
* Abstract class that implements the enablement rules for actions that
* affect IU's already in a profile. The action only enables when all of the
* IU's involved are top level IU's from the same profile.
*
* @since 3.5
*
*/
public abstract class ExistingIUInProfileAction extends ProfileModificationAction {
public ExistingIUInProfileAction(ProvisioningUI ui, String label, ISelectionProvider selectionProvider, String profileId) {
super(ui, label, selectionProvider, profileId);
}
protected boolean isEnabledFor(Object[] selectionArray) {
Object parent = null;
// We don't want to prompt for a profile during validation,
// so we only consider the profile id that was set, or the profile
// referred to by the element itself..
IProfile profile = getProfile();
if (selectionArray.length > 0) {
for (int i = 0; i < selectionArray.length; i++) {
if (selectionArray[i] instanceof InstalledIUElement) {
InstalledIUElement element = (InstalledIUElement) selectionArray[i];
// If the parents are different, then they are either from
// different profiles or are nested in different parts of the tree.
// Either way, this makes the selection invalid.
if (parent == null) {
parent = element.getParent(element);
} else if (parent != element.getParent(element)) {
return false;
}
// Now consider the validity of the element on its own
if (!isSelectable(element.getIU(), profile))
return false;
} else {
IInstallableUnit iu = ProvUI.getAdapter(selectionArray[i], IInstallableUnit.class);
if (iu == null || !isSelectable(iu))
return false;
}
}
return true;
}
return false;
}
protected boolean isSelectable(IIUElement element) {
if (!super.isSelectable(element))
return false;
Object parent = element.getParent(element);
if (parent != null) {
IProfile profile = ProvUI.getAdapter(parent, IProfile.class);
if (profile != null)
return isSelectable(element.getIU(), profile);
}
return false;
}
protected boolean isSelectable(IInstallableUnit iu) {
if (!super.isSelectable(iu))
return false;
return isSelectable(iu, getProfile());
}
private boolean isSelectable(IInstallableUnit iu, IProfile profile) {
int lock = getLock(profile, iu);
if ((lock & getLockConstant()) == getLockConstant())
return false;
return !profile.query(QueryUtil.createPipeQuery(QueryUtil.createIUQuery(iu), getPolicy().getVisibleInstalledIUQuery()), null).isEmpty();
}
protected abstract int getLockConstant();
}
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