| /*=============================================================================# |
| # Copyright (c) 2009, 2020 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.ltk.model.core.impl; |
| |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.core.runtime.jobs.Job; |
| |
| import org.eclipse.statet.jcommons.collections.CopyOnWriteIdentityListSet; |
| import org.eclipse.statet.jcommons.collections.ImCollections; |
| import org.eclipse.statet.jcommons.collections.ImIdentityList; |
| import org.eclipse.statet.jcommons.collections.ImSet; |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| import org.eclipse.statet.jcommons.lang.Nullable; |
| |
| import org.eclipse.statet.ltk.core.Ltk; |
| import org.eclipse.statet.ltk.core.WorkingContext; |
| import org.eclipse.statet.ltk.model.core.ElementChangedListener; |
| import org.eclipse.statet.ltk.model.core.LtkModels; |
| import org.eclipse.statet.ltk.model.core.ModelManager; |
| import org.eclipse.statet.ltk.model.core.element.SourceUnit; |
| |
| |
| @NonNullByDefault |
| public abstract class AbstractModelManager implements ModelManager { |
| |
| |
| protected static class ContextItem { |
| |
| public final WorkingContext context; |
| |
| public final CopyOnWriteIdentityListSet<ElementChangedListener> listeners= new CopyOnWriteIdentityListSet<>(); |
| |
| |
| protected ContextItem(final WorkingContext context) { |
| this.context= context; |
| } |
| |
| |
| @Override |
| public final int hashCode() { |
| return this.context.hashCode(); |
| } |
| |
| @Override |
| public final boolean equals(final @Nullable Object obj) { |
| return (this == obj); |
| } |
| |
| } |
| |
| private static final ImIdentityList<ElementChangedListener> NO_LISTENERS= ImCollections.emptyIdentityList(); |
| |
| private class RefreshJob extends Job { |
| |
| |
| private final List<SourceUnit> list; |
| |
| private final int flags; |
| |
| |
| public RefreshJob(final WorkingContext context, final int flags) { |
| super("Model Refresh"); //$NON-NLS-1$ |
| setUser(false); |
| setSystem(true); |
| setPriority(DECORATE); |
| |
| this.list= LtkModels.getSourceUnitManager().getOpenSourceUnits(AbstractModelManager.this.typeId, context); |
| this.flags= flags; |
| } |
| |
| @Override |
| protected IStatus run(final IProgressMonitor monitor) { |
| for (final SourceUnit su : this.list) { |
| su.getModelInfo(null, this.flags, monitor); |
| } |
| return Status.OK_STATUS; |
| } |
| |
| } |
| |
| |
| private final String typeId; |
| |
| private final CopyOnWriteIdentityListSet<ContextItem> contexts= new CopyOnWriteIdentityListSet<>(); |
| |
| |
| public AbstractModelManager(final String typeId) { |
| this.typeId= typeId; |
| |
| for (final WorkingContext context : getInitialContexts()) { |
| getContextItemCreate(context); |
| } |
| } |
| |
| protected ImSet<WorkingContext> getInitialContexts() { |
| return ImCollections.newIdentitySet(Ltk.PERSISTENCE_CONTEXT, Ltk.EDITOR_CONTEXT); |
| } |
| |
| |
| public String getModelTypeId() { |
| return this.typeId; |
| } |
| |
| protected @Nullable ContextItem getContextItem(final WorkingContext context) { |
| final ImIdentityList<ContextItem> contextItems= this.contexts.toList(); |
| for (final ContextItem contextItem : contextItems) { |
| if (contextItem.context == context) { |
| return contextItem; |
| } |
| } |
| return null; |
| } |
| |
| protected ContextItem getContextItemCreate(final WorkingContext context) { |
| while (true) { |
| final ImIdentityList<ContextItem> contextItems= this.contexts.toList(); |
| for (final ContextItem contextItem : contextItems) { |
| if (contextItem.context == context) { |
| return contextItem; |
| } |
| } |
| synchronized (this.contexts) { |
| if (contextItems == this.contexts.toList()) { |
| final ContextItem item= doCreateContextItem(context); |
| this.contexts.add(item); |
| return item; |
| } |
| } |
| } |
| } |
| |
| protected ContextItem doCreateContextItem(final WorkingContext context) { |
| return new ContextItem(context); |
| } |
| |
| @Override |
| public void addElementChangedListener(final ElementChangedListener listener, |
| final WorkingContext context) { |
| final ContextItem contextItem= getContextItemCreate(context); |
| contextItem.listeners.add(listener); |
| } |
| |
| @Override |
| public void removeElementChangedListener(final ElementChangedListener listener, |
| final WorkingContext context) { |
| final ContextItem contextItem= getContextItem(context); |
| if (contextItem != null) { |
| contextItem.listeners.remove(listener); |
| } |
| } |
| |
| protected ImIdentityList<ElementChangedListener> getElementChangedListeners(final WorkingContext context) { |
| final ContextItem contextItem= getContextItem(context); |
| if (contextItem == null) { |
| return NO_LISTENERS; |
| } |
| return contextItem.listeners.toList(); |
| } |
| |
| /** |
| * Refresh reuses existing ast |
| */ |
| @Override |
| public void refresh(final WorkingContext context) { |
| new RefreshJob(context, (MODEL_DEPENDENCIES | RECONCILE)).schedule(); |
| } |
| |
| @Override |
| public void registerDependentUnit(final SourceUnit su) { |
| } |
| |
| @Override |
| public void deregisterDependentUnit(final SourceUnit su) { |
| } |
| |
| } |