--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * 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:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.browsing.ui.common;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.eclipse.core.runtime.IAdaptable;
+import org.simantics.db.layer0.SelectionHints;
+import org.simantics.ui.selection.WorkbenchSelectionContentType;
+import org.simantics.ui.selection.WorkbenchSelectionElement;
+import org.simantics.utils.ObjectUtils;
+import org.simantics.utils.datastructures.hints.IHintContext;
+import org.simantics.utils.datastructures.hints.IHintListener;
+import org.simantics.utils.threads.IThreadWorkQueue;
+
+/**
+ * A custom internal hint context implementation that does not support
+ * notifications to achieve a more space-optimized implementation.
+ *
+ * @author Tuukka Lehtonen
+ */
+public class AdaptableHintContext implements IHintContext, IAdaptable, WorkbenchSelectionElement {
+
+ private final Key[] keysToTry;
+ protected final Map<Key, Object> hints;
+
+ public AdaptableHintContext() {
+ this(SelectionHints.STD_KEYS);
+ }
+
+ public AdaptableHintContext(Key... keys) {
+ this(new HashMap<Key, Object>(4), keys);
+ }
+
+ public AdaptableHintContext(Map<Key, Object> hints, Key... keys) {
+ if (hints == null)
+ throw new NullPointerException("null hints");
+ this.keysToTry = keys;
+ this.hints = hints;
+ }
+
+ @SuppressWarnings({ "unchecked", "rawtypes" })
+ @Override
+ public Object getAdapter(Class adapter) {
+ for (Key key : keysToTry) {
+ Object o = getHint(key);
+ if (adapter.isAssignableFrom(o.getClass()))
+ return o;
+ if (o instanceof IAdaptable) {
+ Object adapted = ((IAdaptable) o).getAdapter(adapter);
+ if (adapted != null) {
+ return adapted;
+ }
+ }
+ }
+ return null;
+ }
+
+ @Override
+ public String toString() {
+ return super.toString() + getHints();
+ }
+
+ @Override
+ public void clearWithoutNotification() {
+ hints.clear();
+ }
+
+ @Override
+ public boolean containsHint(Key key) {
+ return hints.get(key) != null;
+ }
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public <E> E getHint(Key key) {
+ if (key == null)
+ throw new IllegalArgumentException("key is null");
+ synchronized (this) {
+ return (E) hints.get(key);
+ }
+ }
+
+ @Override
+ public synchronized Map<Key, Object> getHints() {
+ return new HashMap<Key, Object>(hints);
+ }
+
+ @Override
+ public Map<Key, Object> getHintsUnsafe() {
+ return hints;
+ }
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public <E extends Key> Map<E, Object> getHintsOfClass(Class<E> clazz) {
+ Map<E, Object> result = null;
+ for (Entry<Key, Object> e : hints.entrySet()) {
+ Key key = e.getKey();
+ if (clazz.isAssignableFrom(key.getClass())) {
+ if (result == null)
+ result = new HashMap<E, Object>(4);
+ result.put((E) key, e.getValue());
+ }
+ }
+ return result;
+ }
+
+ @Override
+ public void setHint(Key key, Object value) {
+ if (key == null)
+ throw new IllegalArgumentException("key is null");
+ if (value == null)
+ throw new IllegalArgumentException("value is null");
+ if (!key.isValueAccepted(value))
+ throw new RuntimeException("Value \"" + value + "\" is not accepted with key " + key.getClass().getName());
+
+ synchronized (this) {
+ hints.put(key, value);
+ }
+ }
+
+ @Override
+ public void setHints(Map<Key, Object> hints) {
+ synchronized (this) {
+ for (Entry<Key, Object> e : hints.entrySet()) {
+ Key key = e.getKey();
+ Object value = e.getValue();
+ if (value == null)
+ throw new IllegalArgumentException("a value is null for key " + e.getKey());
+ this.hints.put(key, value);
+ }
+ }
+ }
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public <E> E removeHint(Key key) {
+ if (key == null)
+ throw new IllegalArgumentException("key is null");
+
+ Object oldValue = null;
+ synchronized (this) {
+ oldValue = hints.remove(key);
+ }
+ if (oldValue == null)
+ return null;
+ return (E) oldValue;
+ }
+
+ @Override
+ public void addHintListener(IHintListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public void removeHintListener(IHintListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public void addKeyHintListener(Key key, IHintListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public void removeKeyHintListener(Key key, IHintListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public void addHintListener(IThreadWorkQueue threadAccess, IHintListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public void removeHintListener(IThreadWorkQueue threadAccess, IHintListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public void addKeyHintListener(IThreadWorkQueue threadAccess, Key key, IHintListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public void removeKeyHintListener(IThreadWorkQueue threadAccess, Key key, IHintListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public int hashCode() {
+ return ((hints.hashCode() * 31) + Arrays.hashCode(keysToTry)) * 31;
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+ if (obj == null)
+ return false;
+ if (getClass() != obj.getClass())
+ return false;
+ AdaptableHintContext other = (AdaptableHintContext) obj;
+ return Arrays.equals(keysToTry, other.keysToTry) && ObjectUtils.objectEquals(hints, other.hints);
+ }
+
+ @Override
+ public <T> T getContent(WorkbenchSelectionContentType<T> contentType) {
+ return null;
+ }
+
+}
Code Review / simantics / platform.git / blobdiff