--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.browsing.ui.swt;\r
+\r
+import java.util.Arrays;\r
+import java.util.HashMap;\r
+import java.util.Map;\r
+import java.util.Map.Entry;\r
+\r
+import org.eclipse.core.runtime.IAdaptable;\r
+import org.simantics.db.layer0.SelectionHints;\r
+import org.simantics.ui.selection.WorkbenchSelectionContentType;\r
+import org.simantics.ui.selection.WorkbenchSelectionElement;\r
+import org.simantics.utils.ObjectUtils;\r
+import org.simantics.utils.datastructures.hints.IHintContext;\r
+import org.simantics.utils.datastructures.hints.IHintListener;\r
+import org.simantics.utils.threads.IThreadWorkQueue;\r
+\r
+/**\r
+ * A custom internal hint context implementation that does not support\r
+ * notifications to achieve a more space-optimized implementation.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class AdaptableHintContext implements IHintContext, IAdaptable, WorkbenchSelectionElement {\r
+\r
+ private final Key[] keysToTry;\r
+ protected final Map<Key, Object> hints;\r
+\r
+ public AdaptableHintContext() {\r
+ this(SelectionHints.STD_KEYS);\r
+ }\r
+\r
+ public AdaptableHintContext(Key... keys) {\r
+ this(new HashMap<Key, Object>(4), keys);\r
+ }\r
+\r
+ public AdaptableHintContext(Map<Key, Object> hints, Key... keys) {\r
+ if (hints == null)\r
+ throw new NullPointerException("null hints");\r
+ this.keysToTry = keys;\r
+ this.hints = hints;\r
+ }\r
+\r
+ @SuppressWarnings({ "unchecked", "rawtypes" })\r
+ @Override\r
+ public Object getAdapter(Class adapter) {\r
+ for (Key key : keysToTry) {\r
+ Object o = getHint(key);\r
+ if (adapter.isAssignableFrom(o.getClass()))\r
+ return o;\r
+ if (o instanceof IAdaptable) {\r
+ Object adapted = ((IAdaptable) o).getAdapter(adapter);\r
+ if (adapted != null) {\r
+ return adapted;\r
+ }\r
+ }\r
+ }\r
+ return null;\r
+ }\r
+\r
+ @Override\r
+ public String toString() {\r
+ return super.toString() + getHints();\r
+ }\r
+\r
+ @Override\r
+ public void clearWithoutNotification() {\r
+ hints.clear();\r
+ }\r
+\r
+ @Override\r
+ public boolean containsHint(Key key) {\r
+ return hints.get(key) != null;\r
+ }\r
+\r
+ @SuppressWarnings("unchecked")\r
+ @Override\r
+ public <E> E getHint(Key key) {\r
+ if (key == null)\r
+ throw new IllegalArgumentException("key is null");\r
+ synchronized (this) {\r
+ return (E) hints.get(key);\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public synchronized Map<Key, Object> getHints() {\r
+ return new HashMap<Key, Object>(hints);\r
+ }\r
+\r
+ @Override\r
+ public Map<Key, Object> getHintsUnsafe() {\r
+ return hints;\r
+ }\r
+\r
+ @SuppressWarnings("unchecked")\r
+ @Override\r
+ public <E extends Key> Map<E, Object> getHintsOfClass(Class<E> clazz) {\r
+ Map<E, Object> result = null;\r
+ for (Entry<Key, Object> e : hints.entrySet()) {\r
+ Key key = e.getKey();\r
+ if (clazz.isAssignableFrom(key.getClass())) {\r
+ if (result == null)\r
+ result = new HashMap<E, Object>(4);\r
+ result.put((E) key, e.getValue());\r
+ }\r
+ }\r
+ return result;\r
+ }\r
+\r
+ @Override\r
+ public void setHint(Key key, Object value) {\r
+ if (key == null)\r
+ throw new IllegalArgumentException("key is null");\r
+ if (value == null)\r
+ throw new IllegalArgumentException("value is null");\r
+ if (!key.isValueAccepted(value))\r
+ throw new RuntimeException("Value \"" + value + "\" is not accepted with key " + key.getClass().getName());\r
+\r
+ synchronized (this) {\r
+ hints.put(key, value);\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public void setHints(Map<Key, Object> hints) {\r
+ synchronized (this) {\r
+ for (Entry<Key, Object> e : hints.entrySet()) {\r
+ Key key = e.getKey();\r
+ Object value = e.getValue();\r
+ if (value == null)\r
+ throw new IllegalArgumentException("a value is null for key " + e.getKey());\r
+ this.hints.put(key, value);\r
+ }\r
+ }\r
+ }\r
+\r
+ @SuppressWarnings("unchecked")\r
+ @Override\r
+ public <E> E removeHint(Key key) {\r
+ if (key == null)\r
+ throw new IllegalArgumentException("key is null");\r
+\r
+ Object oldValue = null;\r
+ synchronized (this) {\r
+ oldValue = hints.remove(key);\r
+ }\r
+ if (oldValue == null)\r
+ return null;\r
+ return (E) oldValue;\r
+ }\r
+\r
+ @Override\r
+ public void addHintListener(IHintListener listener) {\r
+ throw new UnsupportedOperationException();\r
+ }\r
+\r
+ @Override\r
+ public void removeHintListener(IHintListener listener) {\r
+ throw new UnsupportedOperationException();\r
+ }\r
+\r
+ @Override\r
+ public void addKeyHintListener(Key key, IHintListener listener) {\r
+ throw new UnsupportedOperationException();\r
+ }\r
+\r
+ @Override\r
+ public void removeKeyHintListener(Key key, IHintListener listener) {\r
+ throw new UnsupportedOperationException();\r
+ }\r
+\r
+ @Override\r
+ public void addHintListener(IThreadWorkQueue threadAccess, IHintListener listener) {\r
+ throw new UnsupportedOperationException();\r
+ }\r
+\r
+ @Override\r
+ public void removeHintListener(IThreadWorkQueue threadAccess, IHintListener listener) {\r
+ throw new UnsupportedOperationException();\r
+ }\r
+\r
+ @Override\r
+ public void addKeyHintListener(IThreadWorkQueue threadAccess, Key key, IHintListener listener) {\r
+ throw new UnsupportedOperationException();\r
+ }\r
+\r
+ @Override\r
+ public void removeKeyHintListener(IThreadWorkQueue threadAccess, Key key, IHintListener listener) {\r
+ throw new UnsupportedOperationException();\r
+ }\r
+\r
+ @Override\r
+ public int hashCode() {\r
+ return ((hints.hashCode() * 31) + Arrays.hashCode(keysToTry)) * 31;\r
+ }\r
+\r
+ @Override\r
+ public boolean equals(Object obj) {\r
+ if (this == obj)\r
+ return true;\r
+ if (obj == null)\r
+ return false;\r
+ if (getClass() != obj.getClass())\r
+ return false;\r
+ AdaptableHintContext other = (AdaptableHintContext) obj;\r
+ return Arrays.equals(keysToTry, other.keysToTry) && ObjectUtils.objectEquals(hints, other.hints);\r
+ }\r
+\r
+ @Override\r
+ public <T> T getContent(WorkbenchSelectionContentType<T> contentType) {\r
+ return null;\r
+ }\r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff