X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.common%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fcommon%2FAdaptableHintContext.java;fp=bundles%2Forg.simantics.browsing.ui.common%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fcommon%2FAdaptableHintContext.java;h=bd7aa2790a303dcd491498abd1b1f93b551af15f;hp=0000000000000000000000000000000000000000;hb=6a6726b1ee9c2e78971d26b50f15b867cc7c5a02;hpb=93622c2baf328a90b122dd749b63676c72c839f5

diff --git a/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/AdaptableHintContext.java b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/AdaptableHintContext.java
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+++ b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/AdaptableHintContext.java
@@ -0,0 +1,225 @@
+/*******************************************************************************
+ * 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;
+	}
+
+}