-/*******************************************************************************\r
- * Copyright (c) 2007- VTT Technical Research Centre of Finland.\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.proconf.g3d.common;\r
-\r
-import java.util.ArrayList;\r
-import java.util.Arrays;\r
-import java.util.Iterator;\r
-import java.util.List;\r
-\r
-import org.eclipse.jface.viewers.IStructuredSelection;\r
-import org.simantics.db.Resource;\r
-\r
-\r
-/**\r
- * StructuredSelection that contains ResourceSelections\r
- * \r
- * @author Marko Luukkainen\r
- * @author Tuukka Lehtonen\r
- */\r
-public class StructuredResourceSelection implements IStructuredSelection {\r
- \r
- public static final StructuredResourceSelection EMPTY = new StructuredResourceSelection() {\r
- // Create an empty fixed size List to ensure the list is not modified.\r
- private List<Resource> empty = Arrays.asList(); \r
- \r
- public void add(Resource rs) {\r
- throw new UnsupportedOperationException("BUG: attempted to modify StructuredResourceSelection.EMPTY");\r
- }\r
- public List<Resource> getSelectionList() {\r
- return empty;\r
- }\r
- };\r
-\r
- private List<Resource> selections;\r
- \r
- /**\r
- * Creates a new selection that doesn't contain any items\r
- */\r
- public StructuredResourceSelection() {\r
- }\r
-\r
- public StructuredResourceSelection(Resource rs) {\r
- getSelectionList().add(rs);\r
- }\r
-\r
- public StructuredResourceSelection(Resource... rss) {\r
- List<Resource> s = getSelectionList();\r
- for (Resource rs : rss)\r
- s.add(rs);\r
- }\r
-\r
- public void add(Resource rs) {\r
- getSelectionList().add(rs);\r
- }\r
-\r
- public List<Resource> getSelectionList() {\r
- if (selections == null) {\r
- selections = new ArrayList<Resource>();\r
- }\r
- return selections;\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see org.eclipse.jface.viewers.ISelection#isEmpty()\r
- */\r
- public boolean isEmpty() {\r
- return selections == null || selections.isEmpty();\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see org.eclipse.jface.viewers.IStructuredSelection#getFirstElement()\r
- */\r
- public Object getFirstElement() {\r
- if (!isEmpty())\r
- return selections.get(0);\r
- return null;\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see org.eclipse.jface.viewers.IStructuredSelection#iterator()\r
- */\r
- public Iterator<Resource> iterator() {\r
- return getSelectionList().iterator();\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see org.eclipse.jface.viewers.IStructuredSelection#size()\r
- */\r
- public int size() {\r
- return selections == null ? 0 : selections.size();\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see org.eclipse.jface.viewers.IStructuredSelection#toArray()\r
- */\r
- public Object[] toArray() {\r
- return selections == null ? new Object[0] : selections.toArray();\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see org.eclipse.jface.viewers.IStructuredSelection#toList()\r
- */\r
- public List<Resource> toList() {\r
- return selections == null ? Arrays.asList(new Resource[0]) : selections;\r
- }\r
-\r
- /**\r
- * Returns whether this structured selection is equal to the given object.\r
- * Two structured selections are equal iff they contain the same elements\r
- * in the same order.\r
- *\r
- * @param o the other object\r
- * @return <code>true</code> if they are equal, and <code>false</code> otherwise\r
- */\r
- public boolean equals(Object o) {\r
- if (this == o) {\r
- return true;\r
- }\r
- // null and other classes\r
- if (!(o instanceof StructuredResourceSelection)) {\r
- return false;\r
- }\r
- StructuredResourceSelection other = (StructuredResourceSelection) o;\r
-\r
- // either or both empty?\r
- if (isEmpty()) {\r
- return other.isEmpty();\r
- }\r
- if (other.isEmpty()) {\r
- return false;\r
- }\r
-\r
- // check size\r
- if (size() != other.size())\r
- return false;\r
- \r
- // element comparison\r
- Iterator<Resource> it = iterator();\r
- Iterator<Resource> otherIt = other.iterator();\r
- while (it.hasNext()) {\r
- if (!it.next().equals(otherIt.next()))\r
- return false;\r
- }\r
- \r
- return true;\r
- }\r
- \r
- @Override\r
- public String toString() {\r
- return Arrays.toString(getSelectionList().toArray());\r
- }\r
- \r
-}\r