| /* |
| * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.awt.X11; |
| |
| import java.util.*; |
| |
| /** |
| * Helper class to ease the work with the lists of atoms. |
| */ |
| class XAtomList { |
| Set<XAtom> atoms = new HashSet<XAtom>(); |
| |
| /** |
| * Creates empty list. |
| */ |
| public XAtomList() { |
| } |
| |
| /** |
| * Creates instance of XAtomList and initializes it with |
| * the contents pointer by {@code data}. |
| * Uses default display to initialize atoms. |
| */ |
| public XAtomList(long data, int count) { |
| init(data, count); |
| } |
| private void init(long data, int count) { |
| for (int i = 0; i < count; i++) { |
| add(new XAtom(XToolkit.getDisplay(), XAtom.getAtom(data+count*XAtom.getAtomSize()))); |
| } |
| } |
| |
| /** |
| * Creates instance of XAtomList and initializes it with |
| * the arrays of atoms. Array can contain null atoms. |
| */ |
| public XAtomList(XAtom[] atoms) { |
| init(atoms); |
| } |
| private void init(XAtom[] atoms) { |
| for (int i = 0; i < atoms.length; i++) { |
| add(atoms[i]); |
| } |
| } |
| |
| /** |
| * Returns contents of the list as array of atoms. |
| */ |
| public XAtom[] getAtoms() { |
| XAtom[] res = new XAtom[size()]; |
| Iterator<XAtom> iter = atoms.iterator(); |
| int i = 0; |
| while (iter.hasNext()) { |
| res[i++] = iter.next(); |
| } |
| return res; |
| } |
| |
| /** |
| * Returns contents of the list as pointer to native data |
| * The size of the native data is size of the list multiplied by |
| * size of the Atom type on the platform. Caller is responsible for |
| * freeing the data by Unsafe.freeMemory when it is no longer needed. |
| */ |
| public long getAtomsData() { |
| return XAtom.toData(getAtoms()); |
| } |
| |
| /** |
| * Returns true if this list contains the atom {@code atom} |
| */ |
| public boolean contains(XAtom atom) { |
| return atoms.contains(atom); |
| } |
| |
| /** |
| * Add atom to the list. Does nothing if list already contains this atom. |
| */ |
| public void add(XAtom atom) { |
| atoms.add(atom); |
| } |
| |
| /** |
| * Removes atom from the list. Does nothing if arrays doesn't conaint this atom. |
| */ |
| public void remove(XAtom atom) { |
| atoms.remove(atom); |
| } |
| |
| |
| /** |
| * Returns size of the list |
| */ |
| public int size() { |
| return atoms.size(); |
| } |
| |
| /** |
| * Returns a subset of a list which is intersection of this set and set build by mapping {@code mask} in |
| * {@code mapping}. |
| */ |
| public XAtomList subset(int mask, Map<Integer, XAtom> mapping) { |
| XAtomList res = new XAtomList(); |
| Iterator<Integer> iter = mapping.keySet().iterator(); |
| while (iter.hasNext()) { |
| Integer bits = iter.next(); |
| if ( (mask & bits.intValue()) == bits.intValue() ) { |
| XAtom atom = mapping.get(bits); |
| if (contains(atom)) { |
| res.add(atom); |
| } |
| } |
| } |
| return res; |
| } |
| |
| /** |
| * Returns iterator for items. |
| */ |
| public Iterator<XAtom> iterator() { |
| return atoms.iterator(); |
| } |
| |
| /** |
| * Merges without duplicates all the atoms from another list |
| */ |
| public void addAll(XAtomList atoms) { |
| Iterator<XAtom> iter = atoms.iterator(); |
| while(iter.hasNext()) { |
| add(iter.next()); |
| } |
| } |
| |
| public String toString() { |
| StringBuffer buf = new StringBuffer(); |
| buf.append("["); |
| Iterator<XAtom> iter = atoms.iterator(); |
| while (iter.hasNext()) { |
| buf.append(iter.next().toString()); |
| if (iter.hasNext()) { |
| buf.append(", "); |
| } |
| } |
| buf.append("]"); |
| return buf.toString(); |
| } |
| } |