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| 1 | +// Copyright (c) 2011, Mike Samuel |
| 2 | +// All rights reserved. |
| 3 | +// |
| 4 | +// Redistribution and use in source and binary forms, with or without |
| 5 | +// modification, are permitted provided that the following conditions |
| 6 | +// are met: |
| 7 | +// |
| 8 | +// Redistributions of source code must retain the above copyright |
| 9 | +// notice, this list of conditions and the following disclaimer. |
| 10 | +// Redistributions in binary form must reproduce the above copyright |
| 11 | +// notice, this list of conditions and the following disclaimer in the |
| 12 | +// documentation and/or other materials provided with the distribution. |
| 13 | +// Neither the name of the OWASP nor the names of its contributors may |
| 14 | +// be used to endorse or promote products derived from this software |
| 15 | +// without specific prior written permission. |
| 16 | +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 19 | +// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 20 | +// COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | +// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 22 | +// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 23 | +// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| 24 | +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | +// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| 26 | +// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 27 | +// POSSIBILITY OF SUCH DAMAGE. |
| 28 | + |
| 29 | +package org.owasp.html; |
| 30 | + |
| 31 | +import com.google.common.collect.ImmutableList; |
| 32 | + |
| 33 | +import java.util.Collection; |
| 34 | + |
| 35 | +import javax.annotation.Nullable; |
| 36 | +import javax.annotation.concurrent.Immutable; |
| 37 | + |
| 38 | + |
| 39 | +@Immutable |
| 40 | +final class JoinedAttributePolicy implements AttributePolicy { |
| 41 | + final ImmutableList<AttributePolicy> policies; |
| 42 | + |
| 43 | + JoinedAttributePolicy(Collection<? extends AttributePolicy> policies) { |
| 44 | + this.policies = ImmutableList.copyOf(policies); |
| 45 | + } |
| 46 | + |
| 47 | + public @Nullable String apply( |
| 48 | + String elementName, String attributeName, @Nullable String rawValue) { |
| 49 | + String value = rawValue; |
| 50 | + for (AttributePolicy p : policies) { |
| 51 | + if (value == null) { break; } |
| 52 | + value = p.apply(elementName, attributeName, value); |
| 53 | + } |
| 54 | + return value; |
| 55 | + } |
| 56 | + |
| 57 | + @Override |
| 58 | + public boolean equals(Object o) { |
| 59 | + return o != null && this.getClass() == o.getClass() |
| 60 | + && policies.equals(((JoinedAttributePolicy) o).policies); |
| 61 | + } |
| 62 | + |
| 63 | + @Override |
| 64 | + public int hashCode() { |
| 65 | + return policies.hashCode(); |
| 66 | + } |
| 67 | +} |
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