| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.safecss.shared; |
| |
| /** |
| * A string wrapped as an object of type {@link SafeStyles}. |
| * |
| * <p> |
| * This class is package-private and intended for internal use by the |
| * {@link com.google.gwt.safecss} package. |
| * |
| * <p> |
| * All implementors must implement .equals and .hashCode so that they operate |
| * just like String.equals() and String.hashCode(). |
| */ |
| class SafeStylesString implements SafeStyles { |
| |
| private String css; |
| |
| /** |
| * Constructs a {@link SafeStylesString} from a string. Callers are |
| * responsible for ensuring that the string passed as the argument to this |
| * constructor satisfies the constraints of the contract imposed by the |
| * {@link SafeStyles} interface. |
| * |
| * @param css the string to be wrapped as a {@link SafeStyles} |
| */ |
| SafeStylesString(String css) { |
| SafeStylesUtils.verifySafeStylesConstraints(css); |
| this.css = css; |
| } |
| |
| /** |
| * No-arg constructor for compatibility with GWT serialization. |
| */ |
| @SuppressWarnings("unused") |
| private SafeStylesString() { |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public String asString() { |
| return css; |
| } |
| |
| /** |
| * Compares this string to the specified object. |
| */ |
| @Override |
| public boolean equals(Object obj) { |
| if (!(obj instanceof SafeStyles)) { |
| return false; |
| } |
| return css.equals(((SafeStyles) obj).asString()); |
| } |
| |
| /** |
| * Returns a hash code for this string. |
| */ |
| @Override |
| public int hashCode() { |
| return css.hashCode(); |
| } |
| } |