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/*
* Copyright (c) 2002-2021 Gargoyle Software 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
* https://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.gargoylesoftware.htmlunit.javascript.host;
import static com.gargoylesoftware.htmlunit.BrowserVersionFeatures.JS_STORAGE_GET_FROM_ITEMS;
import static com.gargoylesoftware.htmlunit.BrowserVersionFeatures.JS_STORAGE_PRESERVED_INCLUDED;
import static com.gargoylesoftware.htmlunit.javascript.configuration.SupportedBrowser.CHROME;
import static com.gargoylesoftware.htmlunit.javascript.configuration.SupportedBrowser.EDGE;
import static com.gargoylesoftware.htmlunit.javascript.configuration.SupportedBrowser.FF;
import static com.gargoylesoftware.htmlunit.javascript.configuration.SupportedBrowser.FF78;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import com.gargoylesoftware.htmlunit.javascript.SimpleScriptable;
import com.gargoylesoftware.htmlunit.javascript.configuration.JsxClass;
import com.gargoylesoftware.htmlunit.javascript.configuration.JsxConstructor;
import com.gargoylesoftware.htmlunit.javascript.configuration.JsxFunction;
import com.gargoylesoftware.htmlunit.javascript.configuration.JsxGetter;
import net.sourceforge.htmlunit.corejs.javascript.Context;
import net.sourceforge.htmlunit.corejs.javascript.Scriptable;
/**
* The JavaScript object that represents a Storage.
*
* @author Ahmed Ashour
* @author Marc Guillemot
* @author Ronald Brill
*/
@JsxClass
public class Storage extends SimpleScriptable {
private static List RESERVED_NAMES_ = Arrays.asList("clear", "key", "getItem", "length", "removeItem",
"setItem", "constructor", "toString", "toLocaleString", "valueOf", "hasOwnProperty", "propertyIsEnumerable",
"isPrototypeOf", "__defineGetter__", "__defineSetter__", "__lookupGetter__", "__lookupSetter__");
private final Map store_;
/**
* Public default constructor only for the prototype.
*/
@JsxConstructor({CHROME, EDGE, FF, FF78})
public Storage() {
store_ = null;
}
/**
* Constructor.
* @param window the parent scope
* @param store the storage itself
*/
public Storage(final Window window, final Map store) {
store_ = store;
setParentScope(window);
setPrototype(window.getPrototype(Storage.class));
}
/**
* {@inheritDoc}
*/
@Override
public void put(final String name, final Scriptable start, final Object value) {
final boolean isReserved = RESERVED_NAMES_.contains(name);
if (store_ == null || isReserved) {
super.put(name, start, value);
}
if (store_ != null && (!isReserved || getBrowserVersion().hasFeature(JS_STORAGE_PRESERVED_INCLUDED))) {
setItem(name, Context.toString(value));
}
}
/**
* {@inheritDoc}
*/
@Override
public Object get(final String name, final Scriptable start) {
if (store_ == null
|| (RESERVED_NAMES_.contains(name) && !getBrowserVersion().hasFeature(JS_STORAGE_GET_FROM_ITEMS))) {
return super.get(name, start);
}
final Object value = getItem(name);
if (value != null) {
return value;
}
return super.get(name, start);
}
/**
* Returns the length property.
* @return the length property
*/
@JsxGetter
public int getLength() {
return getMap().size();
}
/**
* Removes the specified key.
* @param key the item key
*/
@JsxFunction
public void removeItem(final String key) {
getMap().remove(key);
}
/**
* Returns the key of the specified index.
* @param index the index
* @return the key
*/
@JsxFunction
public String key(final int index) {
int counter = 0;
for (final String key : getMap().keySet()) {
if (counter++ == index) {
return key;
}
}
return null;
}
private Map getMap() {
return store_;
}
/**
* Returns the value of the specified key.
* @param key the item key
* @return the value
*/
@JsxFunction
public Object getItem(final String key) {
return getMap().get(key);
}
/**
* Sets the item value.
* @param key the item key
* @param data the value
*/
@JsxFunction
public void setItem(final String key, final String data) {
getMap().put(key, data);
}
/**
* Clears all items.
*/
@JsxFunction
public void clear() {
getMap().clear();
}
}