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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
* Copyright (C) 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
WebInspector.Setting = function(name, defaultValue)
{
this._name = name;
this._localStorageKey = WebInspector.Setting.LocalStorageKeyPrefix + name;
this._defaultValue = defaultValue;
}
WebInspector.Object.addConstructorFunctions(WebInspector.Setting);
WebInspector.Setting.Event = {
Changed: "setting-changed"
};
WebInspector.Setting.LocalStorageKeyPrefix = "com.apple.WebInspector.";
WebInspector.Setting.prototype = {
constructor: WebInspector.Setting,
// Public
get name()
{
return this._name;
},
get value()
{
if ("_value" in this)
return this._value;
// Make a copy of the default value so changes to object values don't modify the default value.
this._value = JSON.parse(JSON.stringify(this._defaultValue));
if (window.localStorage && this._localStorageKey in window.localStorage) {
try {
this._value = JSON.parse(window.localStorage[this._localStorageKey]);
} catch(e) {
delete window.localStorage[this._localStorageKey];
}
}
return this._value;
},
set value(value)
{
this._value = value;
if (window.localStorage) {
try {
// Use Object.shallowEqual to properly compare objects.
if (Object.shallowEqual(this._value, this._defaultValue))
delete window.localStorage[this._localStorageKey];
else
window.localStorage[this._localStorageKey] = JSON.stringify(this._value);
} catch(e) {
console.error("Error saving setting with name: " + this._name);
}
}
this.dispatchEventToListeners(WebInspector.Setting.Event.Changed, this._value, {name: this._name});
}
}
WebInspector.Setting.prototype.__proto__ = WebInspector.Object.prototype;
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