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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
/**
* This interface exposes the general notion of a scheduled object with a
* integral priority value. Following UNIX conventions, smaller (and possibly
* negative) values have higher priority.
*
* This interface does not strictly define what happens when the priority of an
* object is changed. An implementation of this interface is free to define
* the side-effects of changing the priority of an object. In some cases,
* changing the priority of an object may be disallowed (resulting in an
* exception being thrown) or may simply be ignored.
*/
[scriptable, uuid(aa578b44-abd5-4c19-8b14-36d4de6fdc36)]
interface nsISupportsPriority : nsISupports
{
/**
* Typical priority values.
*/
const long PRIORITY_HIGHEST = -20;
const long PRIORITY_HIGH = -10;
const long PRIORITY_NORMAL = 0;
const long PRIORITY_LOW = 10;
const long PRIORITY_LOWEST = 20;
/**
* This attribute may be modified to change the priority of this object. The
* implementation of this interface is free to truncate a given priority
* value to whatever limits are appropriate. Typically, this attribute is
* initialized to PRIORITY_NORMAL, but implementations may choose to assign a
* different initial value.
*/
attribute long priority;
/**
* This method adjusts the priority attribute by a given delta. It helps
* reduce the amount of coding required to increment or decrement the value
* of the priority attribute.
*/
void adjustPriority(in long delta);
};