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