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53 lines
2.0 KiB
Plaintext
53 lines
2.0 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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// This file defines a list of use counters, which are things that can
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// record usage of Web platform features and then report this information
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// through Telemetry.
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//
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// The format of this file is very strict. Each line can be:
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//
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// (a) a blank line
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//
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// (b) a comment, which is a line that begins with "//"
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//
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// (c) an #if/ifdef/else/endif preprocessor directive
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//
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// (d) one of three possible use counter declarations:
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//
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// method <IDL interface name>.<IDL operation name>
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// attribute <IDL interface name>.<IDL attribute name>
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// property <CSS property method name>
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//
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// The |CSS property method name| should be identical to the |method|
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// argument to CSS_PROP and related macros. The method name is
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// identical to the name of the property, except that all hyphens are
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// removed and CamelCase naming is used. See nsCSSPropList.h for
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// further details.
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//
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// To actually cause use counters to be incremented, DOM methods
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// and attributes must have a [UseCounter] extended attribute in
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// the Web IDL file. CSS properties require no special treatment
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// beyond being listed below.
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//
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// You might reasonably ask why we have this file and we require
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// annotating things with [UseCounter] in the relevant WebIDL file as
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// well. Generating things from bindings codegen and ensuring all the
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// dependencies were correct would have been rather difficult, and
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// annotating the WebIDL files does nothing for identifying CSS
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// property usage, which we would also like to track.
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method SVGSVGElement.getElementById
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attribute SVGSVGElement.currentScale
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property Fill
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property FillOpacity
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// Push API
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method PushManager.subscribe
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method PushSubscription.unsubscribe
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// window.sidebar.addSearchEngine
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attribute Window.sidebar
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method External.addSearchEngine
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