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1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 /* This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
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4 * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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5 |
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6 #ifndef nsIScrollObserver_h___ |
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7 #define nsIScrollObserver_h___ |
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8 |
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9 #include "nsISupports.h" |
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10 |
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11 #define NS_ISCROLLOBSERVER_IID \ |
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12 { 0x7c1a8b63, 0xe322, 0x4827, \ |
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13 { 0xa4, 0xb1, 0x3b, 0x6e, 0x59, 0x03, 0x47, 0x7e } } |
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14 |
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15 class nsIScrollObserver : public nsISupports |
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16 { |
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17 public: |
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18 NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCROLLOBSERVER_IID) |
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19 |
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20 /** |
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21 * Called when the scroll position of some element has changed. |
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22 */ |
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23 virtual void ScrollPositionChanged() = 0; |
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24 }; |
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25 |
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26 NS_DEFINE_STATIC_IID_ACCESSOR(nsIScrollObserver, NS_ISCROLLOBSERVER_IID) |
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27 |
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28 #endif /* nsIScrollObserver_h___ */ |