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comparison: rdf/base/idl/nsIRDFObserver.idl
rdf/base/idl/nsIRDFObserver.idl
- changeset 0
- 6474c204b198
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsISupports.idl" | |
| 7 #include "nsIRDFResource.idl" | |
| 8 #include "nsIRDFNode.idl" | |
| 9 | |
| 10 interface nsIRDFDataSource; | |
| 11 | |
| 12 // An nsIRDFObserver object is an observer that will be notified | |
| 13 // when assertions are made or removed from a datasource | |
| 14 [scriptable, uuid(3CC75360-484A-11D2-BC16-00805F912FE7)] | |
| 15 interface nsIRDFObserver : nsISupports { | |
| 16 /** | |
| 17 * This method is called whenever a new assertion is made | |
| 18 * in the data source | |
| 19 * @param aDataSource the datasource that is issuing | |
| 20 * the notification. | |
| 21 * @param aSource the subject of the assertion | |
| 22 * @param aProperty the predicate of the assertion | |
| 23 * @param aTarget the object of the assertion | |
| 24 */ | |
| 25 void onAssert(in nsIRDFDataSource aDataSource, | |
| 26 in nsIRDFResource aSource, | |
| 27 in nsIRDFResource aProperty, | |
| 28 in nsIRDFNode aTarget); | |
| 29 | |
| 30 /** | |
| 31 * This method is called whenever an assertion is removed | |
| 32 * from the data source | |
| 33 * @param aDataSource the datasource that is issuing | |
| 34 * the notification. | |
| 35 * @param aSource the subject of the assertion | |
| 36 * @param aProperty the predicate of the assertion | |
| 37 * @param aTarget the object of the assertion | |
| 38 */ | |
| 39 void onUnassert(in nsIRDFDataSource aDataSource, | |
| 40 in nsIRDFResource aSource, | |
| 41 in nsIRDFResource aProperty, | |
| 42 in nsIRDFNode aTarget); | |
| 43 | |
| 44 /** | |
| 45 * This method is called when the object of an assertion | |
| 46 * changes from one value to another. | |
| 47 * @param aDataSource the datasource that is issuing | |
| 48 * the notification. | |
| 49 * @param aSource the subject of the assertion | |
| 50 * @param aProperty the predicate of the assertion | |
| 51 * @param aOldTarget the old object of the assertion | |
| 52 * @param aNewTarget the new object of the assertion | |
| 53 */ | |
| 54 void onChange(in nsIRDFDataSource aDataSource, | |
| 55 in nsIRDFResource aSource, | |
| 56 in nsIRDFResource aProperty, | |
| 57 in nsIRDFNode aOldTarget, | |
| 58 in nsIRDFNode aNewTarget); | |
| 59 | |
| 60 /** | |
| 61 * This method is called when the subject of an assertion | |
| 62 * changes from one value to another. | |
| 63 * @param aDataSource the datasource that is issuing | |
| 64 * the notification. | |
| 65 * @param aOldSource the old subject of the assertion | |
| 66 * @param aNewSource the new subject of the assertion | |
| 67 * @param aProperty the predicate of the assertion | |
| 68 * @param aTarget the object of the assertion | |
| 69 */ | |
| 70 void onMove(in nsIRDFDataSource aDataSource, | |
| 71 in nsIRDFResource aOldSource, | |
| 72 in nsIRDFResource aNewSource, | |
| 73 in nsIRDFResource aProperty, | |
| 74 in nsIRDFNode aTarget); | |
| 75 | |
| 76 /** | |
| 77 * This method is called when a datasource is about to | |
| 78 * send several notifications at once. The observer can | |
| 79 * use this as a cue to optimize its behavior. The observer | |
| 80 * can expect the datasource to call endUpdateBatch() when | |
| 81 * the group of notifications has completed. | |
| 82 * @param aDataSource the datasource that is going to | |
| 83 * be issuing the notifications. | |
| 84 */ | |
| 85 void onBeginUpdateBatch(in nsIRDFDataSource aDataSource); | |
| 86 | |
| 87 /** | |
| 88 * This method is called when a datasource has completed | |
| 89 * issuing a notification group. | |
| 90 * @param aDataSource the datasource that has finished | |
| 91 * issuing a group of notifications | |
| 92 */ | |
| 93 void onEndUpdateBatch(in nsIRDFDataSource aDataSource); | |
| 94 }; |
