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comparison: rdf/base/idl/nsIRDFContainerUtils.idl
rdf/base/idl/nsIRDFContainerUtils.idl
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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 "nsIRDFContainer.idl" | |
| 8 #include "nsIRDFResource.idl" | |
| 9 | |
| 10 | |
| 11 // Container utilities | |
| 12 [scriptable, uuid(D4214E91-FB94-11D2-BDD8-00104BDE6048)] | |
| 13 interface nsIRDFContainerUtils : nsISupports { | |
| 14 /** | |
| 15 * Returns 'true' if the property is an RDF ordinal property. | |
| 16 */ | |
| 17 boolean IsOrdinalProperty(in nsIRDFResource aProperty); | |
| 18 | |
| 19 /** | |
| 20 * Convert the specified index to an ordinal property. | |
| 21 */ | |
| 22 nsIRDFResource IndexToOrdinalResource(in long aIndex); | |
| 23 | |
| 24 /** | |
| 25 * Convert the specified ordinal property into an index | |
| 26 */ | |
| 27 long OrdinalResourceToIndex(in nsIRDFResource aOrdinal); | |
| 28 | |
| 29 /** | |
| 30 * Return 'true' if the specified resource is a container | |
| 31 */ | |
| 32 boolean IsContainer(in nsIRDFDataSource aDataSource, in nsIRDFResource aResource); | |
| 33 | |
| 34 /** | |
| 35 * Return 'true' if the specified resource is a container and it is empty | |
| 36 */ | |
| 37 boolean IsEmpty(in nsIRDFDataSource aDataSource, in nsIRDFResource aResource); | |
| 38 | |
| 39 /** | |
| 40 * Return 'true' if the specified resource is a bag | |
| 41 */ | |
| 42 boolean IsBag(in nsIRDFDataSource aDataSource, in nsIRDFResource aResource); | |
| 43 | |
| 44 /** | |
| 45 * Return 'true' if the specified resource is a sequence | |
| 46 */ | |
| 47 boolean IsSeq(in nsIRDFDataSource aDataSource, in nsIRDFResource aResource); | |
| 48 | |
| 49 /** | |
| 50 * Return 'true' if the specified resource is an alternation | |
| 51 */ | |
| 52 boolean IsAlt(in nsIRDFDataSource aDataSource, in nsIRDFResource aResource); | |
| 53 | |
| 54 /** | |
| 55 * Decorates the specified resource appropriately to make it | |
| 56 * usable as an empty bag in the specified data source. | |
| 57 */ | |
| 58 nsIRDFContainer MakeBag(in nsIRDFDataSource aDataSource, in nsIRDFResource aResource); | |
| 59 | |
| 60 /** | |
| 61 * Decorates the specified resource appropriately to make it | |
| 62 * usable as an empty sequence in the specified data source. | |
| 63 */ | |
| 64 nsIRDFContainer MakeSeq(in nsIRDFDataSource aDataSource, in nsIRDFResource aResource); | |
| 65 | |
| 66 /** | |
| 67 * Decorates the specified resource appropriately to make it | |
| 68 * usable as an empty alternation in the specified data source. | |
| 69 */ | |
| 70 nsIRDFContainer MakeAlt(in nsIRDFDataSource aDataSource, in nsIRDFResource aResource); | |
| 71 | |
| 72 /** | |
| 73 * Retrieve the index of element in the container. Returns -1 if | |
| 74 * the element is not in the container. | |
| 75 */ | |
| 76 long indexOf(in nsIRDFDataSource aDataSource, in nsIRDFResource aContainer, in nsIRDFNode aElement); | |
| 77 }; | |
| 78 | |
| 79 %{C++ | |
| 80 extern nsresult | |
| 81 NS_NewRDFContainerUtils(nsIRDFContainerUtils** aResult); | |
| 82 %} |
