1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is the Mozilla XTF project.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Alex Fritze.
19 : * Portions created by the Initial Developer are Copyright (C) 2004
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Alex Fritze <alex@croczilla.com> (original author)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "nsCOMPtr.h"
40 : #include "nsINodeInfo.h"
41 : #include "nsIServiceManager.h"
42 : #include "nsIXTFElement.h"
43 : #include "nsIXTFElementFactory.h"
44 : #include "nsIXTFService.h"
45 : #include "nsInterfaceHashtable.h"
46 : #include "nsString.h"
47 : #include "nsXTFElementWrapper.h"
48 :
49 :
50 : ////////////////////////////////////////////////////////////////////////
51 : // nsXTFService class
52 : class nsXTFService : public nsIXTFService
53 235 : {
54 : protected:
55 : friend nsresult NS_NewXTFService(nsIXTFService** aResult);
56 :
57 : nsXTFService();
58 :
59 : public:
60 : // nsISupports interface
61 : NS_DECL_ISUPPORTS
62 :
63 : // nsIXTFService interface
64 : nsresult CreateElement(nsIContent** aResult,
65 : already_AddRefed<nsINodeInfo> aNodeInfo);
66 :
67 : private:
68 : nsInterfaceHashtable<nsUint32HashKey, nsIXTFElementFactory> mFactoryHash;
69 : };
70 :
71 : //----------------------------------------------------------------------
72 : // implementation:
73 :
74 236 : nsXTFService::nsXTFService()
75 : {
76 236 : mFactoryHash.Init(); // XXX this can fail. move to Init()
77 236 : }
78 :
79 : nsresult
80 236 : NS_NewXTFService(nsIXTFService** aResult)
81 : {
82 236 : NS_PRECONDITION(aResult != nsnull, "null ptr");
83 236 : if (! aResult)
84 0 : return NS_ERROR_NULL_POINTER;
85 :
86 236 : nsXTFService* result = new nsXTFService();
87 236 : if (! result)
88 0 : return NS_ERROR_OUT_OF_MEMORY;
89 :
90 236 : NS_ADDREF(result);
91 236 : *aResult = result;
92 236 : return NS_OK;
93 : }
94 :
95 : //----------------------------------------------------------------------
96 : // nsISupports methods
97 :
98 2358 : NS_IMPL_ISUPPORTS1(nsXTFService, nsIXTFService)
99 :
100 : //----------------------------------------------------------------------
101 : // nsIXTFService methods
102 :
103 : nsresult
104 19537 : nsXTFService::CreateElement(nsIContent** aResult,
105 : already_AddRefed<nsINodeInfo> aNodeInfo)
106 : {
107 39074 : nsCOMPtr<nsIXTFElementFactory> factory;
108 :
109 : // Check if we have an xtf factory for the given namespaceid in our cache:
110 19537 : if (!mFactoryHash.Get(aNodeInfo.get()->NamespaceID(), getter_AddRefs(factory))) {
111 : // No. See if there is one registered with the component manager:
112 39072 : nsCAutoString xtf_contract_id(NS_XTF_ELEMENT_FACTORY_CONTRACTID_PREFIX);
113 39072 : nsAutoString uri;
114 19536 : aNodeInfo.get()->GetNamespaceURI(uri);
115 19536 : AppendUTF16toUTF8(uri, xtf_contract_id);
116 : #ifdef DEBUG_xtf_verbose
117 : printf("Testing for XTF factory at %s\n", xtf_contract_id.get());
118 : #endif
119 19536 : factory = do_GetService(xtf_contract_id.get());
120 19536 : if (factory) {
121 : #ifdef DEBUG
122 1 : printf("We've got an XTF factory: %s \n", xtf_contract_id.get());
123 : #endif
124 : // Put into hash:
125 1 : mFactoryHash.Put(aNodeInfo.get()->NamespaceID(), factory);
126 : }
127 : }
128 19537 : if (!factory) return NS_ERROR_FAILURE;
129 :
130 : // We have an xtf factory. Now try to create an element for the given tag name:
131 4 : nsCOMPtr<nsIXTFElement> elem;
132 4 : nsAutoString tagName;
133 2 : aNodeInfo.get()->GetName(tagName);
134 2 : factory->CreateElement(tagName, getter_AddRefs(elem));
135 2 : if (!elem) return NS_ERROR_FAILURE;
136 :
137 : // We've got an xtf element. Create a wrapper for it:
138 2 : return NS_NewXTFElementWrapper(elem, aNodeInfo, aResult);
139 : }
140 :
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