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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include "controlfeatureinterception.hxx"
21 : #include "urltransformer.hxx"
22 : #include <osl/diagnose.h>
23 :
24 :
25 : namespace frm
26 : {
27 :
28 :
29 : using namespace ::com::sun::star::uno;
30 : using namespace ::com::sun::star::frame;
31 : using namespace ::com::sun::star::util;
32 : using namespace ::com::sun::star::lang;
33 :
34 274 : ControlFeatureInterception::ControlFeatureInterception( const Reference< XComponentContext >& _rxORB )
35 274 : :m_pUrlTransformer( new UrlTransformer( _rxORB ) )
36 : {
37 274 : }
38 :
39 :
40 62 : void SAL_CALL ControlFeatureInterception::registerDispatchProviderInterceptor( const Reference< XDispatchProviderInterceptor >& _rxInterceptor ) throw (RuntimeException )
41 : {
42 62 : if ( !_rxInterceptor.is() )
43 : {
44 : OSL_FAIL( "ControlFeatureInterception::registerDispatchProviderInterceptor: invalid interceptor!" );
45 62 : return;
46 : }
47 :
48 62 : if ( m_xFirstDispatchInterceptor.is() )
49 : {
50 : // there is already an interceptor; the new one will become its master
51 0 : Reference< XDispatchProvider > xFirstProvider( m_xFirstDispatchInterceptor, UNO_QUERY );
52 0 : _rxInterceptor->setSlaveDispatchProvider( xFirstProvider );
53 0 : m_xFirstDispatchInterceptor->setMasterDispatchProvider( xFirstProvider );
54 : }
55 :
56 : // we are the master of the chain's first interceptor
57 62 : m_xFirstDispatchInterceptor = _rxInterceptor;
58 62 : m_xFirstDispatchInterceptor->setMasterDispatchProvider( NULL );
59 : // it's the first of the interceptor chain
60 : }
61 :
62 :
63 62 : void SAL_CALL ControlFeatureInterception::releaseDispatchProviderInterceptor( const Reference< XDispatchProviderInterceptor >& _rxInterceptor ) throw (RuntimeException )
64 : {
65 62 : if ( !_rxInterceptor.is() )
66 : {
67 : OSL_FAIL( "ControlFeatureInterception::releaseDispatchProviderInterceptor: invalid interceptor!" );
68 62 : return;
69 : }
70 :
71 62 : Reference< XDispatchProviderInterceptor > xChainWalk( m_xFirstDispatchInterceptor );
72 :
73 62 : if ( m_xFirstDispatchInterceptor == _rxInterceptor )
74 : { // our chain will have a new first element
75 62 : Reference< XDispatchProviderInterceptor > xSlave( m_xFirstDispatchInterceptor->getSlaveDispatchProvider(), UNO_QUERY );
76 62 : m_xFirstDispatchInterceptor = xSlave;
77 : }
78 : // do this before removing the interceptor from the chain as we won't know it's slave afterwards)
79 :
80 124 : while ( xChainWalk.is() )
81 : {
82 : // walk along the chain of interceptors and look for the interceptor that has to be removed
83 62 : Reference< XDispatchProviderInterceptor > xSlave( xChainWalk->getSlaveDispatchProvider(), UNO_QUERY );
84 :
85 62 : if ( xChainWalk == _rxInterceptor )
86 : {
87 : // old master may be an interceptor too
88 62 : Reference< XDispatchProviderInterceptor > xMaster( xChainWalk->getMasterDispatchProvider(), UNO_QUERY );
89 :
90 : // unchain the interceptor that has to be removed
91 62 : xChainWalk->setSlaveDispatchProvider( NULL );
92 62 : xChainWalk->setMasterDispatchProvider( NULL );
93 :
94 : // reconnect the chain
95 62 : if ( xMaster.is() )
96 : {
97 0 : xMaster->setSlaveDispatchProvider( Reference< XDispatchProvider >::query( xSlave ) );
98 : }
99 :
100 : // if somebody has registered the same interceptor twice, then we will remove
101 : // it once per call ...
102 62 : break;
103 : }
104 :
105 0 : xChainWalk = xSlave;
106 62 : }
107 : }
108 :
109 :
110 276 : void ControlFeatureInterception::dispose()
111 : {
112 : // release all interceptors
113 276 : Reference< XDispatchProviderInterceptor > xInterceptor( m_xFirstDispatchInterceptor );
114 276 : m_xFirstDispatchInterceptor.clear();
115 552 : while ( xInterceptor.is() )
116 : {
117 : // tell the interceptor it has a new (means no) predecessor
118 0 : xInterceptor->setMasterDispatchProvider( NULL );
119 :
120 : // ask for it's successor
121 0 : Reference< XDispatchProvider > xSlave = xInterceptor->getSlaveDispatchProvider();
122 : // and give it the new (means no) successoert
123 0 : xInterceptor->setSlaveDispatchProvider( NULL );
124 :
125 : // start over with the next chain element
126 0 : xInterceptor.set(xSlave, css::uno::UNO_QUERY);
127 276 : }
128 276 : }
129 :
130 19 : Reference< XDispatch > ControlFeatureInterception::queryDispatch( const URL& _rURL, const OUString& _rTargetFrameName, ::sal_Int32 _nSearchFlags )
131 : {
132 19 : Reference< XDispatch > xDispatcher;
133 19 : if ( m_xFirstDispatchInterceptor.is() )
134 0 : xDispatcher = m_xFirstDispatchInterceptor->queryDispatch( _rURL, _rTargetFrameName, _nSearchFlags );
135 19 : return xDispatcher;
136 : }
137 :
138 :
139 19 : Reference< XDispatch > ControlFeatureInterception::queryDispatch( const URL& _rURL )
140 : {
141 19 : return queryDispatch( _rURL, OUString(), 0 );
142 : }
143 :
144 :
145 0 : Reference< XDispatch > ControlFeatureInterception::queryDispatch( const sal_Char* _pAsciiURL )
146 : {
147 0 : return queryDispatch( m_pUrlTransformer->getStrictURLFromAscii( _pAsciiURL ) );
148 : }
149 :
150 :
151 : } // namespace frm
152 :
153 :
154 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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