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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 : #ifndef INCLUDED_FRAMEWORK_INC_DISPATCH_INTERCEPTIONHELPER_HXX
21 : #define INCLUDED_FRAMEWORK_INC_DISPATCH_INTERCEPTIONHELPER_HXX
22 :
23 : #include <macros/xinterface.hxx>
24 : #include <macros/generic.hxx>
25 : #include <general.h>
26 :
27 : #include <com/sun/star/frame/XDispatchProviderInterception.hpp>
28 : #include <com/sun/star/frame/XDispatchProviderInterceptor.hpp>
29 : #include <com/sun/star/frame/XDispatchProvider.hpp>
30 : #include <com/sun/star/frame/XDispatch.hpp>
31 : #include <com/sun/star/frame/XFrame.hpp>
32 : #include <com/sun/star/frame/DispatchDescriptor.hpp>
33 :
34 : #include <tools/wldcrd.hxx>
35 : #include <cppuhelper/implbase3.hxx>
36 : #include <cppuhelper/weakref.hxx>
37 :
38 : #include <deque>
39 :
40 : namespace framework{
41 :
42 : /** @short implements a helper to support interception with additional functionality.
43 :
44 : @descr This helper implements the complete XDispatchProviderInterception interface with
45 : master/slave functionality AND using of optional features like registration of URL pattern!
46 :
47 : @attention Don't use this class as direct member - use it dynamicly. Do not derive from this class.
48 : We hold a weakreference to our owner not to our superclass.
49 : */
50 : class InterceptionHelper : public ::cppu::WeakImplHelper3<
51 : css::frame::XDispatchProvider,
52 : css::frame::XDispatchProviderInterception,
53 : css::lang::XEventListener >
54 : {
55 :
56 : // structs, helper
57 :
58 : /** @short bind an interceptor component to its URL pattern registration. */
59 21022 : struct InterceptorInfo
60 : {
61 : /** @short reference to the interceptor component. */
62 : css::uno::Reference< css::frame::XDispatchProvider > xInterceptor;
63 :
64 : /** @short it's registration for URL patterns.
65 :
66 : @descr If the interceptor component does not support the optional interface
67 : XInterceptorInfo, it will be registered for one pattern "*" by default.
68 : That would make it possible to handle it in the same manner then real
69 : registered interceptor objects and we must not implement any special code. */
70 : css::uno::Sequence< OUString > lURLPattern;
71 : };
72 :
73 : /** @short implements a list of items of type InterceptorInfo, and provides some special
74 : functions on it.
75 :
76 : @descr Because interceptor objects can be registered for URL patterns,
77 : it supports a wildcard search on all list items.
78 : */
79 22892 : class InterceptorList : public ::std::deque< InterceptorInfo >
80 : {
81 : public:
82 :
83 : /** @short search for an interceptor inside this list using it's reference.
84 :
85 : @param xInterceptor
86 : points to the interceptor object, which should be located inside this list.
87 :
88 : @return An iterator object, which points directly to the located item inside this list.
89 : In case no interceptor could be found, it points to the end of this list!
90 : */
91 5254 : iterator findByReference(const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& xInterceptor)
92 : {
93 5254 : css::uno::Reference< css::frame::XDispatchProviderInterceptor > xProviderInterface(xInterceptor, css::uno::UNO_QUERY);
94 5254 : iterator pIt;
95 5254 : for (pIt=begin(); pIt!=end(); ++pIt)
96 : {
97 5254 : if (pIt->xInterceptor == xProviderInterface)
98 5254 : return pIt;
99 : }
100 0 : return end();
101 : }
102 :
103 : /** @short search for an interceptor inside this list using it's reference.
104 :
105 : @param xInterceptor
106 : points to the interceptor object, which should be located inside this list.
107 :
108 : @return An iterator object, which points directly to the located item inside this list.
109 : In case no interceptor could be found, it points to the end of this list!
110 : */
111 290158 : iterator findByPattern(const OUString& sURL)
112 : {
113 290158 : iterator pIt;
114 290158 : for (pIt=begin(); pIt!=end(); ++pIt)
115 : {
116 275964 : sal_Int32 c = pIt->lURLPattern.getLength();
117 275964 : const OUString* pPattern = pIt->lURLPattern.getConstArray();
118 :
119 275964 : for (sal_Int32 i=0; i<c; ++i)
120 : {
121 275964 : WildCard aPattern(pPattern[i]);
122 275964 : if (aPattern.Matches(sURL))
123 275964 : return pIt;
124 0 : }
125 : }
126 14194 : return end();
127 : }
128 : };
129 :
130 : // member
131 :
132 : private:
133 :
134 : /** @short reference to the frame, which uses this instance to implement it's own interception.
135 :
136 : @descr We hold a weak reference only, to make disposing operations easy. */
137 : css::uno::WeakReference< css::frame::XFrame > m_xOwnerWeak;
138 :
139 : /** @short this interception helper implements the top level master of an interceptor list ...
140 : but this member is the lowest possible slave! */
141 : css::uno::Reference< css::frame::XDispatchProvider > m_xSlave;
142 :
143 : /** @short contains all registered interceptor objects. */
144 : InterceptorList m_lInterceptionRegs;
145 :
146 : /** @short it regulates, which interceptor is used first.
147 : The last or the first registered one. */
148 : static bool m_bPreferrFirstInterceptor;
149 :
150 : // native interface
151 :
152 : public:
153 :
154 : /** @short creates a new interception helper instance.
155 :
156 : @param xOwner
157 : points to the frame, which use this instances to support it's own interception interfaces.
158 :
159 : @param xSlave
160 : an outside creates dispatch provider, which has to be used here as lowest slave "interceptor".
161 : */
162 : InterceptionHelper(const css::uno::Reference< css::frame::XFrame >& xOwner,
163 : const css::uno::Reference< css::frame::XDispatchProvider >& xSlave);
164 :
165 : protected:
166 :
167 : /** @short standard destructor.
168 :
169 : @descr This method destruct an instance of this class and clear some member.
170 : This method is protected, because its not allowed to use this class as a direct member!
171 : You MUST use a dynamical instance (pointer). That's the reason for a protected dtor.
172 : */
173 : virtual ~InterceptionHelper();
174 :
175 : // uno interface
176 :
177 : public:
178 :
179 : // XDispatchProvider
180 :
181 : /** @short query for a dispatch, which implements the requested feature.
182 :
183 : @descr We search inside our list of interception registrations, to locate
184 : any interested interceptor. In case no interceptor exists or nobody is
185 : interested on this URL our lowest slave will be used.
186 :
187 : @param aURL
188 : describes the requested dispatch functionality.
189 :
190 : @param sTargetFrameName
191 : the name of the target frame or a special name like "_blank", "_top" ...
192 : Won't be used here ... but may by one of our registered interceptor objects
193 : or our slave.
194 :
195 : @param nSearchFlags
196 : optional search parameter for targeting, if sTargetFrameName isn't a special one.
197 :
198 : @return A valid dispatch object, if any interceptor or at least our slave is interested on the given URL;
199 : or NULL otherwise.
200 : */
201 : virtual css::uno::Reference< css::frame::XDispatch > SAL_CALL queryDispatch(const css::util::URL& aURL ,
202 : const OUString& sTargetFrameName,
203 : sal_Int32 nSearchFlags )
204 : throw(css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
205 :
206 : // XDispatchProvider
207 :
208 : /** @short implements an optimized queryDispatch() for remote.
209 :
210 : @descr It capsulate more than one queryDispatch() requests and return a lits of dispatch objects
211 : as result. Because both lists (in and out) coreespond together, it's not allowed to
212 : pack it - means suppress NULL references!
213 :
214 : @param lDescriptor
215 : a list of queryDispatch() arguments.
216 :
217 : @return A list of dispatch objects.
218 : */
219 : virtual css::uno::Sequence< css::uno::Reference< css::frame::XDispatch > > SAL_CALL queryDispatches(const css::uno::Sequence< css::frame::DispatchDescriptor >& lDescriptor)
220 : throw(css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
221 :
222 : // XDispatchProviderInterception
223 :
224 : /** @short register an interceptor.
225 :
226 : @descr Somebody can register himself to intercept all or some special dispatches.
227 : It's depend from his supported interfaces. If he implement XInterceptorInfo
228 : he his called for some special URLs only - otherwise we call it for every request!
229 :
230 : @attention We don't check for double registrations here!
231 :
232 : @param xInterceptor
233 : reference to interceptor, which wish to be registered here.
234 :
235 : @throw A RuntimeException if the given reference is NULL!
236 : */
237 : virtual void SAL_CALL registerDispatchProviderInterceptor(const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& xInterceptor)
238 : throw(css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
239 :
240 : // XDispatchProviderInterception
241 :
242 : /** @short release an interceptor.
243 :
244 : @descr Remove the registered interceptor from our internal list
245 : and delete all special information about it.
246 :
247 : @param xInterceptor
248 : reference to the interceptor, which wish to be deregistered.
249 :
250 : @throw A RuntimeException if the given reference is NULL!
251 : */
252 : virtual void SAL_CALL releaseDispatchProviderInterceptor( const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& xInterceptor ) throw( css::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
253 :
254 : // XEventListener
255 :
256 : /** @short Is called from our owner frame, in case he will be disposed.
257 :
258 : @descr We have to relaease all references to him then.
259 : Normally we will die by ref count too ...
260 : */
261 : virtual void SAL_CALL disposing(const css::lang::EventObject& aEvent)
262 : throw(css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
263 :
264 : }; // class InterceptionHelper
265 :
266 : } // namespace framework
267 :
268 : #endif // INCLUDED_FRAMEWORK_INC_DISPATCH_INTERCEPTIONHELPER_HXX
269 :
270 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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