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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
commit940b4d1848e8c70ab7642901a68594e8016caffc (patch)
treeeb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /framework/inc/dispatch/interceptionhelper.hxx
parentInitial commit. (diff)
downloadlibreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.tar.xz
libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.zip
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_FRAMEWORK_INC_DISPATCH_INTERCEPTIONHELPER_HXX
+#define INCLUDED_FRAMEWORK_INC_DISPATCH_INTERCEPTIONHELPER_HXX
+
+#include <com/sun/star/frame/XDispatchProviderInterception.hpp>
+#include <com/sun/star/frame/XDispatchProviderInterceptor.hpp>
+#include <com/sun/star/frame/XDispatchProvider.hpp>
+#include <com/sun/star/frame/XDispatch.hpp>
+#include <com/sun/star/frame/XFrame.hpp>
+#include <com/sun/star/frame/DispatchDescriptor.hpp>
+
+#include <tools/wldcrd.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/weakref.hxx>
+
+#include <deque>
+
+namespace framework{
+
+/** @short implements a helper to support interception with additional functionality.
+
+ @descr This helper implements the complete XDispatchProviderInterception interface with
+ master/slave functionality AND using of optional features like registration of URL pattern!
+
+ @attention Don't use this class as direct member - use it dynamically. Do not derive from this class.
+ We hold a weakreference to our owner not to our superclass.
+ */
+class InterceptionHelper final : public ::cppu::WeakImplHelper<
+ css::frame::XDispatchProvider,
+ css::frame::XDispatchProviderInterception,
+ css::lang::XEventListener >
+{
+
+ // structs, helper
+
+ /** @short bind an interceptor component to its URL pattern registration. */
+ struct InterceptorInfo
+ {
+ /** @short reference to the interceptor component. */
+ css::uno::Reference< css::frame::XDispatchProvider > xInterceptor;
+
+ /** @short it's registration for URL patterns.
+
+ @descr If the interceptor component does not support the optional interface
+ XInterceptorInfo, it will be registered for one pattern "*" by default.
+ That would make it possible to handle it in the same manner then real
+ registered interceptor objects and we must not implement any special code. */
+ css::uno::Sequence< OUString > lURLPattern;
+ };
+
+ /** @short implements a list of items of type InterceptorInfo, and provides some special
+ functions on it.
+
+ @descr Because interceptor objects can be registered for URL patterns,
+ it supports a wildcard search on all list items.
+ */
+ class InterceptorList : public ::std::deque< InterceptorInfo >
+ {
+ public:
+
+ /** @short search for an interceptor inside this list using it's reference.
+
+ @param xInterceptor
+ points to the interceptor object, which should be located inside this list.
+
+ @return An iterator object, which points directly to the located item inside this list.
+ In case no interceptor could be found, it points to the end of this list!
+ */
+ iterator findByReference(const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& xInterceptor)
+ {
+ iterator pIt;
+ for (pIt=begin(); pIt!=end(); ++pIt)
+ {
+ if (pIt->xInterceptor == xInterceptor)
+ return pIt;
+ }
+ return end();
+ }
+
+ /** @short search for an interceptor inside this list using it's reference.
+
+ @param xInterceptor
+ points to the interceptor object, which should be located inside this list.
+
+ @return An iterator object, which points directly to the located item inside this list.
+ In case no interceptor could be found, it points to the end of this list!
+ */
+ iterator findByPattern(const OUString& sURL)
+ {
+ iterator pIt;
+ for (pIt=begin(); pIt!=end(); ++pIt)
+ {
+ sal_Int32 c = pIt->lURLPattern.getLength();
+ const OUString* pPattern = pIt->lURLPattern.getConstArray();
+
+ for (sal_Int32 i=0; i<c; ++i)
+ {
+ WildCard aPattern(pPattern[i]);
+ if (aPattern.Matches(sURL))
+ return pIt;
+ }
+ }
+ return end();
+ }
+ };
+
+ // member
+
+ private:
+
+ /** @short reference to the frame, which uses this instance to implement its own interception.
+
+ @descr We hold a weak reference only, to make disposing operations easy. */
+ css::uno::WeakReference< css::frame::XFrame > m_xOwnerWeak;
+
+ /** @short this interception helper implements the top level master of an interceptor list ...
+ but this member is the lowest possible slave! */
+ css::uno::Reference< css::frame::XDispatchProvider > m_xSlave;
+
+ /** @short contains all registered interceptor objects. */
+ InterceptorList m_lInterceptionRegs;
+
+ // native interface
+
+ public:
+
+ /** @short creates a new interception helper instance.
+
+ @param xOwner
+ points to the frame, which use this instances to support its own interception interfaces.
+
+ @param xSlave
+ an outside creates dispatch provider, which has to be used here as lowest slave "interceptor".
+ */
+ InterceptionHelper(const css::uno::Reference< css::frame::XFrame >& xOwner,
+ const css::uno::Reference< css::frame::XDispatchProvider >& xSlave);
+
+ private:
+
+ /** @short standard destructor.
+
+ @descr This method destruct an instance of this class and clear some member.
+ This method is protected, because it's not allowed to use this class as a direct member!
+ You MUST use a dynamical instance (pointer). That's the reason for a protected dtor.
+ */
+ virtual ~InterceptionHelper() override;
+
+ // uno interface
+
+ public:
+
+ // XDispatchProvider
+
+ /** @short query for a dispatch, which implements the requested feature.
+
+ @descr We search inside our list of interception registrations, to locate
+ any interested interceptor. In case no interceptor exists or nobody is
+ interested on this URL our lowest slave will be used.
+
+ @param aURL
+ describes the requested dispatch functionality.
+
+ @param sTargetFrameName
+ the name of the target frame or a special name like "_blank", "_top" ...
+ Won't be used here ... but may by one of our registered interceptor objects
+ or our slave.
+
+ @param nSearchFlags
+ optional search parameter for targeting, if sTargetFrameName isn't a special one.
+
+ @return A valid dispatch object, if any interceptor or at least our slave is interested on the given URL;
+ or NULL otherwise.
+ */
+ virtual css::uno::Reference< css::frame::XDispatch > SAL_CALL queryDispatch(const css::util::URL& aURL ,
+ const OUString& sTargetFrameName,
+ sal_Int32 nSearchFlags ) override;
+
+ // XDispatchProvider
+
+ /** @short implements an optimized queryDispatch() for remote.
+
+ @descr It capsulate more than one queryDispatch() requests and return a list of dispatch objects
+ as result. Because both lists (in and out) correspond together, it's not allowed to
+ pack it - means suppress NULL references!
+
+ @param lDescriptor
+ a list of queryDispatch() arguments.
+
+ @return A list of dispatch objects.
+ */
+ virtual css::uno::Sequence< css::uno::Reference< css::frame::XDispatch > > SAL_CALL queryDispatches(const css::uno::Sequence< css::frame::DispatchDescriptor >& lDescriptor) override;
+
+ // XDispatchProviderInterception
+
+ /** @short register an interceptor.
+
+ @descr Somebody can register himself to intercept all or some special dispatches.
+ It's depend from his supported interfaces. If he implement XInterceptorInfo
+ he his called for some special URLs only - otherwise we call it for every request!
+
+ @attention We don't check for double registrations here!
+
+ @param xInterceptor
+ reference to interceptor, which wishes to be registered here.
+
+ @throw A RuntimeException if the given reference is NULL!
+ */
+ virtual void SAL_CALL registerDispatchProviderInterceptor(const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& xInterceptor) override;
+
+ // XDispatchProviderInterception
+
+ /** @short release an interceptor.
+
+ @descr Remove the registered interceptor from our internal list
+ and delete all special information about it.
+
+ @param xInterceptor
+ reference to the interceptor, which wishes to be deregistered.
+
+ @throw A RuntimeException if the given reference is NULL!
+ */
+ virtual void SAL_CALL releaseDispatchProviderInterceptor( const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& xInterceptor ) override;
+
+ // XEventListener
+
+ /** @short Is called from our owner frame, in case he will be disposed.
+
+ @descr We have to release all references to him then.
+ Normally we will die by ref count too...
+ */
+ virtual void SAL_CALL disposing(const css::lang::EventObject& aEvent) override;
+
+}; // class InterceptionHelper
+
+} // namespace framework
+
+#endif // INCLUDED_FRAMEWORK_INC_DISPATCH_INTERCEPTIONHELPER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */