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| -rw-r--r-- | include/unotools/mediadescriptor.hxx | 338 |
1 files changed, 338 insertions, 0 deletions
diff --git a/include/unotools/mediadescriptor.hxx b/include/unotools/mediadescriptor.hxx new file mode 100644 index 000000000..bba9ea9a9 --- /dev/null +++ b/include/unotools/mediadescriptor.hxx @@ -0,0 +1,338 @@ +/* -*- 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_UNOTOOLS_MEDIADESCRIPTOR_HXX +#define INCLUDED_UNOTOOLS_MEDIADESCRIPTOR_HXX + +#include <sal/config.h> + +#include <vector> + +#include <comphelper/docpasswordrequest.hxx> +#include <comphelper/sequenceashashmap.hxx> +#include <rtl/ustring.hxx> +#include <unotools/unotoolsdllapi.h> + +namespace com::sun::star::io { + class XInputStream; +} +namespace comphelper { class IDocPasswordVerifier; } + +namespace utl { + +/** @short can be used to work with a css::document::MediaDescriptor + struct. + + @descr It wraps an unordered_map around the Sequence< css::beans::PropertyValue >, which + represent the MediaDescriptor item. + Further this helper defines often used functions (as e.g. open of the required streams, + consistent checks etcpp.) and it defines all usable property names. + + @attention This class isn't threadsafe and must be guarded from outside! + */ +class UNOTOOLS_DLLPUBLIC MediaDescriptor : public comphelper::SequenceAsHashMap +{ + public: + + /** @short these methods can be used to get the different property names + as static const OUString values. + + @descr Because definition and declaration of static const class members + does not work as expected under windows (under unix it works as well) + these way must be used :-( + */ + static const OUString& PROP_ABORTED(); + static const OUString& PROP_ASTEMPLATE(); + static const OUString& PROP_COMPONENTDATA(); + static const OUString& PROP_DOCUMENTSERVICE(); + static const OUString& PROP_ENCRYPTIONDATA(); + static const OUString& PROP_FILENAME(); + static const OUString& PROP_FILTERNAME(); + static const OUString& PROP_FILTERPROVIDER(); + static const OUString& PROP_FILTEROPTIONS(); + static const OUString& PROP_FRAME(); + static const OUString& PROP_FRAMENAME(); + static const OUString& PROP_HIDDEN(); + static const OUString& PROP_INPUTSTREAM(); + static const OUString& PROP_INTERACTIONHANDLER(); + static const OUString& PROP_AUTHENTICATIONHANDLER(); + static const OUString& PROP_JUMPMARK(); + static const OUString& PROP_MACROEXECUTIONMODE(); + static const OUString& PROP_MEDIATYPE(); + static const OUString& PROP_MINIMIZED(); + static const OUString& PROP_NOAUTOSAVE(); + static const OUString& PROP_OPENNEWVIEW(); + static const OUString& PROP_OUTPUTSTREAM(); + static const OUString& PROP_PASSWORD(); + static const OUString& PROP_POSTDATA(); + static const OUString& PROP_PREVIEW(); + static const OUString& PROP_READONLY(); + static const OUString& PROP_REFERRER(); + static const OUString& PROP_REPLACEABLE(); + static const OUString& PROP_SALVAGEDFILE(); + static const OUString& PROP_STATUSINDICATOR(); + static const OUString& PROP_STREAM(); + static const OUString& PROP_STREAMFOROUTPUT(); + static const OUString& PROP_TEMPLATENAME(); + static const OUString& PROP_TITLE(); + static const OUString& PROP_TYPENAME(); + static const OUString& PROP_UCBCONTENT(); + static const OUString& PROP_UPDATEDOCMODE(); + static const OUString& PROP_URL(); + static const OUString& PROP_VERSION(); + static const OUString& PROP_DOCUMENTTITLE(); + static const OUString& PROP_MODEL(); + static const OUString& PROP_VIEWONLY(); + static const OUString& PROP_DOCUMENTBASEURL(); + static const OUString& PROP_SUGGESTEDSAVEASNAME(); + + // interface + public: + + /** @short these ctors do nothing - excepting that they forward + the given parameters to the base class ctors. + + @descr The ctors must be overwritten to resolve conflicts with + the default ctors of the compiler :-(. + */ + MediaDescriptor(); + MediaDescriptor(const css::uno::Sequence< css::beans::PropertyValue >& lSource); + + /** @short it checks if the descriptor already has a valid + InputStream item and creates a new one, if not. + + @descr This method uses the current items of this MediaDescriptor, + to open the stream (as e.g. URL, ReadOnly, PostData etcpp.). + It creates a seekable stream and put it into the descriptor. + + A might existing InteractionHandler will be used automatically, + to solve problems! + + In case of local file the system file locking is used. + + @return TRUE, if the stream was already part of the descriptor or could + be created as new item. FALSE otherwise. + */ + bool addInputStream(); + + /** @short it checks if the descriptor already has a valid + InputStream item and creates a new one, if not. + + @descr This method uses the current items of this MediaDescriptor, + to open the stream (as e.g. URL, ReadOnly, PostData etcpp.). + It creates a seekable stream and put it into the descriptor. + + A might existing InteractionHandler will be used automatically, + to solve problems! + + In case of local file the system file locking is used based on + configuration settings. + + @return TRUE, if the stream was already part of the descriptor or could + be created as new item. FALSE otherwise. + */ + bool addInputStreamOwnLock(); + + /** @short it checks if the descriptor describes a readonly stream. + + @descr The descriptor itself isn't changed doing so. + It's only checked if the stream seems to be based + of a real readonly file. + + @Attention + We don't check the property "ReadOnly" here. Because + this property can be set from outside and overwrites + the readonly state of the stream. + If e.g. the stream could be opened read/write ... + but "ReadOnly" property is set to TRUE, this means: + show a readonly UI on top of this read/write stream. + + @return TRUE, if the stream must be interpreted as readonly ... + FALSE otherwise. + */ + bool isStreamReadOnly() const; + + /** Returns a value from the sequence contained in the property + 'ComponentData' of this media descriptor. + + @descr The property 'ComponentData' should be empty, or should + contain a value of type sequence<com.sun.star.beans.NamedValue> + or sequence<com.sun.star.beans.PropertyValue>. + + @return The value with the specified name, if existing in the + sequence of the 'ComponentData' property, otherwise an empty + Any. + */ + css::uno::Any getComponentDataEntry( + const OUString& rName ) const; + + /** Inserts a value into the sequence contained in the property + 'ComponentData' of the media descriptor. + + @descr The property 'ComponentData' should be empty, or should + contain a value of type sequence<com.sun.star.beans.NamedValue> + or sequence<com.sun.star.beans.PropertyValue>. The passed value + will be inserted into the sequence, or, if already existing, + will be overwritten. + + @param rName The name of the value to be inserted into the + sequence of the 'ComponentData' property. + + @param rValue The value to be inserted into the sequence of the + 'ComponentData' property. + */ + void setComponentDataEntry( + const OUString& rName, + const css::uno::Any& rValue ); + + /** Removes a value from the sequence contained in the property + 'ComponentData' of the media descriptor. + + @descr The property 'ComponentData' should be empty, or should + contain a value of type sequence<com.sun.star.beans.NamedValue> + or sequence<com.sun.star.beans.PropertyValue>. The value with + the passed name will be removed from the sequence, if existing. + + @param rName The name of the value to be removed from the sequence + of the 'ComponentData' property. + */ + void clearComponentDataEntry( + const OUString& rName ); + + /** This helper function tries to find a password for the document + described by this media descriptor. + + First, the list of default passwords will be tried if provided. This + is needed by import filters for external file formats that have to + check a predefined password in some cases without asking the user + for a password. Every password is checked using the passed password + verifier. + + If not successful, this media descriptor is asked for a password, + that has been set e.g. by an API call to load a document. If + existing, the password is checked using the passed password + verifier. + + If still not successful, the interaction handler contained in this + media descriptor is used to request a password from the user. This + will be repeated until the passed password verifier validates the + entered password, or if the user chooses to cancel password input. + + If a valid password (that is not contained in the passed list of + default passwords) was found, it will be inserted into the + "Password" property of this descriptor. + + @param rVerifier + The password verifier used to check every processed password. + + @param eRequestType + The password request type that will be passed to the + DocPasswordRequest object created internally. See + docpasswordrequest.hxx for more details. + + @param pDefaultPasswords + If not null, contains default passwords that will be tried before a + password will be requested from the media descriptor or the user. + + @return + If not empty, contains the password that has been validated by the + passed password verifier. If empty, no valid password has been + found, or the user has chosen to cancel password input. + */ + css::uno::Sequence< css::beans::NamedValue > requestAndVerifyDocPassword( + comphelper::IDocPasswordVerifier& rVerifier, + comphelper::DocPasswordRequestType eRequestType, + const ::std::vector< OUString >* pDefaultPasswords ); + + // helper + private: + + /** @short tries to open a stream by using the given PostData stream. + + @descr The stream is used directly ... + + The MediaDescriptor itself is changed inside this method. + Means: the stream is added internal and not returned by a value. + + @param _rxPostData + the PostData stream. + + @return TRUE if the stream could be added successfully. + Note: If FALSE is returned, the error was already handled inside! + + @throw [css::uno::RuntimeException] + if the MediaDescriptor seems to be invalid! + + @throw [css::lang::IllegalArgumentException] + if the given PostData stream is <NULL/>. + */ + SAL_DLLPRIVATE bool impl_openStreamWithPostData( + const css::uno::Reference< css::io::XInputStream >& _rxPostData + ); + + /** @short tries to open a stream by using the given URL. + + @descr First it tries to open the content in r/w mode (if its + allowed to do so). Only in case it's not allowed or it failed + the stream will be tried to open in readonly mode. + + The MediaDescriptor itself is changed inside this method. + Means: the stream is added internal and not returned by a value. + + @param sURL + the URL for open. + + @param bLockFile + specifies whether the file should be locked + + @return TRUE if the stream could be added successfully. + Note: If FALSE is returned, the error was already handled inside! + + @throw [css::uno::RuntimeException] + if the MediaDescriptor seems to be invalid! + */ + SAL_DLLPRIVATE bool impl_openStreamWithURL( + const OUString& sURL, + bool bLockFile + ); + + /** @short it checks if the descriptor already has a valid + InputStream item and creates a new one, if not. + + @descr This method uses the current items of this MediaDescriptor, + to open the stream (as e.g. URL, ReadOnly, PostData etcpp.). + It creates a seekable stream and put it into the descriptor. + + A might existing InteractionHandler will be used automatically, + to solve problems! + + @param bLockFile + specifies whether the file should be locked + + @return TRUE, if the stream was already part of the descriptor or could + be created as new item. FALSE otherwise. + */ + SAL_DLLPRIVATE bool impl_addInputStream( bool bLockFile ); +}; + +} + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |