Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 339 insertions, 0 deletions

diff --git a/include/unotools/mediadescriptor.hxx b/include/unotools/mediadescriptor.hxx
new file mode 100644
index 000000000..92728fa51
--- /dev/null
+++ b/include/unotools/mediadescriptor.hxx
@@ -0,0 +1,339 @@
+/* -*- 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 constexpr OUStringLiteral PROP_ABORTED = u"Aborted";
+        static constexpr OUStringLiteral PROP_ASTEMPLATE = u"AsTemplate";
+        static constexpr OUStringLiteral PROP_COMPONENTDATA = u"ComponentData";
+        static constexpr OUStringLiteral PROP_DOCUMENTSERVICE = u"DocumentService";
+        static constexpr OUStringLiteral PROP_ENCRYPTIONDATA = u"EncryptionData";
+        static constexpr OUStringLiteral PROP_FILENAME = u"FileName";
+        static constexpr OUStringLiteral PROP_FILTERNAME = u"FilterName";
+        static constexpr OUStringLiteral PROP_FILTERPROVIDER = u"FilterProvider";
+        static constexpr OUStringLiteral PROP_FILTEROPTIONS = u"FilterOptions";
+        static constexpr OUStringLiteral PROP_FRAME = u"Frame";
+        static constexpr OUStringLiteral PROP_FRAMENAME = u"FrameName";
+        static constexpr OUStringLiteral PROP_HIDDEN = u"Hidden";
+        static constexpr OUStringLiteral PROP_INPUTSTREAM = u"InputStream";
+        static constexpr OUStringLiteral PROP_INTERACTIONHANDLER = u"InteractionHandler";
+        static constexpr OUStringLiteral PROP_AUTHENTICATIONHANDLER = u"AuthenticationHandler";
+        static constexpr OUStringLiteral PROP_JUMPMARK = u"JumpMark";
+        static constexpr OUStringLiteral PROP_MACROEXECUTIONMODE = u"MacroExecutionMode";
+        static constexpr OUStringLiteral PROP_MEDIATYPE = u"MediaType";
+        static constexpr OUStringLiteral PROP_MINIMIZED = u"Minimized";
+        static constexpr OUStringLiteral PROP_NOAUTOSAVE = u"NoAutoSave";
+        static constexpr OUStringLiteral PROP_OPENNEWVIEW = u"OpenNewView";
+        static constexpr OUStringLiteral PROP_OUTPUTSTREAM = u"OutputStream";
+        static constexpr OUStringLiteral PROP_PASSWORD = u"Password";
+        static constexpr OUStringLiteral PROP_POSTDATA = u"PostData";
+        static constexpr OUStringLiteral PROP_PREVIEW = u"Preview";
+        static constexpr OUStringLiteral PROP_READONLY = u"ReadOnly";
+        static constexpr OUStringLiteral PROP_REFERRER = u"Referer";
+        static constexpr OUStringLiteral PROP_REPLACEABLE = u"Replaceable";
+        static constexpr OUStringLiteral PROP_SALVAGEDFILE = u"SalvagedFile";
+        static constexpr OUStringLiteral PROP_STATUSINDICATOR = u"StatusIndicator";
+        static constexpr OUStringLiteral PROP_STREAM = u"Stream";
+        static constexpr OUStringLiteral PROP_STREAMFOROUTPUT = u"StreamForOutput";
+        static constexpr OUStringLiteral PROP_TEMPLATENAME = u"TemplateName";
+        static constexpr OUStringLiteral PROP_TITLE = u"Title";
+        static constexpr OUStringLiteral PROP_TYPENAME = u"TypeName";
+        static constexpr OUStringLiteral PROP_UCBCONTENT = u"UCBContent";
+        static constexpr OUStringLiteral PROP_UPDATEDOCMODE = u"UpdateDocMode";
+        static constexpr OUStringLiteral PROP_URL = u"URL";
+        static constexpr OUStringLiteral PROP_VERSION = u"Version";
+        static constexpr OUStringLiteral PROP_DOCUMENTTITLE = u"DocumentTitle";
+        static constexpr OUStringLiteral PROP_MODEL = u"Model";
+        static constexpr OUStringLiteral PROP_VIEWONLY = u"ViewOnly";
+        static constexpr OUStringLiteral PROP_DOCUMENTBASEURL = u"DocumentBaseURL";
+        static constexpr OUStringLiteral PROP_SUGGESTEDSAVEASNAME = u"SuggestedSaveAsName";
+        static constexpr OUStringLiteral PROP_AUTOSAVEEVENT = u"AutoSaveEvent";
+
+    // 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: */