vcl/ios/DataFlavorMapping.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   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_VCL_IOS_DATAFLAVORMAPPING_HXX
  21 #define INCLUDED_VCL_IOS_DATAFLAVORMAPPING_HXX
  22
  23 #include <com/sun/star/datatransfer/DataFlavor.hpp>
  24 #include <com/sun/star/datatransfer/XMimeContentTypeFactory.hpp>
  25 #include <com/sun/star/datatransfer/XTransferable.hpp>
  26 #include <com/sun/star/lang/XMultiComponentFactory.hpp>
  27
  28 #include <premac.h>
  29 #import <UIKit/UIKit.h>
  30 #include <postmac.h>
  31
  32 #include <memory>
  33 #include <unordered_map>
  34
  35 /* An interface to get the clipboard data in either
  36    system or OOo format.
  37  */
  38 class DataProvider
  39 {
  40 public:
  41     virtual ~DataProvider(){};
  42
  43     /* Get the clipboard data in the system format.
  44      The caller has to retain/release the returned
  45      CFDataRef on demand.
  46    */
  47     virtual NSData* getSystemData() = 0;
  48
  49     /* Get the clipboard data in OOo format.
  50    */
  51     virtual css::uno::Any getOOoData() = 0;
  52 };
  53
  54 typedef std::unique_ptr<DataProvider> DataProviderPtr_t;
  55
  56 class DataFlavorMapper
  57 {
  58 public:
  59     /* Initialize a DataFavorMapper instance. Throws a RuntimeException in case the XMimeContentTypeFactory service
  60      cannot be created.
  61    */
  62     DataFlavorMapper();
  63     ~DataFlavorMapper();
  64
  65     /* Map a system data flavor to an OpenOffice data flavor.
  66      Return an empty string if there is not suitable
  67      mapping from a system data flavor to an OpenOffice data
  68      flavor.
  69   */
  70     css::datatransfer::DataFlavor systemToOpenOfficeFlavor(const NSString* systemDataFlavor) const;
  71
  72     /* Map an OpenOffice data flavor to a system data flavor.
  73      If there is no suitable mapping available NULL will
  74      be returned.
  75   */
  76     NSString* openOfficeToSystemFlavor(const css::datatransfer::DataFlavor& oooDataFlavor,
  77                                        bool& rbInternal) const;
  78
  79     /* Select the best available image data type
  80      If there is no suitable mapping available NULL will
  81      be returned.
  82   */
  83     static NSString* openOfficeImageToSystemFlavor();
  84
  85     /* Get a data provider which is able to provide the data 'rTransferable' offers in a format that can
  86      be put on to the system clipboard.
  87    */
  88     DataProviderPtr_t getDataProvider(
  89         const NSString* systemFlavor,
  90         const css::uno::Reference<css::datatransfer::XTransferable>& rTransferable) const;
  91
  92     /* Get a data provider which is able to provide 'systemData' in the OOo expected format.
  93    */
  94     static DataProviderPtr_t getDataProvider(const NSString* systemFlavor, NSArray* systemData);
  95
  96     /* Get a data provider which is able to provide 'systemData' in the OOo expected format.
  97    */
  98     static DataProviderPtr_t getDataProvider(const NSString* systemFlavor, NSData* systemData);
  99
 100     /* Translate a sequence of DataFlavors into a NSArray of system types.
 101      Only those DataFlavors for which a suitable mapping to a system
 102      type exist will be contained in the returned types array.
 103    */
 104     NSArray* flavorSequenceToTypesArray(
 105         const css::uno::Sequence<css::datatransfer::DataFlavor>& flavors) const;
 106
 107     /* Translate a NSArray of system types into a sequence of DataFlavors.
 108      Only those types for which a suitable mapping to a DataFlavor
 109      exist will be contained in the new DataFlavor Sequence.
 110   */
 111     css::uno::Sequence<css::datatransfer::DataFlavor>
 112     typesArrayToFlavorSequence(NSArray* types) const;
 113
 114 private:
 115     /* Determines if the provided Mime content type is valid.
 116    */
 117     bool isValidMimeContentType(const OUString& contentType) const;
 118
 119 private:
 120     css::uno::Reference<css::datatransfer::XMimeContentTypeFactory> mrXMimeCntFactory;
 121     typedef std::unordered_map<OUString, NSString*> OfficeOnlyTypes;
 122     mutable OfficeOnlyTypes maOfficeOnlyTypes;
 123 };
 124
 125 #endif // INCLUDED_VCL_IOS_DATAFLAVORMAPPING_HXX
 126
 127 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */