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