summaryrefslogtreecommitdiff
path: root/vcl/ios/iOSTransferable.cxx
blob: bfbc8a9afa8291be57deb2106dd861c51894d441 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
 * 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 .
 */

#include <sal/config.h>

#include <com/sun/star/datatransfer/UnsupportedFlavorException.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <sal/log.hxx>
#include <sal/types.h>
#include <osl/diagnose.h>

#include <quartz/utils.h>

#include "iOSTransferable.hxx"

#include "DataFlavorMapping.hxx"

using namespace osl;
using namespace cppu;
using namespace com::sun::star::uno;
using namespace com::sun::star::datatransfer;
using namespace com::sun::star::lang;

namespace
{
bool isValidFlavor(const DataFlavor& aFlavor)
{
    size_t len = aFlavor.MimeType.getLength();
    Type dtype = aFlavor.DataType;
    return ((len > 0)
            && ((dtype == cppu::UnoType<Sequence<sal_Int8>>::get())
                || (dtype == cppu::UnoType<OUString>::get())));
}

bool cmpAllContentTypeParameter(const Reference<XMimeContentType>& xLhs,
                                const Reference<XMimeContentType>& xRhs)
{
    Sequence<OUString> xLhsFlavors = xLhs->getParameters();
    Sequence<OUString> xRhsFlavors = xRhs->getParameters();

    // Stop here if the number of parameters is different already
    if (xLhsFlavors.getLength() != xRhsFlavors.getLength())
        return false;

    try
    {
        OUString pLhs;
        OUString pRhs;

        for (sal_Int32 i = 0; i < xLhsFlavors.getLength(); i++)
        {
            pLhs = xLhs->getParameterValue(xLhsFlavors[i]);
            pRhs = xRhs->getParameterValue(xLhsFlavors[i]);

            if (!pLhs.equalsIgnoreAsciiCase(pRhs))
            {
                return false;
            }
        }
    }
    catch (IllegalArgumentException&)
    {
        return false;
    }

    return true;
}

} // unnamed namespace

iOSTransferable::iOSTransferable(const Reference<XMimeContentTypeFactory>& rXMimeCntFactory,
                                 std::shared_ptr<DataFlavorMapper> pDataFlavorMapper)
    : mrXMimeCntFactory(rXMimeCntFactory)
    , mDataFlavorMapper(pDataFlavorMapper)
{
    initClipboardItemList();
}

iOSTransferable::~iOSTransferable() {}

Any SAL_CALL iOSTransferable::getTransferData(const DataFlavor& aFlavor)
{
    if (!isValidFlavor(aFlavor) || !isDataFlavorSupported(aFlavor))
    {
        throw UnsupportedFlavorException("Unsupported data flavor",
                                         static_cast<XTransferable*>(this));
    }

    bool bInternal(false);
    NSString* sysFormat = (aFlavor.MimeType.startsWith("image/png"))
                              ? DataFlavorMapper::openOfficeImageToSystemFlavor()
                              : mDataFlavorMapper->openOfficeToSystemFlavor(aFlavor, bInternal);
    DataProviderPtr_t dp;

    NSData* sysData = [[UIPasteboard generalPasteboard] dataForPasteboardType:sysFormat];
    if (!sysData)
    {
        // Related: gh#5908 throw an exception if the data flavor is nil
        // If nil is returned, it can mean that the user has selected the
        // "disallow" option and so we can't access the current clipboard
        // contents. Also, by throwing an exception, the "allow or disallow"
        // dialog will display again the next time the user tries to paste.
        throw UnsupportedFlavorException("Data flavor is nil", static_cast<XTransferable*>(this));
    }

    dp = DataFlavorMapper::getDataProvider(sysFormat, sysData);

    if (dp.get() == nullptr)
    {
        throw UnsupportedFlavorException("Unsupported data flavor",
                                         static_cast<XTransferable*>(this));
    }

    return dp->getOOoData();
}

Sequence<DataFlavor> SAL_CALL iOSTransferable::getTransferDataFlavors() { return mFlavorList; }

sal_Bool SAL_CALL iOSTransferable::isDataFlavorSupported(const DataFlavor& aFlavor)
{
    for (sal_Int32 i = 0; i < mFlavorList.getLength(); i++)
        if (compareDataFlavors(aFlavor, mFlavorList[i]))
            return true;

    return false;
}

void iOSTransferable::initClipboardItemList()
{
    NSArray* pboardFormats = [[UIPasteboard generalPasteboard] pasteboardTypes];

    if (pboardFormats == nullptr)
    {
        throw RuntimeException("Cannot get clipboard data", static_cast<XTransferable*>(this));
    }

    SAL_INFO("vcl.ios.clipboard", "Types on clipboard: " << NSStringArrayToOUString(pboardFormats));

    mFlavorList = mDataFlavorMapper->typesArrayToFlavorSequence(pboardFormats);
}

/* Compares two DataFlavors. Returns true if both DataFlavor have the same media type
   and the number of parameter and all parameter values do match otherwise false
   is returned.
 */
bool iOSTransferable::compareDataFlavors(const DataFlavor& lhs, const DataFlavor& rhs)
{
    try
    {
        Reference<XMimeContentType> xLhs(mrXMimeCntFactory->createMimeContentType(lhs.MimeType));
        Reference<XMimeContentType> xRhs(mrXMimeCntFactory->createMimeContentType(rhs.MimeType));

        if (!xLhs->getFullMediaType().equalsIgnoreAsciiCase(xRhs->getFullMediaType())
            || !cmpAllContentTypeParameter(xLhs, xRhs))
        {
            return false;
        }
    }
    catch (IllegalArgumentException&)
    {
        OSL_FAIL("Invalid content type detected");
        return false;
    }

    return true;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */