src/kitemviews/private/kfileitemclipboard.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-or-later
   5  */
   6
   7 #include "kfileitemclipboard.h"
   8
   9 #include <KUrlMimeData>
  10
  11 #include <QApplication>
  12 #include <QClipboard>
  13 #include <QMimeData>
  14
  15 class KFileItemClipboardSingleton
  16 {
  17 public:
  18     KFileItemClipboard instance;
  19 };
  20 Q_GLOBAL_STATIC(KFileItemClipboardSingleton, s_KFileItemClipboard)
  21
  22
  23
  24 KFileItemClipboard* KFileItemClipboard::instance()
  25 {
  26     return &s_KFileItemClipboard->instance;
  27 }
  28
  29 bool KFileItemClipboard::isCut(const QUrl& url) const
  30 {
  31     return m_cutItems.contains(url);
  32 }
  33
  34 QList<QUrl> KFileItemClipboard::cutItems() const
  35 {
  36     return m_cutItems.values();
  37 }
  38
  39 KFileItemClipboard::~KFileItemClipboard()
  40 {
  41 }
  42
  43 void KFileItemClipboard::updateCutItems()
  44 {
  45     const QMimeData* mimeData = QApplication::clipboard()->mimeData();
  46
  47     // mimeData can be 0 according to https://bugs.kde.org/show_bug.cgi?id=335053
  48     if (!mimeData) {
  49         m_cutItems.clear();
  50         Q_EMIT cutItemsChanged();
  51         return;
  52     }
  53
  54     const QByteArray data = mimeData->data(QStringLiteral("application/x-kde-cutselection"));
  55     const bool isCutSelection = (!data.isEmpty() && data.at(0) == QLatin1Char('1'));
  56     if (isCutSelection) {
  57         const auto urlsFromMimeData = KUrlMimeData::urlsFromMimeData(mimeData);
  58         m_cutItems = QSet<QUrl>(urlsFromMimeData.constBegin(), urlsFromMimeData.constEnd());
  59     } else {
  60         m_cutItems.clear();
  61     }
  62     Q_EMIT cutItemsChanged();
  63 }
  64
  65 KFileItemClipboard::KFileItemClipboard() :
  66     QObject(nullptr),
  67     m_cutItems()
  68 {
  69     updateCutItems();
  70
  71     connect(QApplication::clipboard(), &QClipboard::dataChanged,
  72             this, &KFileItemClipboard::updateCutItems);
  73 }