src/selectionmode/bottombarcontentscontainer.cpp

   1 /*
   2     This file is part of the KDE project
   3     SPDX-FileCopyrightText: 2022 Felix Ernst <felixernst@zohomail.eu>
   4
   5     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
   6 */
   7
   8 #include "bottombarcontentscontainer.h"
   9
  10 #include "dolphin_generalsettings.h"
  11 #include "dolphincontextmenu.h"
  12 #include "dolphinmainwindow.h"
  13 #include "dolphinremoveaction.h"
  14 #include "kitemviews/kfileitemlisttostring.h"
  15
  16 #include <KLocalizedString>
  17
  18 #include <QHBoxLayout>
  19 #include <QLabel>
  20 #include <QMenu>
  21 #include <QPushButton>
  22 #include <QToolButton>
  23 #include <QVBoxLayout>
  24
  25 #include <unordered_set>
  26
  27 using namespace SelectionMode;
  28
  29 BottomBarContentsContainer::BottomBarContentsContainer(KActionCollection *actionCollection, QWidget *parent) :
  30     QWidget{parent},
  31     m_actionCollection{actionCollection}
  32 {
  33     // We will mostly interact with m_layout when changing the contents and not care about the other internal hierarchy.
  34     m_layout = new QHBoxLayout(this);
  35 }
  36
  37 void BottomBarContentsContainer::resetContents(BottomBar::Contents contents)
  38 {
  39     emptyBarContents();
  40
  41     // A label is added in many of the methods below. We only know its size a bit later and if it should be hidden.
  42     QTimer::singleShot(10, this, [this](){ updateExplanatoryLabelVisibility(); });
  43
  44     Q_CHECK_PTR(m_actionCollection);
  45     m_contents = contents;
  46     switch (contents) {
  47     case BottomBar::CopyContents:
  48         return addCopyContents();
  49     case BottomBar::CopyLocationContents:
  50         return addCopyLocationContents();
  51     case BottomBar::CopyToOtherViewContents:
  52         return addCopyToOtherViewContents();
  53     case BottomBar::CutContents:
  54         return addCutContents();
  55     case BottomBar::DeleteContents:
  56         return addDeleteContents();
  57     case BottomBar::DuplicateContents:
  58         return addDuplicateContents();
  59     case BottomBar::GeneralContents:
  60         return addGeneralContents();
  61     case BottomBar::PasteContents:
  62         return addPasteContents();
  63     case BottomBar::MoveToOtherViewContents:
  64         return addMoveToOtherViewContents();
  65     case BottomBar::MoveToTrashContents:
  66         return addMoveToTrashContents();
  67     case BottomBar::RenameContents:
  68         return addRenameContents();
  69     }
  70 }
  71
  72 void BottomBarContentsContainer::adaptToNewBarWidth(int newBarWidth)
  73 {
  74     m_barWidth = newBarWidth;
  75
  76     if (m_contents == BottomBar::GeneralContents) {
  77         Q_ASSERT(m_overflowButton);
  78         if (unusedSpace() < 0) {
  79             // The bottom bar is overflowing! We need to hide some of the widgets.
  80             for (auto i = m_generalBarActions.rbegin(); i != m_generalBarActions.rend(); ++i) {
  81                 if (!i->isWidgetVisible()) {
  82                     continue;
  83                 }
  84                 i->widget()->setVisible(false);
  85
  86                 // Add the action to the overflow.
  87                 auto overflowMenu = m_overflowButton->menu();
  88                 if (overflowMenu->actions().isEmpty()) {
  89                     overflowMenu->addAction(i->action());
  90                 } else {
  91                     overflowMenu->insertAction(overflowMenu->actions().at(0), i->action());
  92                 }
  93                 m_overflowButton->setVisible(true);
  94                 if (unusedSpace() >= 0) {
  95                     break; // All widgets fit now.
  96                 }
  97             }
  98         } else {
  99             // We have some unusedSpace(). Let's check if we can maybe add more of the contextual actions' widgets.
 100             for (auto i = m_generalBarActions.begin(); i != m_generalBarActions.end(); ++i) {
 101                 if (i->isWidgetVisible()) {
 102                     continue;
 103                 }
 104                 if (!i->widget()) {
 105                     i->newWidget(this);
 106                     i->widget()->setVisible(false);
 107                     m_layout->insertWidget(m_layout->count() - 1, i->widget()); // Insert before m_overflowButton
 108                 }
 109                 if (unusedSpace() < i->widget()->sizeHint().width()) {
 110                     // It doesn't fit. We keep it invisible.
 111                     break;
 112                 }
 113                 i->widget()->setVisible(true);
 114
 115                 // Remove the action from the overflow.
 116                 auto overflowMenu = m_overflowButton->menu();
 117                 overflowMenu->removeAction(i->action());
 118                 if (overflowMenu->isEmpty()) {
 119                     m_overflowButton->setVisible(false);
 120                 }
 121             }
 122         }
 123     }
 124
 125     // Hide the leading explanation if it doesn't fit. The buttons are labeled clear enough that this shouldn't be a big UX problem.
 126     updateExplanatoryLabelVisibility();
 127 }
 128
 129 void BottomBarContentsContainer::slotSelectionChanged(const KFileItemList &selection, const QUrl &baseUrl)
 130 {
 131     if (m_contents == BottomBar::GeneralContents) {
 132         auto contextActions = contextActionsFor(selection, baseUrl);
 133         m_generalBarActions.clear();
 134         if (contextActions.empty()) {
 135             // We have nothing to show
 136             Q_ASSERT(qobject_cast<BottomBar *>(parentWidget()->parentWidget()->parentWidget()));
 137             if (isVisibleTo(parentWidget()->parentWidget()->parentWidget()->parentWidget())) { // is the bar visible
 138                 Q_EMIT barVisibilityChangeRequested(false);
 139             }
 140         } else {
 141             for (auto i = contextActions.begin(); i != contextActions.end(); ++i) {
 142                 m_generalBarActions.emplace_back(ActionWithWidget{*i});
 143             }
 144             resetContents(BottomBar::GeneralContents);
 145
 146             Q_EMIT barVisibilityChangeRequested(true);
 147         }
 148     }
 149     updateMainActionButton(selection);
 150 }
 151
 152 void BottomBarContentsContainer::addCopyContents()
 153 {
 154     m_explanatoryLabel = new QLabel(i18nc("@info explaining the next step in a process", "Select the files and folders that should be copied."), this);
 155     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 156     m_explanatoryLabel->setWordWrap(true);
 157     m_layout->addWidget(m_explanatoryLabel);
 158
 159     // i18n: Aborts the current step-by-step process to copy files by leaving the selection mode.
 160     auto *cancelButton = new QPushButton(QIcon::fromTheme(QStringLiteral("dialog-cancel")), i18nc("@action:button", "Cancel Copying"), this);
 161     connect(cancelButton, &QAbstractButton::clicked, this, &BottomBarContentsContainer::selectionModeLeavingRequested);
 162     m_layout->addWidget(cancelButton);
 163
 164     auto *copyButton = new QPushButton(this);
 165     // We claim to have PasteContents already so triggering the copy action next won't instantly hide the bottom bar.
 166     connect(copyButton, &QAbstractButton::clicked, [this]() {
 167         if (GeneralSettings::showPasteBarAfterCopying()) {
 168             m_contents = BottomBar::Contents::PasteContents; // prevents hiding
 169         }
 170     });
 171     // Connect the copy action as a second step.
 172     m_mainAction = ActionWithWidget(m_actionCollection->action(KStandardAction::name(KStandardAction::Copy)), copyButton);
 173     // Finally connect the lambda that actually changes the contents to the PasteContents.
 174     connect(copyButton, &QAbstractButton::clicked, [this]() {
 175         if (GeneralSettings::showPasteBarAfterCopying()) {
 176             resetContents(BottomBar::Contents::PasteContents); // resetContents() needs to be connected last because
 177                 // it instantly deletes the button and then the other slots won't be called.
 178         }
 179         Q_EMIT selectionModeLeavingRequested();
 180     });
 181     updateMainActionButton(KFileItemList());
 182     m_layout->addWidget(copyButton);
 183 }
 184
 185 void BottomBarContentsContainer::addCopyLocationContents()
 186 {
 187     m_explanatoryLabel = new QLabel(i18nc("@info explaining the next step in a process", "Select one file or folder whose location should be copied."), this);
 188     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 189     m_explanatoryLabel->setWordWrap(true);
 190     m_layout->addWidget(m_explanatoryLabel);
 191
 192     // i18n: Aborts the current step-by-step process to copy the location of files by leaving the selection mode.
 193     auto *cancelButton = new QPushButton(QIcon::fromTheme(QStringLiteral("dialog-cancel")), i18nc("@action:button", "Cancel Copying"), this);
 194     connect(cancelButton, &QAbstractButton::clicked, this, &BottomBarContentsContainer::selectionModeLeavingRequested);
 195     m_layout->addWidget(cancelButton);
 196
 197     auto *copyLocationButton = new QPushButton(this);
 198     m_mainAction = ActionWithWidget(m_actionCollection->action(QStringLiteral("copy_location")), copyLocationButton);
 199     updateMainActionButton(KFileItemList());
 200     m_layout->addWidget(copyLocationButton);
 201 }
 202
 203 void BottomBarContentsContainer::addCopyToOtherViewContents()
 204 {
 205     // i18n: "Copy over" refers to copying to the other split view area that is currently visible to the user.
 206     m_explanatoryLabel = new QLabel(i18nc("@info explaining the next step in a process", "Select the files and folders that should be copied over."), this);
 207     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 208     m_explanatoryLabel->setWordWrap(true);
 209     m_layout->addWidget(m_explanatoryLabel);
 210
 211     // i18n: Aborts the current step-by-step process to copy the location of files by leaving the selection mode.
 212     auto *cancelButton = new QPushButton(QIcon::fromTheme(QStringLiteral("dialog-cancel")), i18nc("@action:button", "Cancel Copying"), this);
 213     connect(cancelButton, &QAbstractButton::clicked, this, &BottomBarContentsContainer::selectionModeLeavingRequested);
 214     m_layout->addWidget(cancelButton);
 215
 216     auto *copyToOtherViewButton = new QPushButton(this);
 217     m_mainAction = ActionWithWidget(m_actionCollection->action(QStringLiteral("copy_to_inactive_split_view")), copyToOtherViewButton);
 218     updateMainActionButton(KFileItemList());
 219     m_layout->addWidget(copyToOtherViewButton);
 220 }
 221
 222 void BottomBarContentsContainer::addCutContents()
 223 {
 224     m_explanatoryLabel = new QLabel(i18nc("@info explaining the next step in a process", "Select the files and folders that should be cut."), this);
 225     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 226     m_explanatoryLabel->setWordWrap(true);
 227     m_layout->addWidget(m_explanatoryLabel);
 228
 229     // i18n: Aborts the current step-by-step process to cut files by leaving the selection mode.
 230     auto *cancelButton = new QPushButton(QIcon::fromTheme(QStringLiteral("dialog-cancel")), i18nc("@action:button", "Cancel Cutting"), this);
 231     connect(cancelButton, &QAbstractButton::clicked, this, &BottomBarContentsContainer::selectionModeLeavingRequested);
 232     m_layout->addWidget(cancelButton);
 233
 234     auto *cutButton = new QPushButton(this);
 235     // We claim to have PasteContents already so triggering the cut action next won't instantly hide the bottom bar.
 236     connect(cutButton, &QAbstractButton::clicked, [this]() {
 237         if (GeneralSettings::showPasteBarAfterCopying()) {
 238             m_contents = BottomBar::Contents::PasteContents; // prevents hiding
 239         }
 240     });
 241     // Connect the cut action as a second step.
 242     m_mainAction = ActionWithWidget(m_actionCollection->action(KStandardAction::name(KStandardAction::Cut)), cutButton);
 243     // Finally connect the lambda that actually changes the contents to the PasteContents.
 244     connect(cutButton, &QAbstractButton::clicked, [this](){
 245         if (GeneralSettings::showPasteBarAfterCopying()) {
 246             resetContents(BottomBar::Contents::PasteContents); // resetContents() needs to be connected last because
 247                 // it instantly deletes the button and then the other slots won't be called.
 248         }
 249         Q_EMIT selectionModeLeavingRequested();
 250     });
 251     updateMainActionButton(KFileItemList());
 252     m_layout->addWidget(cutButton);
 253 }
 254
 255 void BottomBarContentsContainer::addDeleteContents()
 256 {
 257     m_explanatoryLabel = new QLabel(i18nc("@info explaining the next step in a process", "Select the files and folders that should be permanently deleted."), this);
 258     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 259     m_explanatoryLabel->setWordWrap(true);
 260     m_layout->addWidget(m_explanatoryLabel);
 261
 262     // i18n: Aborts the current step-by-step process to delete files by leaving the selection mode.
 263     auto *cancelButton = new QPushButton(QIcon::fromTheme(QStringLiteral("dialog-cancel")), i18nc("@action:button", "Cancel"), this);
 264     connect(cancelButton, &QAbstractButton::clicked, this, &BottomBarContentsContainer::selectionModeLeavingRequested);
 265     m_layout->addWidget(cancelButton);
 266
 267     auto *deleteButton = new QPushButton(this);
 268     m_mainAction = ActionWithWidget(m_actionCollection->action(KStandardAction::name(KStandardAction::DeleteFile)), deleteButton);
 269     updateMainActionButton(KFileItemList());
 270     m_layout->addWidget(deleteButton);
 271 }
 272
 273 void BottomBarContentsContainer::addDuplicateContents()
 274 {
 275     m_explanatoryLabel = new QLabel(i18nc("@info explaining the next step in a process", "Select the files and folders that should be duplicated here."), this);
 276     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 277     m_explanatoryLabel->setWordWrap(true);
 278     m_layout->addWidget(m_explanatoryLabel);
 279
 280     // i18n: Aborts the current step-by-step process to duplicate files by leaving the selection mode.
 281     auto *cancelButton = new QPushButton(QIcon::fromTheme(QStringLiteral("dialog-cancel")), i18nc("@action:button", "Cancel Duplicating"), this);
 282     connect(cancelButton, &QAbstractButton::clicked, this, &BottomBarContentsContainer::selectionModeLeavingRequested);
 283     m_layout->addWidget(cancelButton);
 284
 285     auto *duplicateButton = new QPushButton(this);
 286     m_mainAction = ActionWithWidget(m_actionCollection->action(QStringLiteral("duplicate")), duplicateButton);
 287     updateMainActionButton(KFileItemList());
 288     m_layout->addWidget(duplicateButton);
 289 }
 290
 291 void BottomBarContentsContainer::addGeneralContents()
 292 {
 293     if (!m_overflowButton) {
 294         // i18n: This button appears in a bar if there isn't enough horizontal space to fit all the other buttons so please keep it short.
 295         // The small button opens a menu that contains the actions that didn't fit on the bar.
 296         m_overflowButton = new QPushButton{QIcon::fromTheme(QStringLiteral("view-more-symbolic")), i18nc("@action keep short", "More"), this};
 297         m_overflowButton->setMenu(new QMenu{m_overflowButton});
 298         m_overflowButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::MinimumExpanding); // Makes sure it has the same height as the labeled buttons.
 299         m_layout->addWidget(m_overflowButton);
 300     } else {
 301         m_overflowButton->menu()->actions().clear();
 302         // The overflowButton should be part of the calculation for needed space so we set it visible in regards to unusedSpace().
 303         m_overflowButton->setVisible(true);
 304     }
 305
 306     // We first add all the m_generalBarActions to the bar until the bar is full.
 307     auto i = m_generalBarActions.begin();
 308     for (; i != m_generalBarActions.end(); ++i) {
 309         if (i->action()->isVisible()) {
 310             if (i->widget()) {
 311                 i->widget()->setEnabled(i->action()->isEnabled());
 312             } else {
 313                 i->newWidget(this);
 314                 i->widget()->setVisible(false);
 315                 m_layout->insertWidget(m_layout->count() - 1, i->widget()); // Insert before m_overflowButton
 316             }
 317             if (unusedSpace() < i->widget()->sizeHint().width()) {
 318                 break; // The bar is too full already. We keep it invisible.
 319             } else {
 320                 i->widget()->setVisible(true);
 321             }
 322         }
 323     }
 324     // We are done adding widgets to the bar so either we were able to fit all the actions in there
 325     m_overflowButton->setVisible(false);
 326     // …or there are more actions left which need to be put into m_overflowButton.
 327     for (; i != m_generalBarActions.end(); ++i) {
 328         m_overflowButton->menu()->addAction(i->action());
 329
 330         // The overflowButton is set visible if there is actually an action in it.
 331         if (!m_overflowButton->isVisible() && i->action()->isVisible() && !i->action()->isSeparator()) {
 332             m_overflowButton->setVisible(true);
 333         }
 334     }
 335 }
 336
 337 void BottomBarContentsContainer::addMoveToOtherViewContents()
 338 {
 339     // i18n: "Move over" refers to moving to the other split view area that is currently visible to the user.
 340     m_explanatoryLabel = new QLabel(i18nc("@info explaining the next step in a process", "Select the files and folders that should be moved over."), this);
 341     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 342     m_explanatoryLabel->setWordWrap(true);
 343     m_layout->addWidget(m_explanatoryLabel);
 344
 345     // i18n: Aborts the current step-by-step process to copy the location of files by leaving the selection mode.
 346     auto *cancelButton = new QPushButton(QIcon::fromTheme(QStringLiteral("dialog-cancel")), i18nc("@action:button", "Cancel Moving"), this);
 347     connect(cancelButton, &QAbstractButton::clicked, this, &BottomBarContentsContainer::selectionModeLeavingRequested);
 348     m_layout->addWidget(cancelButton);
 349
 350     auto *moveToOtherViewButton = new QPushButton(this);
 351     m_mainAction = ActionWithWidget(m_actionCollection->action(QStringLiteral("move_to_inactive_split_view")), moveToOtherViewButton);
 352     updateMainActionButton(KFileItemList());
 353     m_layout->addWidget(moveToOtherViewButton);
 354 }
 355
 356 void BottomBarContentsContainer::addMoveToTrashContents()
 357 {
 358     m_explanatoryLabel = new QLabel(i18nc("@info explaining the next step in a process", "Select the files and folders that should be moved to the Trash."), this);
 359     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 360     m_explanatoryLabel->setWordWrap(true);
 361     m_layout->addWidget(m_explanatoryLabel);
 362
 363     // i18n: Aborts the current step-by-step process of moving files to the trash by leaving the selection mode.
 364     auto *cancelButton = new QPushButton(QIcon::fromTheme(QStringLiteral("dialog-cancel")), i18nc("@action:button", "Cancel"), this);
 365     connect(cancelButton, &QAbstractButton::clicked, this, &BottomBarContentsContainer::selectionModeLeavingRequested);
 366     m_layout->addWidget(cancelButton);
 367
 368     auto *moveToTrashButton = new QPushButton(this);
 369     m_mainAction = ActionWithWidget(m_actionCollection->action(KStandardAction::name(KStandardAction::MoveToTrash)), moveToTrashButton);
 370     updateMainActionButton(KFileItemList());
 371     m_layout->addWidget(moveToTrashButton);
 372 }
 373
 374 void BottomBarContentsContainer::addPasteContents()
 375 {
 376     m_explanatoryLabel = new QLabel(xi18n("<para>The selected files and folders were added to the Clipboard. "
 377             "Now the <emphasis>Paste</emphasis> action can be used to transfer them from the Clipboard "
 378             "to any other location. They can even be transferred to other applications by using their "
 379             "respective <emphasis>Paste</emphasis> actions.</para>"), this);
 380     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 381     m_explanatoryLabel->setWordWrap(true);
 382     m_layout->addWidget(m_explanatoryLabel);
 383
 384     auto *vBoxLayout = new QVBoxLayout(this);
 385     m_layout->addLayout(vBoxLayout);
 386
 387     /** We are in "PasteContents" mode which means hiding the bottom bar is impossible.
 388      * So we first have to claim that we have different contents before requesting to leave selection mode. */
 389     auto actuallyLeaveSelectionMode = [this]() {
 390         m_contents = BottomBar::Contents::CopyLocationContents;
 391         Q_EMIT selectionModeLeavingRequested();
 392     };
 393
 394     auto *pasteButton = new QPushButton(this);
 395     copyActionDataToButton(pasteButton, m_actionCollection->action(KStandardAction::name(KStandardAction::Paste)));
 396     pasteButton->setText(i18nc("@action A more elaborate and clearly worded version of the Paste action", "Paste from Clipboard"));
 397     connect(pasteButton, &QAbstractButton::clicked, this, actuallyLeaveSelectionMode);
 398     vBoxLayout->addWidget(pasteButton);
 399
 400     auto *dismissButton = new QToolButton(this);
 401     dismissButton->setText(i18nc("@action Dismisses a bar explaining how to use the Paste action", "Dismiss This Reminder"));
 402     connect(dismissButton, &QAbstractButton::clicked, this, actuallyLeaveSelectionMode);
 403     auto *dontRemindAgainAction = new QAction(i18nc("@action Dismisses an explanatory area and never shows it again", "Don't Remind Me Again"), this);
 404     connect(dontRemindAgainAction, &QAction::triggered, this, []() {
 405         GeneralSettings::setShowPasteBarAfterCopying(false);
 406     });
 407     connect(dontRemindAgainAction, &QAction::triggered, this, actuallyLeaveSelectionMode);
 408     auto *dismissButtonMenu = new QMenu(dismissButton);
 409     dismissButtonMenu->addAction(dontRemindAgainAction);
 410     dismissButton->setMenu(dismissButtonMenu);
 411     dismissButton->setPopupMode(QToolButton::MenuButtonPopup);
 412     vBoxLayout->addWidget(dismissButton);
 413
 414     m_explanatoryLabel->setMaximumHeight(pasteButton->sizeHint().height() + dismissButton->sizeHint().height() + m_explanatoryLabel->fontMetrics().height());
 415 }
 416
 417 void BottomBarContentsContainer::addRenameContents()
 418 {
 419     m_explanatoryLabel = new QLabel(i18nc("@info explains the next step in a process", "Select the file or folder that should be renamed.\nBulk renaming is possible when multiple items are selected."), this);
 420     m_explanatoryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
 421     m_explanatoryLabel->setWordWrap(true);
 422     m_layout->addWidget(m_explanatoryLabel);
 423
 424     // i18n: Aborts the current step-by-step process to delete files by leaving the selection mode.
 425     auto *cancelButton = new QPushButton(QIcon::fromTheme(QStringLiteral("dialog-cancel")), i18nc("@action:button", "Cancel Renaming"), this);
 426     connect(cancelButton, &QAbstractButton::clicked, this, &BottomBarContentsContainer::selectionModeLeavingRequested);
 427     m_layout->addWidget(cancelButton);
 428
 429     auto *renameButton = new QPushButton(this);
 430     m_mainAction = ActionWithWidget(m_actionCollection->action(KStandardAction::name(KStandardAction::RenameFile)), renameButton);
 431     updateMainActionButton(KFileItemList());
 432     m_layout->addWidget(renameButton);
 433 }
 434
 435 void BottomBarContentsContainer::emptyBarContents()
 436 {
 437     QLayoutItem *child;
 438     while ((child = m_layout->takeAt(0)) != nullptr) {
 439         if (auto *childLayout = child->layout()) {
 440             QLayoutItem *grandChild;
 441             while ((grandChild = childLayout->takeAt(0)) != nullptr) {
 442                 delete grandChild->widget(); // delete the widget
 443                 delete grandChild;   // delete the layout item
 444             }
 445         }
 446         delete child->widget(); // delete the widget
 447         delete child;   // delete the layout item
 448     }
 449 }
 450
 451 std::vector<QAction *> BottomBarContentsContainer::contextActionsFor(const KFileItemList& selectedItems, const QUrl& baseUrl)
 452 {
 453     if (selectedItems.isEmpty()) {
 454         // There are no contextual actions to show for these items.
 455         // We might even want to hide this bar in this case. To make this clear, we reset m_internalContextMenu.
 456         m_internalContextMenu.release()->deleteLater();
 457         return std::vector<QAction *>{};
 458     }
 459
 460     std::vector<QAction *> contextActions;
 461
 462     // We always want to show the most important actions at the beginning
 463     contextActions.emplace_back(m_actionCollection->action(KStandardAction::name(KStandardAction::Copy)));
 464     contextActions.emplace_back(m_actionCollection->action(KStandardAction::name(KStandardAction::Cut)));
 465     contextActions.emplace_back(m_actionCollection->action(KStandardAction::name(KStandardAction::RenameFile)));
 466     contextActions.emplace_back(m_actionCollection->action(KStandardAction::name(KStandardAction::MoveToTrash)));
 467
 468     // We are going to add the actions from the right-click context menu for the selected items.
 469     auto *dolphinMainWindow = qobject_cast<DolphinMainWindow *>(window());
 470     Q_CHECK_PTR(dolphinMainWindow);
 471     if (!m_fileItemActions) {
 472         m_fileItemActions = new KFileItemActions(this);
 473         m_fileItemActions->setParentWidget(dolphinMainWindow);
 474         connect(m_fileItemActions, &KFileItemActions::error, this, &BottomBarContentsContainer::error);
 475     }
 476     m_internalContextMenu = std::make_unique<DolphinContextMenu>(dolphinMainWindow, selectedItems.constFirst(), selectedItems, baseUrl, m_fileItemActions);
 477     auto internalContextMenuActions = m_internalContextMenu->actions();
 478
 479     // There are some actions which we wouldn't want to add. We remember them in the actionsThatShouldntBeAdded set.
 480     // We don't want to add the four basic actions again which were already added to the top.
 481     std::unordered_set<QAction *> actionsThatShouldntBeAdded{contextActions.begin(), contextActions.end()};
 482     // "Delete" isn't really necessary to add because we have "Move to Trash" already. It is also more dangerous so let's exclude it.
 483     actionsThatShouldntBeAdded.insert(m_actionCollection->action(KStandardAction::name(KStandardAction::DeleteFile)));
 484
 485     // KHamburgerMenu would only be visible if there is no menu available anywhere on the user interface. This might be useful for recovery from
 486     // such a situation in theory but a bar with context dependent actions doesn't really seem like the right place for it.
 487     Q_ASSERT(internalContextMenuActions.first()->icon().name() == m_actionCollection->action(KStandardAction::name(KStandardAction::HamburgerMenu))->icon().name());
 488     internalContextMenuActions.removeFirst();
 489
 490     for (auto it = internalContextMenuActions.constBegin(); it != internalContextMenuActions.constEnd(); ++it) {
 491         if (actionsThatShouldntBeAdded.count(*it)) {
 492             continue; // Skip this action.
 493         }
 494         if (!qobject_cast<DolphinRemoveAction *>(*it)) { // We already have a "Move to Trash" action so we don't want a DolphinRemoveAction.
 495             // We filter duplicate separators here so we won't have to deal with them later.
 496             if (!contextActions.back()->isSeparator() || !(*it)->isSeparator()) {
 497                 contextActions.emplace_back((*it));
 498             }
 499         }
 500     }
 501     return contextActions;
 502 }
 503
 504 int BottomBarContentsContainer::unusedSpace() const
 505 {
 506     int sumOfPreferredWidths = m_layout->contentsMargins().left() + m_layout->contentsMargins().right();
 507     if (m_overflowButton) {
 508         sumOfPreferredWidths += m_overflowButton->sizeHint().width();
 509     }
 510     for (int i = 0; i < m_layout->count(); ++i) {
 511         auto widget = m_layout->itemAt(i)->widget();
 512         if (widget && !widget->isVisibleTo(widget->parentWidget())) {
 513             continue; // We don't count invisible widgets.
 514         }
 515         sumOfPreferredWidths += m_layout->itemAt(i)->sizeHint().width() + m_layout->spacing();
 516     }
 517     return m_barWidth - sumOfPreferredWidths - 20; // We consider all space used when there are only 20 pixels left
 518                                                       // so there is some room to breath and not too much wonkyness while resizing.
 519 }
 520
 521 void BottomBarContentsContainer::updateExplanatoryLabelVisibility()
 522 {
 523     if (!m_explanatoryLabel) {
 524         return;
 525     }
 526     if (m_explanatoryLabel->isVisible()) {
 527         m_explanatoryLabel->setVisible(unusedSpace() > 0);
 528     } else {
 529         // We only want to re-show the label when it fits comfortably so the computation below adds another "+20".
 530         m_explanatoryLabel->setVisible(unusedSpace() > m_explanatoryLabel->sizeHint().width() + 20);
 531     }
 532 }
 533
 534 void BottomBarContentsContainer::updateMainActionButton(const KFileItemList& selectedItems)
 535 {
 536     if (!m_mainAction.widget()) {
 537         return;
 538     }
 539     Q_ASSERT(qobject_cast<QAbstractButton *>(m_mainAction.widget()));
 540
 541     // Users are nudged towards selecting items by having the button disabled when nothing is selected.
 542     m_mainAction.widget()->setEnabled(selectedItems.count() > 0 && m_mainAction.action()->isEnabled());
 543     QFontMetrics fontMetrics = m_mainAction.widget()->fontMetrics();
 544
 545     QString buttonText;
 546     switch (m_contents) {
 547     case BottomBar::CopyContents:
 548         // i18n: A more elaborate and clearly worded version of the Copy action
 549         // %2 is a textual representation of the currently selected files or folders. This can be the name of
 550         // the file/files like "file1" or "file1, file2 and file3" or an aggregate like "8 Selected Folders".
 551         // If this sort of word puzzle can not be correctly translated in your language, translate it as "NULL" (without the quotes)
 552         // and a fallback will be used.
 553         buttonText = i18ncp("@action", "Copy %2 to the Clipboard", "Copy %2 to the Clipboard", selectedItems.count(), fileItemListToString(selectedItems, fontMetrics.averageCharWidth() * 20, fontMetrics));
 554         // All these long lines can not be broken up with line breaks becaue the i18n call should be completely
 555         // in the line following the "i18n:" comment without any line breaks within the i18n call
 556         // or the comment might not be correctly extracted. See: https://commits.kde.org/kxmlgui/a31135046e1b3335b5d7bbbe6aa9a883ce3284c1
 557         break;
 558     case BottomBar::CopyLocationContents:
 559         // i18n: A more elaborate and clearly worded version of the Copy Location action
 560         // %2 is a textual representation of the currently selected files or folders. This can be the name of
 561         // the file/files like "file1" or "file1, file2 and file3" or an aggregate like "8 Selected Folders".
 562         // If this sort of word puzzle can not be correctly translated in your language, translate it as "NULL" (without the quotes)
 563         // and a fallback will be used.
 564         buttonText = i18ncp("@action", "Copy the Location of %2 to the Clipboard", "Copy the Location of %2 to the Clipboard", selectedItems.count(), fileItemListToString(selectedItems, fontMetrics.averageCharWidth() * 20, fontMetrics));
 565         break;
 566     case BottomBar::CutContents:
 567         // i18n: A more elaborate and clearly worded version of the Cut action
 568         // %2 is a textual representation of the currently selected files or folders. This can be the name of
 569         // the file/files like "file1" or "file1, file2 and file3" or an aggregate like "8 Selected Folders".
 570         // If this sort of word puzzle can not be correctly translated in your language, translate it as "NULL" (without the quotes)
 571         // and a fallback will be used.
 572         buttonText = i18ncp("@action", "Cut %2 to the Clipboard", "Cut %2 to the Clipboard", selectedItems.count(), fileItemListToString(selectedItems, fontMetrics.averageCharWidth() * 20, fontMetrics));
 573         break;
 574     case BottomBar::DeleteContents:
 575         // i18n: A more elaborate and clearly worded version of the Delete action
 576         // %2 is a textual representation of the currently selected files or folders. This can be the name of
 577         // the file/files like "file1" or "file1, file2 and file3" or an aggregate like "8 Selected Folders".
 578         // If this sort of word puzzle can not be correctly translated in your language, translate it as "NULL" (without the quotes)
 579         // and a fallback will be used.
 580         buttonText = i18ncp("@action", "Permanently Delete %2", "Permanently Delete %2", selectedItems.count(), fileItemListToString(selectedItems, fontMetrics.averageCharWidth() * 20, fontMetrics));
 581         break;
 582     case BottomBar::DuplicateContents:
 583         // i18n: A more elaborate and clearly worded version of the Duplicate action
 584         // %2 is a textual representation of the currently selected files or folders. This can be the name of
 585         // the file/files like "file1" or "file1, file2 and file3" or an aggregate like "8 Selected Folders".
 586         // If this sort of word puzzle can not be correctly translated in your language, translate it as "NULL" (without the quotes)
 587         // and a fallback will be used.
 588         buttonText = i18ncp("@action", "Duplicate %2", "Duplicate %2", selectedItems.count(), fileItemListToString(selectedItems, fontMetrics.averageCharWidth() * 20, fontMetrics));
 589         break;
 590     case BottomBar::MoveToTrashContents:
 591         // i18n: A more elaborate and clearly worded version of the Trash action
 592         // %2 is a textual representation of the currently selected files or folders. This can be the name of
 593         // the file/files like "file1" or "file1, file2 and file3" or an aggregate like "8 Selected Folders".
 594         // If this sort of word puzzle can not be correctly translated in your language, translate it as "NULL" (without the quotes)
 595         // and a fallback will be used.
 596         buttonText = i18ncp("@action", "Move %2 to the Trash", "Move %2 to the Trash", selectedItems.count(), fileItemListToString(selectedItems, fontMetrics.averageCharWidth() * 20, fontMetrics));
 597         break;
 598     case BottomBar::RenameContents:
 599         // i18n: A more elaborate and clearly worded version of the Rename action
 600         // %2 is a textual representation of the currently selected files or folders. This can be the name of
 601         // the file/files like "file1" or "file1, file2 and file3" or an aggregate like "8 Selected Folders".
 602         // If this sort of word puzzle can not be correctly translated in your language, translate it as "NULL" (without the quotes)
 603         // and a fallback will be used.
 604         buttonText = i18ncp("@action", "Rename %2", "Rename %2", selectedItems.count(), fileItemListToString(selectedItems, fontMetrics.averageCharWidth() * 20, fontMetrics));
 605         break;
 606     default:
 607         return;
 608     }
 609     if (buttonText != QStringLiteral("NULL")) {
 610         static_cast<QAbstractButton *>(m_mainAction.widget())->setText(buttonText);
 611
 612         // The width of the button has changed. We might want to hide the label so the full button text fits on the bar.
 613         updateExplanatoryLabelVisibility();
 614     }
 615 }