src/dolphintabpage.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2014 Emmanuel Pescosta <emmanuelpescosta099@gmail.com>
   3  * SPDX-FileCopyrightText: 2020 Felix Ernst <felixernst@kde.org>
   4  *
   5  * SPDX-License-Identifier: GPL-2.0-or-later
   6  */
   7
   8 #include "dolphintabpage.h"
   9
  10 #include "dolphin_generalsettings.h"
  11 #include "dolphinviewcontainer.h"
  12
  13 #include <QGridLayout>
  14 #include <QStyle>
  15 #include <QVariantAnimation>
  16
  17 DolphinTabPage::DolphinTabPage(const QUrl &primaryUrl, const QUrl &secondaryUrl, QWidget *parent)
  18     : QWidget(parent)
  19     , m_expandingContainer{nullptr}
  20     , m_primaryViewActive(true)
  21     , m_splitViewEnabled(false)
  22     , m_active(true)
  23 {
  24     QGridLayout *layout = new QGridLayout(this);
  25     layout->setSpacing(0);
  26     layout->setContentsMargins(0, 0, 0, 0);
  27
  28     m_splitter = new DolphinTabPageSplitter(Qt::Horizontal, this);
  29     m_splitter->setChildrenCollapsible(false);
  30     connect(m_splitter, &QSplitter::splitterMoved, this, &DolphinTabPage::splitterMoved);
  31     layout->addWidget(m_splitter, 1, 0);
  32     layout->setRowStretch(1, 1);
  33
  34     // Create a new primary view
  35     m_primaryViewContainer = createViewContainer(primaryUrl);
  36     connect(m_primaryViewContainer->view(), &DolphinView::urlChanged, this, &DolphinTabPage::activeViewUrlChanged);
  37     connect(m_primaryViewContainer->view(), &DolphinView::redirection, this, &DolphinTabPage::slotViewUrlRedirection);
  38
  39     m_splitter->addWidget(m_primaryViewContainer);
  40     m_primaryViewContainer->show();
  41
  42     if (secondaryUrl.isValid() || GeneralSettings::splitView()) {
  43         // Provide a secondary view, if the given secondary url is valid or if the
  44         // startup settings are set this way (use the url of the primary view).
  45         m_splitViewEnabled = true;
  46         const QUrl &url = secondaryUrl.isValid() ? secondaryUrl : primaryUrl;
  47         m_secondaryViewContainer = createViewContainer(url);
  48         connect(m_secondaryViewContainer->view(), &DolphinView::redirection, this, &DolphinTabPage::slotViewUrlRedirection);
  49         m_splitter->addWidget(m_secondaryViewContainer);
  50         m_secondaryViewContainer->show();
  51     }
  52
  53     m_primaryViewContainer->setActive(true);
  54 }
  55
  56 bool DolphinTabPage::primaryViewActive() const
  57 {
  58     return m_primaryViewActive;
  59 }
  60
  61 bool DolphinTabPage::splitViewEnabled() const
  62 {
  63     return m_splitViewEnabled;
  64 }
  65
  66 void DolphinTabPage::setSplitViewEnabled(bool enabled, Animated animated, const QUrl &secondaryUrl)
  67 {
  68     if (m_splitViewEnabled != enabled) {
  69         m_splitViewEnabled = enabled;
  70         if (animated == WithAnimation
  71             && (style()->styleHint(QStyle::SH_Widget_Animation_Duration, nullptr, this) < 1 || GlobalConfig::animationDurationFactor() <= 0.0)) {
  72             animated = WithoutAnimation;
  73         }
  74         if (m_expandViewAnimation) {
  75             m_expandViewAnimation->stop(); // deletes because of QAbstractAnimation::DeleteWhenStopped.
  76             if (animated == WithoutAnimation) {
  77                 slotAnimationFinished();
  78             }
  79         }
  80
  81         if (enabled) {
  82             QList<int> splitterSizes = m_splitter->sizes();
  83             const QUrl &url = (secondaryUrl.isEmpty()) ? m_primaryViewContainer->url() : secondaryUrl;
  84             m_secondaryViewContainer = createViewContainer(url);
  85
  86             auto secondaryNavigator = m_navigatorsWidget->secondaryUrlNavigator();
  87             if (!secondaryNavigator) {
  88                 m_navigatorsWidget->createSecondaryUrlNavigator();
  89                 secondaryNavigator = m_navigatorsWidget->secondaryUrlNavigator();
  90             }
  91             m_secondaryViewContainer->connectUrlNavigator(secondaryNavigator);
  92             connect(m_secondaryViewContainer->view(), &DolphinView::redirection, this, &DolphinTabPage::slotViewUrlRedirection);
  93             m_navigatorsWidget->setSecondaryNavigatorVisible(true);
  94             m_navigatorsWidget->followViewContainersGeometry(m_primaryViewContainer, m_secondaryViewContainer);
  95
  96             m_splitter->addWidget(m_secondaryViewContainer);
  97             m_secondaryViewContainer->setActive(true);
  98
  99             if (animated == WithAnimation) {
 100                 m_secondaryViewContainer->setMinimumWidth(1);
 101                 splitterSizes.append(1);
 102                 m_splitter->setSizes(splitterSizes);
 103                 startExpandViewAnimation(m_secondaryViewContainer);
 104             }
 105             m_secondaryViewContainer->show();
 106         } else {
 107             m_navigatorsWidget->setSecondaryNavigatorVisible(false);
 108             m_secondaryViewContainer->disconnectUrlNavigator();
 109             disconnect(m_secondaryViewContainer->view(), &DolphinView::redirection, this, &DolphinTabPage::slotViewUrlRedirection);
 110
 111             DolphinViewContainer *view;
 112             if (GeneralSettings::closeActiveSplitView()) {
 113                 view = activeViewContainer();
 114                 if (m_primaryViewActive) {
 115                     m_primaryViewContainer->disconnectUrlNavigator();
 116                     m_secondaryViewContainer->connectUrlNavigator(m_navigatorsWidget->primaryUrlNavigator());
 117
 118                     // If the primary view is active, we have to swap the pointers
 119                     // because the secondary view will be the new primary view.
 120                     std::swap(m_primaryViewContainer, m_secondaryViewContainer);
 121                     m_primaryViewActive = false;
 122                 }
 123             } else {
 124                 view = m_primaryViewActive ? m_secondaryViewContainer : m_primaryViewContainer;
 125                 if (!m_primaryViewActive) {
 126                     m_primaryViewContainer->disconnectUrlNavigator();
 127                     m_secondaryViewContainer->connectUrlNavigator(m_navigatorsWidget->primaryUrlNavigator());
 128
 129                     // If the secondary view is active, we have to swap the pointers
 130                     // because the secondary view will be the new primary view.
 131                     std::swap(m_primaryViewContainer, m_secondaryViewContainer);
 132                     m_primaryViewActive = true;
 133                 }
 134             }
 135             m_primaryViewContainer->setActive(true);
 136             m_navigatorsWidget->followViewContainersGeometry(m_primaryViewContainer, nullptr);
 137
 138             if (animated == WithoutAnimation) {
 139                 view->close();
 140                 view->deleteLater();
 141             } else {
 142                 // Kill it but keep it as a zombie for the closing animation.
 143                 m_secondaryViewContainer = nullptr;
 144                 view->blockSignals(true);
 145                 view->view()->blockSignals(true);
 146                 view->setDisabled(true);
 147                 startExpandViewAnimation(m_primaryViewContainer);
 148             }
 149
 150             m_primaryViewContainer->slotSplitTabDisabled();
 151         }
 152     }
 153 }
 154
 155 DolphinViewContainer *DolphinTabPage::primaryViewContainer() const
 156 {
 157     return m_primaryViewContainer;
 158 }
 159
 160 DolphinViewContainer *DolphinTabPage::secondaryViewContainer() const
 161 {
 162     return m_secondaryViewContainer;
 163 }
 164
 165 DolphinViewContainer *DolphinTabPage::activeViewContainer() const
 166 {
 167     return m_primaryViewActive ? m_primaryViewContainer : m_secondaryViewContainer;
 168 }
 169
 170 DolphinViewContainer *DolphinTabPage::inactiveViewContainer() const
 171 {
 172     if (!splitViewEnabled()) {
 173         return nullptr;
 174     }
 175
 176     return primaryViewActive() ? secondaryViewContainer() : primaryViewContainer();
 177 }
 178
 179 KFileItemList DolphinTabPage::selectedItems() const
 180 {
 181     KFileItemList items = m_primaryViewContainer->view()->selectedItems();
 182     if (m_splitViewEnabled) {
 183         items += m_secondaryViewContainer->view()->selectedItems();
 184     }
 185     return items;
 186 }
 187
 188 int DolphinTabPage::selectedItemsCount() const
 189 {
 190     int selectedItemsCount = m_primaryViewContainer->view()->selectedItemsCount();
 191     if (m_splitViewEnabled) {
 192         selectedItemsCount += m_secondaryViewContainer->view()->selectedItemsCount();
 193     }
 194     return selectedItemsCount;
 195 }
 196
 197 void DolphinTabPage::connectNavigators(DolphinNavigatorsWidgetAction *navigatorsWidget)
 198 {
 199     insertNavigatorsWidget(navigatorsWidget);
 200     m_navigatorsWidget = navigatorsWidget;
 201     auto primaryNavigator = navigatorsWidget->primaryUrlNavigator();
 202     m_primaryViewContainer->connectUrlNavigator(primaryNavigator);
 203     if (m_splitViewEnabled) {
 204         auto secondaryNavigator = navigatorsWidget->secondaryUrlNavigator();
 205         m_secondaryViewContainer->connectUrlNavigator(secondaryNavigator);
 206     }
 207     m_navigatorsWidget->followViewContainersGeometry(m_primaryViewContainer, m_secondaryViewContainer);
 208 }
 209
 210 void DolphinTabPage::disconnectNavigators()
 211 {
 212     m_navigatorsWidget = nullptr;
 213     m_primaryViewContainer->disconnectUrlNavigator();
 214     if (m_splitViewEnabled) {
 215         m_secondaryViewContainer->disconnectUrlNavigator();
 216     }
 217 }
 218
 219 void DolphinTabPage::insertNavigatorsWidget(DolphinNavigatorsWidgetAction *navigatorsWidget)
 220 {
 221     QGridLayout *gridLayout = static_cast<QGridLayout *>(layout());
 222     if (navigatorsWidget->isInToolbar()) {
 223         gridLayout->setRowMinimumHeight(0, 0);
 224     } else {
 225         // We set a row minimum height, so the height does not visibly change whenever
 226         // navigatorsWidget is inserted which happens every time the current tab is changed.
 227         gridLayout->setRowMinimumHeight(0, navigatorsWidget->primaryUrlNavigator()->height());
 228         gridLayout->addWidget(navigatorsWidget->requestWidget(this), 0, 0);
 229     }
 230 }
 231
 232 void DolphinTabPage::markUrlsAsSelected(const QList<QUrl> &urls)
 233 {
 234     m_primaryViewContainer->view()->markUrlsAsSelected(urls);
 235     if (m_splitViewEnabled) {
 236         m_secondaryViewContainer->view()->markUrlsAsSelected(urls);
 237     }
 238 }
 239
 240 void DolphinTabPage::markUrlAsCurrent(const QUrl &url)
 241 {
 242     m_primaryViewContainer->view()->markUrlAsCurrent(url);
 243     if (m_splitViewEnabled) {
 244         m_secondaryViewContainer->view()->markUrlAsCurrent(url);
 245     }
 246 }
 247
 248 void DolphinTabPage::refreshViews()
 249 {
 250     m_primaryViewContainer->readSettings();
 251     if (m_splitViewEnabled) {
 252         m_secondaryViewContainer->readSettings();
 253     }
 254 }
 255
 256 QByteArray DolphinTabPage::saveState() const
 257 {
 258     QByteArray state;
 259     QDataStream stream(&state, QIODevice::WriteOnly);
 260
 261     stream << quint32(2); // Tab state version
 262
 263     stream << m_splitViewEnabled;
 264
 265     stream << m_primaryViewContainer->url();
 266     stream << m_primaryViewContainer->urlNavigatorInternalWithHistory()->isUrlEditable();
 267     m_primaryViewContainer->view()->saveState(stream);
 268
 269     if (m_splitViewEnabled) {
 270         stream << m_secondaryViewContainer->url();
 271         stream << m_secondaryViewContainer->urlNavigatorInternalWithHistory()->isUrlEditable();
 272         m_secondaryViewContainer->view()->saveState(stream);
 273     }
 274
 275     stream << m_primaryViewActive;
 276     stream << m_splitter->saveState();
 277
 278     return state;
 279 }
 280
 281 void DolphinTabPage::restoreState(const QByteArray &state)
 282 {
 283     if (state.isEmpty()) {
 284         return;
 285     }
 286
 287     QByteArray sd = state;
 288     QDataStream stream(&sd, QIODevice::ReadOnly);
 289
 290     // Read the version number of the tab state and check if the version is supported.
 291     quint32 version = 0;
 292     stream >> version;
 293     if (version != 2) {
 294         // The version of the tab state isn't supported, we can't restore it.
 295         return;
 296     }
 297
 298     bool isSplitViewEnabled = false;
 299     stream >> isSplitViewEnabled;
 300     setSplitViewEnabled(isSplitViewEnabled, WithoutAnimation);
 301
 302     QUrl primaryUrl;
 303     stream >> primaryUrl;
 304     m_primaryViewContainer->setUrl(primaryUrl);
 305     bool primaryUrlEditable;
 306     stream >> primaryUrlEditable;
 307     m_primaryViewContainer->urlNavigatorInternalWithHistory()->setUrlEditable(primaryUrlEditable);
 308     m_primaryViewContainer->view()->restoreState(stream);
 309
 310     if (isSplitViewEnabled) {
 311         QUrl secondaryUrl;
 312         stream >> secondaryUrl;
 313         m_secondaryViewContainer->setUrl(secondaryUrl);
 314         bool secondaryUrlEditable;
 315         stream >> secondaryUrlEditable;
 316         m_secondaryViewContainer->urlNavigatorInternalWithHistory()->setUrlEditable(secondaryUrlEditable);
 317         m_secondaryViewContainer->view()->restoreState(stream);
 318     }
 319
 320     stream >> m_primaryViewActive;
 321     if (m_primaryViewActive) {
 322         m_primaryViewContainer->setActive(true);
 323     } else {
 324         Q_ASSERT(m_splitViewEnabled);
 325         m_secondaryViewContainer->setActive(true);
 326     }
 327
 328     QByteArray splitterState;
 329     stream >> splitterState;
 330     m_splitter->restoreState(splitterState);
 331 }
 332
 333 void DolphinTabPage::setActive(bool active)
 334 {
 335     if (active) {
 336         m_active = active;
 337     } else {
 338         // we should bypass changing active view in split mode
 339         m_active = !m_splitViewEnabled;
 340     }
 341     // we want view to fire activated when goes from false to true
 342     activeViewContainer()->setActive(active);
 343 }
 344
 345 void DolphinTabPage::slotAnimationFinished()
 346 {
 347     for (int i = 0; i < m_splitter->count(); ++i) {
 348         QWidget *viewContainer = m_splitter->widget(i);
 349         if (viewContainer != m_primaryViewContainer && viewContainer != m_secondaryViewContainer) {
 350             viewContainer->close();
 351             viewContainer->deleteLater();
 352         }
 353     }
 354     for (int i = 0; i < m_splitter->count(); ++i) {
 355         QWidget *viewContainer = m_splitter->widget(i);
 356         viewContainer->setMinimumWidth(viewContainer->minimumSizeHint().width());
 357     }
 358     m_expandingContainer = nullptr;
 359 }
 360
 361 void DolphinTabPage::slotAnimationValueChanged(const QVariant &value)
 362 {
 363     Q_CHECK_PTR(m_expandingContainer);
 364     const int indexOfExpandingContainer = m_splitter->indexOf(m_expandingContainer);
 365     int indexOfNonExpandingContainer = -1;
 366     if (m_expandingContainer == m_primaryViewContainer) {
 367         indexOfNonExpandingContainer = m_splitter->indexOf(m_secondaryViewContainer);
 368     } else {
 369         indexOfNonExpandingContainer = m_splitter->indexOf(m_primaryViewContainer);
 370     }
 371     std::vector<QWidget *> widgetsToRemove;
 372     const QList<int> oldSplitterSizes = m_splitter->sizes();
 373     QList<int> newSplitterSizes{oldSplitterSizes};
 374     int expansionWidthNeeded = value.toInt() - oldSplitterSizes.at(indexOfExpandingContainer);
 375
 376     // Reduce the size of the other widgets to make space for the expandingContainer.
 377     for (int i = m_splitter->count() - 1; i >= 0; --i) {
 378         if (m_splitter->widget(i) == m_primaryViewContainer || m_splitter->widget(i) == m_secondaryViewContainer) {
 379             continue;
 380         }
 381         newSplitterSizes[i] = oldSplitterSizes.at(i) - expansionWidthNeeded;
 382         expansionWidthNeeded = 0;
 383         if (indexOfNonExpandingContainer != -1) {
 384             // Make sure every zombie container is at least slightly reduced in size
 385             // so it doesn't seem like they are here to stay.
 386             newSplitterSizes[i]--;
 387             newSplitterSizes[indexOfNonExpandingContainer]++;
 388         }
 389         if (newSplitterSizes.at(i) <= 0) {
 390             expansionWidthNeeded -= newSplitterSizes.at(i);
 391             newSplitterSizes[i] = 0;
 392             widgetsToRemove.emplace_back(m_splitter->widget(i));
 393         }
 394     }
 395     if (expansionWidthNeeded > 1 && indexOfNonExpandingContainer != -1) {
 396         Q_ASSERT(m_splitViewEnabled);
 397         newSplitterSizes[indexOfNonExpandingContainer] -= expansionWidthNeeded;
 398     }
 399     newSplitterSizes[indexOfExpandingContainer] = value.toInt();
 400     m_splitter->setSizes(newSplitterSizes);
 401     while (!widgetsToRemove.empty()) {
 402         widgetsToRemove.back()->close();
 403         widgetsToRemove.back()->deleteLater();
 404         widgetsToRemove.pop_back();
 405     }
 406 }
 407
 408 void DolphinTabPage::slotViewActivated()
 409 {
 410     const DolphinView *oldActiveView = activeViewContainer()->view();
 411
 412     // Set the view, which was active before, to inactive
 413     // and update the active view type, if tab is active
 414     if (m_active) {
 415         if (m_splitViewEnabled) {
 416             activeViewContainer()->setActive(false);
 417             m_primaryViewActive = !m_primaryViewActive;
 418         } else {
 419             m_primaryViewActive = true;
 420             if (m_secondaryViewContainer) {
 421                 m_secondaryViewContainer->setActive(false);
 422             }
 423         }
 424     }
 425
 426     const DolphinView *newActiveView = activeViewContainer()->view();
 427
 428     if (newActiveView == oldActiveView) {
 429         return;
 430     }
 431
 432     disconnect(oldActiveView, &DolphinView::urlChanged, this, &DolphinTabPage::activeViewUrlChanged);
 433     connect(newActiveView, &DolphinView::urlChanged, this, &DolphinTabPage::activeViewUrlChanged);
 434     Q_EMIT activeViewChanged(activeViewContainer());
 435     Q_EMIT activeViewUrlChanged(activeViewContainer()->url());
 436 }
 437
 438 void DolphinTabPage::slotViewUrlRedirection(const QUrl &oldUrl, const QUrl &newUrl)
 439 {
 440     // Make sure the url of the view is updated. BUG:496414
 441     if (splitViewEnabled()) {
 442         if (primaryViewContainer()->view()->url() == oldUrl) {
 443             primaryViewContainer()->view()->setUrl(newUrl);
 444         }
 445         if (secondaryViewContainer()->view()->url() == oldUrl) {
 446             secondaryViewContainer()->view()->setUrl(newUrl);
 447         }
 448     } else {
 449         activeViewContainer()->view()->setUrl(newUrl);
 450     }
 451     Q_EMIT activeViewUrlChanged(newUrl);
 452 }
 453
 454 void DolphinTabPage::switchActiveView()
 455 {
 456     if (!m_splitViewEnabled) {
 457         return;
 458     }
 459     if (m_primaryViewActive) {
 460         m_secondaryViewContainer->setActive(true);
 461     } else {
 462         m_primaryViewContainer->setActive(true);
 463     }
 464 }
 465
 466 DolphinViewContainer *DolphinTabPage::createViewContainer(const QUrl &url) const
 467 {
 468     DolphinViewContainer *container = new DolphinViewContainer(url, m_splitter);
 469     container->setActive(false);
 470
 471     const DolphinView *view = container->view();
 472     connect(view, &DolphinView::activated, this, &DolphinTabPage::slotViewActivated);
 473
 474     connect(view, &DolphinView::toggleActiveViewRequested, this, &DolphinTabPage::switchActiveView);
 475
 476     return container;
 477 }
 478
 479 void DolphinTabPage::startExpandViewAnimation(DolphinViewContainer *expandingContainer)
 480 {
 481     Q_CHECK_PTR(expandingContainer);
 482     Q_ASSERT(expandingContainer == m_primaryViewContainer || expandingContainer == m_secondaryViewContainer);
 483     m_expandingContainer = expandingContainer;
 484
 485     m_expandViewAnimation = new QVariantAnimation(m_splitter);
 486     m_expandViewAnimation->setDuration(2 * style()->styleHint(QStyle::SH_Widget_Animation_Duration, nullptr, this) * GlobalConfig::animationDurationFactor());
 487     for (int i = 0; i < m_splitter->count(); ++i) {
 488         m_splitter->widget(i)->setMinimumWidth(1);
 489     }
 490     connect(m_expandViewAnimation, &QAbstractAnimation::finished, this, &DolphinTabPage::slotAnimationFinished);
 491     connect(m_expandViewAnimation, &QVariantAnimation::valueChanged, this, &DolphinTabPage::slotAnimationValueChanged);
 492
 493     m_expandViewAnimation->setStartValue(expandingContainer->width());
 494     if (m_splitViewEnabled) { // A new viewContainer is being opened.
 495         m_expandViewAnimation->setEndValue(m_splitter->width() / 2);
 496         m_expandViewAnimation->setEasingCurve(QEasingCurve::OutCubic);
 497     } else { // A viewContainer is being closed.
 498         m_expandViewAnimation->setEndValue(m_splitter->width());
 499         m_expandViewAnimation->setEasingCurve(QEasingCurve::InCubic);
 500     }
 501     m_expandViewAnimation->start(QAbstractAnimation::DeleteWhenStopped);
 502 }
 503
 504 DolphinTabPageSplitterHandle::DolphinTabPageSplitterHandle(Qt::Orientation orientation, QSplitter *parent)
 505     : QSplitterHandle(orientation, parent)
 506     , m_mouseReleaseWasReceived(false)
 507 {
 508 }
 509
 510 bool DolphinTabPageSplitterHandle::event(QEvent *event)
 511 {
 512     switch (event->type()) {
 513     case QEvent::MouseButtonPress:
 514         m_mouseReleaseWasReceived = false;
 515         break;
 516     case QEvent::MouseButtonRelease:
 517         if (m_mouseReleaseWasReceived) {
 518             resetSplitterSizes();
 519         }
 520         m_mouseReleaseWasReceived = !m_mouseReleaseWasReceived;
 521         break;
 522     case QEvent::MouseButtonDblClick:
 523         m_mouseReleaseWasReceived = false;
 524         resetSplitterSizes();
 525         break;
 526     default:
 527         break;
 528     }
 529
 530     return QSplitterHandle::event(event);
 531 }
 532
 533 void DolphinTabPageSplitterHandle::resetSplitterSizes()
 534 {
 535     QList<int> splitterSizes = splitter()->sizes();
 536     std::fill(splitterSizes.begin(), splitterSizes.end(), 0);
 537     splitter()->setSizes(splitterSizes);
 538 }
 539
 540 DolphinTabPageSplitter::DolphinTabPageSplitter(Qt::Orientation orientation, QWidget *parent)
 541     : QSplitter(orientation, parent)
 542 {
 543 }
 544
 545 QSplitterHandle *DolphinTabPageSplitter::createHandle()
 546 {
 547     return new DolphinTabPageSplitterHandle(orientation(), this);
 548 }
 549
 550 #include "moc_dolphintabpage.cpp"