src/dolphintabpage.cpp

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