src/selectionmode/bottombar.cpp

   1 /*
   2     This file is part of the KDE project
   3     SPDX-FileCopyrightText: 2022 Felix Ernst <felixernst@kde.org>
   4
   5     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
   6 */
   7
   8 #include "bottombar.h"
   9
  10 #include "backgroundcolorhelper.h"
  11 #include "bottombarcontentscontainer.h"
  12
  13 #include <QGridLayout>
  14 #include <QResizeEvent>
  15 #include <QStyle>
  16 #include <QTimer>
  17
  18 using namespace SelectionMode;
  19
  20 BottomBar::BottomBar(KActionCollection *actionCollection, QWidget *parent)
  21     : AnimatedHeightWidget{parent}
  22 {
  23     m_contentsContainer = new BottomBarContentsContainer(actionCollection, nullptr);
  24     prepareContentsContainer(m_contentsContainer);
  25     m_contentsContainer->installEventFilter(this); // Adjusts the height of this bar to the height of the contentsContainer
  26     connect(m_contentsContainer, &BottomBarContentsContainer::error, this, &BottomBar::error);
  27     connect(m_contentsContainer, &BottomBarContentsContainer::barVisibilityChangeRequested, this, [this](bool visible) {
  28         if (!m_allowedToBeVisible && visible) {
  29             return;
  30         }
  31         setVisibleInternal(visible, WithAnimation);
  32     });
  33     connect(m_contentsContainer, &BottomBarContentsContainer::selectionModeLeavingRequested, this, &BottomBar::selectionModeLeavingRequested);
  34
  35     setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
  36     BackgroundColorHelper::instance()->controlBackgroundColor(this);
  37 }
  38
  39 void BottomBar::setVisible(bool visible, Animated animated)
  40 {
  41     m_allowedToBeVisible = visible;
  42     setVisibleInternal(visible, animated);
  43 }
  44
  45 void BottomBar::setVisibleInternal(bool visible, Animated animated)
  46 {
  47     if (!visible && contents() == PasteContents) {
  48         return; // The bar with PasteContents should not be hidden or users might not know how to paste what they just copied.
  49                 // Set contents to anything else to circumvent this prevention mechanism.
  50     }
  51     if (visible && !m_contentsContainer->hasSomethingToShow()) {
  52         return; // There is nothing on the bar that we want to show. We keep it invisible and only show it when the selection or the contents change.
  53     }
  54
  55     AnimatedHeightWidget::setVisible(visible, animated);
  56 }
  57
  58 void BottomBar::slotSelectionChanged(const KFileItemList &selection, const QUrl &baseUrl)
  59 {
  60     m_contentsContainer->slotSelectionChanged(selection, baseUrl);
  61 }
  62
  63 void BottomBar::slotSplitTabDisabled()
  64 {
  65     switch (contents()) {
  66     case CopyToOtherViewContents:
  67     case MoveToOtherViewContents:
  68         Q_EMIT selectionModeLeavingRequested();
  69     default:
  70         return;
  71     }
  72 }
  73
  74 void BottomBar::resetContents(BottomBar::Contents contents)
  75 {
  76     m_contentsContainer->resetContents(contents);
  77
  78     if (m_allowedToBeVisible) {
  79         setVisibleInternal(true, WithAnimation);
  80     }
  81 }
  82
  83 BottomBar::Contents BottomBar::contents() const
  84 {
  85     return m_contentsContainer->contents();
  86 }
  87
  88 bool BottomBar::eventFilter(QObject *watched, QEvent *event)
  89 {
  90     Q_ASSERT(qobject_cast<QWidget *>(watched)); // This evenfFilter is only implemented for QWidgets.
  91
  92     switch (event->type()) {
  93     case QEvent::ChildAdded:
  94     case QEvent::ChildRemoved:
  95         QTimer::singleShot(0, this, [this]() {
  96             // The necessary height might have changed because of the added/removed child so we change the height manually.
  97             if (isVisibleTo(parentWidget()) && isEnabled() && !isAnimationRunning()) {
  98                 setMaximumHeight(sizeHint().height());
  99             }
 100         });
 101         // Fall through.
 102     default:
 103         return false;
 104     }
 105 }
 106
 107 void BottomBar::resizeEvent(QResizeEvent *resizeEvent)
 108 {
 109     if (resizeEvent->oldSize().width() == resizeEvent->size().width()) {
 110         // The width() didn't change so our custom override isn't needed.
 111         return AnimatedHeightWidget::resizeEvent(resizeEvent);
 112     }
 113
 114     m_contentsContainer->adaptToNewBarWidth(width());
 115
 116     return AnimatedHeightWidget::resizeEvent(resizeEvent);
 117 }
 118
 119 int BottomBar::preferredHeight() const
 120 {
 121     return m_contentsContainer->sizeHint().height();
 122 }
 123
 124 #include "moc_bottombar.cpp"