src/dolphintabpage.h

   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 #ifndef DOLPHIN_TAB_PAGE_H
   9 #define DOLPHIN_TAB_PAGE_H
  10
  11 #include "global.h"
  12
  13 #include <QPointer>
  14 #include <QSplitter>
  15 #include <QUrl>
  16 #include <QWidget>
  17
  18 class DolphinNavigatorsWidgetAction;
  19 class DolphinViewContainer;
  20 class QVariantAnimation;
  21 class KFileItemList;
  22 class DolphinTabPageSplitter;
  23
  24 class DolphinTabPage : public QWidget
  25 {
  26     Q_OBJECT
  27
  28 public:
  29     explicit DolphinTabPage(const QUrl &primaryUrl, const QUrl &secondaryUrl = QUrl(), QWidget *parent = nullptr);
  30
  31     /**
  32      * @return True if primary view is the active view in this tab.
  33      */
  34     bool primaryViewActive() const;
  35
  36     /**
  37      * @return True if split view is enabled.
  38      */
  39     bool splitViewEnabled() const;
  40
  41     /**
  42      * Enables or disables the split view mode.
  43      *
  44      * @param enabled      If true, creates a secondary viewContainer in this tab.
  45      *                     Otherwise deletes it.
  46      * @param animated     Decides whether the effects of this method call should
  47      *                     happen instantly or be transitioned to smoothly.
  48      * @param secondaryUrl If \p enabled is true, the new viewContainer will be opened at this
  49      *                     parameter. The default value will set the Url of the new viewContainer
  50      *                     to be the same as the existing one.
  51      */
  52     void setSplitViewEnabled(bool enabled, Animated animated, const QUrl &secondaryUrl = QUrl());
  53
  54     /**
  55      * @return The primary view container.
  56      */
  57     DolphinViewContainer *primaryViewContainer() const;
  58
  59     /**
  60      * @return The secondary view container, can be 0 if split view is disabled.
  61      */
  62     DolphinViewContainer *secondaryViewContainer() const;
  63
  64     /**
  65      * @return DolphinViewContainer of the active view
  66      */
  67     DolphinViewContainer *activeViewContainer() const;
  68
  69     /**
  70      * Returns the selected items. The list is empty if no item has been
  71      * selected.
  72      */
  73     KFileItemList selectedItems() const;
  74
  75     /**
  76      * Returns the number of selected items (this is faster than
  77      * invoking selectedItems().count()).
  78      */
  79     int selectedItemsCount() const;
  80
  81     /**
  82      * Connects a navigatorsWidget to this. It will be connected to the DolphinViewContainers
  83      * managed by this tab. For alignment purposes this will from now on notify the
  84      * navigatorsWidget when this tab or its viewContainers are resized.
  85      */
  86     void connectNavigators(DolphinNavigatorsWidgetAction *navigatorsWidget);
  87
  88     /**
  89      * Makes it so this tab and its DolphinViewContainers aren't controlled by any
  90      * UrlNavigators anymore.
  91      */
  92     void disconnectNavigators();
  93
  94     void insertNavigatorsWidget(DolphinNavigatorsWidgetAction *navigatorsWidget);
  95
  96     /**
  97      * Marks the items indicated by \p urls to get selected after the
  98      * directory DolphinView::url() has been loaded. Note that nothing
  99      * gets selected if no loading of a directory has been triggered
 100      * by DolphinView::setUrl() or DolphinView::reload().
 101      */
 102     void markUrlsAsSelected(const QList<QUrl> &urls);
 103
 104     /**
 105      * Marks the item indicated by \p url to be scrolled to and as the
 106      * current item after directory DolphinView::url() has been loaded.
 107      */
 108     void markUrlAsCurrent(const QUrl &url);
 109
 110     /**
 111      * Refreshes the views of the main window by recreating them according to
 112      * the given Dolphin settings.
 113      */
 114     void refreshViews();
 115
 116     /**
 117      * Saves all tab related properties (urls, splitter layout, ...).
 118      *
 119      * @return A byte-array which contains all properties.
 120      */
 121     QByteArray saveState() const;
 122
 123     /**
 124      * Restores all tab related properties (urls, splitter layout, ...) from
 125      * the given \a state.
 126      */
 127     void restoreState(const QByteArray &state);
 128
 129     /**
 130      * Set whether the tab page is active
 131      *
 132      */
 133     void setActive(bool active);
 134
 135 Q_SIGNALS:
 136     void activeViewChanged(DolphinViewContainer *viewContainer);
 137     void activeViewUrlChanged(const QUrl &url);
 138     void splitterMoved(int pos, int index);
 139
 140 private Q_SLOTS:
 141     /**
 142      * Deletes all zombie viewContainers that were used for the animation
 143      * and resets the minimum size of the others to a sane value.
 144      */
 145     void slotAnimationFinished();
 146
 147     /**
 148      * This method is called for every frame of the m_expandViewAnimation.
 149      */
 150     void slotAnimationValueChanged(const QVariant &value);
 151
 152     /**
 153      * Handles the view activated event.
 154      *
 155      * It sets the previous active view to inactive, updates the current
 156      * active view type and triggers the activeViewChanged event.
 157      */
 158     void slotViewActivated();
 159
 160     /**
 161      * Handles the view url redirection event.
 162      *
 163      * It emits the activeViewUrlChanged signal with the url \a newUrl.
 164      */
 165     void slotViewUrlRedirection(const QUrl &oldUrl, const QUrl &newUrl);
 166
 167     void switchActiveView();
 168
 169 private:
 170     /**
 171      * Creates a new view container and does the default initialization.
 172      */
 173     DolphinViewContainer *createViewContainer(const QUrl &url) const;
 174
 175     /**
 176      * Starts an animation that transitions between split view mode states.
 177      *
 178      * One of the viewContainers is always being expanded when toggling so
 179      * this method can animate both opening and closing of viewContainers.
 180      * @param expandingContainer The container that will increase in size
 181      *                           over the course of the animation.
 182      */
 183     void startExpandViewAnimation(DolphinViewContainer *expandingContainer);
 184
 185 private:
 186     DolphinTabPageSplitter *m_splitter;
 187
 188     QPointer<DolphinNavigatorsWidgetAction> m_navigatorsWidget;
 189     QPointer<DolphinViewContainer> m_primaryViewContainer;
 190     QPointer<DolphinViewContainer> m_secondaryViewContainer;
 191
 192     DolphinViewContainer *m_expandingContainer;
 193     QPointer<QVariantAnimation> m_expandViewAnimation;
 194
 195     bool m_primaryViewActive;
 196     bool m_splitViewEnabled;
 197     bool m_active;
 198 };
 199
 200 class DolphinTabPageSplitterHandle : public QSplitterHandle
 201 {
 202     Q_OBJECT
 203
 204 public:
 205     explicit DolphinTabPageSplitterHandle(Qt::Orientation orientation, QSplitter *parent);
 206
 207 protected:
 208     bool event(QEvent *event) override;
 209
 210 private:
 211     void resetSplitterSizes();
 212
 213     // Sometimes QSplitterHandle doesn't receive MouseButtonDblClick event.
 214     // We can detect that MouseButtonDblClick event should have been
 215     // received if we receive two MouseButtonRelease events in a row.
 216     bool m_mouseReleaseWasReceived;
 217 };
 218
 219 class DolphinTabPageSplitter : public QSplitter
 220 {
 221     Q_OBJECT
 222
 223 public:
 224     explicit DolphinTabPageSplitter(Qt::Orientation orientation, QWidget *parent);
 225
 226 protected:
 227     QSplitterHandle *createHandle() override;
 228 };
 229
 230 #endif // DOLPHIN_TAB_PAGE_H