Better separation of classes

Make obvious when actions trigger selection mode.

1 files changed, 71 insertions, 0 deletions

diff --git a/src/selectionmode/topbar.h b/src/selectionmode/topbar.h
new file mode 100644
index 000000000..e0cd34935
--- /dev/null
+++ b/src/selectionmode/topbar.h
@@ -0,0 +1,71 @@
+/*
+    This file is part of the KDE project
+    SPDX-FileCopyrightText: 2022 Felix Ernst <[email protected]>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
+
+#ifndef SELECTIONMODETOPBAR_H
+#define SELECTIONMODETOPBAR_H
+
+#include "global.h"
+
+#include <QPointer>
+#include <QPropertyAnimation>
+#include <QStyle>
+#include <QWidget>
+
+class QHideEvent;
+class QLabel;
+class QPushButton;
+class QResizeEvent;
+class QShowEvent;
+
+namespace SelectionMode
+{
+
+/**
+ * @brief A bar appearing at the top of the view when in selection mode to make users aware of the selection mode state of the application.
+ */
+class TopBar : public QWidget
+{
+    Q_OBJECT
+
+public:
+    TopBar(QWidget *parent);
+
+    /**
+     * Plays a show or hide animation while changing visibility.
+     * Therefore, if this method is used to hide this widget, the actual hiding will be postponed until the animation finished.
+     * @see QWidget::setVisible()
+     */
+    void setVisible(bool visible, Animated animated);
+    using QWidget::setVisible; // Makes sure that the setVisible() declaration above doesn't hide the one from QWidget.
+
+Q_SIGNALS:
+    void leaveSelectionModeRequested();
+
+protected:
+    void resizeEvent(QResizeEvent */* resizeEvent */) override;
+
+private:
+    /** Decides whether the m_fullLabelString or m_shortLabelString should be used based on available width. */
+    void updateLabelString();
+
+private:
+    QLabel *m_label;
+    QPushButton *m_closeButton;
+
+    /** @see updateLabelString() */
+    QString m_fullLabelString;
+    /** @see updateLabelString() */
+    QString m_shortLabelString;
+
+    int m_preferredHeight;
+
+    QPointer<QPropertyAnimation> m_heightAnimation;
+};
+
+}
+
+#endif // SELECTIONMODETOPBAR_H