init

Telegram/lib_ui/ui/widgets/dropdown_menu.h

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "styles/style_widgets.h"
+#include "ui/widgets/inner_dropdown.h"
+#include "ui/widgets/menu/menu.h"
+
+namespace Ui {
+
+class DropdownMenu : public InnerDropdown {
+public:
+	DropdownMenu(QWidget *parent, const style::DropdownMenu &st = st::defaultDropdownMenu);
+
+	QAccessible::Role accessibilityRole() override {
+		return QAccessible::Role::PopupMenu;
+	}
+
+	not_null<QAction*> addAction(base::unique_qptr<Menu::ItemBase> widget);
+	not_null<QAction*> addAction(const QString &text, Fn<void()> callback, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
+	not_null<QAction*> addSeparator(
+		const style::MenuSeparator *st = nullptr);
+	void clearActions();
+
+	void setHiddenCallback(Fn<void()> callback) {
+		_hiddenCallback = std::move(callback);
+	}
+
+	[[nodiscard]] const std::vector<not_null<QAction*>> &actions() const;
+	[[nodiscard]] bool empty() const;
+
+	[[nodiscard]] not_null<Menu::Menu*> menu() const {
+		return _menu;
+	}
+
+	~DropdownMenu();
+
+protected:
+	void focusOutEvent(QFocusEvent *e) override;
+	void hideEvent(QHideEvent *e) override;
+	void keyPressEvent(QKeyEvent *e) override;
+	void mouseMoveEvent(QMouseEvent *e) override;
+	void mousePressEvent(QMouseEvent *e) override;
+
+private:
+	// Not ready with submenus yet.
+	DropdownMenu(QWidget *parent, QMenu *menu, const style::DropdownMenu &st = st::defaultDropdownMenu);
+	void deleteOnHide(bool del);
+	void popup(const QPoint &p);
+	void hideMenu(bool fast = false);
+
+	void childHiding(DropdownMenu *child);
+
+	void init();
+	void hideFinish();
+
+	using TriggeredSource = Menu::TriggeredSource;
+	void handleActivated(const Menu::CallbackData &data);
+	void handleTriggered(const Menu::CallbackData &data);
+	void forwardKeyPress(not_null<QKeyEvent*> e);
+	bool handleKeyPress(int key);
+	void forwardMouseMove(QPoint globalPosition) {
+		_menu->handleMouseMove(globalPosition);
+	}
+	void handleMouseMove(QPoint globalPosition);
+	void forwardMousePress(QPoint globalPosition) {
+		_menu->handleMousePress(globalPosition);
+	}
+	void handleMousePress(QPoint globalPosition);
+	void forwardMouseRelease(QPoint globalPosition) {
+		_menu->handleMouseRelease(globalPosition);
+	}
+	void handleMouseRelease(QPoint globalPosition);
+
+	using SubmenuPointer = QPointer<DropdownMenu>;
+	bool popupSubmenuFromAction(const Menu::CallbackData &data);
+	void popupSubmenu(SubmenuPointer submenu, int actionTop, TriggeredSource source);
+	void showMenu(const QPoint &p, DropdownMenu *parent, TriggeredSource source);
+
+	const style::DropdownMenu &_st;
+	Fn<void()> _hiddenCallback;
+
+	QPointer<Menu::Menu> _menu;
+
+	// Not ready with submenus yet.
+	//using Submenus = QMap<QAction*, SubmenuPointer>;
+	//Submenus _submenus;
+
+	DropdownMenu *_parent = nullptr;
+
+	SubmenuPointer _activeSubmenu;
+
+	bool _deleteOnHide = false;
+	bool _triggering = false;
+	bool _deleteLater = false;
+
+};
+
+} // namespace Ui