juce_BurgerMenuComponent.h

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/*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   By using JUCE, you agree to the terms of both the JUCE 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-privacy-policy
 
   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).
 
   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.
 
  ==============================================================================
*/
 
namespace juce
{
 
//==============================================================================
class BurgerMenuComponent     : public Component,
                                private ListBoxModel,
                                private MenuBarModel::Listener
{
public:
    //==============================================================================
    BurgerMenuComponent (MenuBarModel* model = nullptr);

    ~BurgerMenuComponent() override;
 
    //==============================================================================
    void setModel (MenuBarModel* newModel);

    MenuBarModel* getModel() const noexcept;

    void lookAndFeelChanged() override;
 
private:
    //==============================================================================
    struct Row
    {
        bool isMenuHeader;
        int topLevelMenuIndex;
        PopupMenu::Item item;
    };
 
    std::unique_ptr<AccessibilityHandler> createAccessibilityHandler() override;
    void refresh();
    void paint (Graphics&) override;
    int getNumRows() override;
    void paintListBoxItem (int, Graphics&, int, int, bool) override;
    void listBoxItemClicked (int, const MouseEvent&) override;
    Component* refreshComponentForRow (int, bool, Component*) override;
    void resized() override;
    void menuBarItemsChanged (MenuBarModel*) override;
    void menuCommandInvoked (MenuBarModel*, const ApplicationCommandTarget::InvocationInfo&) override;
    void mouseUp (const MouseEvent&) override;
    void handleCommandMessage (int) override;
    void addMenuBarItemsForMenu (PopupMenu&, int);
    static bool hasSubMenu (const PopupMenu::Item&);
 
    //==============================================================================
    MenuBarModel* model = nullptr;
    ListBox listBox    {"BurgerMenuListBox", this};
    Array<Row> rows;
 
    int lastRowClicked = -1, inputSourceIndexOfLastClick = -1, topLevelIndexClicked = -1;
 
    //==============================================================================
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (BurgerMenuComponent)
};
 
} // namespace juce