GUIVerticalScrollbarInternalController.h

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#pragma once
 
#include <tdme/tdme.h>
#include <tdme/gui/events/fwd-tdme.h>
#include <tdme/gui/nodes/fwd-tdme.h>
#include <tdme/gui/nodes/GUINodeController.h>
#include <tdme/utilities/MutableString.h>
 
using tdme::gui::events::GUIKeyboardEvent;
using tdme::gui::events::GUIMouseEvent;
using tdme::gui::nodes::GUILayoutNode;
using tdme::gui::nodes::GUINode;
using tdme::gui::nodes::GUINodeController;
using tdme::gui::nodes::GUIVerticalScrollbarInternalController_State;
using tdme::utilities::MutableString;
 
/**
 * GUI vertical scroll bar internal controller
 * @author Andreas Drewke
 */
class tdme::gui::nodes::GUIVerticalScrollbarInternalController
    : public GUINodeController
{
    friend class GUIVerticalScrollbarInternalNode;
public:
    enum State {STATE_NONE, STATE_MOUSEOVER, STATE_DRAGGING};
 
private:
    GUILayoutNode* contentNode { nullptr };
    float contentHeight;
    State state;
    int mouseYOffset;
    MutableString value;
 
    // forbid class copy
    FORBID_CLASS_COPY(GUIVerticalScrollbarInternalController)
 
    /**
     * Private constructor
     * @param node node
     */
    GUIVerticalScrollbarInternalController(GUINode* node);
 
public:
    // overridden methods
    bool isDisabled() override;
    void setDisabled(bool disabled) override;
    void initialize() override;
    void dispose() override;
    void postLayout() override;
    void handleMouseEvent(GUINode* node, GUIMouseEvent* event) override;
    void handleKeyboardEvent(GUIKeyboardEvent* event) override;
    void tick() override;
    void onFocusGained() override;
    void onFocusLost() override;
    bool hasValue() override;
    const MutableString& getValue() override;
    void setValue(const MutableString& value) override;
    void onSubTreeChange() override;
 
    /**
     * @return state
     */
    virtual State getState();
 
private:
 
    /**
     * @return bar height
     */
    virtual float getBarHeight();
 
    /**
     * @return bar top
     */
    virtual float getBarTop();
 
    /**
     * Set dragged y
     * @param draggedY dragged y
     */
    virtual void setDraggedY(float draggedY);
 
};