contextmenu.c

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//--------------------------------------------------------------------------
class ContextMenu extends ScriptedWidgetEventHandler
{
    protected static ref ContextMenu m_ContextMenuInstance;
    
    Widget m_context_menu_root_widget;
    private Widget m_context_menu_panel_widget;
    private ref array<ref CallQueueContext> m_commands;
    private int m_max_item_width;
    private int m_count;
    private bool m_builtIn = false;
    const int ITEMS_COUNT = 27;
    
    //--------------------------------------------------------------------------
    void ContextMenu()
    {
        m_commands = new array<ref CallQueueContext>;
        m_count = 0;
    }
    //--------------------------------------------------------------------------
    void ~ContextMenu()
    {
        Clear();
    
        delete m_context_menu_root_widget;
    }
    //--------------------------------------------------------------------------
    void Init(Widget layoutRoot, bool builtIn = false)
    {
        m_builtIn = builtIn;
        if (!m_context_menu_root_widget)
        {
            m_context_menu_root_widget = GetGame().GetWorkspace().CreateWidgets("gui/layouts/day_z_inventory_context_menu.layout", layoutRoot);
            m_context_menu_panel_widget = m_context_menu_root_widget.FindAnyWidget("PanelWidget");
            m_context_menu_root_widget.Show(false);
            m_context_menu_root_widget.SetHandler(this);
        }
    }
    
    //--------------------------------------------------------------------------
    void Show(int x, int y)
    {
        if ( m_count == 0) return;
        int screen_w, screen_h;
        float w, h;
        float sx, sy;
        int offset_x;// = -20;
        int offset_y;// = -10;
    
        GetScreenSize(screen_w, screen_h);
    
        // align buttons
        float button_height_percent = 0.02;  // button height is 4% of screen height
        float button_height = screen_h * button_height_percent;
        
        for ( int i = 0; i < m_count; i++)
        {
            ButtonWidget menu_button = ButtonWidget.Cast( m_context_menu_root_widget.FindAnyWidget( String( "Button" + (i+1).ToString() ) ) );
            if(menu_button)
            {
                    menu_button.SetSize(0.90, button_height);
                    menu_button.Show(true);
            }
        }
    
    
        AutoHeightSpacer spacer;
        m_context_menu_panel_widget.GetScript(spacer);
        if ( spacer )
        {
            spacer.Update();    
        }
    
        m_context_menu_root_widget.GetSize(w, h);
        m_context_menu_panel_widget.GetSize(sx, sy);
        m_context_menu_root_widget.SetSize(w, sy);
    
        // set position
        m_context_menu_root_widget.GetScreenSize(w,h);
        screen_w -= 10;
        screen_h -= 10;
    
        int right_edge = x + w - offset_x;
        if (right_edge > screen_w) 
        {
            x = screen_w - w - offset_x;
        }
        else
        {
            x = x + offset_x;
        }
    
        int bottom_edge = y + h - offset_y;
        if (bottom_edge > screen_h)
        {
            y = y - h - offset_y;
        }
        else
        {
            y = y + offset_y;
        }
    
        m_context_menu_root_widget.SetPos(x, y);
        m_context_menu_root_widget.Show(true);
    }   
    //--------------------------------------------------------------------------
    void SetSize(float x, float y)
    {
        m_context_menu_root_widget.SetSize(x, y);
    }
 
    //--------------------------------------------------------------------------
    void ShowBackdrop(bool show)
    {
        if (show == true)
        {
            m_context_menu_root_widget.FindAnyWidget("BackdropImageWidget").Show(true);
        }
        else
        {
            m_context_menu_root_widget.FindAnyWidget("BackdropImageWidget").Show(false);
        }
    }
    
    //--------------------------------------------------------------------------
    void Hide()
    {
        m_context_menu_root_widget.Show(false);
    
        Clear();
    }
    
    //--------------------------------------------------------------------------
    bool IsVisible()
    {
        return m_context_menu_root_widget.IsVisible();
    }
    
    //--------------------------------------------------------------------------
    override bool OnMouseLeave(Widget w, Widget enterW, int x, int y)
    {
        super.OnMouseLeave(w, enterW, x, y);
        
        if ( !m_builtIn && enterW && m_context_menu_panel_widget && enterW != m_context_menu_panel_widget && enterW.GetParent() != m_context_menu_panel_widget )
        {
            Hide();
            return true;
        }
        return false;
    }
    
    //--------------------------------------------------------------------------
    override bool OnMouseButtonDown(Widget w, int x, int y, int button)
    {
        super.OnMouseButtonDown(w, x, y, button);
        
        if (button == MouseState.LEFT && w.GetUserID() > -1 && w.GetUserID() < m_commands.Count())
        {
            CallQueueContext ctx = m_commands.Get(w.GetUserID());
 
            int actionId = Param3<EntityAI, int, int>.Cast(ctx.m_params).param2;
            if (actionId == EActions.DELETE)
                Hide();
            
            UIScriptedMenu menu = GetGame().GetUIManager().GetMenu();
            if (menu)
                GetGame().GetCallQueue(CALL_CATEGORY_GUI).Call(menu.Refresh);
            
            ctx.Call();
 
            return true;
        }
 
        return false;
    }
    
    //--------------------------------------------------------------------------
    void Add(string label, Class obj, string fn_name, Param params)
    {
         AddEx(label, FadeColors.LIGHT_GREY, obj, fn_name, params);
    }
    
    void AddEx(string label, int labelColor, Class obj, string funcName, Param params)
    {
        int count = Count();
        ButtonWidget menuButton = ButtonWidget.Cast(m_context_menu_root_widget.FindAnyWidget(string.Format("Button%1", count + 1)));
        if (menuButton)
        {
            label.ToUpper();
            menuButton.SetText(label);
            menuButton.SetTextColor(labelColor);
            menuButton.Show(true);
            if (!funcName)
                menuButton.SetFlags(menuButton.GetFlags() | WidgetFlags.IGNOREPOINTER); 
 
            int itemWidth = label.Length();
            if (m_max_item_width < itemWidth)
                m_max_item_width = itemWidth;
        }
        
        m_count++;
        m_commands.Insert(new CallQueueContext(obj, funcName, params));
    }
    
    //--------------------------------------------------------------------------
    void Remove(int index)
    {
        if (index < m_commands.Count())
        {
            m_commands.RemoveOrdered(index);
            ButtonWidget menu_button = ButtonWidget.Cast( m_context_menu_root_widget.FindAnyWidget( String( "Button" + ( index + 1 ).ToString() ) ) );
            menu_button.Show( false );
            menu_button.SetText( "" );
            m_count--;
        }
    }
    
    //--------------------------------------------------------------------------
    int Count()
    {
        return m_commands.Count();
    }
    
    //--------------------------------------------------------------------------
    void Clear()
    {   
        int i;
        
        m_commands.Clear();
        
        if (!m_context_menu_panel_widget)
            return;
        Widget child = m_context_menu_panel_widget.GetChildren();
        while(child)
        {
            ButtonWidget button = ButtonWidget.Cast(child);
            if(button)
            {
                button.Show(false);
            }
            child = child.GetSibling();
            
            
        }
        m_count = 0;
        m_max_item_width = 0;
    }
 
    void BuildContextMenu(notnull EntityAI entity, notnull Widget rootWidget, Class target)
    {
        Clear();
 
        TSelectableActionInfoArrayEx customActions = new TSelectableActionInfoArrayEx();
        entity.GetDebugActions(customActions);
    
        int actionsCount = customActions.Count();
        for (int i = 0; i < customActions.Count(); i++)
        {
            TSelectableActionInfoWithColor actionInfo = TSelectableActionInfoWithColor.Cast(customActions.Get(i));
            if (actionInfo)
            {
                int actionId        = actionInfo.param2;
                int textColor       = actionInfo.param4;
                string actionText   = actionInfo.param3;
    
                if (actionId == EActions.SEPARATOR)
                    AddEx(actionText, textColor, null, "", null);
                else
                    AddEx(actionText, textColor, target, "OnSelectAction", new Param3<EntityAI, int, int>(entity, actionId, textColor));
            }
        }
    }
    
    //--------------------------------------------------------------------------
    static void DisplayContextMenu(int x, int y, notnull EntityAI entity, notnull Widget rootWidget, Class target)
    {
        m_ContextMenuInstance = new ContextMenu();
        if (m_ContextMenuInstance)
        {
            m_ContextMenuInstance.Init(rootWidget);
            m_ContextMenuInstance.BuildContextMenu(entity, rootWidget, target);
 
            m_ContextMenuInstance.SetSize(1,1);
            m_ContextMenuInstance.Show(x, y);
        }
    }
    
};