ZXWidgetComboBox.h

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/* **************************************************************************/
#ifndef ZXWIDGET_COMBOBOX
#define ZXWIDGET_COMBOBOX
 
#include <memory>
#include "zxecosystem/gui/widgets/ZXWidgetsSimple.h"
#include "zxecosystem/gui/widgets/ZXWidgetList.h"
#include "zxecosystem/gui/ZXWindows.h"
 
 
namespace zxeco
{
 
namespace gui
{
 
 
/*******************************************************************************
*
*   Class: ComboBoxWidget
*
*******************************************************************************/
 
 
class ComboBoxWidget: public ContainerWidget
{
 public:
 
    ComboBoxWidget(ID id, const std::string & name,
                   const LabelList & l, const std::string & inittext = "",
                   CharDist maxwidths = 0, bool editable = false, 
                   bool showing = true, bool deploybutton = true,
                   const std::string & tooltiptext = "",
                   HorAlign hal = HorAlign::LEFT, 
                   VertAlign val = VertAlign::TOP);
 
    const std::string & text(void) const noexcept { return(pwedit_->text()); }
 
    const LabelList & list(void) const { return(*pllist_); }
 
    size_t lastSelected(void) const noexcept { return(lastselected_); }
 
    void clearLastSelected(void) { lastselected_ = pllist_->size(); }
 
    void setSelected(const std::string & txt);
 
    void setSelected(size_t ind);
 
    bool processedByEditing(const CallbackParms & cbps) const noexcept
        { return((cbps.whoprocessed != nullptr) &&
                 (cbps.whoprocessed->isDescendantOf(*pwedit_))); }
 
    bool itemLeftClicked(const CallbackParms & cbps) const noexcept
        { return(cbps.hasBeenLeftClicked() && (!processedByEditing(cbps))); }
 
    bool itemLeftClickedOrEnter(const CallbackParms & cbps) const noexcept
        { return(itemLeftClicked(cbps) || cbps.hasPressedEnter()); }
 
 
    const char * className(void) const noexcept { return("ComboBoxWidget"); }
 
 
 private:
 
    enum Subwidgs {
                    LINE_EDIT = 0,
                    DEPLOY_BUTTON,
                    NUMSUBWIDGETS
                  };
 
    enum WinPlacement {
                        PARENT_VERTICAL,
                        PARENT_HORIZONTAL
                      };
 
    static const uint8_t kUDGs[1*8];
    static const ID kIDsSubs[NUMSUBWIDGETS];
    static const ID kIDListInWin;
 
    const bool editable_;
    const bool showing_;
    const std::unique_ptr<LabelList> pllist_;
    const size_t maxlenlist_;
    
    LineInputWidget * pwedit_;
    ButtonWidget * pwdeploy_;
    size_t lastselected_;
    std::string prevtext_;
 
    void drawRaw(void);
    int processEvent(const EventData & evdata, Widget * who) override;
    CharRect calcPosList(const LabelList & llist, 
                         const CharRect & parentarea,
                         WinPlacement placement,
                         CharArea & dimslist) const;
    Window::MngResult openAndManageList(const LabelList & llist, 
                                        const CharRect & parea,
                                        WinPlacement placement,
                                        LabelList::Iterator & it,
                                        std::unique_ptr<Window> & pwinlist);
    Window::MngResult askUserSelection(void);
};
 
 
 
} // end namespace gui
} // end namespace zxeco
 
#endif
 // ZXWidgetComboBox