irrlicht/source/Irrlicht/CGUIComboBox.h

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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#pragma once
#include "IGUIComboBox.h"
#include "IGUIStaticText.h"
#include "irrString.h"
#include "irrArray.h"
namespace irr
{
namespace gui
{
class IGUIButton;
class IGUIListBox;
//! Single line edit box for editing simple text.
class CGUIComboBox : public IGUIComboBox
{
public:
//! constructor
CGUIComboBox(IGUIEnvironment *environment, IGUIElement *parent,
s32 id, core::rect<s32> rectangle);
//! Returns amount of items in box
u32 getItemCount() const override;
//! returns string of an item. the idx may be a value from 0 to itemCount-1
const wchar_t *getItem(u32 idx) const override;
//! Returns item data of an item. the idx may be a value from 0 to itemCount-1
u32 getItemData(u32 idx) const override;
//! Returns index based on item data
s32 getIndexForItemData(u32 data) const override;
//! adds an item and returns the index of it
u32 addItem(const wchar_t *text, u32 data) override;
//! Removes an item from the combo box.
void removeItem(u32 id) override;
//! deletes all items in the combo box
void clear() override;
//! returns the text of the currently selected item
const wchar_t *getText() const override;
//! returns id of selected item. returns -1 if no item is selected.
s32 getSelected() const override;
//! sets the selected item. Set this to -1 if no item should be selected
void setSelected(s32 idx) override;
//! Sets the selected item and emits a change event.
/** Set this to -1 if no item should be selected */
void setAndSendSelected(s32 idx) override;
//! sets the text alignment of the text part
void setTextAlignment(EGUI_ALIGNMENT horizontal, EGUI_ALIGNMENT vertical) override;
//! Set the maximal number of rows for the selection listbox
void setMaxSelectionRows(u32 max) override;
//! Get the maximal number of rows for the selection listbox
u32 getMaxSelectionRows() const override;
//! called if an event happened.
bool OnEvent(const SEvent &event) override;
//! draws the element and its children
void draw() override;
private:
void openCloseMenu();
void sendSelectionChangedEvent();
void updateListButtonWidth(s32 width);
IGUIButton *ListButton;
IGUIStaticText *SelectedText;
IGUIListBox *ListBox;
IGUIElement *LastFocus;
struct SComboData
{
SComboData(const wchar_t *text, u32 data) :
Name(text), Data(data) {}
core::stringw Name;
u32 Data;
};
core::array<SComboData> Items;
s32 Selected;
EGUI_ALIGNMENT HAlign, VAlign;
u32 MaxSelectionRows;
bool HasFocus;
IGUIFont *ActiveFont;
};
} // end namespace gui
} // end namespace irr