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/*
* CList.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
#include "../widgets/Scrollable.h"
#include "../../lib/FunctionList.h"
VCMI_LIB_NAMESPACE_BEGIN
class CGHeroInstance;
class CGTownInstance;
VCMI_LIB_NAMESPACE_END
class CListBox;
class CButton;
class CAnimImage;
/// Base UI Element for hero\town lists
class CList : public Scrollable
{
protected:
class CListItem : public CIntObject, public std::enable_shared_from_this<CListItem>
{
std::shared_ptr<CIntObject> selection;
public:
CList * parent;
CListItem(CList * parent);
~CListItem();
void showPopupWindow(const Point & cursorPosition) override;
void clickPressed(const Point & cursorPosition) override;
void hover(bool on) override;
void onSelect(bool on);
/// create object with selection rectangle
virtual std::shared_ptr<CIntObject> genSelection()=0;
/// reaction on item selection (e.g. enable selection border)
/// NOTE: item may be deleted in selected state
virtual void select(bool on)=0;
/// open item (town or hero screen)
virtual void open()=0;
/// show right-click tooltip
virtual void showTooltip()=0;
/// get hover text for status bar
virtual std::string getHoverText()=0;
};
private:
const size_t size;
void select(std::shared_ptr<CListItem> which);
friend class CListItem;
std::shared_ptr<CButton> scrollUp;
std::shared_ptr<CButton> scrollDown;
void scrollBy(int distance) override;
void scrollPrev() override;
void scrollNext() override;
protected:
std::shared_ptr<CListBox> listBox;
CList(int size, Rect widgetDimensions);
void createList(Point firstItemPosition, Point itemPositionDelta, size_t listAmount);
virtual std::shared_ptr<CIntObject> createItem(size_t index) = 0;
/// should be called when list is invalidated
void update();
public:
//for selection\deselection
std::shared_ptr<CListItem> selected;
/// functions that will be called when selection changes
CFunctionList<void()> onSelect;
/// return index of currently selected element
int getSelectedIndex();
void setScrollUpButton(std::shared_ptr<CButton> button);
void setScrollDownButton(std::shared_ptr<CButton> button);
/// set of methods to switch selection
void selectIndex(int which);
void selectNext();
void selectPrev();
void showAll(Canvas & to) override;
};
/// List of heroes which is shown at the right of the adventure map screen
class CHeroList : public CList
{
/// Empty hero item used as placeholder for unused entries in list
class CEmptyHeroItem : public CIntObject
{
std::shared_ptr<CAnimImage> movement;
std::shared_ptr<CAnimImage> mana;
std::shared_ptr<CPicture> portrait;
public:
CEmptyHeroItem();
};
class CHeroItem : public CListItem
{
std::shared_ptr<CAnimImage> movement;
std::shared_ptr<CAnimImage> mana;
std::shared_ptr<CAnimImage> portrait;
public:
const CGHeroInstance * const hero;
CHeroItem(CHeroList * parent, const CGHeroInstance * hero);
std::shared_ptr<CIntObject> genSelection() override;
void update();
void select(bool on) override;
void open() override;
void showTooltip() override;
void gesture(bool on, const Point & initialPosition, const Point & finalPosition) override;
void keyPressed(EShortcut key) override;
std::string getHoverText() override;
};
std::shared_ptr<CIntObject> createItem(size_t index);
public:
CHeroList(int visibleItemsCount, Rect widgetPosition, Point firstItemOffset, Point itemOffsetDelta, size_t initialItemsCount);
/// Select specific hero and scroll if needed
void select(const CGHeroInstance * hero = nullptr);
/// Update hero. Will add or remove it from the list if needed
void updateElement(const CGHeroInstance * hero);
/// Update all heroes
void updateWidget();
};
/// List of towns which is shown at the right of the adventure map screen or in the town screen
class CTownList : public CList
{
class CTownItem : public CListItem
{
std::shared_ptr<CAnimImage> picture;
public:
const CGTownInstance * const town;
CTownItem(CTownList *parent, const CGTownInstance * town);
std::shared_ptr<CIntObject> genSelection() override;
void update();
void select(bool on) override;
void open() override;
void showTooltip() override;
void gesture(bool on, const Point & initialPosition, const Point & finalPosition) override;
void keyPressed(EShortcut key) override;
std::string getHoverText() override;
};
std::shared_ptr<CIntObject> createItem(size_t index) override;
public:
CTownList(int visibleItemsCount, Rect widgetPosition, Point firstItemOffset, Point itemOffsetDelta, size_t initialItemsCount);
/// Select specific town and scroll if needed
void select(const CGTownInstance * town = nullptr);
/// Update town. Will add or remove it from the list if needed
void updateElement(const CGTownInstance * town);
/// Update all towns
void updateWidget();
};
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