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// Copyright (C) 2002-2012 Nikolaus Gebhardt, Modified by Mustapha Tachouct
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#ifndef GUIEDITBOXWITHSCROLLBAR_HEADER
#define GUIEDITBOXWITHSCROLLBAR_HEADER
#include "IGUIEditBox.h"
#include "IOSOperator.h"
#include "IGUIScrollBar.h"
#include <vector>
using namespace irr;
using namespace irr::gui;
class GUIEditBoxWithScrollBar : public IGUIEditBox
{
public:
//! constructor
GUIEditBoxWithScrollBar(const wchar_t* text, bool border, IGUIEnvironment* environment,
IGUIElement* parent, s32 id, const core::rect<s32>& rectangle,
bool writable = true, bool has_vscrollbar = true);
//! destructor
virtual ~GUIEditBoxWithScrollBar();
//! Sets another skin independent font.
virtual void setOverrideFont(IGUIFont* font = 0);
//! Gets the override font (if any)
/** \return The override font (may be 0) */
virtual IGUIFont* getOverrideFont() const;
//! Get the font which is used right now for drawing
/** Currently this is the override font when one is set and the
font of the active skin otherwise */
virtual IGUIFont* getActiveFont() const;
//! Sets another color for the text.
virtual void setOverrideColor(video::SColor color);
//! Gets the override color
virtual video::SColor getOverrideColor() const;
//! Sets if the text should use the overide color or the
//! color in the gui skin.
virtual void enableOverrideColor(bool enable);
//! Checks if an override color is enabled
/** \return true if the override color is enabled, false otherwise */
virtual bool isOverrideColorEnabled(void) const;
//! Sets whether to draw the background
virtual void setDrawBackground(bool draw);
//! Turns the border on or off
virtual void setDrawBorder(bool border);
//! Enables or disables word wrap for using the edit box as multiline text editor.
virtual void setWordWrap(bool enable);
//! Checks if word wrap is enabled
//! \return true if word wrap is enabled, false otherwise
virtual bool isWordWrapEnabled() const;
//! Enables or disables newlines.
/** \param enable: If set to true, the EGET_EDITBOX_ENTER event will not be fired,
instead a newline character will be inserted. */
virtual void setMultiLine(bool enable);
//! Checks if multi line editing is enabled
//! \return true if mult-line is enabled, false otherwise
virtual bool isMultiLineEnabled() const;
//! Enables or disables automatic scrolling with cursor position
//! \param enable: If set to true, the text will move around with the cursor position
virtual void setAutoScroll(bool enable);
//! Checks to see if automatic scrolling is enabled
//! \return true if automatic scrolling is enabled, false if not
virtual bool isAutoScrollEnabled() const;
//! Gets the size area of the text in the edit box
//! \return Returns the size in pixels of the text
virtual core::dimension2du getTextDimension();
//! Sets text justification
virtual void setTextAlignment(EGUI_ALIGNMENT horizontal, EGUI_ALIGNMENT vertical);
//! called if an event happened.
virtual bool OnEvent(const SEvent& event);
//! draws the element and its children
virtual void draw();
//! Sets the new caption of this element.
virtual void setText(const wchar_t* text);
//! Sets the maximum amount of characters which may be entered in the box.
//! \param max: Maximum amount of characters. If 0, the character amount is
//! infinity.
virtual void setMax(u32 max);
//! Returns maximum amount of characters, previously set by setMax();
virtual u32 getMax() const;
//! Sets whether the edit box is a password box. Setting this to true will
/** disable MultiLine, WordWrap and the ability to copy with ctrl+c or ctrl+x
\param passwordBox: true to enable password, false to disable
\param passwordChar: the character that is displayed instead of letters */
virtual void setPasswordBox(bool passwordBox, wchar_t passwordChar = L'*');
//! Returns true if the edit box is currently a password box.
virtual bool isPasswordBox() const;
//! Updates the absolute position, splits text if required
virtual void updateAbsolutePosition();
virtual void setWritable(bool writable);
//! Change the background color
virtual void setBackgroundColor(const video::SColor &bg_color);
//! Writes attributes of the element.
virtual void serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options) const;
//! Reads attributes of the element
virtual void deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options);
protected:
//! Breaks the single text line.
void breakText();
//! sets the area of the given line
void setTextRect(s32 line);
//! returns the line number that the cursor is on
s32 getLineFromPos(s32 pos);
//! adds a letter to the edit box
void inputChar(wchar_t c);
//! calculates the current scroll position
void calculateScrollPos();
//! calculated the FrameRect
void calculateFrameRect();
//! send some gui event to parent
void sendGuiEvent(EGUI_EVENT_TYPE type);
//! set text markers
void setTextMarkers(s32 begin, s32 end);
//! create a Vertical ScrollBar
void createVScrollBar();
//! update the vertical scrollBar (visibilty & position)
void updateVScrollBar();
bool processKey(const SEvent& event);
bool processMouse(const SEvent& event);
s32 getCursorPos(s32 x, s32 y);
bool m_mouse_marking;
bool m_border;
bool m_background;
bool m_override_color_enabled;
s32 m_mark_begin;
s32 m_mark_end;
video::SColor m_override_color;
gui::IGUIFont *m_override_font, *m_last_break_font;
IOSOperator* m_operator;
u32 m_blink_start_time;
s32 m_cursor_pos;
s32 m_hscroll_pos, m_vscroll_pos; // scroll position in characters
u32 m_max;
bool m_word_wrap, m_multiline, m_autoscroll, m_passwordbox;
wchar_t m_passwordchar;
EGUI_ALIGNMENT m_halign, m_valign;
std::vector<core::stringw> m_broken_text;
std::vector<s32> m_broken_text_positions;
core::rect<s32> m_current_text_rect, m_frame_rect; // temporary values
u32 m_scrollbar_width;
IGUIScrollBar *m_vscrollbar;
bool m_writable;
bool m_bg_color_used;
video::SColor m_bg_color;
};
#endif // GUIEDITBOXWITHSCROLLBAR_HEADER
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