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#pragma once
#include <string>
#include "command.h"
#include "textblob.h"
using namespace std;
//Everything is zero-based.
class Manager;
class Buffer{
struct Cell{
char c;
bool special;
i64 linex; //position in line
};
struct ScreenLine{
i64 line,part; //part: n'th screen line of the logical line `line`
i64 fromx; //starting at what x into the line does this screen line have text
vector<Cell> cells;
};
struct Cursorpos{
i64 line,x;
};
struct Screenpos{
i64 y,x;
};
Manager *const manager;
const bool singleLineMode=false;
TextBlob tb;
vector<ScreenLine> screen;
i64 lastWidth=-1,lastHeight=-1; //excluding the gutter
Cursorpos cursor={0,0};
vector<ScreenLine> layoutLine(const string &line,i64 linenum,i64 width);
void performInitialLayout(i64 width,i64 height);
void renewLayout(i64 topLine,i64 topPart,i64 width,i64 height);
void relayoutScreen();
void scrollUp();
Screenpos findCursorInScreen() const;
void handleCommand(const Command &cmd);
public:
string filename;
Buffer(Manager *manager);
Buffer(Manager *manager,bool singleLineMode);
void receive(const Command &cmd);
void show(i64 atx,i64 aty,i64 width,i64 height);
string getText() const;
};
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