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#include <cassert>
#include <termio.h>
#include "config.h"
#include "manager.h"
#include "throw.h"
using namespace std;
Manager::Manager()
:activeIdx(-1){}
void Manager::receive(const Command &cmd){
if(cmd[0]=="open_file"){
buffers.emplace_back(this);
buffers.back().receive(cmd);
if(activeIdx==-1)activeIdx=buffers.size()-1;
} else if(cmd[0]=="error"){
pushcursor();
Size termsize=gettermsize();
Style errorStyle={1,9,true,false};
fillrect(0,termsize.h-1,termsize.w,1,' ');
moveto(0,termsize.h-1);
setstyle(&errorStyle);
tprintf("%s",cmd[1].data());
popcursor();
} else if(cmd[0]=="quit_app"){
should_quit=true;
} else if(cmd[0]=="display_prompt"){
runPrompt();
} else {
if(activeIdx==-1)bel();
else buffers[activeIdx].receive(cmd);
}
}
void Manager::show(){
if(buffers.size()==0)return;
string bartext;
i64 hilight_start=-1,hilight_len;
for(size_t i=0;i<buffers.size();i++){
const string &fname=buffers[i].filename.size()==0?"<New file>":buffers[i].filename;
string tabtext=" ";
for(size_t j=0;j<fname.size();j++){
if(fname[j]=='/'){
tabtext+='/';
if(j+1<fname.size()){
tabtext+=fname[j+1];
j++;
}
}
}
i64 nameidx;
for(nameidx=fname.size()-1;nameidx>=0;nameidx--){
if(fname[nameidx]=='/'){
nameidx++;
break;
}
}
//+1 because the first char was already appended
tabtext+=fname.substr(nameidx+1,string::npos);
tabtext+=' ';
if((i64)i==activeIdx){
hilight_start=bartext.size();
hilight_len=tabtext.length();
}
bartext+=tabtext;
}
assert(hilight_start!=-1);
Size termsize=gettermsize();
i64 print_start=-1;
if(bartext.size()<=(size_t)termsize.w){
print_start=0;
} else {
print_start=hilight_start+hilight_len/2-termsize.w/2;
if(print_start<0){
print_start=0;
} else if(print_start+(size_t)termsize.w>=bartext.size()){
print_start=bartext.size()-termsize.w;
}
}
Style backStyle={7,0,false,false};
Style activeStyle={7,4,true,false};
pushcursor();
moveto(0,0);
setstyle(&backStyle);
if(print_start>=hilight_start+hilight_len||print_start+termsize.w<=hilight_start){
string text=bartext.substr(print_start,termsize.w);
tprintf("%s",text.data());
} else {
string text=bartext.substr(print_start,hilight_start-print_start);
tprintf("%s",text.data());
text=bartext.substr(hilight_start,hilight_len);
setstyle(&activeStyle);
tprintf("%s",text.data());
text=bartext.substr(hilight_start+hilight_len,termsize.w-(hilight_start+hilight_len-print_start));
setstyle(&backStyle);
tprintf("%s",text.data());
}
popcursor();
}
class TermioRAII{
public:
TermioRAII(){
initscreen();
initkeyboard(true);
}
~TermioRAII(){
endkeyboard();
endscreen();
}
};
int Manager::io(){
TermioRAII termioRAII;
if(activeIdx==-1){
buffers.emplace_back(this);
activeIdx=0;
}
while(true){
Size termsize=gettermsize();
show();
buffers[activeIdx].show(0,1,termsize.w,termsize.h-2);
redraw();
int key=tgetkey();
Either<bool,Command> ret=global_keyinput.input(key);
if(ret.isLeft()){
if(!ret.fromLeft()){
bel();
receive({"error","Unbound key sequence"});
}
} else {
receive(ret.fromRight());
}
if(should_quit)break;
}
return 0;
}
void Manager::runPrompt(){
Size termsize=gettermsize();
moveto(0,termsize.h-1);
tputc(':');
global_keyinput.cancel();
string inputLine;
Buffer promptBuffer(this,true);
while(true){
termsize=gettermsize();
promptBuffer.show(1,termsize.h-1,termsize.w-1,1);
redraw();
int key=tgetkey();
Either<bool,Command> ret=global_keyinput.input(key);
if(ret.isLeft()){
if(!ret.fromLeft()){
bel();
}
} else {
if(ret.fromRight()[0]=="insert_newline"){
inputLine=promptBuffer.getText();
break;
} else {
promptBuffer.receive(ret.fromRight());
}
}
}
receive({"error",inputLine});
}
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