Initial

1 files changed, 151 insertions, 0 deletions

diff --git a/manager.cpp b/manager.cpp
new file mode 100644
index 0000000..01c9e01
--- /dev/null
+++ b/manager.cpp
@@ -0,0 +1,151 @@
+#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);
+	} else if(cmd[0]=="insert_char"){
+		if(activeIdx==-1)bel();
+		else buffers[activeIdx].receive(cmd);
+	} else if(cmd[0]=="error"){
+		pushcursor();
+		Size termsize=gettermsize();
+		moveto(0,termsize.h-1);
+		Style errorStyle={1,9,true,false};
+		setstyle(&errorStyle);
+		tprintf("%s",cmd[1].data());
+		popcursor();
+	} else if(cmd[0]=="quit_app"){
+		should_quit=true;
+	} else {
+		THROW("Unknown command");
+	}
+}
+
+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();
+
+		auto it=global_keybindings.find(key);
+		if(it!=global_keybindings.end()){
+			receive(it->second);
+		} else {
+			receive({"error","Unbound key: "+to_string(key)});
+		}
+		if(should_quit)break;
+	}
+
+	return 0;
+}