From b972e26307d0f87ffdc5b9a88d95ab3fe319d067 Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Wed, 11 Jan 2017 22:32:47 +0100
Subject: Show basic prompt

---
 buffer.cpp  | 27 ++++++++++++++++++---------
 buffer.h    | 19 +++++++++++++------
 config.cpp  |  3 ++-
 manager.cpp | 40 +++++++++++++++++++++++++++++++++++++++-
 manager.h   |  2 ++
 5 files changed, 74 insertions(+), 17 deletions(-)

diff --git a/buffer.cpp b/buffer.cpp
index 05bbffa..645d63c 100644
--- a/buffer.cpp
+++ b/buffer.cpp
@@ -16,6 +16,9 @@ using namespace std;
 Buffer::Buffer(Manager *manager)
 	:manager(manager){}
 
+Buffer::Buffer(Manager *manager,bool singleLineMode)
+	:manager(manager),singleLineMode(singleLineMode){}
+
 void Buffer::handleCommand(const Command &cmd){
 	//TODO: optimise the relayoutScreen's in this function
 
@@ -391,7 +394,7 @@ void Buffer::show(i64 atx,i64 aty,i64 width,i64 height){
 	static const Style textStyle={9,9,false,false};
 	static const Style specialStyle={5,9,false,false};
 
-	i64 gutterWidth=numberWidth(tb.numLines())+2;
+	i64 gutterWidth=singleLineMode ? 0 : numberWidth(tb.numLines())+2;
 	i64 newWidth=width-gutterWidth;
 	if(newWidth!=lastWidth||height!=lastHeight||screen.size()==0){
 		if(lastWidth==-1)performInitialLayout(newWidth,height);
@@ -408,14 +411,16 @@ void Buffer::show(i64 atx,i64 aty,i64 width,i64 height){
 	i64 curScreenX=-1,curScreenY=-1;
 	// cerr<<"Buffer::show: screen.size()="<<screen.size()<<endl;
 	for(y=0;y<(i64)screen.size();y++){
-		if(screen[y].fromx==0){
-			setstyle(&gutterStyle);
-			moveto(atx+gutterWidth-1-numberWidth(screen[y].line+1),aty+y);
-			tprintf("%" PRIi64,screen[y].line+1);
-		} else if(y==0){
-			setstyle(&gutterContinuationStyle);
-			moveto(atx+gutterWidth-2-numberWidth(screen[y].line+1),aty+y);
-			tprintf("^%" PRIi64,screen[y].line+1);
+		if(!singleLineMode){
+			if(screen[y].fromx==0){
+				setstyle(&gutterStyle);
+				moveto(atx+gutterWidth-1-numberWidth(screen[y].line+1),aty+y);
+				tprintf("%" PRIi64,screen[y].line+1);
+			} else if(y==0){
+				setstyle(&gutterContinuationStyle);
+				moveto(atx+gutterWidth-2-numberWidth(screen[y].line+1),aty+y);
+				tprintf("^%" PRIi64,screen[y].line+1);
+			}
 		}
 
 		moveto(atx+gutterWidth,aty+y);
@@ -448,3 +453,7 @@ void Buffer::show(i64 atx,i64 aty,i64 width,i64 height){
 		moveto(curScreenX,curScreenY);
 	}
 }
+
+string Buffer::getText() const {
+	return tb.fullText();
+}
diff --git a/buffer.h b/buffer.h
index 64d7aa4..119097e 100644
--- a/buffer.h
+++ b/buffer.h
@@ -13,9 +13,6 @@ using namespace std;
 class Manager;
 
 class Buffer{
-	TextBlob tb;
-	Manager *manager;
-
 	struct Cell{
 		char c;
 		bool special;
@@ -26,18 +23,25 @@ class Buffer{
 		i64 fromx; //starting at what x into the line does this screen line have text
 		vector<Cell> cells;
 	};
-	vector<ScreenLine> screen;
-	i64 lastWidth=-1,lastHeight=-1; //excluding the gutter
 
 	struct Cursorpos{
 		i64 line,x;
 	};
-	Cursorpos cursor={0,0};
 
 	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);
@@ -52,7 +56,10 @@ 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;
 };
diff --git a/config.cpp b/config.cpp
index 8bd86f7..07db619 100644
--- a/config.cpp
+++ b/config.cpp
@@ -9,7 +9,8 @@ using namespace std;
 
 
 KeyInputMachine global_keyinput({
-	{{KEY_CTRL+'X',KEY_CTRL+'Q'},{"quit_app"}},
+	{{KEY_CTRL+'Q'},{"quit_app"}},
+	{{KEY_ALT+';'},{"display_prompt"}},
 	{{KEY_BACKSPACE},{"delete_backward"}},
 	{{KEY_DELETE},{"delete_forward"}},
 	{{'\n'},{"insert_newline"}},
diff --git a/manager.cpp b/manager.cpp
index 951d84b..059a33f 100644
--- a/manager.cpp
+++ b/manager.cpp
@@ -19,13 +19,16 @@ void Manager::receive(const Command &cmd){
 	} else if(cmd[0]=="error"){
 		pushcursor();
 		Size termsize=gettermsize();
-		moveto(0,termsize.h-1);
 		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);
@@ -151,3 +154,38 @@ int Manager::io(){
 
 	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});
+}
diff --git a/manager.h b/manager.h
index eca83a1..72fd2d3 100644
--- a/manager.h
+++ b/manager.h
@@ -14,6 +14,8 @@ class Manager{
 	i64 activeIdx;
 	bool should_quit=false;
 
+	void runPrompt();
+
 public:
 	Manager();
 
-- 
cgit v1.2.3-54-g00ecf