Add statusline and accept pipes from stdin

src/buffer.d

@@ -14,6 +14,7 @@ class Buffer {
 
     this(string txt, string path) {
         text = new Rope(txt);
+        savedText = txt;
         this.path = path;
         update();
     }

src/cursor.d

@@ -14,8 +14,4 @@ class Cursor {
     void hide() {
         x = y = -1;
     }
-
-    void display() {
-        setCursor(x, y);
-    }
 }

src/main.d

@@ -25,6 +25,12 @@ void main(string[] args) {
                 fileTxt = "";
             }
         }
+    } else {
+        if (stdin.size != 0) {
+            foreach (line; stdin.byLine()) {
+                fileTxt ~= line ~ "\n";
+            }
+        }
     }
 
     Buffer buf = new Buffer(fileTxt, filename);
@@ -41,7 +47,6 @@ void main(string[] args) {
             clear();
 
             v.display();
-            cursor.display();
 
             flush();
             pollEvent(&e);

src/statusline.d

@@ -0,0 +1,29 @@
+import termbox;
+import view;
+
+class StatusLine {
+    View view;
+
+    this(View v) {
+        this.view = v;
+    }
+
+    void display() {
+        int y = view.height;
+        string file = view.buf.path;
+        if (file == "") {
+            file = "untitled";
+        }
+        if (view.buf.toString != view.buf.savedText) {
+            file ~= " +";
+        }
+        file ~= "  (" ~ to!string(view.cursor.y + 1) ~ "," ~ to!string(view.cursor.x + 1) ~ ")";
+        foreach (x; 0 .. view.width) {
+            if (x >= 1 && x < 1 + file.length) {
+                setCell(x, y, cast(uint) file[x - 1], Color.black, Color.blue);
+            } else  {
+                setCell(x, y, ' ', Color.black, Color.blue);
+            }
+        }
+    }
+}

src/view.d

@@ -2,6 +2,7 @@ import termbox;
 import buffer;
 import clipboard;
 import cursor;
+import statusline;
 
 import std.conv: to;
 import std.utf: count;
@@ -14,6 +15,7 @@ class View {
 
     Buffer buf;
     Cursor cursor;
+    StatusLine sl;
 
     this(Buffer buf, Cursor cursor, uint topline = 0, uint width = termbox.width(), uint height = termbox.height() - 2) {
         this.topline = topline;
@@ -22,6 +24,7 @@ class View {
 
         this.buf = buf;
         this.cursor = cursor;
+        this.sl = new StatusLine(this);
     }
 
     uint toCharNumber(int x, int y) {
@@ -111,7 +114,13 @@ class View {
                 cursorLeft();
             } else if (e.key == Key.mouseLeft) {
                 cursor.x = e.x;
-                cursor.y = e.y;
+                cursor.y = e.y + topline;
+                if (cursor.y - topline > height-1) {
+                    cursor.y = height + topline-1;
+                }
+                if (cursor.y > buf.lines.length) {
+                    cursor.y = cast(int) buf.lines.length-1;
+                }
                 cursor.lastX = cursor.x;
                 if (cursor.x > buf.lines[cursor.y].length) {
                     cursor.x = cast(int) buf.lines[cursor.y].length;
@@ -155,7 +164,7 @@ class View {
         }
     }
 
-    void display() {
+    void display(bool drawCursor = true) {
         uint x, y;
 
         string[] lines;
@@ -172,5 +181,15 @@ class View {
             y++;
             x = 0;
         }
+
+        if (drawCursor) {
+            if (cursor.y - topline < 0 || cursor.y - topline > height-1) {
+                hideCursor();
+            } else {
+                setCursor(cursor.x, cursor.y - topline);
+            }
+        }
+
+        sl.display();
     }
 }