add sendFocus option. see #149.

README.md

@@ -332,6 +332,7 @@ The screen on which every other node renders.
   replaced by `'??'`, `'?'`, `''` respectively. (NOTE: iTerm2 cannot display
   combining characters properly. Blessed simply removes them from an element's
   content if iTerm2 is detected).
+- __sendFocus__ - send focus events after mouse is enabled.
 
 ##### Properties:
 

lib/program.js

@@ -3202,10 +3202,17 @@ Program.prototype.setMouse = function(opt, enable) {
     opt.vt200Hilite = opt.hiliteTracking;
   }
 
-  if (enable) {
+  if (enable === true) {
+    if (this._currentMouse) {
+      this.setMouse(opt);
+      Object.keys(opt).forEach(function(key) {
+        this._currentMouse[key] = opt[key];
+      }, this);
+      return;
+    }
     this._currentMouse = opt;
     this.mouseEnabled = true;
-  } else {
+  } else if (enable === false) {
     delete this._currentMouse;
     this.mouseEnabled = false;
   }

lib/widgets/screen.js

@@ -352,6 +352,9 @@ Screen.prototype._listenMouse = function(el) {
   this._listenedMouse = true;
 
   this.program.enableMouse();
+  if (this.options.sendFocus) {
+    this.program.setMouse({ sendFocus: true }, true);
+  }
 
   this.on('render', function() {
     self._needsClickableSort = true;
@@ -1648,7 +1651,12 @@ Screen.prototype.spawn = function(file, args, options) {
 
     program.alternateBuffer();
     // program.csr(0, program.rows - 1);
-    if (mouse) program.enableMouse();
+    if (mouse) {
+      program.enableMouse();
+      if (self.options.sendFocus) {
+        self.program.setMouse({ sendFocus: true }, true);
+      }
+    }
 
     screen.alloc();
     screen.render();

test/program-mouse.js

@@ -18,6 +18,11 @@ program.alternateBuffer();
 program.enableMouse();
 program.hideCursor();
 
+program.setMouse({ sendFocus: true }, true);
+//program._currentMouse.sendFocus = true;
+//program.enableMouse(program._currentMouse);
+//program.write('\x1b[?1004h');
+
 program.on('mouse', function(data) {
   program.cup(data.y, data.x);
   program.write(' ', 'blue bg');
@@ -25,6 +30,33 @@ program.on('mouse', function(data) {
   program.write(util.inspect(data));
 });
 
+program.on('resize', function(data) {
+  setTimeout(function() {
+    program.clear();
+    program.cup(0, 0);
+    program.write(util.inspect({ cols: program.cols, rows: program.rows }));
+  }, 200);
+});
+
+process.on('SIGWINCH', function(data) {
+  setTimeout(function() {
+    program.cup(1, 0);
+    program.write(util.inspect({ winch: true, cols: program.cols, rows: program.rows }));
+  }, 200);
+});
+
+program.on('focus', function(data) {
+  program.clear();
+  program.cup(0, 0);
+  program.write('FOCUSIN');
+});
+
+program.on('blur', function(data) {
+  program.clear();
+  program.cup(0, 0);
+  program.write('FOCUSOUT');
+});
+
 program.key(['q', 'escape', 'C-c'], function() {
   program.showCursor();
   program.disableMouse();