Add enter press support to text boxes

docs/API.md

@@ -113,8 +113,11 @@
 ###Field and Text Area
 * element:setText( text ) - set the caption of the button
 * element:getText() - get the caption of the field
-* element:setImage( filename ) - sets the background of the field
+* element:isPassword() - returns true if the field is a password field
-* element:getImage() - get the background filename of the field
+* element:isMultiline() - returns true if the field is a miltiline textarea
+* element:setCloseOnEnter(bool) - Set the field_close_on_enter string, usually set to false to disable the formspec close on enter
+* element:getCloseOnEnter() - Get the field_close_on_enter value
+* element:onKeyEnter(func(self, state, playername) - process the Enter key action for this fiels
 
 ###List box
 * element:onClick( func(self,state,idx,playername) ) - function to run when listbox item idx is clicked

docs/example.lua

@@ -8,7 +8,12 @@ local s = smartfs.create("smartfs:form", function(state)
 	end
 	usr:setSize(3,0.5)
 	usr:setBackground("halo.png")
-	state:field(7.25,1.25,3,1,"txt","Textbox")
+	local textbox = state:field(7.25,1.25,3,1,"txt","Textbox")
+	textbox:setCloseOnEnter(false)
+	textbox:onKeyEnter(function(self, state, playername)
+		print("Enter pressed in Textbox field")
+	end)
+
 	state:image(0,0,2,2,"img","default_stone.png")
 	local toggle = state:toggle(0,2,3,1,"tg",{"plenty..","of..","custom..","elements"})
 	toggle:onToggle(function(self, state, player)

smartfs.lua

@@ -510,6 +510,13 @@ function smartfs._makeState_(form, params, location, newplayer)
 					todo.element:submit(todo.value, player)
 				end
 			end
+			-- handle key_enter
+			if fields.key_enter and fields.key_enter_field then
+				local element = self:_get_element_recursive_(fields.key_enter_field)
+				if element and element.submit_key_enter then
+					element:submit_key_enter(fields[fields.key_enter_field], player)
+				end
+			end
 
 			if not fields.quit and not self.closed then
 				self:show()
@@ -1003,7 +1010,8 @@ smartfs.element("field", {
 				self:getAbsName()..
 				";"..
 				minetest.formspec_escape(self.data.label)..
-				"]"
+				"]"..
+				self:getCloseOnEnterString()
 		else
 			return "field["..
 				self.data.pos.x..","..self.data.pos.y..
@@ -1015,7 +1023,8 @@ smartfs.element("field", {
 				minetest.formspec_escape(self.data.label)..
 				";"..
 				minetest.formspec_escape(self.data.value)..
-				"]"
+				"]"..
+				self:getCloseOnEnterString()
 		end
 	end,
 	setText = function(self,text)
@@ -1029,7 +1038,28 @@ smartfs.element("field", {
 	end,
 	isMultiline = function(self,bool)
 		self.data.ml = bool
-	end
+	end,
+	getCloseOnEnterString = function(self)
+		if self.close_on_enter == nil then
+			return ""
+		else
+			return "field_close_on_enter["..self:getAbsName()..";"..tostring(self.close_on_enter).."]"
+		end
+	end,
+	setCloseOnEnter = function(self, value)
+		self.close_on_enter = value
+	end,
+	getCloseOnEnter = function(self)
+		return self.close_on_enter
+	end,
+	submit_key_enter = function(self, field, player)
+		if self._key_enter then
+			self:_key_enter(self.root, player)
+		end
+	end,
+	onKeyEnter = function(self,func)
+		self._key_enter = func
+	end,
 })
 
 smartfs.element("image", {