type out a filename to load/save

0013-on.keychord_press

@@ -1,6 +1,6 @@
 on.keychord_press = function(chord, key)
 	if Show_file_dialog then
-		Show_file_dialog = false
+		keychord_press_on_file_dialog(chord, key)
 		return
 	end
 	if chord == 'C-=' then

0014-on.text_input

@@ -1,5 +1,7 @@
 on.text_input = function(t)
-	if Show_code then
+	if Show_file_dialog then
+		text_input_on_file_dialog(t)
+	elseif Show_code then
 		if Current_pane.editor_state.cursor_x then
 			edit.text_input(Current_pane.editor_state, t)
 		end

0117-load_button

@@ -4,6 +4,11 @@ load_button = function(x, y, r)
 			Directory_contents = nil  -- refresh from file system
 			Show_file_dialog = true
 			File_dialog_callback = function(filename)
+				if filename == '' then
+					-- clear filename
+					Current_pane.filename = nil
+					return
+				end
 				Current_pane.filename = filename
 				one_time_load()
 			end

0119-draw_file_dialog

@@ -1,4 +1,5 @@
 draw_file_dialog = function()
+	draw_file_dialog_input()
 	App.color(Menu_background)
 	love.graphics.rectangle('fill',
 		Menu_left+5,
@@ -15,8 +16,7 @@ draw_file_dialog = function()
 		if x == Menu_left+10 or x+w < Safe_width-Menu_left-10 then
 			styled_button(filename, x,y, function()
 				File_dialog_callback(filename)
-				Show_file_dialog = false
-				File_dialog_callback = nil
+				reset_file_dialog_state()
 			end)
 			x = x+w+10
 		else

0128-draw_file_dialog_input

@@ -0,0 +1,7 @@
+draw_file_dialog_input = function()
+	-- draw a suffix to ensure the cursor is visible
+	App.color(Normal_color)
+	love.graphics.print(File_dialog_input_draw_suffix, Menu_left+15, Menu_top+5)
+	local w = App.width(File_dialog_input_draw_suffix)
+	draw_cursor(Menu_left+15+w, Menu_top+5, Current_pane.editor_state.line_height)
+end

0129-draw_cursor

@@ -0,0 +1,7 @@
+draw_cursor = function(x, y, line_height)
+	-- blink every 0.5s
+	if math.floor(Cursor_time*2)%2 == 0 then
+		App.color(Cursor_color)
+		love.graphics.rectangle('fill', x,y, 3,line_height)
+	end
+end

0131-keychord_press_on_file_dialog

@@ -0,0 +1,13 @@
+keychord_press_on_file_dialog = function(chord, key)
+	if chord == 'escape' then
+		reset_file_dialog_state()
+	elseif chord == 'return' then
+		File_dialog_callback(File_dialog_input_text)
+		reset_file_dialog_state()
+	elseif chord == 'backspace' then
+		local len = utf8.len(File_dialog_input_text)
+		local byte_offset = Text.offset(File_dialog_input_text, len)
+		File_dialog_input_text = string.sub(File_dialog_input_text, 1, byte_offset-1)
+		refresh_file_dialog_input_start()
+	end
+end

0132-text_input_on_file_dialog

@@ -0,0 +1,5 @@
+text_input_on_file_dialog = function(t)
+	-- the file dialog input only supports appending
+	File_dialog_input_text = File_dialog_input_text..t
+	refresh_file_dialog_input_start()
+end

0133-File_dialog_input_text

@@ -0,0 +1 @@
+File_dialog_input_text = ''

0134-reset_file_dialog_state

@@ -0,0 +1,5 @@
+reset_file_dialog_state = function()
+	Show_file_dialog = false
+	File_dialog_callback = nil
+	File_dialog_input_text = ''
+end

0138-File_dialog_input_start_suffix

@@ -0,0 +1,4 @@
+-- Cursor in the file dialog is always at end of input text.
+-- Cache where we start rendering the input from
+-- (for narrow devices)
+File_dialog_input_start_suffix = ''

0139-refresh_file_dialog_start

@@ -0,0 +1,2 @@
+refresh_file_dialog_start = function()
+end

0140-refresh_file_dialog_input_start

@@ -0,0 +1,11 @@
+refresh_file_dialog_input_start = function()
+	local len = utf8.len(File_dialog_input_text)
+	for start=0,len do
+		local s = File_dialog_input_text:sub(start)
+		if App.width(s) < Safe_width-Menu_left-15-15 then
+			File_dialog_input_draw_suffix = s
+			return
+		end
+	end
+	assert(false, "refresh_file_dialog_input_start isn't working right")
+end

0141-File_dialog_input_draw_suffix

@@ -0,0 +1,4 @@
+-- Cursor in the file dialog is always at end of input text.
+-- Cache where we start rendering the input from
+-- (for narrow devices)
+File_dialog_input_draw_suffix = ''