add new apis and samples

samples/msg-sender.lua

@@ -8,10 +8,10 @@ end
 
 function on_click(idx)
     if idx == 1 then
-        system:send_message("text", "msg-receiver.lua")
+        aio:send_message("text", "msg-receiver.lua")
     elseif idx == 2 then
-        system:send_message(1)
+        aio:send_message(1)
     else
-        system:send_message{ "one", "two", "three" }
+        aio:send_message{ "one", "two", "three" }
     end
 end

samples/screen-state-widget.lua

@@ -0,0 +1,48 @@
+-- name = "Screen state"
+
+local json = require "json"
+
+function on_resume()
+    ui:show_buttons{
+        "Save screen",
+        "Restore screen",
+    }
+end
+
+function on_click(idx)
+    if idx == 1 then
+        save_state()
+    else
+        restore_state()
+    end
+end
+
+function save_state()
+    local state = aio:get_active_widgets()
+    local json_str = json.encode(state)
+
+    files:write("screen-state", json_str)
+    ui:show_toast("Screen state saved!")
+end
+
+function restore_state()
+    local json_str = files:read("screen-state")
+    local state = json.decode(json_str)
+
+    remove_all_widgets()
+
+    for k,v in pairs(state) do
+        aio:add_widget(v.name, v.position)
+    end
+
+    ui:show_toast("Screen state restored!")
+end
+
+function remove_all_widgets()
+    local curr_state = aio:get_active_widgets()
+    for k,v in pairs(curr_state) do
+        if (v.name ~= "screen-state-widget.lua") then
+            aio:remove_widget(v.position)
+        end
+    end
+end

samples/widget_add_remove_sample.lua

@@ -1,11 +1,26 @@
 function on_resume()
-    ui:show_buttons({ "Add clock widget", "Remove clock widget" })
+    ui:show_lines{
+        "Add clock widget",
+        "Add clock widget (position 1)",
+        "Add clock widget (position 5)",
+        "Remove clock widget",
+        "Swap first and third widgets",
+        "Swap back",
+    }
 end
 
 function on_click(idx)
     if idx == 1 then
         aio:add_widget("clock")
-    else
+    elseif idx == 2 then
+        aio:add_widget("clock", 1)
+    elseif idx == 3 then
+        aio:add_widget("clock", 5)
+    elseif idx == 4 then
         aio:remove_widget("clock")
+    elseif idx == 5 then
+        aio:move_widget(1, 3)
+    elseif idx == 6 then
+        aio:move_widget(3, 1)
     end
 end

samples/widgets-sample.lua

@@ -0,0 +1,28 @@
+local fmt = require "fmt"
+
+function on_resume()
+    local widgets = aio:get_active_widgets()
+    local tab = {}
+
+    for k,v in pairs(widgets) do
+        table.insert(tab, { fmt.bold(v.name), "(un)fold", "remove" })
+    end
+
+    ui:show_table(tab)
+end
+
+function on_click(idx)
+    local widget_num = math.ceil(idx / 3)
+    local action = idx % 3
+
+    if action == 0 then
+        aio:remove_widget(widget_num)
+    elseif action == 2 then
+        aio:fold_widget(widget_num)
+    end
+end
+
+function on_widget_action(action, name)
+    ui:show_toast(name.." "..action)
+    on_resume()
+end

samples/widgets-sample2.lua

@@ -0,0 +1,13 @@
+local fmt = require "fmt"
+
+function on_resume()
+    local widgets = aio:get_available_widgets()
+    local tab = {}
+
+    for k,v in pairs(widgets) do
+        table.insert(tab, { fmt.bold(v.name), v.type })
+    end
+
+    ui:show_table(tab)
+end
+