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Simplify and fix scrolling logic

This commit is contained in:
Ksaper 2023-02-25 04:17:46 +02:00
parent 69c5653a4c
commit 49c815641c
1 changed files with 8 additions and 14 deletions
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22
widget/app_launcher/init.lua
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@ -88,32 +88,26 @@ local function scroll(self, dir)
return
end
local pos = self:get_grid():get_widget_position(self._private.active_widget)
local can_scroll = false
local step_size = 0
local next_app_index = nil
local if_cant_scroll_func = nil
if dir == "up" then
can_scroll = self:get_grid():index(self._private.active_widget) > 1
step_size = -1
next_app_index = self:get_grid():index(self._private.active_widget) - 1
if_cant_scroll_func = function() self:page_backward("up") end
elseif dir == "down" then
can_scroll = self:get_grid():index(self._private.active_widget) < #self:get_grid().children
step_size = 1
next_app_index = self:get_grid():index(self._private.active_widget) + 1
if_cant_scroll_func = function() self:page_forward("down") end
elseif dir == "left" then
can_scroll = self:get_grid():get_widgets_at(pos.row, pos.col - 1) ~= nil
step_size = -self:get_grid().forced_num_rows
next_app_index = self:get_grid():index(self._private.active_widget) - self:get_grid().forced_num_rows
if_cant_scroll_func = function() self:page_backward("left") end
elseif dir == "right" then
can_scroll = self:get_grid():get_widgets_at(pos.row, pos.col + 1) ~= nil
step_size = self:get_grid().forced_num_cols
next_app_index = self:get_grid():index(self._private.active_widget) + self:get_grid().forced_num_rows
if_cant_scroll_func = function() self:page_forward("right") end
end
if can_scroll then
local app = gtable.cycle_value(self:get_grid().children, self._private.active_widget, step_size)
app:select()
local next_app = self:get_grid().children[next_app_index]
if next_app then
next_app:select()
self:emit_signal("scroll", dir)
else
if_cant_scroll_func()