IntrovertedMage · March 5, 2025 02:11
diff --git a/2-preferred-dictionaries-menu.lua b/2-preferred-dictionaries-menu.lua
 local Menu = require("ui/widget/menu")
 local ReaderDictionary = require("apps/reader/modules/readerdictionary")
 local Event = require("ui/event")
 local UIManager = require("ui/uimanager")
 local util  = require("util")
 local _ = require("gettext")

 local addToMainMenu_orig = ReaderDictionary.addToMainMenu

 ReaderDictionary.addToMainMenu = function(self,menu_items)
    addToMainMenu_orig(self,menu_items)

    if self.ui.view then
        table.insert(menu_items.dictionary_settings.sub_item_table, 3,
            {
                text = _("Set preferred dictionaries for this book"),
                keep_menu_open = true,
                callback = function(touchmenu_instance)
                    self:showPreferredDictionariesMenu(function()
                        if touchmenu_instance then touchmenu_instance:updateItems() end
                    end)
                end,
            }
        )
    end
 end

 local PreferredDictionaryWidget = Menu:extend{
    title = _("Manage preferred dictionaries"),
    is_popout = false,
    is_borderless = true,
 }

 PreferredDictionaryWidget.init = function(self)
    self.item_table = self:generateDictionaryOptions(self.ReaderDictionary.enabled_dict_names)
    self.radius = 0
    Menu.init(self)
 end

 PreferredDictionaryWidget.generateDictionaryOptions = function(self,enabled_dictionaries)
    local item_table = {}

    for _, dictionary in ipairs({unpack(enabled_dictionaries)}) do
        local dictionary_name = dictionary
        if self.ReaderDictionary.preferred_dictionaries then
            -- If current result is from a preferred dictionary, prepend dict name
            -- (shown in the window title) with its preference number
            for idx, name in ipairs(self.ReaderDictionary.preferred_dictionaries) do
                if dictionary == name then
                    -- Use number in circle symbol (U+2460...2473)
                    local symbol = util.unicodeCodepointToUtf8(0x245F + (idx < 20 and idx or 20))
                    dictionary = symbol .. " " .. dictionary
                    break
                end
            end
        end
        table.insert(item_table,{text = dictionary, idx = _, dictionary_name = dictionary_name})
    end

    return item_table

 end

 PreferredDictionaryWidget.onMenuSelect = function (self,item)
    self.ReaderDictionary.ui:handleEvent(
        Event:new("TogglePreferredDict", item.dictionary_name)
    )
    self.item_table = self:generateDictionaryOptions(self.ReaderDictionary.enabled_dict_names)
    self:updateItems(1,true)
 end

 ReaderDictionary.showPreferredDictionariesMenu = function (self,changed_callback)
    local dictionary_widget = PreferredDictionaryWidget:new{
        ReaderDictionary = self,
        callback = function()
            UIManager:setDirty(nil,"ui")
            changed_callback()
        end
    }
    UIManager:show(dictionary_widget)
 end
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