Dispatcher: add "Save book metadata"

frontend/apps/reader/readerui.lua

@@ -21,6 +21,7 @@ local InfoMessage = require("ui/widget/infomessage")
 local InputContainer = require("ui/widget/container/inputcontainer")
 local InputDialog = require("ui/widget/inputdialog")
 local LanguageSupport = require("languagesupport")
+local Notification = require("ui/widget/notification")
 local PluginLoader = require("pluginloader")
 local ReaderActivityIndicator = require("apps/reader/modules/readeractivityindicator")
 local ReaderBack = require("apps/reader/modules/readerback")
@@ -742,8 +743,12 @@ function ReaderUI:saveSettings()
     G_reader_settings:flush()
 end
 
-function ReaderUI:onFlushSettings()
+function ReaderUI:onFlushSettings(show_notification)
     self:saveSettings()
+    if show_notification then
+        -- Invoked from dispatcher to explicitely flush settings
+        Notification:notify(_("Book metadata saved."))
+    end
 end
 
 function ReaderUI:closeDocument()

frontend/dispatcher.lua

@@ -144,7 +144,8 @@ local settingsList = {
     swap_page_turn_buttons = {category="none", event="SwapPageTurnButtons", title=_("Invert page turn buttons"), reader=true, condition=Device:hasKeys(), separator=true},
     set_highlight_action = {category="string", event="SetHighlightAction", title=_("Set highlight action"), args_func=ReaderHighlight.getHighlightActions, reader=true},
     cycle_highlight_action = {category="none", event="CycleHighlightAction", title=_("Cycle highlight action"), reader=true},
-    cycle_highlight_style = {category="none", event="CycleHighlightStyle", title=_("Cycle highlight style"), reader=true},
+    cycle_highlight_style = {category="none", event="CycleHighlightStyle", title=_("Cycle highlight style"), reader=true, separator=true},
+    flush_settings = {category="none", event="FlushSettings", arg=true, title=_("Save book metadata"), reader=true, separator=true},
     page_jmp = {category="absolutenumber", event="GotoViewRel", min=-100, max=100, title=_("Turn pages"), reader=true},
     panel_zoom_toggle = {category="none", event="TogglePanelZoomSetting", title=_("Toggle panel zoom"), paging=true, separator=true},
 
@@ -347,6 +348,7 @@ local dispatcher_menu_order = {
     "set_highlight_action",
     "cycle_highlight_action",
     "cycle_highlight_style",
+    "flush_settings",
     "panel_zoom_toggle",
 
     "visible_pages",