New startup option: Folder shortcuts (#4220)

frontend/apps/filemanager/filemanager.lua

@@ -825,6 +825,7 @@ function FileManager:getStartWithMenuTable()
     local start_withs = {
         filemanager = {_("file browser"), _("Start with file browser")},
         history = {_("history"), _("Start with history")},
+        folder_shortcuts = {_("folder shortcuts"), _("Start with folder shortcuts")},
         last = {_("last file"), _("Start with last file")},
     }
     local set_sw_table = function(start_with)
@@ -849,6 +850,7 @@ function FileManager:getStartWithMenuTable()
         sub_item_table = {
             set_sw_table("filemanager"),
             set_sw_table("history"),
+            set_sw_table("folder_shortcuts"),
             set_sw_table("last"),
         }
     }

reader.lua

@@ -190,6 +190,21 @@ if ARGV[argidx] and ARGV[argidx] ~= "" then
             UIManager:nextTick(function()
                 FileManagerHistory:onShowHist(last_file)
             end)
+        elseif start_with == "folder_shortcuts" then
+            local FileManagerShortcuts = require("apps/filemanager/filemanagershortcuts")
+            local fm_bookmark =  FileManagerShortcuts:new{
+                title = _("Folder shortcuts"),
+                show_parent = FileManager,
+                curr_path = home_dir,
+                goFolder = function(folder)
+                    if folder ~= nil and lfs.attributes(folder, "mode") == "directory" then
+                        FileManager.instance.file_chooser:changeToPath(folder)
+                    end
+                end,
+            }
+            UIManager:nextTick(function()
+                UIManager:show(fm_bookmark)
+            end)
         end
     end
     exit_code = UIManager:run()