Dockbar长按后执行的方法

点击或者长按+号图标：showEditDockShortcutDialog -> (1)showDialog(DIALOG_SELECT_SHORTAPP)  (2)showDialog(DIALOG_SELECT_SHORTCUT_NO_ICON)

(1) -> EditDockShortcut  -> (2)showPickIconDialog  (3)pickShortcut -> processShortcut 

(2) ->  default icon: restoreToDefaultIcon

           system icon: completeAddSystemIcon (3) -> completeAddSystemIcon(2)

           custom icon: completeAddCustomIcon

(3) -> application:  completeAddDockApplication  ->completeAddDockItem

           blank: restoreToBlank

           shortcut: completeAddDockShortcut -> completeAddDockItem

在空白出长按：

showAddDialog -> showDialog -> onPrepareDialog -> onCreateDialog -> CreateShortcut.createDialog 

onClick: ITEM_SHORTCUT:->pickShortcut(REQUEST_PICK_SHORTCUT) -> startActivityForResult(REQUEST_PCIK_SHORTCUT)  

              (1) -> processShortcut(REQUEST_PICK_APPLICATION) ->startActivityForResult(REQUEST_PICK_APPLICATION) -> completeAddApplication

              (2) -> processShortcut(REQUEST_CREATE_SHORTCUT) -> completeAddShortcut

              ITEM_APPWIDGET: -> startActivityForResult(REQUEST_PICK_APPWIDGET) -> addAppWidget -> startActivityForResult(REQUEST_CREATE_APPWIDGET) 

              ->onActivityResult(REQUEST_CREATE_WIDGET) -> completeAddAppWidget

              ITEM_LIVE_FOLDER：startActivityForResult(REQUEST_PICK_LIVE_FOLDER) -> addLiveFolder 

              (1) -> addFolder

              (2) -> startActivityForResult(REQUEST_CREATE_LIVE_FOLDER) -> completeAddLiveFolder

      ITEM_WALLPAPER: startWallpaper

              ITEM_ANYCUT: -> startActivityForResult(REQUEST_PICK_ANYCUT) -> completeAddShortcut