[htoolkit-cvs] gio/src/Graphics/UI/GIO Menu.hs,1.10,1.11

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Update of /cvsroot/htoolkit/gio/src/Graphics/UI/GIO
In directory sc8-pr-cvs1:/tmp/cvs-serv25012/gio/src/Graphics/UI/GIO

Modified Files:
	Menu.hs 
Log Message:
Implementation for popup menus

Index: Menu.hs
===================================================================
RCS file: /cvsroot/htoolkit/gio/src/Graphics/UI/GIO/Menu.hs,v
retrieving revision 1.10
retrieving revision 1.11
diff -C2 -d -r1.10 -r1.11
*** Menu.hs	15 Aug 2003 21:24:54 -0000	1.10
--- Menu.hs	17 Aug 2003 16:45:07 -0000	1.11
***************
*** 13,27 ****
  module Graphics.UI.GIO.Menu
              ( -- * Menus
!               Menu, mainMenu, menu, menuAt, itemCount
                -- * Menu items
!               -- ** Menu item
!             , MenuItem, menuitem, menuitemAt
! 	      -- ** Checked menu items
!             , MenuCheck, menucheck, menucheckAt
                -- ** Radio items
              , MenuRadioItem, menuRadioItemAt, menuRadioItem
              , setMenuRadioGroup
                -- ** Menu separator
!             , MenuLine, menuline, menulineAt
              ) where

--- 13,28 ----
  module Graphics.UI.GIO.Menu
              ( -- * Menus
!               Menu, mainMenu, menuAt, menu, itemCount
!             , popupMenu, trackPopupMenu
                -- * Menu items
!               -- ** Command items
!             , MenuItem, menuitemAt, menuitem
! 	      -- ** Checked items
!             , MenuCheck, menucheckAt, menucheck
                -- ** Radio items
              , MenuRadioItem, menuRadioItemAt, menuRadioItem
              , setMenuRadioGroup
                -- ** Menu separator
!             , MenuLine, menulineAt, menuline
              ) where

***************
*** 42,51 ****
  hmenu (Menu h) = h

! -- | The main application menu
  mainMenu :: Menu
  mainMenu = Menu Lib.mainMenu

! -- | Insert a menu at specified position.
! menuAt :: Maybe Int -> [Prop Menu] -> Menu -> IO Menu
  menuAt pos props parent
    = do m     <- do hmenu <- Lib.insertMenu (hmenu parent) pos
--- 43,59 ----
  hmenu (Menu h) = h

! -- | The main application menu (the menu bar)
  mainMenu :: Menu
  mainMenu = Menu Lib.mainMenu

! -- | The 'menuAt' function creates and inserts an item with submenu in the parent menu. 
! -- The created submenu is initially empty. You can populate it with items by using the 
! -- 'menuitemAt', 'menucheckAt', 'menuRadioItemAt' or 'menulineAt' functions.
! -- Using the 'menuAt' you can create nested submenus.
! menuAt :: Maybe Int                               -- ^ The position where to place the submenu
!                                                   -- or Nothing if you want to append the item.
!        -> [Prop Menu]                             -- ^ The setup of the menu attributes
!        -> Menu                                    -- ^ The parent menu
!        -> IO Menu                                 -- ^ The created sub menu
  menuAt pos props parent
    = do m     <- do hmenu <- Lib.insertMenu (hmenu parent) pos
***************
*** 54,61 ****
         return m

! -- | Append a menu
  menu :: [Prop Menu] -> Menu -> IO Menu
  menu = menuAt Nothing

  instance Able Menu where
    enabled   = newAttr (Lib.getMenuItemEnabled . hmenu) (Lib.setMenuItemEnabled . hmenu)
--- 62,88 ----
         return m

! -- | The function is the same as the 'menuAt' function but always appends the item. The 'menu' function
! -- is semantically equal to @menuAt Nothing@
  menu :: [Prop Menu] -> Menu -> IO Menu
  menu = menuAt Nothing

+ -- | The 'popupMenu' function creates a popup menu. The menu is initially empty.
+ -- You can populate it with items by using the 'menuitemAt', 'menucheckAt', 
+ -- 'menuRadioItemAt' or 'menulineAt' functions. Using the 'menuAt' you can create nested submenus.
+ popupMenu :: [Prop Menu] -> IO Menu
+ popupMenu props
+   = do m     <- do hmenu <- Lib.createPopupMenu
+                    return (Menu hmenu)
+        set m props
+        return m
+ 
+ -- | The 'trackPopupMenu' function displays a popup menu at the specified location in the
+ -- window and tracks the selection of items on the menu.
+ trackPopupMenu :: Menu                      	  -- ^ The popup menu
+                -> Window                          -- ^ The window in which to popup the menu
+                -> Point                           -- ^ The location inside the window at which to display the menu
+                -> IO ()
+ trackPopupMenu menu window pos = Lib.trackPopupMenu (hmenu menu) (hwindow window) pos
+ 
  instance Able Menu where
    enabled   = newAttr (Lib.getMenuItemEnabled . hmenu) (Lib.setMenuItemEnabled . hmenu)
***************
*** 63,67 ****
  instance Titled Menu where
    title = newAttr (Lib.getMenuLabel . hmenu) (Lib.setMenuLabel . hmenu)
!   
  itemCount :: Attr Menu Int
  itemCount = readAttr "itemsCount" (Lib.getMenuItemCount . hmenu)
--- 90,96 ----
  instance Titled Menu where
    title = newAttr (Lib.getMenuLabel . hmenu) (Lib.setMenuLabel . hmenu)
! 
! -- | The 'itemCount' attribute is readonly and returns the number of items in the
! -- popup or sub menu.
  itemCount :: Attr Menu Int
  itemCount = readAttr "itemsCount" (Lib.getMenuItemCount . hmenu)
***************
*** 122,131 ****
  --------------------------------------------------------------------

! -- | Radio menu items are labeled entries in a menu.
  newtype MenuRadioItem = MenuRadioItem MenuHandle
  hradioitem (MenuRadioItem h) = h

! -- | Create a menu item and insert it at specified position.
! menuRadioItemAt :: Maybe Int -> [Prop MenuRadioItem] -> Menu -> IO MenuRadioItem
  menuRadioItemAt pos props menu
    = do mradioitem <- do hradioitem   <- Lib.insertMenuRadioItem (hmenu menu) pos
--- 151,167 ----
  --------------------------------------------------------------------

! -- | Radio menu items are labeled entries in a menu with bookmark.
! -- Sometimes, a group of menu items corresponds to a set of mutually exclusive options.
! -- In this case, you can indicate the selected option by using a selected radio menu item.
! -- To check a menu item use the 'checked' attribute.
  newtype MenuRadioItem = MenuRadioItem MenuHandle
  hradioitem (MenuRadioItem h) = h

! -- | Create a radio menu item and insert it at specified position.
! menuRadioItemAt :: Maybe Int                      -- ^ The position where to place the item
!                                                   -- or Nothing if you want to append it. 
!        -> [Prop MenuRadioItem]                    -- ^ The setup of the radio item attributes
!        -> Menu                                    -- ^ The parent menu
!        -> IO MenuRadioItem                        -- ^ The created radio item
  menuRadioItemAt pos props menu
    = do mradioitem <- do hradioitem   <- Lib.insertMenuRadioItem (hmenu menu) pos
***************
*** 134,138 ****
         return mradioitem

! -- | Create a menu item and appends it to parent menu.
  menuRadioItem :: [Prop MenuRadioItem] -> Menu -> IO MenuRadioItem
  menuRadioItem = menuRadioItemAt Nothing 
--- 170,175 ----
         return mradioitem

! -- | The function is the same as the 'menuRadioItemAt' function but always appends the item. The 'menuRadioItem' 
! -- function is semantically equal to @menuRadioItemAt Nothing@
  menuRadioItem :: [Prop MenuRadioItem] -> Menu -> IO MenuRadioItem
  menuRadioItem = menuRadioItemAt Nothing 
***************
*** 162,166 ****
  instance Accelerated MenuRadioItem where
    accel = newAttr (Lib.getMenuItemAccel . hradioitem) (Lib.setMenuItemAccel . hradioitem)
!   
  setMenuRadioGroup :: [MenuRadioItem] -> IO ()
  setMenuRadioGroup items = Lib.setMenuRadioGroup (map hradioitem items)
--- 199,204 ----
  instance Accelerated MenuRadioItem where
    accel = newAttr (Lib.getMenuItemAccel . hradioitem) (Lib.setMenuItemAccel . hradioitem)
! 
! -- | The 'setMenuRadioGroup' function specifies a set of mutually exclusive options.
  setMenuRadioGroup :: [MenuRadioItem] -> IO ()
  setMenuRadioGroup items = Lib.setMenuRadioGroup (map hradioitem items)
***************
*** 169,178 ****
  --  Checked menu items
  --------------------------------------------------------------------
! -- | Menu items are labeled entries in a menu.
  newtype MenuCheck = MenuCheck MenuHandle
  hcheck (MenuCheck h) = h

! -- | Create a menu item and insert it at specified position.
! menucheckAt :: Maybe Int -> [Prop MenuCheck] -> Menu -> IO MenuCheck
  menucheckAt pos props menu
    = do mcheck <- do mcheck <- Lib.insertMenuCheckItem (hmenu menu) pos
--- 207,222 ----
  --  Checked menu items
  --------------------------------------------------------------------
! -- | Checked menu items are labeled entries in a menu with check mark.
! -- Applications typically check or clear a menu item to indicate whether 
! -- an option is in effect.
  newtype MenuCheck = MenuCheck MenuHandle
  hcheck (MenuCheck h) = h

! -- | Create a check menu item and insert it at specified position.
! menucheckAt :: Maybe Int                      -- ^ The position where to place the item
!                                               -- or Nothing if you want to append it.
!             -> [Prop MenuCheck]               -- ^ The setup of the item attributes
!             -> Menu                           -- ^ The parent menu
!             -> IO MenuCheck                   -- ^ The created checked item
  menucheckAt pos props menu
    = do mcheck <- do mcheck <- Lib.insertMenuCheckItem (hmenu menu) pos
***************
*** 181,185 ****
         return mcheck

! -- | Create a checked menu item and appends it to parent menu.
  menucheck :: [Prop MenuCheck] -> Menu -> IO MenuCheck
  menucheck = menucheckAt Nothing 
--- 225,230 ----
         return mcheck

! -- | The function is the same as the 'menucheckAt' function but always appends the item. The 'menucheck'
! -- function is semantically equal to @menucheckAt Nothing@
  menucheck :: [Prop MenuCheck] -> Menu -> IO MenuCheck
  menucheck = menucheckAt Nothing 