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- TABLE OF CONTENTS
-
- Popasl.mui/Popasl.mui
- Popasl.mui/MUIA_Popasl_Active
- Popasl.mui/MUIA_Popasl_StartHook
- Popasl.mui/MUIA_Popasl_StopHook
- Popasl.mui/MUIA_Popasl_Type
- Popasl.mui/Popasl.mui
-
- As a subclass of popstring class, popasl can be used to pop up
- any kinds of standard system asl requesters. A seperate task is
- spawned to handle these requesters, the application continues to
- run.
-
- Using an asl popup class, you don't need to worry about handling
- asl requesters. MUI will automatically open one when the popup
- button is pressed and update the corresponding string gadget
- when the user terminates the requester. From the programmers
- point of view, all you have to do is to handle the string
- gadgets contents.
-
- IMPORTANT: At object creation time, you can use all ASL library
- tags as well. They will be passed to the AllocAslRequest() call
- without further interpretation.
- Popasl.mui/MUIA_Popasl_Active
-
- NAME
- MUIA_Popasl_Active -- (V7) [..G], BOOL
-
- FUNCTION
- Popasl creates asynchronous popups. Requesters are opened in a
- seperately spawned task and don't disturb the rest of the
- application. You can ask for the state of a requester by
- querying the MUIA_Popasl_Active attribute. It will return
- TRUE when the requester is currently open, FALSE otherwise.
-
- Common use for this attribute is to prevent an application
- from being terminated while a requester is open. If you
- try to dispose the popasl object with a currently open
- requester, MUI will freeze your task as long as the requester
- stays there.
-
- EXAMPLE
- case MUIV_Application_ReturnID_Quit:
- {
- LONG active;
-
- get(pop1,MUIA_Popasl_Active,&active);
- if (!active) get(pop2,MUIA_Popasl_Active,&active);
- if (!active) get(pop3,MUIA_Popasl_Active,&active);
- if (!active) get(pop4,MUIA_Popasl_Active,&active);
-
- if (active)
- MUI_Request(app,window,0,NULL,"OK",
- "Cannot quit now, still some asl popups opened.");
- else
- running = FALSE;
- }
- break;
-
- SEE ALSO
- MUIA_Popasl_StartHook, MUIA_Popasl_StopHook, MUIA_Popasl_Type
- Popasl.mui/MUIA_Popasl_StartHook
-
- NAME
- MUIA_Popasl_StartHook -- (V7) [ISG], struct Hook *
-
- FUNCTION
- Before popasl class opens the asl requester, it has to
- get some kind of parameters describing its initial contents.
- A file popup would e.g. need to split the string gadgets
- contents into path and file name part and pass these
- as ASLFR_InititalFile and ASLFR_InitialDrawer to the
- requester.
-
- The MUIA_Popasl_StartHook tag describes a hook function
- that will be called immediately before the requester is
- opened. It will receive a pointer to itself in A0,
- a pointer to the popasl object in A2 and a pointer to
- a taglist in A1. This taglist already contains some
- tags:
-
- ASLFR/FO/..._Screen : parent screen
- ASLFR/FO/..._PrivateIDCMP : TRUE
- ASLFR/FO/..._InititalLeftEdge: left edge of popasl object
- ASLFR/FO/..._InititalTopEdge : bottom edge of popasl object
- ASLFR/FO/..._InititalWidth : width of popasl object, only
- present when the popup is called
- for the first time.
-
- You may add other tags to the list, but beware that the
- maximum allowed number of tags is 15. If you need more,
- use the TAG_MORE tag.
-
- Since the asl requester will run in a seperate task, you should
- not change the state of the ASLFR_PrivateIDCMP tag!
-
- If your hook returns TRUE, popasl class opens the requester
- with the given taglist. A return value of FALSE should be
- used when something went wrong, no requester will be opened
- in this case.
-
- For file and font requester, popasl class will fall back to a
- default tag handling when no start hook is specified. A file
- name is automatically split into path and file part and passed
- to the requester a ASLFR_InitialFile and ASLFR_InitialDrawer.
- A font requester splits a string like "topaz/8" into
- font name and size for ASLFO_InitialName and ASLFO_InitialSize.
-
- SEE ALSO
- MUIA_Popasl_StopHook, MUIA_Popasl_Type
- Popasl.mui/MUIA_Popasl_StopHook
-
- NAME
- MUIA_Popasl_StopHook -- (V7) [ISG], struct Hook *
-
- FUNCTION
- When the requester terminates, MUIA_Popasl_StopHook will be
- called with a pointer to itself in A0, a pointer to the
- popasl object in A2 and a pointer to the asl requester
- structure in A1. The hook can then parse the requester
- structure and set the string gadgets contents respectively.
-
- For file and font requesters, a default handling is provided.
-
- SEE ALSO
- MUIA_Popasl_StartHook, MUIA_Popasl_Type
- Popasl.mui/MUIA_Popasl_Type
-
- NAME
- MUIA_Popasl_Type -- (V7) [I.G], ULONG
-
- FUNCTION
- This tag allows to set the type of asl requester. Pass
- the same value you would use for AllocAslRequest(), e.g.
- ASL_FileRequest, ASL_FontRequest or ASL_ScreenModeRequest.
-
- For ASL_FileRequest and ASL_FontRequest, popasl class offers a
- a standard start/stop handling. When a file requester is opened,
- MUI splits the string gadgets contents into a path and a file
- name and uses these as initial paremeters for the requester.
- Font popups translate a font into a name/size pair, e.g.
- "topaz/8". You can override these translations by specifying
- a MUIA_Popasl_StartHook and a MUIA_Popasl_StopHook.
-
- For ASL_ScreenModeRequest, no standard handling is available.
- Using such a popup without Start and Stop hooks won't make
- much sense.
-
- SEE ALSO
- MUIA_Popasl_StartHook, MUIA_Popasl_StopHook
-