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-rw-r--r-- | src/programchain.h | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/src/programchain.h b/src/programchain.h deleted file mode 100644 index 47797a2..0000000 --- a/src/programchain.h +++ /dev/null | |||
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1 | /* | ||
2 | * Copyright (C) 2007-2011 Xagasoft, All rights reserved. | ||
3 | * | ||
4 | * This file is part of the libbu++ library and is released under the | ||
5 | * terms of the license contained in the file LICENSE. | ||
6 | */ | ||
7 | |||
8 | #ifndef BU_PROGRAMCHAIN_H | ||
9 | #define BU_PROGRAMCHAIN_H | ||
10 | |||
11 | #include "bu/list.h" | ||
12 | #include "bu/linkmessage.h" | ||
13 | |||
14 | namespace Bu | ||
15 | { | ||
16 | class ProgramLink; | ||
17 | /** | ||
18 | * The Program Chain links together program "chunks" to more easily facilitate | ||
19 | * a generalized program loop with modular extensions. | ||
20 | */ | ||
21 | class ProgramChain | ||
22 | { | ||
23 | public: | ||
24 | /** | ||
25 | * Construct an empty chain. | ||
26 | */ | ||
27 | ProgramChain(); | ||
28 | |||
29 | /** | ||
30 | * Destroy your chain. | ||
31 | */ | ||
32 | virtual ~ProgramChain(); | ||
33 | |||
34 | /** | ||
35 | * Adds a link to the end of the chain. | ||
36 | *@param pLink A pointer to the link to add to the chain. | ||
37 | *@returns True if adding the link was successful, otherwise false | ||
38 | */ | ||
39 | bool addLink( Bu::ProgramLink *pLink ); | ||
40 | |||
41 | /** | ||
42 | * Gets a link by name. | ||
43 | *@param lpName The name of the link you're looking for. Every link has a | ||
44 | * name, apparently. | ||
45 | *@returns A pointer to the specified ProgramLink, or NULL if none were | ||
46 | * found matching your criteria. | ||
47 | */ | ||
48 | class ProgramLink *getLink( const char *lpName ); | ||
49 | |||
50 | /** | ||
51 | * Gets the very first link in the chain. | ||
52 | *@returns A pointer to the first link in the chain. | ||
53 | */ | ||
54 | class ProgramLink *getBaseLink(); | ||
55 | |||
56 | /** | ||
57 | * Runs through the chain once. Useful if you want to have more control | ||
58 | * over the operation of the chain. | ||
59 | *@returns true if every link returned true. If at least one link returns | ||
60 | * false, then returns false. | ||
61 | */ | ||
62 | bool execChainOnce(); | ||
63 | |||
64 | /** | ||
65 | * Enters the master chain loop, looping over the entire chain and | ||
66 | * executing every link's TimeSlice routine in order, over and over, until | ||
67 | * a link returns a false value. | ||
68 | *@returns False, always. It returns true unless a link returned false, | ||
69 | * but loops until a link does return false. | ||
70 | **/ | ||
71 | bool enterChainLoop(); | ||
72 | |||
73 | /** | ||
74 | * Broadcasts an Immediate Response Message to all active links, save the | ||
75 | * sender. Whatever link first responds with a non-null response message | ||
76 | * will have it's messages sent back to the broadcasting link as the returns | ||
77 | * of this function call. Therefore it is very important that all message | ||
78 | * processing code is handled in a fairly timely fasion. | ||
79 | *@param pMsgOut The message to broadcast in hopes of a response. | ||
80 | *@param pSender The message that sent out the message and doesn't want to | ||
81 | * receive it's own message. This should always just be "this". | ||
82 | *@returns The message that was returned by the first link to return a | ||
83 | * non-null response. If all messages return null responses then this also | ||
84 | * returns null. Please note that whoever calls this will be responsible | ||
85 | * for deleting the message returned by it, if non-null. | ||
86 | */ | ||
87 | class LinkMessage *broadcastIRM( LinkMessage *pMsgOut, ProgramLink *pSender ); | ||
88 | |||
89 | private: | ||
90 | /** | ||
91 | * Shuts down all operation no matter what point in the operation we were. | ||
92 | */ | ||
93 | void emergencyShutdown(); | ||
94 | Bu::List<Bu::ProgramLink *> lLink; /**< The linked list that contains all of the links. */ | ||
95 | }; | ||
96 | } | ||
97 | |||
98 | |||
99 | #endif | ||