58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
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#ifndef _TEXTFEED_H
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#define _TEXTFEED_H
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#include <bfc/common.h>
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#include <map>
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#include <string>
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#include <utility>
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#include <bfc/depend.h>
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#include <api/service/svcs/svc_textfeed.h>
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#include <api/syscb/callbacks/corecbi.h>
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/**
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This is the standard helper class for implementing a textfeed.
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Be sure to check out class EzFeed in ezfeed.h, which combines this
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class with a service factory.
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*/
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class TextFeed : public svc_textFeedI, public DependentI
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{
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public:
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/**
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Call this to register your feeds by id. Make the ids unique!
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@see sendFeed()
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@ret TRUE if succeeded, FALSE on error (i.e. nonunique id)
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*/
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int registerFeed(const wchar_t *feedid, const wchar_t *initial_text=L"", const wchar_t *description=L"");
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/**
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Call this to send text into a feed.
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@see registerFeed()
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@ret TRUE if succeeded, FALSE on error (i.e. feedid not registered)
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*/
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int sendFeed(const wchar_t *feedid, const wchar_t *text);
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// Gives the most recently sent text on a feed.
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virtual const wchar_t *getFeedText(const wchar_t *feedid);
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// Gives a description for the feed (used by accessibility).
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virtual const wchar_t *getFeedDescription(const wchar_t *feedid);
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protected:
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virtual api_dependent *getDependencyPtr() { return this; }
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virtual void dependent_onRegViewer(api_dependentviewer *viewer, int add);
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virtual void *dependent_getInterface(const GUID *classguid);
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/**
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Called when someone subscribes to this feed.
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*/
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virtual void onRegClient() { }
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virtual void onDeregClient() { }
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virtual int hasFeed(const wchar_t *name);
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private:
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std::map<std::wstring, std::pair<std::wstring, std::wstring> > feeds;
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};
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#endif
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