/** @brief Enter choice mode and relating initialisations. */
int ChoiceFirstAvail( ChewingData *pgdata )
{
/* save old cursor position */
pgdata->choiceInfo.oldChiSymbolCursor = pgdata->chiSymbolCursor;
/* see if there is some word in the cursor position */
if ( pgdata->chiSymbolBufLen == pgdata->chiSymbolCursor ) {
if ( pgdata->config.bPhraseChoiceRearward )
pgdata->chiSymbolCursor = pgdata->preferInterval[ pgdata->nPrefer - 1 ].from + CountSymbols( pgdata, pgdata->chiSymbolBufLen );
else
pgdata->chiSymbolCursor--;
}
pgdata->bSelect = 1;
SetAvailInfo(
&( pgdata->availInfo ),
pgdata->phoneSeq,
pgdata->nPhoneSeq,
PhoneSeqCursor( pgdata ),
pgdata->bSymbolArrBrkpt );
if ( ! pgdata->availInfo.nAvail )
return ChoiceEndChoice( pgdata );
pgdata->availInfo.currentAvail = pgdata->availInfo.nAvail - 1;
SetChoiceInfo(
&( pgdata->choiceInfo ),
&( pgdata->availInfo ),
pgdata->phoneSeq,
PhoneSeqCursor( pgdata ),
pgdata->config.candPerPage );
return 0;
}
/** @brief Enter choice mode and relating initialisations. */
int ChoiceInitAvail(ChewingData *pgdata)
{
int end, begin;
/* save old cursor position */
pgdata->choiceInfo.oldChiSymbolCursor = pgdata->chiSymbolCursor;
/* see if there is some word in the cursor position */
if (pgdata->chiSymbolBufLen == pgdata->chiSymbolCursor) {
pgdata->chiSymbolCursor--;
}
end = PhoneSeqCursor(pgdata);
if (pgdata->config.bPhraseChoiceRearward) {
pgdata->chiSymbolCursor = SeekPhraseHead(pgdata) + CountSymbols(pgdata, pgdata->chiSymbolCursor);
}
begin = PhoneSeqCursor(pgdata);
pgdata->bSelect = 1;
SetAvailInfo(pgdata, begin, end);
if (!pgdata->availInfo.nAvail)
return ChoiceEndChoice(pgdata);
pgdata->availInfo.currentAvail = pgdata->availInfo.nAvail - 1;
SetChoiceInfo(pgdata);
return 0;
}
/** @brief Return the next phrase not longer than the previous phrase. */
int ChoiceNextAvail( ChewingData *pgdata )
{
if (pgdata->choiceInfo.isSymbol) return 0;
if ( --( pgdata->availInfo.currentAvail ) < 0 )
pgdata->availInfo.currentAvail = pgdata->availInfo.nAvail - 1;
SetChoiceInfo( pgdata );
return 0;
}
int ChoicePrevAvail( ChewingContext *ctx )
{
ChewingData *pgdata = ctx->data;
if (pgdata->choiceInfo.isSymbol) return 0;
if ( ++( pgdata->availInfo.currentAvail ) >= pgdata->availInfo.nAvail )
pgdata->availInfo.currentAvail = 0;
SetChoiceInfo( pgdata );
return 0;
}
/** @brief Return the next phrase not longer than the previous phrase. */
int ChoiceNextAvail( ChewingData *pgdata )
{
if (pgdata->choiceInfo.isSymbol) return 0;
if ( --( pgdata->availInfo.currentAvail ) < 0 )
pgdata->availInfo.currentAvail = pgdata->availInfo.nAvail - 1;
SetChoiceInfo(
&( pgdata->choiceInfo ),
&( pgdata->availInfo ),
pgdata->phoneSeq,
PhoneSeqCursor( pgdata ),
pgdata->config.candPerPage );
return 0;
}
int ChoiceLastAvail(ChewingData *pgdata)
{
assert(pgdata);
assert(pgdata->bSelect);
if (pgdata->choiceInfo.isSymbol != WORD_CHOICE)
return 0;
ChangeCurrentAvailInfo(pgdata, 0);
SetChoiceInfo(pgdata);
return 0;
}
int ChoiceNextAvail(ChewingData *pgdata)
{
assert(pgdata);
assert(pgdata->bSelect);
if (!ChoiceHasNextAvail(pgdata)) {
return -1;
}
ChangeCurrentAvailInfo(pgdata, pgdata->availInfo.currentAvail - 1);
SetChoiceInfo(pgdata);
return 0;
}