Abiword中自定義字段對象流程分析

1、定義對象的id，ap_String_Id.h

dcl(FIELD_Type_Custom, "Custom") //字段所屬分類
dcl(FIELD_Custom_FieldCustom, "FieldCustom") // 字段

2、繼承fp_FieldRun類，實(shí)現(xiàn)自定義字段

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3、fp_Fields.h

_FIELDTYPE(CUSTOM, AP_STRING_ID_FIELD_Type_Custom)
_FIELD(CUSTOM, AP_STRING_ID_FIELD_Custom_FieldCustom, CustomField)

4、fp_Run.h

???? 6.1. 定義_FIELD、_FIELDTYPE宏

???? 6.2.根據(jù)fp_Fields.h定義fp_FieldTypesEnum、fp_FieldsEnum枚舉

???? 6.3.根據(jù)fp_Fields.h定義fp_FieldTypeData、fp_FieldData結(jié)構(gòu)數(shù)組

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5、添加_FieldType枚舉數(shù)

???? FD_Custom

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6、fl_BlockLayout::_doInsertFieldRun，實(shí)例化自定義字段

if(strcmp(pszType, "CustomField") == 0)
?{
??pNewRun = new fp_FieldCustomRun(this,?? blockOffset, 1);
?}

7、pf_Frag_Object::pf_Frag_Object設(shè)置自定的類型

??? if (0 == strcmp(pszType, "CustomField"))
????{
???????? fieldType = fd_Field::FD_Custom;
????}
????else
????{
????????? UT_ASSERT_HARMLESS(UT_SHOULD_NOT_HAPPEN);
??????????//Better than segfaulting I figure
??????????fieldType = fd_Field::FD_None;
?????}

8、在刪除Field時(shí)，在fp_Line::removeRun函數(shù)中做如下修改

if(pRun->getType() == FPRUN_FIELD)
?{
??getBlock()->getView()->setActiveFieldRun(NULL);
?}

????

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Abiword中自定義字段對象流程分析