Abiword中自定义字段对象流程分析
1、定义对象的id，ap_String_Id.h
dcl(FIELD_Type_Custom, "Custom") //字段所属分类
dcl(FIELD_Custom_FieldCustom, "FieldCustom") // 字段
2、继承fp_FieldRun类，实现自定义字段
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. 定义_FIELD、_FIELDTYPE宏
6.2.根据fp_Fields.h定义fp_FieldTypesEnum、fp_FieldsEnum枚举
6.3.根据fp_Fields.h定义fp_FieldTypeData、fp_FieldData结构数组
5、添加_FieldType枚举数
FD_Custom
6、fl_BlockLayout::_doInsertFieldRun，实例化自定义字段
if(strcmp(pszType, "CustomField") == 0)
{
pNewRun = new fp_FieldCustomRun(this, blockOffset, 1);
}
7、pf_Frag_Object::pf_Frag_Object设置自定的类型
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、在删除Field时，在fp_Line::removeRun函数中做如下修改
if(pRun->getType() == FPRUN_FIELD)
{
getBlock()->getView()->setActiveFieldRun(NULL);
}
