internal void ToggleHide(FieldLine field)
{
this.DisableUpdate();
try
{
bool bNewValue = !field.Visible;
field.Visible = bNewValue;
int nStart = this.Items.IndexOf(field);
if (nStart == -1)
return;
if (field.ExpandState != ExpandState.Collapsed)
{
// 将下属子字段显示或者隐藏
for (int i = nStart + 1; i < this.Items.Count; i++)
{
EasyLine current = this.Items[i];
if (current is FieldLine)
break;
if (current.Visible != bNewValue)
current.Visible = bNewValue;
}
}
}
finally
{
this.EnableUpdate();
}
}
// 插入一个新的字段
public FieldLine NewField(int index)
{
EasyLine ref_line = null;
if (index < this.Items.Count)
ref_line = this.Items[index];
if (ref_line is SubfieldLine)
{
ref_line = GetFieldLine(ref_line as SubfieldLine);
if (ref_line == null)
{
throw new Exception("index 为 " + index.ToString() + " 的子字段行没有找到字段行");
}
index = this.Items.IndexOf(ref_line);
Debug.Assert(index != -1, "");
}
// 询问字段名
NewSubfieldDialog dlg = new NewSubfieldDialog();
GuiUtil.SetControlFont(dlg, this.Font);
// dlg.Font = this.Font;
dlg.Text = "新字段";
dlg.AutoComplete = true;
if (ref_line != null)
dlg.NameString = ref_line.Name;
else
dlg.NameString = this.DefaultFieldName;
dlg.MarcDefDom = this.MarcDefDom;
dlg.Lang = this.Lang;
dlg.StartPosition = FormStartPosition.CenterScreen;
dlg.ShowDialog(this);
if (dlg.DialogResult != DialogResult.OK)
return null;
bool bControlField = Record.IsControlFieldName(dlg.NameString);
string strDefaultValue = "";
string strIndicator = " ";
if (bControlField == false)
strDefaultValue = new string((char)31, 1) + "a";
List<string> results = null;
string strError = "";
// 获得宏值
// parameters:
// strSubFieldName 子字段名。特殊地，如果为"#indicator"，表示想获取该字段的指示符缺省值
// return:
// -1 error
// 0 not found
// 1 found
int nRet = GetDefaultValue(
0, // index,
dlg.NameString,
"",
out results,
out strError);
if (nRet == -1)
MessageBox.Show(this, strError);
if (results != null
&& results.Count > 0)
{
strDefaultValue = results[0];
if (bControlField == false)
SplitDefaultValue(strDefaultValue,
out strIndicator,
out strDefaultValue);
}
bool bChanged = false;
// 辅助剖析子字段的对象
MarcField field_node = new MarcField(dlg.NameString, strIndicator, strDefaultValue);
FieldLine field_line = new FieldLine(this);
field_line.IsControlField = bControlField;
field_line.Name = dlg.NameString;
field_line.Caption = GetCaption(dlg.NameString, "", this._includeNumber);
if (bControlField == false)
{
field_line.Indicator = strIndicator; // 从 marcdef 中获得缺省的指示符值
field_line.ExpandState = ExpandState.Expanded;
}
EasyLine after_line = null;
#if FIX
bool bExpanded = false;
bool bHideChanged = false;
#endif
if (dlg.InsertBefore == true)
{
after_line = ref_line;
}
else
{
// 如果插入点是字段行，需要跳过下属的子字段行
// EasyLine ref_line = this.Items[index];
if (ref_line is FieldLine)
{
List<EasyLine> lines = GetSubfieldLines(ref_line as FieldLine);
index += lines.Count + 1;
}
else
index++;
if (index < this.Items.Count)
after_line = this.Items[index];
}
#if FIX
if (after_line != null)
{
// 如果插入位置后面一个字段是隐藏状态，则会出现故障，需要先修改为显示状态，插入后再隐藏
if (after_line is FieldLine && after_line.Visible == false)
{
this.ToggleHide(after_line as FieldLine);
bHideChanged = true;
}
// 如果本字段是收缩状态，则会出现故障，需要先修改为展开状态，插入后再收缩
if (after_line.ExpandState == ExpandState.Collapsed)
{
this.ToggleExpand(after_line);
Debug.Assert(after_line.ExpandState == ExpandState.Expanded, "");
bExpanded = true;
}
}
#endif
InsertNewLine(index++,
field_line,
false);
bChanged = true;
// 如果必要，创建子字段对象
foreach (MarcSubfield subfield_node in field_node.ChildNodes)
{
SubfieldLine subfield_line = new SubfieldLine(this);
subfield_line.Name = subfield_node.Name;
subfield_line.Caption = GetCaption(field_node.Name, subfield_node.Name, this._includeNumber);
subfield_line.Content = subfield_node.Content;
InsertNewLine(index++,
subfield_line,
false);
bChanged = true;
}
#if FIX
// 把参考行恢复到以前的状态
if (after_line != null && bExpanded == true)
{
this.ToggleExpand(after_line);
Debug.Assert(after_line.ExpandState == ExpandState.Collapsed, "");
}
if (after_line != null && bHideChanged == true)
{
this.ToggleHide(after_line as FieldLine);
}
#endif
if (bChanged == true)
this.FireTextChanged();
return field_line;
}
// 获得一个字段行下属的全部子字段行
List<EasyLine> GetSubfieldLines(FieldLine field)
{
List<EasyLine> results = new List<EasyLine>();
int nStart = this.Items.IndexOf(field);
if (nStart == -1)
return results;
for (int i = nStart + 1; i < this.Items.Count; i++)
{
EasyLine line = this.Items[i];
if (line is FieldLine)
break;
results.Add(line);
}
return results;
}
// 设置 MARC 记录内容
public void SetMarc(string strMarc)
{
this.Clear();
this.MarcDefDom = null; // 迫使重新获得字段名提示信息
this.DisableUpdate();
try
{
int nLineIndex = 0;
MarcRecord record = new MarcRecord(strMarc);
this._header = record.Header.ToString(); // 头标区
foreach (MarcField field in record.ChildNodes)
{
FieldLine field_line = new FieldLine(this);
field_line.Name = field.Name;
field_line.Caption = GetCaption(field.Name, "", this._includeNumber);
// field_line.Indicator = field.Indicator;
InsertNewLine(nLineIndex++,
field_line,
false);
field_line.IsControlField = field.IsControlField;
if (field.IsControlField == true)
{
field_line.Content = field.Content;
field_line.ExpandState = ExpandState.None;
}
else
{
#if NO
// 指示符行
IndicatorLine indicator_line = new IndicatorLine(this);
indicator_line.Name = "";
indicator_line.Caption = "指示符";
indicator_line.Content = field.Indicator;
InsertNewLine(nLineIndex++,
indicator_line);
#endif
field_line.Indicator = field.Indicator;
foreach (MarcSubfield subfield in field.ChildNodes)
{
SubfieldLine subfield_line = new SubfieldLine(this);
subfield_line.Name = subfield.Name;
subfield_line.Caption = GetCaption(field.Name, subfield.Name, this._includeNumber);
subfield_line.Content = subfield.Content;
InsertNewLine(nLineIndex++,
subfield_line,
false);
}
field_line.ExpandState = ExpandState.Expanded;
}
}
this.Changed = false;
ResetLineState();
}
finally
{
this.EnableUpdate();
}
}