public void SetStyle(ElementInitialStyle style)
{
// 本对象旧的状态
ExpandStyle oldChildExpand = this.m_childrenExpand;
ExpandStyle oldAttrsExpand = this.m_attrsExpand;
// 参数传进的新状态
ElementInitialStyle elementStyle = style;
ExpandStyle newAttrsExpand = elementStyle.attrsExpandStyle;
ExpandStyle newChildExpand = elementStyle.childrenExpandStyle;
// 先设成不用改变状态
this.m_bWantAttrsInitial = 0;
this.m_bWantChildInitial = 0;
// 设属性是否需要改变状态
if (elementStyle.bReinitial == false) // 首次初始化
{
this.m_bWantAttrsInitial = 1;
}
else
{
if (newAttrsExpand != oldAttrsExpand)
this.m_bWantAttrsInitial = 1;
else
this.m_bWantAttrsInitial = 0;
}
// 设儿子状态
if (elementStyle.bReinitial == false) // 首次初始化
{
this.m_bWantChildInitial = 1;
}
else
{
if (newChildExpand != oldChildExpand)
this.m_bWantChildInitial = 1;
else
this.m_bWantChildInitial = 0;
}
}
// 根据xml编辑框中的内容创建后代
void BuildDescendant()
{
// 采用加虚根的方法
//this.SetFreshValue();
Debug.Assert(this.m_childrenExpand == ExpandStyle.Collapse, "不是闭合状态不要用本函数");
string strAdditionalNsString = "";
string strInnerXml = "";
// 2.得到attributes关闭时的text
XmlText oText = this.GetContentText();
if (oText != null)
{
strInnerXml = oText.Text.Trim();
}
else
{
Debug.Assert(false, "必须有text对象");
}
NamespaceItemCollection nsColl = NamespaceItemCollection.GatherOuterNamespaces(
(ElementItem)this);
if (nsColl.Count > 0)
{
strAdditionalNsString = nsColl.MakeAttrString();
}
string strXml = "";
if (this == this.m_document.VirtualRoot)
{
strXml = strInnerXml;
}
else
{
strXml = "<root "+ strAdditionalNsString + " >\r\n" + strInnerXml + "</root>";
}
this.ClearChildren();
this.children = new ItemList();
XmlDocument dom = new XmlDocument();
dom.LoadXml(strXml);
XmlNode root = null;
if (this == this.m_document.VirtualRoot)
{
root = dom;
}
else
{
root = dom.DocumentElement;
}
foreach(XmlNode node in root.ChildNodes)
{
Item item = this.m_document.allocator.newItem(node,
this.m_document);
ElementInitialStyle style = new ElementInitialStyle();
style.attrsExpandStyle = ExpandStyle.Expand;
style.childrenExpandStyle = ExpandStyle.Expand;
style.bReinitial = false;
item.Initial(node,
this.m_document.allocator,
style,
true);
// 这个函数是为Flush服务的函数，所以不应再使用时间戳加大
this.AppendChildInternal(item,false,true);
}
}
// expandAttrs 属性状态
// expandChildren 儿子状态
public void ExpandAttrsOrChildren(ExpandStyle expandAttrs,
ExpandStyle expandChildren,
bool bChangeDisplay)
{
bool bOldChanged = this.m_document.m_bChanged;
//设光标为等待状态
Cursor cursorSave = this.m_document.Cursor;
if (bChangeDisplay == true)
{
this.m_document.Cursor = Cursors.WaitCursor;
}
ElementInitialStyle style = new ElementInitialStyle();
style.childrenExpandStyle = expandChildren;
style.attrsExpandStyle = expandAttrs;
style.bReinitial = true;
string strXml = "";
if (this == this.m_document.VirtualRoot)
{
strXml = this.GetOuterXml(null);
}
else
{
strXml = this.GetOuterXmlSpecial();
}
XmlDocument dom = new XmlDocument ();
try
{
dom.LoadXml(strXml);
}
catch(Exception ex)
{
throw(new Exception("ExpandChild()内部错误：" + ex.Message));
}
if (this == this.m_document.VirtualRoot)
{
// 初始化item层次，注意使用根下的第一个元素
this.Initial(dom,
this.m_document.allocator,
style,
true);
}
else
{
Debug.Assert(dom.DocumentElement.ChildNodes.Count == 1, "特殊的xml字符串doc根必须有且只有一个儿子");
// 初始化item层次，注意使用根下的第一个元素
this.Initial(dom.DocumentElement.ChildNodes[0],
this.m_document.allocator,
style,
true);
}
// 重新初始化Visual层次
this.InitialVisual();
// 5.item重新layout,这里还用原来的rect,意思是item尺寸不变，主要修改里面的尺寸
int nRetWidth,nRetHeight;
this.Layout (this.Rect.X,
this.Rect.Y,
this.Rect.Width,
0,
this.m_document.nTimeStampSeed,
out nRetWidth,
out nRetHeight,
LayoutMember.Layout);
this.Layout(this.Rect.X,
this.Rect.Y,
this.Rect.Width,
this.Rect.Height,
this.m_document.nTimeStampSeed ++,
out nRetWidth,
out nRetHeight,
LayoutMember.EnLargeHeight | LayoutMember.Up );
this.m_document.nTimeStampSeed++;
/*
if (this.SelectedItem != null)
{
// 如果CurItem1是element的属性之一
if (this.SelectedItem is AttrItem
&& this.SelectedItem.parent == element)
{
if (expandAttrs == ExpandStyle.Collapse)
{
this.SelectedItem = element;
}
}
else
{
if (ItemUtil.IsBelong(this.SelectedItem,
element))
{
this.SelectedItem = element;
}
}
}
*/
if (bChangeDisplay == true)
{
//layout后，文档尺寸发生变化，所以调此函数
this.m_document.AfterDocumentChanged(ScrollBarMember.Both);
// 这儿为什么要这样做呢，我也不太清楚
this.m_document.DocumentOrgX = this.m_document.DocumentOrgX;
this.m_document.DocumentOrgY = this.m_document.DocumentOrgY;
//改回原来光标的状态
this.m_document.Cursor = cursorSave;
this.m_document.m_bChanged = bOldChanged;
this.m_document.Invalidate();
}
//this.SelectedItem = element;
this.m_childrenExpand = expandChildren;
this.m_attrsExpand = expandAttrs;
this.Flush();
}
// 用node初始化本对象和下级
// return:
// -1 出错
// -2 中途cancel
// 0 成功
public override int Initial(XmlNode node,
ItemAllocator allocator,
object style,
bool bConnect)
{
// this.m_bConnected = true;
this.m_bConnected = bConnect; // new change
if (!(style is ElementInitialStyle))
{
Debug.Assert(false,"style必须为ElementInitialStyle类型");
return -1;
}
if ((node.NodeType != XmlNodeType.Element)
&& node.NodeType != XmlNodeType.Document)
{
Debug.Assert(false, "'" + node.NodeType.ToString() + "'不是合适的节点类型");
return 0;
}
// 设状态
this.SetStyle((ElementInitialStyle)style);
// 参数传进的新状态
ElementInitialStyle elementStyle = (ElementInitialStyle)style;
ExpandStyle newAttrsExpand = elementStyle.attrsExpandStyle;
ExpandStyle newChildExpand = elementStyle.childrenExpandStyle;
// 初始化数据，从node中获取
this.InitialData(node);
// 处理属性
if (this.m_bWantAttrsInitial == 1)
{
if (node.Attributes == null
|| node.Attributes.Count == 0)
{
this.m_attrsExpand = ExpandStyle.None;
goto SKIPATTRS;
}
// 本次希望属性展开
if (newAttrsExpand == ExpandStyle.Expand)
{
this.ClearAttrs();
foreach(XmlNode attrXmlNode in node.Attributes )
{
AttrItem attr = null;
attr = (AttrItem)allocator.newItem(attrXmlNode,
this.m_document);
if (attr != null)
{
int nRet = attr.Initial(attrXmlNode,
allocator,
null,
true);
if (nRet == -1)
return -1;
this.AppendAttrInternal(attr,false,true);
}
attr.m_bConnected = true;
}
this.m_objAttrsTimestamp ++ ;
this.m_attrsExpand = ExpandStyle.Expand;
}
else if (newAttrsExpand == ExpandStyle.Collapse)
{
// 注,收缩时不要把属性毁掉
// 本次希望属性收缩
this.m_attrsExpand = ExpandStyle.Collapse;
}
else
{
this.m_attrsExpand = ExpandStyle.None;
}
}
SKIPATTRS:
// 处理下级
if (this.m_bWantChildInitial == 1)
{
if (node.ChildNodes.Count == 0) //没有null的情况
{
this.m_childrenExpand = ExpandStyle.None;
goto SKIPCHILDREN;
}
// 希望下级展开
if (newChildExpand == ExpandStyle.Expand)
{
if (elementStyle.bReinitial == false
|| this.m_xmlChildrenTimestamp > this.m_objChildrenTimestmap)
{
this.ClearChildren();
// 处理下级
foreach(XmlNode child in node.ChildNodes)
{
Item item;
item = allocator.newItem(child,
this.m_document);
if (item == null)
continue;
ElementInitialStyle childStyle =
new ElementInitialStyle();
childStyle.attrsExpandStyle = ExpandStyle.Expand;
childStyle.childrenExpandStyle = ExpandStyle.Expand;
childStyle.bReinitial = false;
int nRet = item.Initial(child,
allocator,
childStyle,
bConnect); // 继承外面传入的参数
if (nRet == -2)
return -2;
if (nRet <= -1)
{
return nRet;
}
// 这里不在AppendChildInternal里做flush的原因是
// Initial()阶段表示只修改的一次，不是每个元素修改父亲一次
this.AppendChildInternal(item,false,true);
//item.m_bConnected = true;
}
this.m_objChildrenTimestmap ++;
}
this.m_childrenExpand = ExpandStyle.Expand;
}
else if (newChildExpand == ExpandStyle.Collapse)
{
this.m_childrenExpand = ExpandStyle.Collapse;
}
else
{
this.m_childrenExpand = ExpandStyle.None;
}
}
SKIPCHILDREN:
/*
// end
ItemCreatedEventArgs args = new ItemCreatedEventArgs();
args.item = this;
args.bInitial = true;
this.m_document.fireItemCreated(this,args);
*/
return 0;
}
// 专为供Xml属性设得私有函数
private void SetXml(string strXml)
{
strXml = strXml.Trim();
if (strXml == "")
{
if (this.VirtualRoot != null)
{
this.VirtualRoot.FireTreeRemoveEvents(this.VirtualRoot.GetXPath());
}
this.VirtualRoot = null;
this.docRoot = null;
this.SetCurText(null,null);
this.SetActiveItem(null);
AfterDocumentChanged(ScrollBarMember.Both);
this.Invalidate();
// 文档发生变化
this.FireTextChanged();
return;
}
if (this.VirtualRoot == null)
{
this.VirtualRoot = new VirtualRootItem(this);
this.VirtualRoot.LayoutStyle = this.m_layoutStyle ;
this.VirtualRoot.m_bConnected = true;
}
else
{
this.VirtualRoot.ClearAttrs();
this.VirtualRoot.ClearChildren();
}
XmlDocument dom = new XmlDocument();
dom.PreserveWhitespace = true;
dom.LoadXml(strXml);
ElementInitialStyle style = new ElementInitialStyle();
style.attrsExpandStyle = ExpandStyle.Expand;
style.childrenExpandStyle = ExpandStyle.Expand;
style.bReinitial = false;
this.VirtualRoot.Initial(dom,//dom.DocumentElement,
allocator,
style,
true);
this.docRoot = this.GetDocRoot();
this.VirtualRoot.InitialVisual();
int nWidth = 0;
int nHeight = 0;
this.VirtualRoot.Layout(0,
0,
this.ClientSize .Width -1,
0 ,
nTimeStampSeed++,
out nWidth,
out nHeight,
LayoutMember.Layout );
this.SetCurText(this.VirtualRoot,null);
this.SetActiveItem(this.VirtualRoot);
if (this.m_bFocused == true)
this.curEdit.Focus();
AfterDocumentChanged(ScrollBarMember.Both);
this.Invalidate();
// 文档发生变化
this.FireTextChanged();
}
// 用XML文本替代当前节点以及全部下级
// parameter:
// strInputText 输入的即将用来粘贴的文本
// startItem 起始item
public int PasteOverwrite(string strInputText,
Item startItem,
bool bSetFocus,
out string strError)
{
strError = "";
if (String.IsNullOrEmpty(strInputText) == true)
{
Debug.Assert(false,"Paste(),strInputText为null 或者 空字符串");
strError = "Paste(),strInputText为null 或者 空字符串";
return -1;
}
if (startItem == null)
{
this.SetXml(strInputText);
return 0;
}
if (startItem == this.VirtualRoot)
{
this.SetXml(strInputText);
return 0;
}
// 根据startItem的类型，把输入的字符串拼成xml
string strXml = "";
if (startItem is AttrItem)
strXml = "<root " + strInputText + " />";
else
strXml = "<root>" + strInputText + "</root>";
XmlDocument dom = new XmlDocument();
try
{
dom.LoadXml(strXml);
}
catch(Exception ex)
{
strError = "paste() error,原因:" + ex.Message;
return -1;
}
// item是新创建的临时元素
ElementItem item = new ElementItem(this);
ElementInitialStyle style = new ElementInitialStyle();
style.attrsExpandStyle = ExpandStyle.Expand;
style.childrenExpandStyle = ExpandStyle.Expand;
style.bReinitial = false;
item.Initial(dom.DocumentElement,this.allocator,style, false); // !!!
// myParent是要覆盖的元素的父亲
ElementItem myParent = (ElementItem)startItem.parent;
int nIndex = 0;
bool bAttr = false;
if (startItem is AttrItem)
{
bAttr = true;
nIndex = myParent.attrs.IndexOf(startItem);
Debug.Assert(nIndex != -1,"不可能的情况");
AttrItem startAttr = (AttrItem)startItem;
foreach(AttrItem attr in item.attrs)
{
myParent.InsertAttrInternal(startAttr,
attr,
false,
false);
}
myParent.RemoveAttrInternal(startAttr,false);
}
else
{
bAttr = false;
// 找到startItem在myParent所有儿子中的索引位置
nIndex = myParent.children.IndexOf(startItem);
Debug.Assert(nIndex != -1,"不可能的情况");
// 在startItem位置前面插入item的所有儿子
foreach(Item child in item.children)
{
// TODO: try
// Exception:
// 可能会抛出PrefixNotDefineException异常
myParent.InsertChildInternal(startItem,
child,
false,
false);
}
// 删除startItem
myParent.RemoveChildInternal(startItem,false);
}
myParent.InitialVisual();
int nWidth , nHeight;
myParent.Layout(myParent.Rect.X,
myParent.Rect.Y,
myParent.Rect.Width,
0, //设为0，主要是高度变化
this.nTimeStampSeed++,
out nWidth,
out nHeight,
LayoutMember.Layout | LayoutMember.Up);
if (bSetFocus == true)
{
if (bAttr == true)
{
Item curItem = myParent.attrs[nIndex];
this.SetCurText(curItem,null);
this.SetActiveItem(curItem);
}
else
{
Item curItem = myParent.children[nIndex];
this.SetCurText(curItem,null);
this.SetActiveItem(curItem);
}
}
else
{
this.SetCurText(this.m_selectedItem,this.m_curText);
}
// 可能会改变文档根, 重设一下
if (startItem.Parent == this.VirtualRoot)
this.docRoot = this.GetDocRoot(); // 2006/6/22 xietao
this.AfterDocumentChanged(ScrollBarMember.Both);
this.Invalidate();
// 文档发生变化
this.FireTextChanged();
myParent.Flush();
return 0;
}
