private static bool GetEleParentFrames(mshtml.IHTMLDOMNode root, mshtml.IHTMLDOMNode node, List <mshtml.IHTMLDOMNode> frames)
{
bool flag = false;
if (root == node)
{
return(true);
}
bool flag2 = false;
switch (root.nodeName.ToLower())
{
case "frame":
case "iframe":
flag2 = true;
break;
}
IHTMLDOMChildrenCollection childNodes = null;
if (flag2)
{
SHDocVw.IWebBrowser2 browser = root as SHDocVw.IWebBrowser2;
if (browser != null)
{
mshtml.IHTMLDocument2 document = browser.Document as mshtml.IHTMLDocument2;
if (document != null)
{
mshtml.IHTMLDOMNode parentElement = document.body.parentElement as mshtml.IHTMLDOMNode;
childNodes = parentElement.childNodes as IHTMLDOMChildrenCollection;
}
}
}
if (childNodes == null)
{
childNodes = root.childNodes as IHTMLDOMChildrenCollection;
}
if (childNodes == null)
{
return(false);
}
for (int i = 0; i < childNodes.length; i++)
{
mshtml.IHTMLDOMNode node3 = childNodes.item(i) as mshtml.IHTMLDOMNode;
if (GetEleParentFrames(node3, node, frames))
{
if (flag2)
{
frames.Add(root);
}
flag = true;
}
}
return(flag);
}
private static Element getFromCollection(IHTMLDOMChildrenCollection Collection)
{
Element element = new Element();
if (Collection != null && Collection.length > 0)
{
element.element = Collection.item(0) as IHTMLElement;
element.count = Collection.length;
}
return(element);
}
/// <summary>
/// 得到node的所有父亲frames
/// </summary>
/// <param name="root"></param>
/// <param name="elem"></param>
/// <param name="frames"></param>
/// <returns></returns>
private static bool _getEleParentFrames(IHTMLDOMNode root, IHTMLDOMNode node, List <IHTMLDOMNode> frames)
{
if (root == node)
{
return(true);
}
bool isFrame = false;
string tag = root.nodeName.ToLower();
if (tag == "frame" || tag == "iframe")
{
isFrame = true;
}
IHTMLDOMChildrenCollection cs = null;
if (isFrame)
{
IWebBrowser2 pwb = root as IWebBrowser2;
if (pwb != null)
{
IHTMLDocument2 pdoc2 = pwb.Document as IHTMLDocument2;
if (pdoc2 != null)
{
IHTMLDOMNode htmlElem = pdoc2.body.parentElement as IHTMLDOMNode;
cs = htmlElem.childNodes as IHTMLDOMChildrenCollection;
}
}
}
if (cs == null)
{
cs = root.childNodes as IHTMLDOMChildrenCollection;
}
if (cs == null)
{
return(false);
}
for (int idx = 0; idx < cs.length; idx++)
{
IHTMLDOMNode c = cs.item(idx) as IHTMLDOMNode;
if (_getEleParentFrames(c, node, frames))
{
if (isFrame)
{
frames.Add(root);
}
return(true);
}
}
return(false);
}
private void findElement()
{
HtmlElement body = _browser.Document.Body;
//C#网页元素索引（不包含文本节点）
int index = 0;
//dom元素索引（包含文本节点）
int domIndex = 0;
IHTMLDOMNode node = null;
HtmlElement element = null;
Stack <KeyValuePair <HtmlDocument, int> > frameIndex = new Stack <KeyValuePair <HtmlDocument, int> >();
// 保存网页中找到的文本节点
Stack <KeyValuePair <HtmlElement, string> > textNode = new Stack <KeyValuePair <HtmlElement, string> >(body.All.Count);
// 保存网页中的form
//Stack<HtmlElement> form = new Stack<HtmlElement>(3);
// 保存正在遍历的元素列表
Stack <KeyValuePair <HtmlElement, int[]> > enumList = new Stack <KeyValuePair <HtmlElement, int[]> >(body.All.Count);
HtmlElement currentElement = body;
IHTMLDOMChildrenCollection domCollection = ((IHTMLDOMNode)body.DomElement).childNodes;
int currentFrameIndex = 0;
for (; domIndex < domCollection.length || enumList.Count > 0; domIndex++, index++)
{
if (domCollection.length <= domIndex)
{
KeyValuePair <HtmlElement, int[]> prev = enumList.Pop();
domCollection = ((IHTMLDOMNode)prev.Key.DomElement).childNodes;
currentElement = prev.Key;
index = prev.Value[0];
domIndex = prev.Value[1];
continue;
}
node = domCollection.item(domIndex);
if (node.nodeType == 3) // 若当前是文本节点则放入textNode中
{
string text = HandleFindedText(node.nodeValue);
if (string.IsNullOrEmpty(text) == false)
{
textNode.Push(new KeyValuePair <HtmlElement, string>(currentElement, text));
}
index--;
continue;
}
if (index >= currentElement.Children.Count)
{
continue;
}
element = currentElement.Children[index];
switch (element.TagName)
{
case Matcher.TYPE_FRAME:
case Matcher.TYPE_IFRAME:
pushToStack(enumList, currentElement, ref index, ref domIndex);
KeyValuePair <HtmlDocument, int>?lastFrame = frameIndex.Count == 0 ? (KeyValuePair <HtmlDocument, int>?)null : frameIndex.Peek();
HtmlWindow wnd = null;
if (lastFrame != null)
{
int findedIndex = 0;
foreach (var item in frameIndex)
{
if (item.Key.Window.Frames[item.Value].Document == element.Document)
{
while (findedIndex > 0)
{
frameIndex.Pop();
findedIndex--;
}
currentFrameIndex = 0;
break;
}
else if (item.Key == element.Document)
{
currentFrameIndex = item.Value + 1;
do
{
frameIndex.Pop();
findedIndex--;
} while (findedIndex >= 0);
break;
}
else
{
currentFrameIndex = 0;
}
findedIndex++;
}
}
else
{
currentFrameIndex = 0;
}
frameIndex.Push(new KeyValuePair <HtmlDocument, int>(element.Document, currentFrameIndex));
wnd = element.Document.Window.Frames[currentFrameIndex];
currentElement = wnd.Document.Body;
domCollection = ((IHTMLDOMNode)currentElement.DomElement).childNodes;
break;
case Matcher.TYPE_FORM:
if (OnFormElementDetected(element) == false)
{
return;
}
break;
case Matcher.TYPE_A:
if (OnLinkElementFinded(element, textNode) == false)
{
return;
}
break;
case Matcher.TYPE_SELECT:
if (OnSelectElementFinded(element, textNode) == false)
{
return;
}
break;
case Matcher.TYPE_INPUT:
if (InputElementFinded(element, textNode) == false)
{
return;
}
break;
case Matcher.TYPE_TEXTAREA:
if (OnTextAreaElementDetected(element, textNode) == false)
{
return;
}
break;
default:
if (OnOtherElementFinded(element) == false)
{
return;
}
break;
}
if (node.childNodes.length > 0)
{
pushToStack(enumList, currentElement, ref index, ref domIndex);
currentElement = element;
domCollection = ((IHTMLDOMNode)currentElement.DomElement).childNodes;
}
}
}
