private void ChangeDisplayGecko(ListPagePattern currentPattern)
{
try
{
if (!string.IsNullOrWhiteSpace(lastTitleXPath))
{
Gecko.DOM.XPathResult oldTemp = geckoWebBrowser.Document.EvaluateXPath(lastTitleXPath);
GeckoNode[] oldNodes = oldTemp.GetNodes().ToArray();
for (int i = 0; i < oldNodes.Length; i++)
{
GeckoElement toNoGreen = oldNodes[i] as GeckoElement;
toNoGreen.SetAttribute("style", ""); //将大框标为无色
}
}
Gecko.DOM.XPathResult temp = geckoWebBrowser.Document.EvaluateXPath(currentPattern.Path.ItemRootXPath);
GeckoNode[] nodes = temp.GetNodes().ToArray();
for (int i = 0; i < nodes.Length; i++)
{
GeckoElement toGreen = nodes[i] as GeckoElement;
toGreen.SetAttribute("style", "border:1px solid #F00;background-color:#87CEEB;"); //将大框标为红框蓝底
}
lastTitleXPath = currentPattern.Path.ItemRootXPath;
}
catch { }
}
private void btn_Parser_Click(object sender, RoutedEventArgs e)
{
if (string.IsNullOrWhiteSpace(txt_url.Text))
{
MessageBox.Show("Pleasr input the url to parser.");
return;
}
listPagePatterns = new List <ListPagePattern>();
selectedPattern = null;
lastTitleXPath = null;
channelUrl = txt_url.Text;
if (checkUseBrowser.IsChecked ?? false)
{
httpResult = SeleniumHelper.HttpRequest(channelUrl);
}
else
{
httpResult = HttpHelper.HttpRequest(channelUrl);
}
if (httpResult != null && httpResult.HttpCode == 200)
{
listPagePatterns = SmartParser.Extract_Patterns(channelUrl, httpResult.Content, MediaType.WebNews, Enums.Language.CHINESE);
RefreshUI();
}
}
private void btnModel_Checked(object sender, RoutedEventArgs e)
{
string checkedButton = ((RadioButton)sender).Name;
if (checkedButton.Equals(selectedModel))
{
return;
}
if (checkedButton.Equals("btnModel1") && listPagePatterns.Count > 0)
{
selectedPattern = listPagePatterns[0];
}
else if (checkedButton.Equals("btnModel2") && listPagePatterns.Count > 1)
{
selectedPattern = listPagePatterns[1];
}
else if (checkedButton.Equals("btnModel3") && listPagePatterns.Count > 2)
{
selectedPattern = listPagePatterns[2];
}
else if (checkedButton.Equals("btnModel4") && listPagePatterns.Count > 3)
{
selectedPattern = listPagePatterns[3];
}
else if (checkedButton.Equals("btnModel5") && listPagePatterns.Count > 4)
{
selectedPattern = listPagePatterns[4];
}
txtBaseXpath.Text = selectedPattern.Path?.ItemRootXPath;
ChangeSelectedXpath();
ChangeDisplayGecko(selectedPattern);
selectedModel = checkedButton;
}
private void RefreshUI()
{
selectedPattern = null;
if (string.IsNullOrEmpty(channelUrl) || listPagePatterns == null)
{
this.Dispatcher.Invoke(new Action(() => {
//控制浏览区与判断区样式
geckoFormHost.IsEnabled = false;
geckoWebBrowser.Navigate("about:blank");
geckoWebBrowser.IsAccessible = false;
btnRight.IsEnabled = false;
btnWrong.IsEnabled = false;
//清除表格和下拉框样式与数据
dataGridItems.IsEnabled = false;
cmbUrlXpath.IsEnabled = false;
cmbTitleXpath.IsEnabled = false;
cmbTimeXpath.IsEnabled = false;
cmbAuthorXpath.IsEnabled = false;
cmbUrlXpath.Items.Clear();
cmbTitleXpath.Items.Clear();
cmbTimeXpath.Items.Clear();
cmbAuthorXpath.Items.Clear();
//清除模式选择按钮状态
btnModel1.IsChecked = false;
btnModel2.IsChecked = false;
btnModel3.IsChecked = false;
btnModel4.IsChecked = false;
btnModel5.IsChecked = false;
btnModel1.IsEnabled = false;
btnModel2.IsEnabled = false;
btnModel3.IsEnabled = false;
btnModel4.IsEnabled = false;
btnModel5.IsEnabled = false;
}));
}
else
{
this.Dispatcher.Invoke(new Action(() =>
{
//启用浏览区域与操作区域，加载缓存的网页
geckoFormHost.IsEnabled = true;
try
{
if (geckoWebBrowser.Url != new Uri(channelUrl))
{
geckoWebBrowser.Navigate(channelUrl);
}
}
catch { }
geckoWebBrowser.IsAccessible = true;
btnRight.IsEnabled = true;
btnWrong.IsEnabled = true;
cmbUrlXpath.Items.Clear();
cmbTitleXpath.Items.Clear();
cmbTimeXpath.Items.Clear();
cmbAuthorXpath.Items.Clear();
//在 listPatterns 不为 null 的情况下绑定第一个模式的数据
if (listPagePatterns != null && listPagePatterns.Count > 0)
{
selectedPattern = listPagePatterns[0];
cmbUrlXpath.Items.Add(selectedPattern.Path.UrlXPath);
cmbTitleXpath.Items.Add(selectedPattern.Path.TitleXPath);
cmbTimeXpath.Items.Add(selectedPattern.Path.DateXPath ?? "");
//获取备选的时间模式
if (selectedPattern.BackUpPaths.ContainsKey(PatternType.Date))
{
List <string> tempPaths = selectedPattern.BackUpPaths[PatternType.Date];
//判断是否为空，以及是否和当选的Xpath相同
if (tempPaths != null)
{
foreach (string tempPath in tempPaths)
{
if (!string.IsNullOrEmpty(tempPath) && !tempPath.Equals(selectedPattern.Path.DateXPath))
{
cmbTimeXpath.Items.Add(tempPath);
}
}
}
}
if (!string.IsNullOrEmpty(selectedPattern.Path.DateXPath))
{
cmbTimeXpath.Items.Add("");
}
cmbAuthorXpath.Items.Add(selectedPattern.Path.AuthorXPath ?? "");
//获取备选的作者模式
if (selectedPattern.BackUpPaths.ContainsKey(PatternType.Author))
{
List <string> tempPaths = selectedPattern.BackUpPaths[PatternType.Author];
//判断是否为空，以及是否和当选的Xpath相同
if (tempPaths != null)
{
foreach (string tempPath in tempPaths)
{
if (!string.IsNullOrEmpty(tempPath) && !tempPath.Equals(selectedPattern.Path.AuthorXPath))
{
cmbAuthorXpath.Items.Add(tempPath);
}
}
}
}
if (!string.IsNullOrEmpty(selectedPattern.Path.AuthorXPath))
{
cmbAuthorXpath.Items.Add("");
}
cmbUrlXpath.SelectedIndex = 0;
cmbTitleXpath.SelectedIndex = 0;
cmbTimeXpath.SelectedIndex = 0;
cmbAuthorXpath.SelectedIndex = 0;
txtBaseXpath.Text = selectedPattern.Path?.ItemRootXPath;
var contents = XpathParser.ParseList(httpResult.Content, JsonConvert.SerializeObject(selectedPattern.Path), channelUrl);
//绑定出事DataGrid
dataGridItems.ItemsSource = contents.Articles;
}
//启用表格和下拉框
dataGridItems.IsEnabled = true;
cmbUrlXpath.IsEnabled = false;
cmbTitleXpath.IsEnabled = true;
cmbTimeXpath.IsEnabled = true;
cmbAuthorXpath.IsEnabled = true;
//根据数据情况确定模式按钮的可用性
btnModel1.IsEnabled = listPagePatterns.Count > 0;
btnModel2.IsEnabled = listPagePatterns.Count > 1;
btnModel3.IsEnabled = listPagePatterns.Count > 2;
btnModel4.IsEnabled = listPagePatterns.Count > 3;
btnModel5.IsEnabled = listPagePatterns.Count > 4;
btnModel1.IsChecked = true;
btnModel2.IsChecked = false;
btnModel3.IsChecked = false;
btnModel4.IsChecked = false;
btnModel5.IsChecked = false;
ChangeDisplayGecko(selectedPattern);
}));
}
}
