public CssSpacingBox(CssBox tableBox, ref CssBox extendedBox, int startRow)
: base(tableBox, new HtmlTag("none", false, new Dictionary<string, string> { { "colspan", "1" } }))
{
_extendedBox = extendedBox;
Display = CssConstants.None;
_startRow = startRow;
_endRow = startRow + Int32.Parse(extendedBox.GetAttribute("rowspan", "1")) - 1;
}
/// <summary>
/// Read styles defined inside the dom structure in links and style elements.<br/>
/// If the html tag is "style" tag parse it content and add to the css data for all future tags parsing.<br/>
/// If the html tag is "link" that point to style data parse it content and add to the css data for all future tags parsing.<br/>
/// </summary>
/// <param name="box">the box to parse style data in</param>
/// <param name="htmlContainer">the html container to use for reference resolve</param>
/// <param name="cssData">the style data to fill with found styles</param>
/// <param name="cssDataChanged">check if the css data has been modified by the handled html not to change the base css data</param>
private void CascadeParseStyles(CssBox box, HtmlContainerInt htmlContainer, ref CssData cssData, ref bool cssDataChanged)
{
if (box.HtmlTag != null)
{
// Check for the <link rel=stylesheet> tag
if (box.HtmlTag.Name.Equals("link", StringComparison.CurrentCultureIgnoreCase) &&
box.GetAttribute("rel", string.Empty).Equals("stylesheet", StringComparison.CurrentCultureIgnoreCase))
{
CloneCssData(ref cssData, ref cssDataChanged);
string stylesheet;
CssData stylesheetData;
StylesheetLoadHandler.LoadStylesheet(htmlContainer, box.GetAttribute("href", string.Empty), box.HtmlTag.Attributes, out stylesheet, out stylesheetData);
if (stylesheet != null)
_cssParser.ParseStyleSheet(cssData, stylesheet);
else if (stylesheetData != null)
cssData.Combine(stylesheetData);
}
// Check for the <style> tag
if (box.HtmlTag.Name.Equals("style", StringComparison.CurrentCultureIgnoreCase) && box.Boxes.Count > 0)
{
CloneCssData(ref cssData, ref cssDataChanged);
foreach (var child in box.Boxes)
_cssParser.ParseStyleSheet(cssData, child.Text.CutSubstring());
}
}
foreach (var childBox in box.Boxes)
{
CascadeParseStyles(childBox, htmlContainer, ref cssData, ref cssDataChanged);
}
}
/// <summary>
/// Get attribute value by given key starting search from given box, search up the tree until
/// attribute found or root.
/// </summary>
/// <param name="box">the box to start lookup at</param>
/// <param name="attribute">the attribute to get</param>
/// <returns>the value of the attribute or null if not found</returns>
public static string GetAttribute(CssBox box, string attribute)
{
string value = null;
while (box != null && value == null)
{
value = box.GetAttribute(attribute, null);
box = box.ParentBox;
}
return value;
}
/// <summary>
/// Gets the span attribute of the tag of the specified box
/// </summary>
/// <param name="b"></param>
private static int GetSpan(CssBox b)
{
double f = CssValueParser.ParseNumber(b.GetAttribute("span"), 1);
return Math.Max(1, Convert.ToInt32(f));
}
/// <summary>
/// Gets the rowspan of the specified box
/// </summary>
/// <param name="b"></param>
private static int GetRowSpan(CssBox b)
{
string att = b.GetAttribute("rowspan", "1");
int rowspan;
if (!int.TryParse(att, out rowspan))
{
return 1;
}
return rowspan;
}
/// <summary>
/// Gets the colspan of the specified box
/// </summary>
/// <param name="b"></param>
private static int GetColSpan(CssBox b)
{
string att = b.GetAttribute("colspan", "1");
int colspan;
if (!int.TryParse(att, out colspan))
{
return 1;
}
return colspan;
}
