/// <summary>
/// Init.
/// </summary>
public DomParser(CssParser cssParser)
{
ArgChecker.AssertArgNotNull(cssParser, "cssParser");
_cssParser = cssParser;
}
/// <summary>
/// Write the given html tag with all its attributes and styles.
/// </summary>
/// <param name="cssParser">used to parse CSS data</param>
/// <param name="sb">the string builder to write html into</param>
/// <param name="box">the css box with the html tag to write</param>
/// <param name="styleGen">Controls the way styles are generated when html is generated</param>
private static void WriteHtmlTag(CssParser cssParser, StringBuilder sb, CssBox box, HtmlGenerationStyle styleGen)
{
sb.AppendFormat("<{0}", box.HtmlTag.Name);
// collect all element style properties including from stylesheet
var tagStyles = new Dictionary<string, string>();
var tagCssBlock = box.HtmlContainer.CssData.GetCssBlock(box.HtmlTag.Name);
if (tagCssBlock != null)
{
// TODO:a handle selectors
foreach (var cssBlock in tagCssBlock)
foreach (var prop in cssBlock.Properties)
tagStyles[prop.Key] = prop.Value;
}
if (box.HtmlTag.HasAttributes())
{
sb.Append(" ");
foreach (var att in box.HtmlTag.Attributes)
{
// handle image tags by inserting the image using base64 data
if (styleGen == HtmlGenerationStyle.Inline && att.Key == HtmlConstants.Style)
{
// if inline style add the styles to the collection
var block = cssParser.ParseCssBlock(box.HtmlTag.Name, box.HtmlTag.TryGetAttribute("style"));
foreach (var prop in block.Properties)
tagStyles[prop.Key] = prop.Value;
}
else if (styleGen == HtmlGenerationStyle.Inline && att.Key == HtmlConstants.Class)
{
// if inline style convert the style class to actual properties and add to collection
var cssBlocks = box.HtmlContainer.CssData.GetCssBlock("." + att.Value);
if (cssBlocks != null)
{
// TODO:a handle selectors
foreach (var cssBlock in cssBlocks)
foreach (var prop in cssBlock.Properties)
tagStyles[prop.Key] = prop.Value;
}
}
else
{
sb.AppendFormat("{0}=\"{1}\" ", att.Key, att.Value);
}
}
sb.Remove(sb.Length - 1, 1);
}
// if inline style insert the style tag with all collected style properties
if (styleGen == HtmlGenerationStyle.Inline && tagStyles.Count > 0)
{
var cleanTagStyles = StripDefaultStyles(box, tagStyles);
if (cleanTagStyles.Count > 0)
{
sb.Append(" style=\"");
foreach (var style in cleanTagStyles)
sb.AppendFormat("{0}: {1}; ", style.Key, style.Value);
sb.Remove(sb.Length - 1, 1);
sb.Append("\"");
}
}
sb.AppendFormat("{0}>", box.HtmlTag.IsSingle ? "/" : "");
}
/// <summary>
/// Parse the given stylesheet to <see cref="CssData"/> object.<br/>
/// If <paramref name="combineWithDefault"/> is true the parsed css blocks are added to the
/// default css data (as defined by W3), merged if class name already exists. If false only the data in the given stylesheet is returned.
/// </summary>
/// <seealso cref="http://www.w3.org/TR/CSS21/sample.html"/>
/// <param name="adapter">Platform adapter</param>
/// <param name="stylesheet">the stylesheet source to parse</param>
/// <param name="combineWithDefault">true - combine the parsed css data with default css data, false - return only the parsed css data</param>
/// <returns>the parsed css data</returns>
public static CssData Parse(RAdapter adapter, string stylesheet, bool combineWithDefault = true)
{
CssParser parser = new CssParser(adapter);
return parser.ParseStyleSheet(stylesheet, combineWithDefault);
}
/// <summary>
/// Write the given html DOM sub-tree into the given string builder.<br/>
/// If <paramref name="selectedBoxes"/> are given write html only from those tags.
/// </summary>
/// <param name="cssParser">used to parse CSS data</param>
/// <param name="sb">the string builder to write html into</param>
/// <param name="box">the html sub-tree to write</param>
/// <param name="styleGen">Controls the way styles are generated when html is generated</param>
/// <param name="selectedBoxes">Control if to generate only selected boxes, if given only boxes found in hash will be generated</param>
/// <param name="selectionRoot">the box the is the root of selected boxes (the first box to contain multiple selected boxes)</param>
private static void WriteHtml(CssParser cssParser, StringBuilder sb, CssBox box, HtmlGenerationStyle styleGen, Dictionary<CssBox, bool> selectedBoxes, CssBox selectionRoot)
{
if (box.HtmlTag == null || selectedBoxes == null || selectedBoxes.ContainsKey(box))
{
if (box.HtmlTag != null)
{
if (box.HtmlTag.Name != "link" || !box.HtmlTag.Attributes.ContainsKey("href") ||
(!box.HtmlTag.Attributes["href"].StartsWith("property") && !box.HtmlTag.Attributes["href"].StartsWith("method")))
{
WriteHtmlTag(cssParser, sb, box, styleGen);
if (box == selectionRoot)
sb.Append("<!--StartFragment-->");
}
if (styleGen == HtmlGenerationStyle.InHeader && box.HtmlTag.Name == "html" && box.HtmlContainer.CssData != null)
{
sb.AppendLine("<head>");
WriteStylesheet(sb, box.HtmlContainer.CssData);
sb.AppendLine("</head>");
}
}
if (box.Words.Count > 0)
{
foreach (var word in box.Words)
{
if (selectedBoxes == null || word.Selected)
{
var wordText = GetSelectedWord(word, selectedBoxes != null);
sb.Append(HtmlUtils.EncodeHtml(wordText));
}
}
}
foreach (var childBox in box.Boxes)
{
WriteHtml(cssParser, sb, childBox, styleGen, selectedBoxes, selectionRoot);
}
if (box.HtmlTag != null && !box.HtmlTag.IsSingle)
{
if (box == selectionRoot)
sb.Append("<!--EndFragment-->");
sb.AppendFormat("</{0}>", box.HtmlTag.Name);
}
}
}