private static void CopyItemToFieldsInPages(HtmlDom dom, string key, string valueAttribute = null, string[] languagePreferences = null)
{
if (languagePreferences == null)
{
languagePreferences = new[] { "*", "en" }
}
;
MultiTextBase source = dom.GetBookSetting(key);
if (key == "copyright")
{
// For CC0, we store the "copyright", but don't display it in the text of the book.
var licenseUrl = dom.GetBookSetting("licenseUrl").GetExactAlternative("*");
if (licenseUrl == CreativeCommonsLicense.CC0Url)
{
source = new MultiTextBase();
}
}
foreach (XmlElement target in dom.SafeSelectNodes("//*[@data-derived='" + key + "']"))
{
//just put value into the text of the element
if (string.IsNullOrEmpty(valueAttribute))
{
//clear out what's there now
target.RemoveAttribute("lang");
target.InnerText = "";
var form = source.GetBestAlternative(languagePreferences);
if (form != null && !string.IsNullOrWhiteSpace(form.Form))
{
// HtmlDom.GetBookSetting(key) returns the result of XmlNode.InnerXml which will be Html encoded (& < etc).
// HtmlDom.SetElementFromUserStringPreservingLineBreaks() calls XmlNode.InnerText, which Html encodes if necessary.
// So we need to decode here to prevent double encoding. See http://issues.bloomlibrary.org/youtrack/issue/BL-4585.
// Note that HtmlDom.SetElementFromUserStringPreservingLineBreaks() handles embedded <br/> elements, but makes no
// effort to handle p or div elements.
var decoded = System.Web.HttpUtility.HtmlDecode(form.Form);
HtmlDom.SetElementFromUserStringSafely(target, decoded);
target.SetAttribute("lang", form.WritingSystemId); //this allows us to set the font to suit the language
}
}
else //Put the value into an attribute. The license image goes through this path.
{
target.SetAttribute(valueAttribute, source.GetBestAlternativeString(languagePreferences));
if (source.Empty)
{
//if the license image is empty, make sure we don't have some alternative text
//about the image being missing or slow to load
target.SetAttribute("alt", "");
//over in javascript land, @alt will get set appropriately when the image url is not empty.
}
}
}
}
private static void CopyStringToFieldsInPages(HtmlDom dom, string key, string val, string lang)
{
foreach (XmlElement target in dom.SafeSelectNodes("//*[@data-derived='" + key + "']"))
{
if (target == null) // don't think this can happen, but something like it seemed to in one test...
{
continue;
}
if (string.IsNullOrEmpty(val))
{
target.RemoveAttribute("lang");
target.InnerText = "";
}
else
{
HtmlDom.SetElementFromUserStringSafely(target, val);
target.SetAttribute("lang", lang);
}
}
}
