public void NullConditions()
{
MultiTextBase text = new MultiTextBase();
Assert.AreSame(string.Empty, text["foo"], "never before heard of alternative should give back an empty string");
Assert.AreSame(string.Empty, text["foo"], "second time");
Assert.AreSame(string.Empty, text.GetBestAlternative("fox"));
text.SetAlternative("zox", "");
Assert.AreSame(string.Empty, text["zox"]);
text.SetAlternative("zox", null);
Assert.AreSame(string.Empty, text["zox"], "should still be empty string after setting to null");
text.SetAlternative("zox", "something");
text.SetAlternative("zox", null);
Assert.AreSame(string.Empty, text["zox"], "should still be empty string after setting something and then back to null");
}
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);
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.SetElementFromUserStringPreservingLineBreaks(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 CopyItemToFieldsInPages(HtmlDom dom, string key, string valueAttribute = null, string[] languagePreferences = null)
{
if (languagePreferences == null)
{
languagePreferences = new[] { "*", "en" }
}
;
MultiTextBase source = dom.GetBookSetting(key);
var target = dom.SelectSingleNode("//*[@data-derived='" + key + "']");
if (target == null)
{
return;
}
//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.SetElementFromUserStringPreservingLineBreaks(target, form.Form);
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.
}
}
}
public void UsesNextAlternativeWhenMissing()
{
MultiTextBase multiTextBase = new MultiTextBase();
multiTextBase["wsWithNullElement"] = null;
multiTextBase["wsWithEmptyElement"] = "";
multiTextBase["wsWithContent"] = "hello";
Assert.AreEqual(String.Empty, multiTextBase.GetExactAlternative("missingWs"));
Assert.AreEqual(String.Empty, multiTextBase.GetExactAlternative("wsWithEmptyElement"));
Assert.AreEqual("hello", multiTextBase.GetBestAlternative("missingWs"));
Assert.AreEqual("hello", multiTextBase.GetBestAlternative("wsWithEmptyElement"));
Assert.AreEqual("hello*", multiTextBase.GetBestAlternative("wsWithEmptyElement", "*"));
Assert.AreEqual("hello", multiTextBase.GetBestAlternative("wsWithNullElement"));
Assert.AreEqual("hello*", multiTextBase.GetBestAlternative("wsWithNullElement", "*"));
Assert.AreEqual("hello", multiTextBase.GetExactAlternative("wsWithContent"));
Assert.AreEqual("hello", multiTextBase.GetBestAlternative("wsWithContent"));
Assert.AreEqual("hello", multiTextBase.GetBestAlternative("wsWithContent", "*"));
}