public static void SetSource(DependencyObject element, HyperlinkTextProperties value)
{
if (element == null)
{
return;
}
element.SetValue(SourceProperty, value);
}
private static void Replace(TextBlock textBlock, HyperlinkTextProperties links)
{
int hashtagSuffix = 0;
int mentionSuffix = 0;
int urlSuffix = 0;
if (links.Hashtags == null)
{
links.Hashtags = new List <HashtagEntity>();
}
if (links.Mentions == null)
{
links.Mentions = new List <UserMentionEntity>();
}
if (links.Urls == null)
{
links.Urls = new List <UrlEntity>();
}
int index;
int treatedIndex = -1;
var untreatedHashtagExist = hashtagSuffix < links.Hashtags.Count;
var untreatedMentionExist = mentionSuffix < links.Mentions.Count;
var untreatedUrlExist = urlSuffix < links.Urls.Count;
while (true)
{
index = 99999;
if (untreatedHashtagExist)
{
index = Math.Min(index, links.Hashtags[hashtagSuffix].Indices[0]);
}
if (untreatedMentionExist)
{
index = Math.Min(index, links.Mentions[mentionSuffix].Indices[0]);
}
if (untreatedUrlExist)
{
index = Math.Min(index, links.Urls[urlSuffix].Indices[0]);
}
if (index == 99999)
{
break;
}
// サロゲートペアを2文字とした場合のindexの数値を計算
int surrogateIndex = CalculateSurrogateIndex(links.Text, index);
// 置換するリンクまでをプレーンテキストとして流し込む
textBlock.Inlines.Add(new Run()
{
Text = Escape(links.Text.Substring(treatedIndex + 1, surrogateIndex - treatedIndex - 1), links.Media)
});
treatedIndex = surrogateIndex;
// ハッシュタグの置換
if (untreatedHashtagExist && index == links.Hashtags[hashtagSuffix].Indices[0])
{
ReplaceHashtag(textBlock, links.Hashtags[hashtagSuffix], links.HashtagCommand);
treatedIndex += links.Hashtags[hashtagSuffix].Indices[1] - links.Hashtags[hashtagSuffix].Indices[0] - 1;
hashtagSuffix++;
}
// メンションの置換
else if (untreatedMentionExist && index == links.Mentions[mentionSuffix].Indices[0])
{
ReplaceMention(textBlock, links.Mentions[mentionSuffix], links.MentionCommand);
treatedIndex += links.Mentions[mentionSuffix].Indices[1] - links.Mentions[mentionSuffix].Indices[0] - 1;
mentionSuffix++;
}
// URLの置換
else if (untreatedUrlExist && index == links.Urls[urlSuffix].Indices[0])
{
ReplaceUrl(textBlock, links.Urls[urlSuffix], links.UrlCommand);
treatedIndex += links.Urls[urlSuffix].Indices[1] - links.Urls[urlSuffix].Indices[0] - 1;
urlSuffix++;
}
untreatedHashtagExist = hashtagSuffix < links.Hashtags.Count;
untreatedMentionExist = mentionSuffix < links.Mentions.Count;
untreatedUrlExist = urlSuffix < links.Urls.Count;
}
if (LengthInTextElements(links.Text) > treatedIndex + 1)
{
textBlock.Inlines.Add(new Run()
{
Text = Escape(links.Text.Substring(treatedIndex + 1), links.Media)
});
}
}
