void FillCoverImage(LibraryChannel channel)
{
if (_issue_query_strings.Count == 0)
return;
PlaceHolder line = (PlaceHolder)this.FindControl("coverline");
if (line == null)
return;
string displayBlank = this.DisplayBlankIssueCover; // 缺省 "displayBlank,hideWhenAllBlank"
string strPrefferSize = this.IssueCoverSize; // "MediumImage"; // "LargeImage",
int nNotBlankCount = 0;
StringBuilder text = new StringBuilder();
foreach (IssueString s in _issue_query_strings)
{
string strUri = "";
string strError = "";
// 获得指定一期的封面图片 URI
// parameters:
// strBiblioPath 书目记录路径
// strQueryString 检索词。例如 “2005|1|1000|50”。格式为 年|期号|总期号|卷号。一般为 年|期号| 即可。
int nRet = channel.GetIssueCoverImageUri(null,
this.BiblioRecPath,
s.Query,
strPrefferSize,
out strUri,
out strError);
if (nRet == -1)
{
strError = "(用户 '" + channel.UserName + "') " + strError;
text.Append("<div>" + HttpUtility.HtmlEncode(strError) + "</div>");
continue;
}
OpacApplication app = (OpacApplication)this.Page.Application["app"];
string strUrl = "";
if (string.IsNullOrEmpty(strUri))
{
if (StringUtil.IsInList("displayBlank", displayBlank) == false)
continue;
if (strPrefferSize == "LargeImage")
strUrl = MyWebPage.GetStylePath(app, "blankcover_large.png");
else
strUrl = MyWebPage.GetStylePath(app, "blankcover_medium.png");
}
else
{
strUrl = "./getobject.aspx?uri=" + HttpUtility.UrlEncode(strUri);
nNotBlankCount++;
}
text.Append("<div class='issue_cover' ><img src='" + strUrl + "' alt='封面图像' ></img><div class='issue_no'>" + HttpUtility.HtmlEncode(s.Volume) + "</div></div>");
}
if (StringUtil.IsInList("hideWhenAllBlank", displayBlank) == true
&& nNotBlankCount == 0)
{
}
else
{
LiteralControl literal = new LiteralControl();
literal.ID = "";
literal.Text = "<div class='issue_cover_frame' >" + text.ToString() + "</div>";
line.Controls.Add(literal);
}
_issue_query_strings.Clear();
}