private void EditKeyword()
{
if (CategoryTree.SelectedNode.Tag is KeywordAndUser)
{
KeywordAndUser target = (KeywordAndUser)(CategoryTree.SelectedNode.Tag);
KeywordsEditForm cf = new KeywordsEditForm();
cf.Text = "编辑关键字";
cf.KeywordName = target.KeywordName;
cf.KeywordDesc = target.KeywordDesc;
cf.KeywordRate = target.KeywordRate;
if (cf.ShowDialog() == DialogResult.OK)
{
target.KeywordName = cf.KeywordName;
target.KeywordDesc = cf.KeywordDesc;
target.KeywordRate = cf.KeywordRate;
CategoryTree.SelectedNode.Text = target.KeywordName;
CategoryTree.SelectedNode.ToolTipText = target.KeywordDesc;
db.SubmitChanges();
TreeNode tn = CategoryTree.SelectedNode;
PresentColor(ref tn, target.KeywordRate);
}
}
}
private void DelKeyword()
{
if (CategoryTree.SelectedNode.Tag is KeywordAndUser)
{
KeywordAndUser ku = (KeywordAndUser)CategoryTree.SelectedNode.Tag;
if (MessageBox.Show("确认删除该关键字吗？所有标记有该关键字的书籍将被取消该关键字。", "删除", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
Keywords k = ku.Keyword;
JianLiLinq.Default.DelKeyword(k);
CategoryTree.SelectedNode.Tag = null;
CategoryTree.SelectedNode.Remove();
}
}
}
private void CreateSonNode(TreeNode target)
{
if (target.Tag is Categories)
{
if (target.Nodes.Count == 1 && target.Nodes[0].Text == "占位")
{
target.Nodes.Clear();
// 初始化子类别
var cs = from c in db.Categories
where c.CategoryParent == ((Categories)target.Tag).CategoryID
select c;
foreach (var c in cs)
{
TreeNode tn = new TreeNode();
tn.Tag = c;
tn.Text = c.CategoryName;
tn.ToolTipText = c.CategoryDesc;
tn.Nodes.Add("占位");
target.Nodes.Add(tn);
}
// 初始化关键字
var ks = from k in db.Keywords
where k.CategoryId == ((Categories)target.Tag).CategoryID
orderby k.KeywordRate descending, k.KeywordName descending
select k;
foreach (var k in ks)
{
TreeNode tn = new TreeNode();
KeywordAndUser ku = new KeywordAndUser();
ku.UserKeyword = JianLiLinq.Default.GetUserKeyword(k);
ku.Keyword = k;
tn.Tag = ku;
tn.Text = k.KeywordName;
tn.ToolTipText = k.KeywordDesc;
PresentColor(ref tn, ku.KeywordRate);
target.Nodes.Add(tn);
}
SortKeyword(target.Nodes);
}
}
}
// 结果为tn1-tn2（如果有效）
private int Compare(TreeNode tn1, TreeNode tn2)
{
if (tn1.Tag is KeywordAndUser && tn2.Tag is KeywordAndUser)
{
KeywordAndUser k1 = tn1.Tag as KeywordAndUser;
KeywordAndUser k2 = tn2.Tag as KeywordAndUser;
if (k1.KeywordRate != k2.KeywordRate)
{
return(k1.KeywordRate - k2.KeywordRate);
}
else
{
return(k1.KeywordName.CompareTo(k2.KeywordName));
}
}
return(0);
}
private void NewKeyword()
{
if (this.CategoryTree.SelectedNode.Tag is Categories)
{
Categories target = (Categories)(this.CategoryTree.SelectedNode.Tag);
// 这里先借用新建类别的对话框
NewCategoryForm nkf = new NewCategoryForm();
nkf.Text = "新建关键字";
if (nkf.ShowDialog() == DialogResult.OK)
{
Keywords nk = new Keywords {
KeywordName = nkf.CategoryName,
KeywordDesc = nkf.CategoryDesc,
KeywordRate = 3,
Categories = target
};// 注意这里Categories的赋值
nk.KeywordSubPath = JianLi3FileServiceManager.Default.CreateSubFolderInLib(nk.KeywordName);
db.Keywords.InsertOnSubmit(nk);
db.SubmitChanges();
KeywordAndUser ku = new KeywordAndUser();
ku.Keyword = nk;
ku.UserKeyword = JianLiLinq.Default.GetUserKeyword(nk);
db.SubmitChanges();
TreeNode tn = new TreeNode();
tn.Tag = ku;
tn.Text = nk.KeywordName;
tn.ToolTipText = nk.KeywordDesc;
tn.ForeColor = Color.Blue;
CreateSonNode(CategoryTree.SelectedNode);
CategoryTree.SelectedNode.Nodes.Add(tn);
}
}
}
