// When user done with editing the message template category.
// Two possible cases:
// 1) Add a new category, or
// 2) Modify an existed category.
private void treeViewMessageTemplate_AfterLabelEdit(object sender, NodeLabelEditEventArgs e)
{
if (e.Label == null || e.Label.Trim().Length == 0)
{
e.CancelEdit = true;
e.Node.BeginEdit();
return;
}
String categoryName = e.Label;
MessageTemplateCategoryType categoryType = (MessageTemplateCategoryType)e.Node.Tag;
if (categoryType != null)
{
// Modify an existed category.
if (categoryName == categoryType.CategoryName)
{
return;
}
categoryType.CategoryName = categoryName;
MessageTemplateCategoryDAL.UpdateOneMessageTemplateCategory(categoryType);
this.treeViewMessageTemplate.LabelEdit = false;
this.treeViewMessageTemplate.SelectedNode = e.Node;
return;
}
// Add a new category.
categoryType = new MessageTemplateCategoryType();
categoryType.ParentCategoryId = -1;
categoryType.CategoryName = categoryName;
categoryType.CategoryDescription = "";
// Check if there is any category with the same category name.
MessageTemplateCategoryType existedCategoryType = MessageTemplateCategoryDAL.GetMessageTemplateCategory(categoryName);
if (existedCategoryType != null)
{
MessageBox.Show("已存在此消息模板主题，请输入不同模板主题！", "错误",
MessageBoxButtons.OK, MessageBoxIcon.Error);
e.CancelEdit = true;
e.Node.BeginEdit();
return;
}
// Insert the new category to database and return the new category id.
int newCatId = 0;
MessageTemplateCategoryDAL.InsertOneMessageTemplateCategory(categoryType, out newCatId);
categoryType.CategoryId = newCatId;
e.Node.EndEdit(false);
e.Node.Tag = categoryType;
this.treeViewMessageTemplate.SelectedNode = e.Node;
this.treeViewMessageTemplate.LabelEdit = false;
}
// Delete a message template category, if there are any message templates under
// this category, prompt user.
private void ToolStripMenuItemDelCategory_Click(object sender, EventArgs e)
{
TreeNode node = treeViewMessageTemplate.SelectedNode;
if (node == null)
{
return;
}
if (node.Tag == null)
{
return;
}
if (node.Tag.GetType() != typeof(MessageTemplateCategoryType))
{
return;
}
MessageTemplateCategoryType categoryType = (MessageTemplateCategoryType)node.Tag;
int categoryId = categoryType.CategoryId;
DataTable dtMessageTemplates = MessageTemplateDAL.GetAllMessageTemplatesWithCategoryId(categoryId);
if (dtMessageTemplates.Rows.Count > 0)
{
if (MessageBox.Show(string.Format("确认删除主题 {0}？ 我们将删除所有隶属该主题的消息模板",
categoryType.CategoryName), "请确认",
MessageBoxButtons.YesNo, MessageBoxIcon.Question)
== System.Windows.Forms.DialogResult.No)
{
return;
}
}
// Either cases:
// 1) The category has message templates and user confirmed to delete the category.
// 2) The category has no message templates.
// Delete all the relevant message templates first.
foreach (DataRow dr in dtMessageTemplates.Rows)
{
int messageTemplateId = StringUtil.GetSafeInt(dr["TemplateId"]);
MessageTemplateDAL.DeleteOneMessageTemplate(messageTemplateId);
}
MessageTemplateCategoryDAL.DeleteOneMessageTemplateCategory(categoryType.CategoryId);
treeViewMessageTemplate.Nodes.Remove(node);
}
private void LoadAllMessageTemplates()
{
this.tvMessageTemplates.Nodes.Clear();
DataTable dtMessageCategories = MessageTemplateCategoryDAL.GetAllMessageTemplateCategories();
DataTable dtMessageTemplates = MessageTemplateDAL.GetAllMessageTemplates();
foreach (DataRow drCategory in dtMessageCategories.Rows)
{
int categoryId = StringUtil.GetSafeInt(drCategory["CategoryId"]);
String categoryName = StringUtil.GetSafeString(drCategory["CategoryName"]);
MessageTemplateCategoryType catType = new MessageTemplateCategoryType();
TreeNode catNode = new TreeNode();
catNode.Tag = catType;
catNode.Text = categoryName;
catNode.Name = categoryId.ToString();
this.tvMessageTemplates.Nodes.Add(catNode);
}
foreach (DataRow drMessageTemplate in dtMessageTemplates.Rows)
{
int templateId = StringUtil.GetSafeInt(drMessageTemplate["TemplateId"]);
int categoryId = StringUtil.GetSafeInt(drMessageTemplate["TemplateCategoryId"]);
String templateName = StringUtil.GetSafeString(drMessageTemplate["TemplateName"]);
String templateContent = StringUtil.GetSafeString(drMessageTemplate["TemplateContent"]);
MessageTemplateType templateType = new MessageTemplateType();
templateType.TemplateId = templateId;
templateType.TemplateCategoryId = categoryId;
templateType.TemplateName = templateName;
templateType.TemplateContent = templateContent;
TreeNode msgNode = new TreeNode();
msgNode.Tag = templateType;
msgNode.Text = templateName;
TreeNode[] catNodes = this.tvMessageTemplates.Nodes.Find(categoryId.ToString(), false);
if (catNodes.Length > 0)
{
catNodes[0].Nodes.Add(msgNode);
}
}
this.tvMessageTemplates.ExpandAll();
}
// Load all message template categories.
private void LoadAllMessageTemplateCategories()
{
DataTable dtCategories = MessageTemplateCategoryDAL.GetAllMessageTemplateCategories();
this.treeViewMessageTemplate.Nodes.Clear();
foreach (DataRow dr in dtCategories.Rows)
{
int categoryId = StringUtil.GetSafeInt(dr["CategoryId"]);
String categoryName = StringUtil.GetSafeString(dr["CategoryName"]);
MessageTemplateCategoryType categoryType = new MessageTemplateCategoryType();
categoryType.CategoryId = categoryId;
categoryType.CategoryName = categoryName;
TreeNode newNode = new TreeNode();
newNode.Tag = categoryType;
newNode.Text = categoryName;
newNode.Name = categoryId.ToString();
this.treeViewMessageTemplate.Nodes.Add(newNode);
}
}