using System;
using System.Data;
using System.Web.UI.WebControls;
using qminoa.BLL.PM;
using qminoa.DA;

namespace qminoa.Webs.PM
{
	public class UserList : qminoa.Webs.PageBase
	{
		protected System.Web.UI.WebControls.DropDownList BranchDropList;
		protected System.Web.UI.WebControls.DropDownList DepartmentDropList;
		protected System.Web.UI.WebControls.DataGrid Users;
		private string temp_rolename = string.Empty;
		private PMUser	 _user;
		public const string UserRoleAdministrator = "1";

		private void Page_Load(object sender, System.EventArgs e)
		{
			this.PageBegin("項(xiàng)目角色管理",true);
			_user = new PMUser(Convert.ToInt16(this.Empid));
			if(_user.Role != UserRoleAdministrator)
			{
				Response.Redirect(Application["vRoot"]+"/login.aspx");  
			}
			if (!Page.IsPostBack)
			{
				LoadBraDep();
				LoadUsers();
			}
		}
		
		protected RolesCollection GetRoles()
		{
			return Roles.GetRoles();
		}

		private void LoadBraDep()
		{
			AdminDB admin = new AdminDB();
			BranchDropList.DataSource=admin.GetAllBranch();
			BranchDropList.DataBind();
			BranchDropList.Items[0].Selected=true;

			DepartmentDropList.DataSource=admin.GetDepByBranch(Int32.Parse(BranchDropList.SelectedItem.Value));
			DepartmentDropList.DataBind();
		}

		private void LoadUsers()
		{
			UsersCollection users = PMUser.GetUsers(_user.UserID, _user.Role,Int32.Parse(DepartmentDropList.SelectedItem.Value));
			SortGridData(users, SortField, SortAscending);
			Users.DataSource = users;
			Users.DataKeyField = "UserID";
			Users.DataBind();
		}

		private void SortGridData(UsersCollection list, string sortField, bool asc)
		{
			UsersCollection.UserFields sortCol = UsersCollection.UserFields.InitValue;

			switch(sortField)
			{
				case "UserName":
					sortCol = UsersCollection.UserFields.UserName;
					break;
				case "RoleName":
					sortCol = UsersCollection.UserFields.RoleName;
					break;
			}

			list.Sort(sortCol, asc);
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.BranchDropList.SelectedIndexChanged += new System.EventHandler(this.BranchDropList_SelectedIndexChanged);
			this.DepartmentDropList.SelectedIndexChanged += new System.EventHandler(this.DepartmentDropList_SelectedIndexChanged);
			this.Users.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.Users_PageIndexChanged);
			this.Users.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.Users_CancelCommand);
			this.Users.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.Users_EditCommand);
			this.Users.SortCommand += new System.Web.UI.WebControls.DataGridSortCommandEventHandler(this.Users_Sort);
			this.Users.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.Users_UpdateCommand);
			this.Users.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.Users_ItemDataBound);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Users_Sort(object source, System.Web.UI.WebControls.DataGridSortCommandEventArgs e)
		{
			SortField = e.SortExpression;
			LoadUsers();
		}

		private void Users_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			Users.EditItemIndex= -1;
			Users.CurrentPageIndex = e.NewPageIndex;
			LoadUsers();
		}

		private void Users_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			Users.EditItemIndex = e.Item.ItemIndex;
			temp_rolename = ((Label) e.Item.FindControl("lblGridRoleName")).Text.Trim();
			LoadUsers();
		}

		private void Users_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			int _userid;
			int _roleid;
			_userid = Convert.ToInt32(Users.DataKeys[e.Item.ItemIndex].ToString());
			DropDownList currentRoleNameList = (DropDownList) e.Item.FindControl("ddlRoles");
			_roleid = Convert.ToInt16(currentRoleNameList.SelectedItem.Value);
			PMUser.UpdateUserRole(_userid,_roleid);
			Users.EditItemIndex = -1;
			LoadUsers();
		}

		private void Users_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			Users.EditItemIndex = -1;
			LoadUsers();
		}

		private void Users_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
		{
			if (e.Item.ItemType == ListItemType.EditItem) 
			{
				DropDownList currentRoleNameList = (DropDownList) e.Item.FindControl("ddlRoles");
				currentRoleNameList.SelectedIndex = currentRoleNameList.Items.IndexOf(currentRoleNameList.Items.FindByText(temp_rolename));
			}
		}

		private void BranchDropList_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			AdminDB admin = new AdminDB();
			DepartmentDropList.DataSource=admin.GetDepByBranch(Int32.Parse(BranchDropList.SelectedItem.Value));
			DepartmentDropList.DataBind();
			if(DepartmentDropList.Items.Count !=0)
			{
				Users.DataSource = PMUser.GetUsers(_user.UserID, _user.Role,Int32.Parse(DepartmentDropList.SelectedItem.Value));
				Users.DataBind();
			}
			else
			{
				Users.DataSource = PMUser.GetUsers(_user.UserID, _user.Role,0);
				Users.DataBind();
			}
		}

		private void DepartmentDropList_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			Users.DataSource = PMUser.GetUsers(_user.UserID, _user.Role,Int32.Parse(DepartmentDropList.SelectedItem.Value));
			Users.DataBind();
		}

		string SortField 
		{
			get 
			{
				object o = ViewState["SortField"];
				if (o == null) 
					return string.Empty;

				return (string)o;
			}

			set 
			{
				if (value == SortField) 
					SortAscending = !SortAscending;

				ViewState["SortField"] = value;
			}
		}

		bool SortAscending 
		{
			get 
			{
				object o = ViewState["SortAscending"];
				if (o == null) 
					return true;

				return (bool)o;
			}

			set 
			{
				ViewState["SortAscending"] = value;
			}
		}
	}
}