OPMS/03-程式設計階段/TmpWeb/OT.Controls/Toolbar/Toolbar.cs

using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing.Design;
using System.Web.UI.Design;
using System.ComponentModel.Design;

namespace OT.Controls.Toolbar
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:Toolbar runat=server></{0}:Toolbar>")]
    public class Toolbar : WebControl, INamingContainer, IPostBackEventHandler
    {


        private ToolbarItemCollection FItems = null;
        #region " ViewState 狀態管理　"

        /// <summary>
        /// 由 ViewState 還原控制項的狀態。
        /// </summary>
        /// <param name="savedState">要還原的控制項狀態。</param>
        protected override void LoadViewState(object savedState)
        {
            if ((savedState != null))
            {
                // Load State from the array of objects that was saved at ;
                // SavedViewState.
                object[] myState = (object[])savedState;

                if ((myState[0] != null))
                {
                    base.LoadViewState(myState[0]);
                }

                if ((myState[1] != null))
                {
                    FItems = (ToolbarItemCollection)myState[1];
                }
            }
        }

        /// <summary>
        /// 控制項的狀態儲存至 ViewState。
        /// </summary>
        /// <returns>含有控制項之目前檢視狀態的物件。</returns>
        protected override object SaveViewState()
        {
            object baseState = base.SaveViewState();
            object[] myState = new object[2];
            myState[0] = baseState;
            myState[1] = this.Items;
            return myState;
        }

        #endregion

        #region " Click 事件 "
        /// <summary>
        /// Click 事件引數。
        /// </summary>
        public class ClickEventArgs : System.EventArgs
        {

            private string FKey = string.Empty;
            /// <summary>
            /// 項目鍵值。
            /// </summary>
            public string Key
            {
                get { return FKey; }
                set { FKey = value; }
            }
        }

        /// <summary>
        /// 按下工具列按鈕所引發的事件。
        /// </summary>
        [Description("按下工具列按鈕所引發的事件。")]
        public event ClickEventHandler Click;
        public delegate void ClickEventHandler(object sender, ClickEventArgs e);

        /// <summary>
        /// 引發 Click 事件。
        /// </summary>
        protected virtual void OnClick(object sender, ClickEventArgs e)
        {
            if (Click != null)
            {
                Click(this, e);
            }
        }
        #endregion

        /// <summary>
        /// 工具列項目集合。
        /// </summary>
        [Description("工具列項目集合。"), PersistenceMode(PersistenceMode.InnerProperty), DesignerSerializationVisibility(DesignerSerializationVisibility.Content), Editor(typeof(ToolbarItemCollectionEditor), typeof(UITypeEditor))]
        public ToolbarItemCollection Items
        {
            get
            {
                if (FItems == null)
                {
                    FItems = new ToolbarItemCollection();
                }
                return FItems;
            }
        }

        /// <summary>
        /// 覆寫 RenderContents 方法。
        /// </summary>
        protected override void RenderContents(System.Web.UI.HtmlTextWriter writer)
        {
            Control oControl = null;

            this.Controls.Clear();
            foreach (ToolbarItem oItem in this.Items)
            {
                if (oItem is ToolbarButton)
                {
                    //建立 Button 控制項
                    oControl = CreateToolbarButton((ToolbarButton)oItem);
                }
                else if (oItem is ToolbarTextbox)
                {
                    //建立 Textbox 控制項
                    oControl = CreateToolbarTextbox((ToolbarTextbox)oItem);
                }
                else
                {
                    //建立 Label 控制項
                    oControl = CreateToolbarLabel((ToolbarLabel)oItem);
                }
                this.Controls.Add(oControl);
            }
            base.RenderContents(writer);
        }

        protected override void RenderChildren(HtmlTextWriter writer)
        {
            base.RenderChildren(writer);
        }

        public override void RenderControl(HtmlTextWriter writer)
        {
            base.RenderControl(writer);
        }

        public override void RenderBeginTag(HtmlTextWriter writer)
        {
            base.RenderBeginTag(writer);
        }

        public override void RenderEndTag(HtmlTextWriter writer)
        {
            base.RenderEndTag(writer);
        }

        protected override void AddAttributesToRender(HtmlTextWriter writer)
        {
            base.AddAttributesToRender(writer);
        }

        protected override void AddedControl(Control control, int index)
        {
            base.AddedControl(control, index);
        }

        protected override void OnPreRender(EventArgs e)
        {
            base.OnPreRender(e);
        }

        protected override void Render(HtmlTextWriter writer)
        {
            base.Render(writer);
        }

        /// <summary>
        /// 建立工具列按鈕。
        /// </summary>
        private Control CreateToolbarButton(ToolbarButton Item)
        {
            System.Web.UI.HtmlControls.HtmlButton oButton = new System.Web.UI.HtmlControls.HtmlButton();
            string sScript = null;
            oButton.InnerText = Item.Text;
            oButton.Disabled = !Item.Enabled;
            oButton.Visible = Item.Visible;
            oButton.CausesValidation = Item.CausesValidation;
            oButton.ID = Item.Key;
            oButton.Attributes.Add("class", Item.CssClass);
            oButton.Attributes.Add("ShowWaiting", "");      //Add By Ted 2014/07/31 自定義屬性套用等待畫面效果
            //oButton.ConfirmMessage = Item.ConfirmMessage;
            sScript = Item.PreJs + ";" + Item.Js + ";" + this.Page.ClientScript.GetPostBackEventReference(this, Item.Key, true) + ";" + Item.NextJs;
            
            oButton.Attributes.Add("onclick", sScript);

            return oButton;
        }

        /// <summary>
        /// 建立工具列文字框。
        /// </summary>
        private Control CreateToolbarTextbox(ToolbarTextbox Item)
        {
            TextBox oTextBox = new TextBox();

            string sScript = null;
            oTextBox.Text = Item.Text;
            oTextBox.Enabled = Item.Enabled;
            oTextBox.ID = Item.Key;
            oTextBox.CssClass = Item.CssClass;
            oTextBox.CausesValidation = Item.CausesValidation;
            //sScript = this.Page.ClientScript.GetPostBackEventReference(this, Item.Key);
            sScript = Item.PreJs + ";" + Item.Js + ";" + this.Page.ClientScript.GetPostBackEventReference(this, Item.Key, true) + ";" + Item.NextJs;
            
            oTextBox.Attributes.Add("onclick", sScript);
            return oTextBox;
        }

        /// <summary>
        /// 建立工具列標籤。
        /// </summary>
        private Control CreateToolbarLabel(ToolbarLabel Item)
        {
            Label oLabel = null;

            string sScript = null;
            oLabel = new Label();
            oLabel.Text = Item.Text;
            oLabel.ID = Item.Key;
            oLabel.CssClass = Item.CssClass;
            //oLabel.CausesValidation = Item.CausesValidation;
            oLabel.Enabled = Item.Enabled;

            if (Item.Enabled)
            {
                //sScript = this.Page.ClientScript.GetPostBackEventReference(this, Item.Key);
                sScript = Item.PreJs + ";" + Item.Js + ";" + this.Page.ClientScript.GetPostBackEventReference(this, Item.Key, true) + ";" + Item.NextJs;
            
                oLabel.Attributes.Add("onclick", sScript);
            }
            return oLabel;
        }


        public void RaisePostBackEvent(string eventArgument)
        {
            ClickEventArgs oEventArgs = null;

            oEventArgs = new ClickEventArgs();
            oEventArgs.Key = eventArgument;

            //if (eventArgument == "Upd")
            //這地方是為了讓如果系統Upd功能採用前台的效果時，由於前台無法控制Upd的visble屬性，所以前台只採用displayNone的效果，但事實上是沒有改變Visble屬性的
            //但在儲存功能或刪除功能大多採用後台執行，如果發生刪除失敗或是儲存失敗，則Upd的Button則會顯示出來，原因是ToolBar的判斷是由Visble屬性，所以在這地方加上以下條件
            //讓屬於以下條件的也繼續隱藏Upd的Button
            //由於Del和Save和Clear的事件也都是在Upd隱藏時才會出現的功能，所以在這邊下這些判斷是沒有影響的     Modify by Gary 2014/06/13
            if (eventArgument == "Upd" || eventArgument == "Del" || eventArgument == "Save" || eventArgument == "Clear")

            {
                this.Items["Upd"].Visible = false;
            }
            this.OnClick(this, oEventArgs);

        }

    }
}