// Copyright 2010 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 


public partial class SimpleToc : System.Web.UI.Page
{
    #region ASP.NET Page Life Cycle Event Handlers

    protected void Page_Init(object sender, System.EventArgs eventArgs)
    {
        // Add an event handler for when the an item on the context menu is clicked
        ContextMenu1.ItemClicked += new ESRI.ArcGIS.ADF.Web.UI.WebControls.ContextMenuItemClickedEventHandler(ContextMenu1_ItemClicked);
    }

    protected void Page_Load(object sender, System.EventArgs eventArgs)
    {
        // Dynamically create a div element and add it to the page
        System.Web.UI.HtmlControls.HtmlGenericControl htmlDiv = new System.Web.UI.HtmlControls.HtmlGenericControl("div");
        htmlDiv.ID = "fieldDiv";
        Page.Form.Controls.Add(htmlDiv);
    }

    protected void Page_PreRenderComplete(object sender, System.EventArgs eventArgs)
    {
        if (!IsPostBack)
        {
            // Create a new context menu item and add it to the context menu
            ESRI.ArcGIS.ADF.Web.UI.WebControls.ContextMenuItem showFieldsContextMenuItem =
                new ESRI.ArcGIS.ADF.Web.UI.WebControls.ContextMenuItem();
            showFieldsContextMenuItem.Text = "Show Fields";
            showFieldsContextMenuItem.ImageUrl = "images/wrench.gif";
            ContextMenu1.Items.Add(showFieldsContextMenuItem);

            // Get a map functionality object from the map.  
            ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality commonMapFunctionality = null;
            foreach (ESRI.ArcGIS.ADF.Web.DataSources.IGISFunctionality gisFunctionality in Map1.GetFunctionalities())
            {
                if (gisFunctionality is ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality)
                {
                    commonMapFunctionality = gisFunctionality as ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality;
                    break;
                }
            }

            // Initialize the nodes corresponding to each MapTocFunctionality object
            foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapTocFunctionality mapTocFunctionality in Toc1.GetFunctionalities())
            {
                // Get the Toc data frames referenced by the current MapTocFunctionality
                ESRI.ArcGIS.ADF.Web.TocDataFrame[] tocDataFrameArray =
                    mapTocFunctionality.GetMapContents(commonMapFunctionality.Name, Map1.ImageFormat, Map1.UseMimeData, false);

                // Initialize the nodes of each TocDataFrame in the array
                for (int i = 0; i < tocDataFrameArray.Length; i++)
                {
                    // Find the resource-level node corresponding to the current MapTocFunctionality's resource
                    ESRI.ArcGIS.ADF.Web.UI.WebControls.TreeViewPlusNodeCollection layersTreeViewPlusNodeCollection = null;
                    foreach (ESRI.ArcGIS.ADF.Web.UI.WebControls.TreeViewPlusNode resourceTreeViewPlusNode in Toc1.Nodes)
                    {
                        if (resourceTreeViewPlusNode.Text == mapTocFunctionality.Resource.Name)
                        {
                            // Get the layer nodes from the resource node
                            layersTreeViewPlusNodeCollection = resourceTreeViewPlusNode.Nodes;
                            break;
                        }
                    }

                    // Set the client-side events for each layer node
                    foreach (ESRI.ArcGIS.ADF.Web.UI.WebControls.TreeViewPlusNode layerTreeViewPlusNode in layersTreeViewPlusNodeCollection)
                    {
                        // Set the layer node to do nothing when clicked
                        layerTreeViewPlusNode.ClickBehavior = ESRI.ArcGIS.ADF.Web.UI.WebControls.TreeViewPlusNodeClickBehavior.None;

                        // Construct a JavaScript call to the Web ADF function that displays a context menu, specifying our custom context
                        // menu (ContextMenu1) as the context menu to be displayed
                        string jsShowDataContextMenu = string.Format("esriShowContextMenu(event,'{0}','{1}','{2}'); var contextNode = $find('{2}');if (contextNode){{ contextNode.style.backgroundColor = '{3}' }} this.style.backgroundColor = '{4}'; contextNode = this; return false;", ContextMenu1.ClientID, Toc1.UniqueID, layerTreeViewPlusNode.NodeID, System.Drawing.ColorTranslator.ToHtml(Toc1.BackColor), System.Drawing.ColorTranslator.ToHtml(System.Drawing.Color.LightBlue));
                        // Wire the context menu displaying JavaScript to the layer node's oncontextmenu event
                        layerTreeViewPlusNode.TextCellAttributes.Add("oncontextmenu", jsShowDataContextMenu);

                        // Construct the JavaScript needed to set the color of the layer node to the Toc's hover color and wire this JavaScript
                        // to the node's onmouseover event
                        string jsOnMouseOver = string.Format("this.style.color = '{0}';", System.Drawing.ColorTranslator.ToHtml(Toc1.HoverColor));
                        layerTreeViewPlusNode.TextCellAttributes.Add("onmouseover", jsOnMouseOver);

                        // Construct the JavaScript needed to set the color of the layer node to the Toc's forecolor and wire this JavaScript
                        // to the node's onmouseout event
                        string jsOnMouseOut = string.Format("this.style.color = '{0}';", System.Drawing.ColorTranslator.ToHtml(Toc1.ForeColor));
                        layerTreeViewPlusNode.TextCellAttributes.Add("onmouseout", jsOnMouseOut);

                    }
                }
            }
       }
    }

    #endregion

    #region Web ADF Control Event Handlers

    // Fires when an item on the custom context menu is clicked
    void ContextMenu1_ItemClicked(object sender, 
        ESRI.ArcGIS.ADF.Web.UI.WebControls.ContextMenuItemEventArgs contextMenuItemEventArgs)
    {
        // Get the node's ID from the passed-in arguments
        string nodeID = contextMenuItemEventArgs.Context;

        // Get a reference to the node
        ESRI.ArcGIS.ADF.Web.UI.WebControls.TreeViewPlusNode treeViewPlusNode = Toc1.Nodes.FindByNodeID(nodeID);

        // Get a reference to the Toc control from the passed-in arguments
        ESRI.ArcGIS.ADF.Web.UI.WebControls.Toc adfToc =
            contextMenuItemEventArgs.Control as ESRI.ArcGIS.ADF.Web.UI.WebControls.Toc;

        // Get the MapTocFunctionality that includes the current node
        ESRI.ArcGIS.ADF.Web.DataSources.IMapTocFunctionality mapTocFunctionality = 
            adfToc.GetFunctionality(treeViewPlusNode.Parent.Value);

        // Use the MapTocFunctionality to create a QueryFunctionality
        ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality commonQueryFunctionality = 
            mapTocFunctionality.Resource.CreateFunctionality(typeof(ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality), 
            "mapTocQueryFunctionality") as ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality;

        // Use the QueryFunctionality to get an array containing all the fields in the layer corresponding to the node
        string[] fieldArray = commonQueryFunctionality.GetFields(null, treeViewPlusNode.Value);

        // Loop through the field array and build HTML markup that will display the fields
        string fieldListMarkup = "<div style='font-weight: bold'>" + treeViewPlusNode.Text + " Fields: </div>";
        foreach (string field in fieldArray)
        {
            fieldListMarkup += field + "<br>";
        }

        // Create a callback result that will inject the field list markup into the fieldDiv and add it to the
        // context menu's callback results collection
        ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult displayFieldsCallbackResult =
            ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult.CreateSetInnerContent("fieldDiv", fieldListMarkup);

        // Create JavaScript call to reset background color of the active layer node
        string resetNodeBackground = string.Format("var contextNodeCell = $get('{0}_textCell'); contextNodeCell.style.backgroundColor = '{1}';", nodeID, System.Drawing.ColorTranslator.ToHtml(Toc1.BackColor));

        ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult resetNodeBackgroundCallbackResult = 
            ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult.CreateJavaScript(resetNodeBackground);

        // Add custom callback results to context menu.  The context menu initiated the request thus its callback results will 
        // be included in the response.
        ContextMenu1.CallbackResults.Add(displayFieldsCallbackResult);
        ContextMenu1.CallbackResults.Add(resetNodeBackgroundCallbackResult);
    }

    #endregion
}