selecttooltaskwebconfigurator.cs

C#开发的ArcGIS Server9.2地图选择控件

using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Text;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using ESRI.ArcGIS.ADF.Web.DataSources;
using ESRI.ArcGIS.ADF.Web;
using ESRI.ArcGIS.ADF.Web.UI.WebControls;
using ESRI.ArcGIS.ADF.Web.UI.WebControls.Design;
using ESRI.ArcGIS.ADF.Web.DataSources.Graphics;

namespace SelectToolTask
{
    /// <summary>
    /// Provides a configurator for Manager for the task
    /// </summary>
    class SelectToolTaskWebConfigurator: 
        ESRI.ArcGIS.ADF.Web.UI.WebControls.CompositeControl,
        IWebConfigurator, IBuddyControlSupport
    {
        #region Private fields for controls
        TextBox dialogTitle;
        RadioButton rbnAllowAllLayers;
        RadioButton rbnSpecifyAvailableLayers;
        ListBox lstAvailableLayers;
        TextBox txtSelectionTolerance;
        LiteralControl litInvalidResources;
        CheckBox ckbRenderSelectionSet;
        ColorPicker cpSelectionSetColor;
        ColorPicker cpHighlightColor;
        CheckBox ckbHidePreviousSelections;
        private string idStringDelim = "___";
        #endregion

        #region Web control

        protected override void CreateChildControls()
        {
            #region Setup and dialog title
            Controls.Clear();

            Table ctlTable = new Table();
            Controls.Add(ctlTable);
            TableCell tCell;

            // Title row
            tCell = CreateCellRow(ctlTable, 0);

            tCell.Text = "<strong>Select Tool Task</strong><br/>";

            tCell = CreateCellRow(ctlTable, 30);
            tCell.Text = "Allows users to select features by clicking on the map<br/>";
            tCell = CreateCellRow(ctlTable, 0);
            tCell.Controls.Add(new LiteralControl("Title for dialog in browser: "));
            dialogTitle = new TextBox();
            dialogTitle.ID = "dialogTitle";
            tCell.Controls.Add(dialogTitle);

            #endregion

            #region Selection layers available to user

            tCell = CreateCellRow(ctlTable, 0);
            rbnAllowAllLayers = new RadioButton();
            rbnAllowAllLayers.ID = "rbnAllowAllLayers";
            rbnAllowAllLayers.GroupName = "AllowLayers";
            rbnAllowAllLayers.Text = "Allow user to select from any queryable layer";
            rbnAllowAllLayers.Checked = true;
            tCell.Controls.Add(rbnAllowAllLayers);

            tCell = CreateCellRow(ctlTable, 0);
            rbnSpecifyAvailableLayers = new RadioButton();
            rbnSpecifyAvailableLayers.ID = "rbnSpecifyAvailableLayers";
            rbnSpecifyAvailableLayers.GroupName = rbnAllowAllLayers.GroupName;
            rbnSpecifyAvailableLayers.Text = "Specify selectable layers";
            rbnSpecifyAvailableLayers.Checked = false;
            tCell.Controls.Add(rbnSpecifyAvailableLayers);

            tCell = CreateCellRow(ctlTable, 150); // TODO: reduce width
            lstAvailableLayers = new ListBox();
            lstAvailableLayers.ID = "lstAvailableLayers";
            lstAvailableLayers.ToolTip = "Choose layers that the user may select from. Use Ctrl/Shift to select multiple layers.";
            tCell.Controls.Add(lstAvailableLayers);

            litInvalidResources = new LiteralControl();
            litInvalidResources.ID = "lblInvalidResources";
            litInvalidResources.Text = "<br/><span style=\"color:red\">";
            string[] invalidResources = null;

            // Get a list of queryable layers in all map resources/services
            try
            {
                ListItem[] queryLayers = this.GetQueryableLayers(out invalidResources);
                if (queryLayers.Length > 0)
                    lstAvailableLayers.Items.AddRange(queryLayers);
                else
                {
                    lstAvailableLayers.Items.Add(new ListItem("(No queryable layers found)", "null"));
                    lstAvailableLayers.Enabled = false;
                    rbnSpecifyAvailableLayers.Enabled = false;
                }

                // if any map services aren't responding, let user know which ones
                if (invalidResources.Length > 0) {
                    litInvalidResources.Text += String.Concat(
                        "<br/>Service failed to initialize/respond: ",
                        String.Join("; ", invalidResources), "</span>");
                    tCell.Controls.Add(litInvalidResources);
                }
            }
            catch (Exception e)
            {
                System.Diagnostics.Debug.WriteLine("Exception: " + e.Message);
                lstAvailableLayers.Items.Add(new ListItem("(Error retrieving layers)", "null"));
                lstAvailableLayers.Enabled = false;
                rbnSpecifyAvailableLayers.Enabled = false;

                litInvalidResources.Text += String.Concat(
                    "<br/>Server error details:", e.Message, "</span>");
                tCell.Controls.Add(litInvalidResources);
            }
            lstAvailableLayers.SelectionMode = ListSelectionMode.Multiple;
            lstAvailableLayers.Width = new Unit(200, UnitType.Pixel);
            lstAvailableLayers.Rows = 8;
            
            #endregion

            #region Other options

            tCell = CreateCellRow(ctlTable, 0);
            tCell.Controls.Add(new LiteralControl("Selection tolerance (pixels) "));
            txtSelectionTolerance = new TextBox();
            txtSelectionTolerance.ID = "txtSelectionTolerance";
            txtSelectionTolerance.ToolTip = "Number of pixels around user-drawn graphics to select." +
                " Must be greater than zero to select from point or line layers with point tool.";
            txtSelectionTolerance.Text = gSelTask.PointSelectionTolerance.ToString();
            txtSelectionTolerance.Width = new Unit(20, UnitType.Pixel);
            tCell.Controls.Add(txtSelectionTolerance);

            tCell = CreateCellRow(ctlTable, 0);

            ckbRenderSelectionSet = new CheckBox();
            ckbRenderSelectionSet.ID = "ckbRenderSelectionSet";
            ckbRenderSelectionSet.Text = "Highlight all features found ";
            ckbRenderSelectionSet.Checked = true;
            ckbRenderSelectionSet.ToolTip = "If true, all features found are rendered (highlighted) upon selection. Users may also highlight individual features, but turning off all-feature rendering also hides highlights on individual features.";
            tCell.Controls.Add(ckbRenderSelectionSet);

            cpSelectionSetColor = new ColorPicker();
            cpSelectionSetColor.ID = "selectionSetColorPicker";
            cpSelectionSetColor.Font.Name = "Verdana";
            cpSelectionSetColor.Font.Size = new FontUnit(new Unit(8, UnitType.Point));
            cpSelectionSetColor.BackColor = System.Drawing.Color.White;
            cpSelectionSetColor.DropDownBorderColor = System.Drawing.Color.Silver;
            cpSelectionSetColor.DropDownBorderStyle = BorderStyle.Solid;
            cpSelectionSetColor.DropDownBorderWidth = new Unit(1, UnitType.Pixel);
            cpSelectionSetColor.ChosenColor = System.Drawing.Color.Yellow;
            cpSelectionSetColor.ShowColorNames = false;
            cpSelectionSetColor.DisplayText = "Color for all features ";
            //cpSelectionSetColor.ToolTip = "Click to choose color to use for selecting features";
            tCell.Controls.Add(cpSelectionSetColor);

            tCell = CreateCellRow(ctlTable, 0);
            cpHighlightColor = new ColorPicker();
            cpHighlightColor.ID = "cpHighlightColor";
            cpHighlightColor.Font.Name = "Verdana";
            cpHighlightColor.Font.Size = new FontUnit(new Unit(8, UnitType.Point));
            cpHighlightColor.BackColor = System.Drawing.Color.White;
            cpHighlightColor.DropDownBorderColor = System.Drawing.Color.Silver;
            cpHighlightColor.DropDownBorderStyle = BorderStyle.Solid;
            cpHighlightColor.DropDownBorderWidth = new Unit(1, UnitType.Pixel);
            cpHighlightColor.ChosenColor = System.Drawing.Color.Aqua;
            cpHighlightColor.ShowColorNames = false;
            cpHighlightColor.DisplayText = "Color for individual feature highlight ";
            tCell.Controls.Add(cpHighlightColor);

            tCell = CreateCellRow(ctlTable, 0);
            ckbHidePreviousSelections = new CheckBox();
            ckbHidePreviousSelections.ID = "ckbHidePreviousSelections";
            ckbHidePreviousSelections.Text = "Hide previous selections on select ";
            ckbHidePreviousSelections.Checked = true;
            ckbHidePreviousSelections.ToolTip = "Whether to hide prior selections with this task when a new selection is made.";
            tCell.Controls.Add(ckbHidePreviousSelections);

            #endregion

            #region OK/cancel row
            tCell = CreateCellRow(ctlTable, 0);

            Button okButton = new Button();
            okButton.ID = "okButton";
            okButton.Text = "OK";
            okButton.Width = new Unit(75, UnitType.Pixel);
            okButton.Click += new EventHandler(okButton_Click);
            tCell.Controls.Add(okButton);

            Button cancelButton = new Button();
            cancelButton.ID = "cancelButton";
            cancelButton.Text = "Cancel";
            cancelButton.Width = new Unit(75, UnitType.Pixel);
            cancelButton.Click += new EventHandler(cancelButton_Click);
            tCell.Controls.Add(cancelButton);
            
            #endregion
        }

        private TableCell CreateCellRow(Table table, int indentPixels)
        {
            TableRow tRow = new TableRow();
            table.Rows.Add(tRow);
            TableCell tCell = new TableCell();
            tCell.Wrap = false;
            tCell.Style[HtmlTextWriterStyle.FontWeight] = "normal";
            if (indentPixels < 1)
            {
                tCell.ColumnSpan = 2;
            }
            else
            {
                TableCell spCell = new TableCell();
                spCell.Text = "&nbsp;";
                spCell.Width = new Unit(indentPixels, UnitType.Pixel);
                tRow.Cells.Add(spCell);
            }
            tRow.Cells.Add(tCell);
            return tCell;
        }

        private void cancelButton_Click(object sender, EventArgs e)
        {
            OnWebConfigurationCancel(new EventArgs());
        }

        private void okButton_Click(object sender, EventArgs e)
        {
            if (gSelTask == null)
                return;

            // get user-selected values from the web dialog and store them in the task
            gSelTask.Title = dialogTitle.Text;
            gSelTask.PointSelectionTolerance = int.Parse(txtSelectionTolerance.Text);
            gSelTask.HidePreviousSelections = ckbHidePreviousSelections.Checked;
            if (rbnAllowAllLayers.Checked)
            {
                gSelTask.SelectionLayerNames = null;
            }
            else
            {
                // compile a list of selectable layers
                StringBuilder sbLayers = new StringBuilder();
                foreach (ListItem lyrItem in lstAvailableLayers.Items)
                    if (lyrItem.Selected)
                    {
                        if (sbLayers.Length > 0)
                            sbLayers.Append("::");
                        sbLayers.Append(lyrItem.Text);
                    }
                gSelTask.SelectionLayerNames = sbLayers.ToString();