uComponents: Added XPathCheckBoxList to the core

components/editorControls/XPathCheckBoxList/XPathCheckBoxListDataEditor.cs

@@ -0,0 +1,159 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web.UI;
+using System.Web.UI.WebControls;
+using System.Xml.Linq;
+// using uComponents.Core;
+using umbraco.interfaces;
+
+namespace umbraco.editorControls.XPathCheckBoxList
+{
+	/// <summary>
+	/// Renders a CheckBoxList using with option nodes obtained by an XPath expression
+	/// </summary>
+	public class XPathCheckBoxListDataEditor : CompositeControl, IDataEditor
+	{
+		/// <summary>
+		/// Field for the data.
+		/// </summary>
+		private IData data;
+
+		/// <summary>
+		/// Field for the options.
+		/// </summary>
+		private XPathCheckBoxListOptions options;
+
+		/// <summary>
+		/// Field for the checkbox list.
+		/// </summary>
+		private CheckBoxList checkBoxList = new CheckBoxList();
+
+		/// <summary>
+		/// Gets a value indicating whether [treat as rich text editor].
+		/// </summary>
+		/// <value>
+		/// 	<c>true</c> if [treat as rich text editor]; otherwise, <c>false</c>.
+		/// </value>
+		public virtual bool TreatAsRichTextEditor
+		{
+			get
+			{
+				return false;
+			}
+		}
+
+		/// <summary>
+		/// Gets a value indicating whether [show label].
+		/// </summary>
+		/// <value><c>true</c> if [show label]; otherwise, <c>false</c>.</value>
+		public virtual bool ShowLabel
+		{
+			get
+			{
+				return true;
+			}
+		}
+
+		/// <summary>
+		/// Gets the editor.
+		/// </summary>
+		/// <value>The editor.</value>
+		public Control Editor
+		{
+			get
+			{
+				return this;
+			}
+		}
+
+		/// <summary>
+		/// Initializes a new instance of XPathCheckBoxListDataEditor
+		/// </summary>
+		/// <param name="data"></param>
+		/// <param name="options"></param>
+		internal XPathCheckBoxListDataEditor(IData data, XPathCheckBoxListOptions options)
+		{
+			this.data = data;
+			this.options = options;
+		}
+
+		/// <summary>
+		/// Called by the ASP.NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering.
+		/// </summary>
+		protected override void CreateChildControls()
+		{
+			this.checkBoxList.DataSource = uQuery.GetNodesByXPath(this.options.XPath).ToNameIds();
+			this.checkBoxList.DataTextField = "Value";
+			this.checkBoxList.DataValueField = this.options.UseIds ? "Key" : "Value";
+			this.checkBoxList.DataBind();
+
+			this.Controls.Add(this.checkBoxList);
+		}
+
+		/// <summary>
+		/// Raises the <see cref="E:System.Web.UI.Control.Load"/> event.
+		/// </summary>
+		/// <param name="e">The <see cref="T:System.EventArgs"/> object that contains the event data.</param>
+		protected override void OnLoad(EventArgs e)
+		{
+			base.OnLoad(e);
+			this.EnsureChildControls();
+
+			if (!this.Page.IsPostBack && this.data.Value != null)
+			{
+				string value = this.data.Value.ToString();
+				List<string> selectedValues = new List<string>();
+
+				if (xmlHelper.CouldItBeXml(value))
+				{
+					// build selected values from XML fragment
+					foreach (XElement nodeXElement in XElement.Parse(value).Elements())
+					{
+						selectedValues.Add(nodeXElement.Value);
+					}
+				}
+				else
+				{
+					// Assume a CSV source
+					selectedValues = value.Split(',').ToList();
+				}
+
+				// Find checkboxes where values match the stored values and set to selected
+				ListItem checkBoxListItem = null;
+				foreach (string selectedValue in selectedValues)
+				{
+					checkBoxListItem = this.checkBoxList.Items.FindByValue(selectedValue);
+					if (checkBoxListItem != null)
+					{
+						checkBoxListItem.Selected = true;
+					}
+				}
+			}
+		}
+
+		/// <summary>
+		/// Called by Umbraco when saving the node
+		/// </summary>
+		public void Save()
+		{
+			// Get all checked item values
+			IEnumerable<string> selectedOptions = from ListItem item in this.checkBoxList.Items
+												  where item.Selected
+												  select item.Value;
+
+			if (this.options.UseXml)
+			{
+				string elementName = this.options.UseIds ? "nodeId" : "nodeName";
+
+				this.data.Value = new XElement("XPathCheckBoxList",
+					selectedOptions.Select(x => new XElement(elementName, x.ToString()))).ToString();
+			}
+			else
+			{
+				// Save the CSV
+				this.data.Value = string.Join(",", selectedOptions.ToArray());
+			}
+		}
+	}
+}