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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / Adapters / XhtmlAdapters / XhtmlBasicSelectionListAdapter.cs / 1305376 / XhtmlBasicSelectionListAdapter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System; using System.Globalization; using System.Security.Permissions; using System.Web.UI; using System.Collections.Specialized; using System.Web.UI.MobileControls; using System.Web.UI.MobileControls.Adapters; using System.Text.RegularExpressions; using System.Text; #if COMPILING_FOR_SHIPPED_SOURCE namespace System.Web.UI.MobileControls.ShippedAdapterSource.XhtmlAdapters #else namespace System.Web.UI.MobileControls.Adapters.XhtmlAdapters #endif { ///[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")] public class XhtmlSelectionListAdapter : XhtmlControlAdapter { /// protected new SelectionList Control { get { return base.Control as SelectionList; } } /// public override void Render(XhtmlMobileTextWriter writer) { // Assumption: XhtmlBasic devices all support tables (conforming to spec). if (Control.Items.Count == 0) { return; } if ((String) Device[XhtmlConstants.RequiresOnEnterForward] == "true") { AddOnEnterForward(writer); } int selectedIndex = Control.SelectedIndex; switch(Control.SelectType) { case ListSelectType.DropDown: case ListSelectType.ListBox: case ListSelectType.MultiSelectListBox: RenderSelectElement (writer); break; case ListSelectType.Radio: case ListSelectType.CheckBox: RenderInputElementSet (writer); break; } } private void AddOnEnterForward(XhtmlMobileTextWriter writer) { if (Control.SelectType == ListSelectType.CheckBox) { // ASURT 142732 writer.AddOnEnterForwardSetVar(Control.UniqueID); return; } bool firstIndex = true; StringBuilder builder = new StringBuilder(); for (int i = 0; i < Control.Items.Count; i++) { if (Control.Items[i].Selected) { if (!firstIndex) { builder.Append(";"); } builder.Append(i.ToString(CultureInfo.InvariantCulture)); firstIndex = false; } } writer.AddOnEnterForwardSetVar(Control.UniqueID, builder.ToString()); } /// public override bool LoadPostData (String key, NameValueCollection data, Object controlPrivateData, out bool dataChanged) { String[] selectedItems = data.GetValues(key); // If no post data is included, and the control is either not visible, or // not on active form, this call should be ignored (the lack of post data // is not due to there being no selection, but due to there being no // markup rendered that could generate the post data). if (selectedItems == null && (!Control.Visible || Control.Form != Control.MobilePage.ActiveForm)) { dataChanged = false; return true; } // Case where nothing is selected. if(selectedItems == null || (selectedItems.Length == 1 && (selectedItems[0] == null || selectedItems[0].Length == 0))) { selectedItems = new String[] {}; } // multiselect case with more than one selection. if(selectedItems.Length == 1 && selectedItems[0].IndexOf(';') > -1) { String selected = selectedItems[0]; // Eliminate trailing semicolon, if there is one. selected = Regex.Replace(selected, ";$", ""); selectedItems = Regex.Split(selected, ";"); } int[] selectedItemIndices = new int[selectedItems.Length]; // Note: controlPrivateData is selected indices from the viewstate. int[] originalSelectedIndices = (int[])controlPrivateData; dataChanged = false; // If SelectType is DropDown && nothing was selected, select // first elt. (Non-mobile DropDown does same by getting SelectedIndex). if(Control.SelectType == ListSelectType.DropDown && originalSelectedIndices.Length == 0 && Control.Items.Count > 0) { Control.Items[0].Selected = true; originalSelectedIndices = new int[]{0}; } for(int i = 0; i < selectedItems.Length; i++) { selectedItemIndices[i] = Int32.Parse(selectedItems[i], CultureInfo.InvariantCulture); } // Do not assume posted selected indices are ascending. // We do know originalSelectedIndices are ascending. Array.Sort(selectedItemIndices); // Check whether selections have changed. if(selectedItemIndices.Length != originalSelectedIndices.Length) { dataChanged = true; } else { for(int i = 0; i < selectedItems.Length; i++) { if(selectedItemIndices[i] != originalSelectedIndices[i]) { dataChanged = true; } } } for (int i = 0; i < Control.Items.Count; i++) { Control.Items[i].Selected = false; } for(int i = 0; i < selectedItemIndices.Length; i++) { Control.Items[selectedItemIndices[i]].Selected = true; } return true; } void RenderInputElementSet (XhtmlMobileTextWriter writer) { string wrappingTag = Device.Tables ? "table" : (((string)Device["usePOverDiv"] == "true") ? "p" : "div"); ListSelectType selectType = Control.SelectType; MobileListItemCollection items = Control.Items; // Review: We always render a table. Should we optimize away the table tags when the alignment is left? String selectTypeString = (selectType == ListSelectType.Radio) ? "radio" : "checkbox"; ClearPendingBreakIfDeviceBreaksOnBlockLevel(writer); // Since we are writing a block-level element in all cases. ConditionalEnterLayout(writer, Style); RenderOpeningListTag(writer, wrappingTag); for(int itemIndex = 0; itemIndex < items.Count; itemIndex++) { MobileListItem item = items[itemIndex]; if (Device.Tables) { writer.WriteFullBeginTag("tr"); writer.WriteFullBeginTag("td"); } writer.WriteBeginTag("input"); writer.WriteAttribute("type", selectTypeString); writer.WriteAttribute("name", Control.UniqueID); WriteItemValueAttribute(writer, itemIndex, item.Value); String accessKey = GetCustomAttributeValue(item, XhtmlConstants.AccessKeyCustomAttribute); if (accessKey != null && accessKey.Length > 0) { writer.WriteAttribute("accesskey", accessKey, true); } // Assumption: Device.SupportsUncheck is always true for Xhtml devices. if (item.Selected && (Control.IsMultiSelect || itemIndex == Control.SelectedIndex)) { writer.Write(" checked=\"checked\"/>"); } else { writer.Write("/>"); } writer.WriteEncodedText(item.Text); if (Device.Tables) { writer.WriteEndTag("td"); } if((string)Device["usePOverDiv"] == "true" || !Device.Tables) { writer.Write("
"); } if (Device.Tables) { writer.WriteEndTag("tr"); } } RenderClosingListTag(writer, wrappingTag); ConditionalExitLayout(writer, Style); } void RenderSelectElement (XhtmlMobileTextWriter writer) { if ((String)Device["supportsSelectFollowingTable"] == "false" && writer.CachedEndTag == "table") { writer.Write(" "); } ConditionalEnterStyle(writer, Style); writer.WriteBeginTag ("select"); if (Control.SelectType == ListSelectType.MultiSelectListBox) { writer.WriteAttribute ("multiple", "multiple"); } if (Control.SelectType == ListSelectType.ListBox || Control.SelectType == ListSelectType.MultiSelectListBox) { writer.WriteAttribute ("size", Control.Rows.ToString(CultureInfo.InvariantCulture)); } writer.WriteAttribute ("name", Control.UniqueID); ConditionalRenderClassAttribute(writer); writer.Write (">"); for (int itemIndex = 0; itemIndex < Control.Items.Count; itemIndex++) { MobileListItem item = Control.Items[itemIndex]; writer.WriteBeginTag ("option"); WriteItemValueAttribute (writer, itemIndex, item.Value); if (item.Selected && (Control.IsMultiSelect || itemIndex == Control.SelectedIndex)) { writer.Write (" selected=\"selected\">"); } else { writer.Write (">"); } writer.WriteEncodedText (item.Text); writer.WriteLine (""); } ConditionalSetPendingBreak(writer); writer.WriteEndTag ("select"); writer.WriteLine (); ConditionalPopPhysicalCssClass(writer); ConditionalExitStyle(writer, Style); } private void WriteItemValueAttribute (XhtmlMobileTextWriter writer, int index, String value) { String controlFormAction = Control.Form.Action; if (controlFormAction == null || controlFormAction.Length == 0) { writer.WriteAttribute ("value", index.ToString(CultureInfo.InvariantCulture)); } else { writer.WriteAttribute ("value", value, true /*encode*/); } } ///protected override void RenderAsHiddenInputField(XhtmlMobileTextWriter writer) { // Optimization - if viewstate is enabled for this control, and the // postback returns to this page, we just let it do the trick. // One catch though - if the control is multiselect, it always // interprets return values, so we do need to write out. if (Control.IsMultiSelect || Control.Form.Action.Length > 0 || !IsViewStateEnabled()) { String uniqueID = Control.UniqueID; MobileListItemCollection items = Control.Items; for (int i = 0; i < items.Count; i++) { if (items[i].Selected) { writer.WriteHiddenField(uniqueID, i.ToString(CultureInfo.InvariantCulture)); } } } } private bool IsViewStateEnabled() { Control ctl = Control; while (ctl != null) { if (!ctl.EnableViewState) { return false; } ctl = ctl.Parent; } return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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