/// <include file='doc\XhtmlBasicListAdapter.uex' path='docs/doc[@for="XhtmlListAdapter.RenderList"]/*' />
protected virtual void RenderList(XhtmlMobileTextWriter writer)
{
MobileListItemCollection items = Control.Items;
if (items.Count == 0)
{
return;
}
ListDecoration decoration = Control.Decoration;
// Review: Consider replacing switch.
switch (decoration)
{
case ListDecoration.Bulleted:
RenderBulletedList(writer);
break;
case ListDecoration.Numbered:
RenderNumberedList(writer);
break;
default:
if (!Device.Tables)
{
RenderUndecoratedList(writer);
return;
}
RenderTableList(writer);
break;
}
}
public override void OnPreRender(EventArgs e)
{
int firstSelectedIndex;
MobileListItemCollection items = Control.Items;
int count = items.Count;
for (firstSelectedIndex = 0; firstSelectedIndex < count; firstSelectedIndex++)
{
if (items[firstSelectedIndex].Selected)
{
break;
}
}
if (firstSelectedIndex < count)
{
StringBuilder ivalue = new StringBuilder();
ivalue.Append((firstSelectedIndex + 1).ToString());
if (Control.IsMultiSelect)
{
for (int i = firstSelectedIndex + 1; i < count; i++)
{
if (items[i].Selected)
{
ivalue.Append(";");
ivalue.Append((i + 1).ToString());
}
}
}
_ivalue = ivalue.ToString();
}
else
{
String defaultValue = null;
if (!Control.IsMultiSelect)
{
// 1 is the first index of a single selection list
defaultValue = "1";
}
else if (Device.CanRenderSetvarZeroWithMultiSelectionList)
{
// 0 means no items have been selected, for MultiSelect case
defaultValue = "0";
}
if (defaultValue != null)
{
_ivalue = defaultValue;
}
}
}
public override void Render(WmlMobileTextWriter writer)
{
MobileListItemCollection items = Control.Items;
int count = items.Count;
if (count == 0)
{
return;
}
writer.EnterLayout(Style);
bool crossPagePost = Control.Form.Action != String.Empty;
if (crossPagePost)
{
if (_ivalue != null)
{
String formVariable = ClientPrefix + Control.ClientID;
writer.AddFormVariable(formVariable, _ivalue, false);
// does not render _ivalue if null or form variables written.
writer.RenderBeginSelect(Control.ClientID, formVariable, _ivalue, Control.Title, Control.IsMultiSelect);
}
else // _ivalue == null
{
writer.RenderBeginSelect(Control.ClientID, null, null, Control.Title, Control.IsMultiSelect);
}
}
else // !crossPagePost
{
if (_ivalue != null)
{
writer.AddFormVariable(Control.ClientID, _ivalue, false);
}
// does not render _ivalue if null or form variables written.
writer.RenderBeginSelect(null, Control.ClientID, _ivalue, Control.Title, Control.IsMultiSelect);
}
foreach (MobileListItem item in items)
{
if (crossPagePost)
{
writer.RenderSelectOption(item.Text, item.Value);
}
else
{
writer.RenderSelectOption(item.Text);
}
}
writer.RenderEndSelect(Control.BreakAfter);
writer.ExitLayout(Style);
}
/// <include file='doc\WmlListAdapter.uex' path='docs/doc[@for="WmlListAdapter.Render"]/*' />
public override void Render(WmlMobileTextWriter writer)
{
if (Control.HasControls())
{
writer.BeginCustomMarkup();
RenderChildren(writer);
writer.EndCustomMarkup();
return;
}
int pageStart = Control.FirstVisibleItemIndex;
int pageSize = Control.VisibleItemCount;
if (pageSize == 0)
{
return;
}
MobileListItemCollection items = Control.Items;
if (items.Count == 0)
{
return;
}
bool itemsAsLinks = Control.ItemsAsLinks;
bool hasCmdHandler = Control.HasItemCommandHandler;
writer.EnterStyle(Style);
for (int i = 0; i < pageSize; i++)
{
MobileListItem item = items[pageStart + i];
if (itemsAsLinks)
{
RenderLink(writer, item.Value, null, false, false, item.Text, true);
}
else if (hasCmdHandler)
{
RenderPostBackEvent(writer, item.Index.ToString(CultureInfo.InvariantCulture), null, true, item.Text, true);
}
else
{
writer.RenderText(item.Text, true);
}
}
writer.ExitStyle(Style);
}
/// <include file='doc\HtmlSelectionListAdapter.uex' path='docs/doc[@for="HtmlSelectionListAdapter.RenderAsHiddenInputField"]/*' />
protected override void RenderAsHiddenInputField(HtmlMobileTextWriter 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));
}
}
}
}
/// <include file='doc\HtmlListAdapter.uex' path='docs/doc[@for="HtmlListAdapter.RenderList"]/*' />
protected virtual void RenderList(HtmlMobileTextWriter writer)
{
MobileListItemCollection items = Control.Items;
Wrapping wrap = Style.Wrapping; // used for tables, no decoration case.
if (items.Count == 0)
{
return;
}
int pageStart = Control.FirstVisibleItemIndex;
int pageSize = Control.VisibleItemCount;
// Determine what markup to use.
String listSuffix, itemPrefix, itemSuffix;
ListDecoration decoration = Control.Decoration;
bool insideStyle = true;
// We know that for table tag, outer style doesn't carry over
// into inside tags so style state needs to be reset.
// For other cases, we enter the style here once and exit at the
// end once.
if (decoration != ListDecoration.None || !Device.Tables)
{
writer.EnterStyle(Style);
insideStyle = false;
}
switch (decoration)
{
case ListDecoration.Bulleted:
writer.WriteLine("<ul>");
listSuffix = "</ul>";
itemPrefix = "<li>";
itemSuffix = "</li>";
if (!Device.RendersBreaksAfterHtmlLists)
{
listSuffix += "<br>";
}
break;
case ListDecoration.Numbered:
if (pageStart == 0)
{
writer.WriteLine("<ol>");
}
else
{
writer.Write("<ol start=\"");
writer.Write(pageStart + 1);
writer.WriteLine("\">");
}
listSuffix = "</ol>";
itemPrefix = "<li>";
itemSuffix = "</li>";
if (!Device.RendersBreaksAfterHtmlLists)
{
listSuffix += "<br>";
}
break;
default:
if (Device.Tables)
{
listSuffix = "</table>";
Style.Wrapping = Wrapping.NotSet;
writer.EnterLayout(Style);
writer.WriteLine("<table>");
if (wrap == Wrapping.NoWrap)
{
itemPrefix = "<tr nowrap><td>";
}
else
{
itemPrefix = "<tr><td>";
}
itemSuffix = "</td></tr>";
}
else
{
listSuffix = String.Empty;
itemPrefix = String.Empty;
itemSuffix = "<br>";
}
break;
}
bool hasCmdHandler = Control.HasItemCommandHandler;
for (int i = 0; i < pageSize; i++)
{
MobileListItem item = items[pageStart + i];
writer.Write(itemPrefix);
if (insideStyle)
{
writer.BeginStyleContext();
writer.EnterFormat(Style);
}
if (Control.ItemsAsLinks)
{
RenderBeginLink(writer, item.Value);
}
else if (hasCmdHandler)
{
writer.WriteBeginTag("a");
RenderPostBackEventAsAttribute(writer, "href", item.Index.ToString(CultureInfo.InvariantCulture));
writer.Write(">");
}
writer.WriteEncodedText(item.Text);
if (hasCmdHandler || Control.ItemsAsLinks)
{
RenderEndLink(writer);
}
if (insideStyle)
{
writer.ExitFormat(Style);
writer.EndStyleContext();
}
writer.WriteLine(itemSuffix);
}
if (listSuffix == null || listSuffix.Length > 0)
{
writer.WriteLine(listSuffix);
}
if (decoration != ListDecoration.None || !Device.Tables)
{
writer.ExitStyle(Style);
}
else
{
writer.ExitLayout(Style);
Style.Wrapping = wrap;
}
}
/// <include file='doc\HtmlSelectionListAdapter.uex' path='docs/doc[@for="HtmlSelectionListAdapter.Render"]/*' />
public override void Render(HtmlMobileTextWriter writer)
{
MobileListItemCollection items = Control.Items;
ListSelectType selectType = Control.SelectType;
if (items.Count == 0 &&
selectType != ListSelectType.ListBox &&
selectType != ListSelectType.MultiSelectListBox)
{
return;
}
int selectedIndex = Control.SelectedIndex;
String renderName;
if (Device.RequiresAttributeColonSubstitution)
{
renderName = Control.UniqueID.Replace(':', ',');
}
else
{
renderName = Control.UniqueID;
}
switch (selectType)
{
case ListSelectType.DropDown:
case ListSelectType.ListBox:
case ListSelectType.MultiSelectListBox:
if (items.Count == 0 && !Device.CanRenderEmptySelects)
{
break;
}
writer.EnterLayout(Style);
writer.WriteBeginTag("select");
if (selectType == ListSelectType.MultiSelectListBox)
{
writer.Write(" multiple");
}
if (selectType == ListSelectType.ListBox || selectType == ListSelectType.MultiSelectListBox)
{
writer.WriteAttribute("size", Control.Rows.ToString(CultureInfo.InvariantCulture));
}
writer.WriteAttribute("name", renderName);
writer.Write(">");
for (int itemIndex = 0; itemIndex < items.Count; itemIndex++)
{
MobileListItem item = items[itemIndex];
writer.WriteBeginTag("option");
WriteItemValueAttribute(writer, itemIndex, item.Value);
if (item.Selected && (Control.IsMultiSelect || itemIndex == selectedIndex))
{
writer.Write(" selected>");
}
else
{
writer.Write(">");
}
writer.WriteEncodedText(item.Text);
writer.WriteLine("");
}
writer.Write("</select>");
if (Device.HidesRightAlignedMultiselectScrollbars &&
selectType == ListSelectType.MultiSelectListBox)
{
// nested if for perf
if ((Alignment)Style[Style.AlignmentKey, true] == Alignment.Right)
{
writer.Write(" ");
}
}
writer.WriteLine("");
if (!Page.DesignMode)
{
writer.ExitLayout(Style, Control.BreakAfter);
}
else
{
writer.ExitLayout(Style, false);
}
break;
case ListSelectType.Radio:
case ListSelectType.CheckBox:
String selectTypeString =
(selectType == ListSelectType.Radio) ?
"radio" :
"checkbox";
Alignment alignment = (Alignment)Style[Style.AlignmentKey, true];
if (!Device.Tables || alignment == Alignment.Left || alignment == Alignment.NotSet)
{
writer.EnterStyle(Style);
bool breakAfter = false;
for (int itemIndex = 0; itemIndex < items.Count; itemIndex++)
{
if (breakAfter)
{
writer.WriteBreak();
}
MobileListItem item = items[itemIndex];
writer.WriteBeginTag("input");
writer.WriteAttribute("type", selectTypeString);
writer.WriteAttribute("name", renderName);
WriteItemValueAttribute(writer, itemIndex, item.Value);
if (item.Selected &&
(Control.IsMultiSelect || itemIndex == selectedIndex) &&
Device.SupportsUncheck)
{
writer.Write(" checked>");
}
else
{
writer.Write(">");
}
writer.WriteEncodedText(item.Text);
breakAfter = true;
}
writer.ExitStyle(Style, Control.BreakAfter);
}
else // Device supports tables and alignment is non default.
{
Wrapping wrapping = (Wrapping)Style[Style.WrappingKey, true];
bool nowrap = (wrapping == Wrapping.NoWrap);
writer.EnterLayout(Style);
writer.WriteFullBeginTag("table");
writer.BeginStyleContext();
for (int itemIndex = 0; itemIndex < items.Count; itemIndex++)
{
MobileListItem item = items[itemIndex];
writer.WriteFullBeginTag("tr");
writer.WriteBeginTag("td");
if (nowrap)
{
writer.WriteAttribute("nowrap", "true");
}
writer.Write(">");
writer.WriteBeginTag("input");
writer.WriteAttribute("type", selectTypeString);
writer.WriteAttribute("name", renderName);
WriteItemValueAttribute(writer, itemIndex, item.Value);
if (item.Selected &&
(Control.IsMultiSelect || itemIndex == selectedIndex) &&
Device.SupportsUncheck)
{
writer.Write(" checked>");
}
else
{
writer.Write(">");
}
writer.MarkStyleContext();
writer.EnterFormat(Style);
writer.WriteEncodedText(item.Text);
writer.ExitFormat(Style);
writer.UnMarkStyleContext();
writer.WriteEndTag("td");
writer.WriteEndTag("tr");
}
writer.WriteEndTag("table");
writer.EndStyleContext();
writer.ExitFormat(Style, Control.BreakAfter);
}
break;
}
}
/// <include file='doc\ChtmlSelectionListAdapter.uex' path='docs/doc[@for="ChtmlSelectionListAdapter.Render"]/*' />
public override void Render(HtmlMobileTextWriter writer)
{
ListSelectType selectType = Control.SelectType;
if (selectType == ListSelectType.MultiSelectListBox &&
Device.SupportsSelectMultiple == false)
{
// Render occurs after SaveViewState. Here we make a temp
// change which is not persisted to the view state.
Control.SelectType = selectType = ListSelectType.CheckBox;
}
if (!Device.RequiresUniqueHtmlCheckboxNames ||
selectType != ListSelectType.CheckBox)
{
base.Render(writer);
}
else
{
MobileListItemCollection items = Control.Items;
if (items.Count == 0)
{
return;
}
writer.EnterStyle(Style);
bool writeBreak = false;
foreach (MobileListItem item in items)
{
int index = items.IndexOf(item);
if (writeBreak)
{
writer.WriteBreak();
}
writer.Write("<input type=\"checkbox\" name=\"");
if (Device.RequiresAttributeColonSubstitution)
{
writer.Write(Control.UniqueID.Replace(':', ','));
}
else
{
writer.Write(Control.UniqueID);
}
writer.Write(Constants.SelectionListSpecialCharacter);
writer.Write(index);
writer.Write("\" value=\"");
if (!String.IsNullOrEmpty(Control.Form.Action))
{
writer.WriteEncodedText(item.Value);
}
else
{
writer.Write(item.Index.ToString(CultureInfo.InvariantCulture));
}
if (item.Selected &&
Device.SupportsUncheck)
{
writer.Write("\" checked>");
}
else
{
writer.Write("\">");
}
writer.WriteText(item.Text, true);
writeBreak = true;
}
writer.ExitStyle(Style, Control.BreakAfter);
}
}
/// <summary>
/// <para>
/// Gets the HTML to be used for the design-time representation
/// of the control.
/// </para>
/// </summary>
/// <returns>
/// <para>
/// The design-time HTML.
/// </para>
/// </returns>
protected override String GetDesignTimeNormalHtml()
{
const int numberOfStaticItems = 5;
IEnumerable selectedDataSource = null;
String oldDataTextField = null, oldDataValueField = null;
bool dummyDataSource = false;
DesignerTextWriter htmlWriter = new DesignerTextWriter(true);
MobileListItemCollection items = _selectionList.Items;
Debug.Assert(items != null, "Items is null in LisControl");
if (items.Count > 0)
{
_selectionList.Adapter.Render(htmlWriter);
}
else
{
MobileListItem[] oldItems = items.GetAll();
int sampleRows = numberOfStaticItems;
// try designtime databinding.
selectedDataSource = GetResolvedSelectedDataSource();
IEnumerable designTimeDataSource =
GetDesignTimeDataSource(
selectedDataSource,
sampleRows,
out dummyDataSource);
// If dummy datasource is applied, change the data fields so that
// dummy source will be rendered.
if (dummyDataSource)
{
oldDataTextField = _selectionList.DataTextField;
oldDataValueField = _selectionList.DataValueField;
_selectionList.DataTextField = "Column0";
_selectionList.DataValueField = "Column1";
}
try
{
_selectionList.DataSource = designTimeDataSource;
_selectionList.DataBind();
_selectionList.Adapter.Render(htmlWriter);
}
finally
{
_selectionList.DataSource = null;
_selectionList.Items.SetAll(oldItems);
if (dummyDataSource)
{
_selectionList.DataTextField = oldDataTextField;
_selectionList.DataValueField = oldDataValueField;
}
}
}
return(htmlWriter.ToString());
}
/// <summary>
/// <para>
/// Gets the HTML to be used for the design-time representation
/// of the control.
/// </para>
/// </summary>
/// <returns>
/// <para>
/// The design-time HTML.
/// </para>
/// </returns>
/// <remarks>
/// <para>
/// The rule for handing DesignTimeHTML is similar to System.Web.UI.DataList control,
/// if list has a HTML templateset, then generate sample data from static data or
/// dynamic data (if static data does not exist). Show the sample data with templates
/// applied.
/// </para>
/// </remarks>
protected override String GetDesignTimeNormalHtml()
{
IEnumerable selectedDataSource = null;
String oldDataTextField = null, oldDataValueField = null;
bool dummyDataSource = false;
DesignerTextWriter writer = new DesignerTextWriter(true);
// Apply the current device specific
if (_list.DeviceSpecific != null)
{
_list.DeviceSpecific.SetDesignerChoice(CurrentChoice);
}
MobileListItemCollection items = _list.Items;
Debug.Assert(items != null, "Items is null in LisControl");
MobileListItem[] oldItems = items.GetAll();
// Hack: If List is templated, use DataBind() to create child controls.
// If it is empty, use dummy data source to create fake child controls.
if (_list.IsTemplated || items.Count == 0)
{
int sampleRows = items.Count;
// If List does not contain any items, use five dummy items.
if (sampleRows == 0)
{
sampleRows = 5;
}
// try designtime databinding.
selectedDataSource = GetResolvedSelectedDataSource();
// Recreate the dummy data table, if number of items changed. BUG from webforms
if (sampleRows != _numberItems)
{
OnDummyDataTableChanged();
// keep the new item count
_numberItems = sampleRows;
}
IEnumerable designTimeDataSource =
GetDesignTimeDataSource(selectedDataSource, sampleRows, out dummyDataSource);
// If dummy datasource is applied, change the data fields so that
// dummy source will be rendered.
if (dummyDataSource)
{
oldDataTextField = _list.DataTextField;
oldDataValueField = _list.DataValueField;
_list.DataTextField = "Column0";
_list.DataValueField = "Column1";
}
try
{
_list.DataSource = designTimeDataSource;
_list.DataBind();
_list.Adapter.Render(writer);
}
finally
{
_list.DataSource = null;
// restore the old items since databinding creates items from templates.
_list.Items.SetAll(oldItems);
// clear all child controls created by databinding.
_list.Controls.Clear();
if (dummyDataSource)
{
_list.DataTextField = oldDataTextField;
_list.DataValueField = oldDataValueField;
}
}
}
// Otherwise, list only contains static items, just render it directly.
else
{
_list.Adapter.Render(writer);
}
return(writer.ToString());
}
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("<br/>");
}
if (Device.Tables)
{
writer.WriteEndTag("tr");
}
}
RenderClosingListTag(writer, wrappingTag);
ConditionalExitLayout(writer, Style);
}
