private void SetButtonContent(RedwoodRequestContext context, LinkButton button, string text, ITemplate contentTemplate)
{
if (contentTemplate != null)
{
contentTemplate.BuildContent(context, button);
}
else
{
button.Text = text;
}
}
protected override void RenderContents(IHtmlWriter writer, RenderContext context)
{
writer.AddKnockoutDataBind("css", "{ 'disabled': IsFirstPage() }");
firstLi.Render(writer, context);
writer.AddKnockoutDataBind("css", "{ 'disabled': IsFirstPage() }");
previousLi.Render(writer, context);
// render template
writer.WriteKnockoutDataBindComment("foreach", "NearPageIndexes");
context.PathFragments.Push("NearPageIndexes[$index]");
// render page number
numbersPlaceholder.Children.Clear();
HtmlGenericControl li;
if (!RenderLinkForCurrentPage)
{
writer.AddKnockoutDataBind("visible", "$data == $parent.PageIndex()");
li = new HtmlGenericControl("li");
li.SetValue(Internal.IsDataContextBoundaryProperty, true);
var literal = new Literal();
literal.SetBinding(Literal.TextProperty, new ValueBindingExpression("_this + 1"));
li.Children.Add(literal);
numbersPlaceholder.Children.Add(li);
li.Render(writer, context);
writer.AddKnockoutDataBind("visible", "$data != $parent.PageIndex()");
}
writer.AddKnockoutDataBind("css", "{ 'active': $data == $parent.PageIndex()}");
li = new HtmlGenericControl("li");
li.SetValue(Internal.IsDataContextBoundaryProperty, true);
var link = new LinkButton();
link.SetBinding(ButtonBase.TextProperty, new ValueBindingExpression("_this + 1"));
link.SetBinding(ButtonBase.ClickProperty, new CommandBindingExpression("_parent.GoToPage(_this)"));
li.Children.Add(link);
numbersPlaceholder.Children.Add(li);
li.Render(writer, context);
context.PathFragments.Pop();
writer.WriteKnockoutDataBindEndComment();
writer.AddKnockoutDataBind("css", "{ 'disabled': IsLastPage() }");
nextLi.Render(writer, context);
writer.AddKnockoutDataBind("css", "{ 'disabled': IsLastPage() }");
lastLi.Render(writer, context);
}
private void DataBind(RedwoodRequestContext context)
{
Children.Clear();
content = new HtmlGenericControl("ul");
content.SetBinding(DataContextProperty, GetDataSetBinding().Clone());
Children.Add(content);
var dataSet = DataSet;
if (dataSet != null)
{
// first button
firstLi = new HtmlGenericControl("li");
var firstLink = new LinkButton();
SetButtonContent(context, firstLink, "««", FirstPageTemplate);
firstLink.SetBinding(ButtonBase.ClickProperty, new CommandBindingExpression("GoToFirstPage()"));
firstLi.Children.Add(firstLink);
content.Children.Add(firstLi);
// previous button
previousLi = new HtmlGenericControl("li");
var previousLink = new LinkButton();
SetButtonContent(context, previousLink, "«", PreviousPageTemplate);
previousLink.SetBinding(ButtonBase.ClickProperty, new CommandBindingExpression("GoToPreviousPage()"));
previousLi.Children.Add(previousLink);
content.Children.Add(previousLi);
// number fields
numbersPlaceholder = new Placeholder();
content.Children.Add(numbersPlaceholder);
var i = 0;
foreach (var number in dataSet.NearPageIndexes)
{
var li = new HtmlGenericControl("li");
li.SetBinding(DataContextProperty, new ValueBindingExpression("NearPageIndexes[" + i + "]"));
if (number == dataSet.PageIndex)
{
li.Attributes["class"] = "active";
}
var link = new LinkButton() { Text = (number + 1).ToString() };
link.SetBinding(ButtonBase.ClickProperty, new CommandBindingExpression("_parent.GoToPage(_this)"));
li.Children.Add(link);
numbersPlaceholder.Children.Add(li);
i++;
}
// next button
nextLi = new HtmlGenericControl("li");
var nextLink = new LinkButton();
SetButtonContent(context, nextLink, "»", NextPageTemplate);
nextLink.SetBinding(ButtonBase.ClickProperty, new CommandBindingExpression("GoToNextPage()"));
nextLi.Children.Add(nextLink);
content.Children.Add(nextLi);
// last button
lastLi = new HtmlGenericControl("li");
var lastLink = new LinkButton();
SetButtonContent(context, lastLink, "»»", LastPageTemplate);
lastLink.SetBinding(ButtonBase.ClickProperty, new CommandBindingExpression("GoToLastPage()"));
lastLi.Children.Add(lastLink);
content.Children.Add(lastLi);
}
}
public virtual void CreateHeaderControls(RedwoodRequestContext context, GridView gridView, string sortCommandPath, HtmlGenericControl cell)
{
if (AllowSorting)
{
if (string.IsNullOrEmpty(sortCommandPath))
{
throw new Exception("Cannot use column sorting where no sort command is specified. Either put IGridViewDataSet in the DataSource property of the GridView, or set the SortChanged command on the GridView to implement custom sorting logic!");
}
var sortExpression = GetSortExpression();
// TODO: verify that sortExpression is a single property name
var linkButton = new LinkButton() { Text = HeaderText };
linkButton.SetBinding(ButtonBase.ClickProperty, new CommandBindingExpression(string.Format("{0} (\"{1}\")", sortCommandPath, sortExpression)));
cell.Children.Add(linkButton);
}
else
{
var literal = new Literal(HeaderText);
cell.Children.Add(literal);
}
}