public virtual void CreateHeaderControls(IDotvvmRequestContext context, GridView gridView, Action<string> sortCommand, HtmlGenericControl cell, IGridViewDataSet gridViewDataSet)
{
if (HeaderTemplate != null)
{
HeaderTemplate.BuildContent(context, cell);
return;
}
if (AllowSorting)
{
if (sortCommand == null)
{
throw new DotvvmControlException(this, "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();
var linkButton = new LinkButton();
linkButton.SetValue(LinkButton.TextProperty, GetValueRaw(HeaderTextProperty));
cell.Children.Add(linkButton);
var bindingId = linkButton.GetValue(Internal.UniqueIDProperty) + "_sortBinding";
var binding = new CommandBindingExpression(h => sortCommand(sortExpression), bindingId);
linkButton.SetBinding(ButtonBase.ClickProperty, binding);
SetSortedCssClass(cell, gridViewDataSet);
}
else
{
var literal = new Literal();
literal.SetValue(Literal.TextProperty, GetValueRaw(HeaderTextProperty));
cell.Children.Add(literal);
}
}
private void SetButtonContent(Hosting.IDotvvmRequestContext context, LinkButton button, string text, ITemplate contentTemplate)
{
if (contentTemplate != null)
{
contentTemplate.BuildContent(context, button);
}
else
{
button.Text = text;
}
}
protected override void RenderContents(IHtmlWriter writer, IDotvvmRequestContext context)
{
writer.AddKnockoutDataBind("css", "{ 'disabled': IsFirstPage() }");
firstLi.Render(writer, context);
writer.AddKnockoutDataBind("css", "{ 'disabled': IsFirstPage() }");
previousLi.Render(writer, context);
// render template
writer.WriteKnockoutForeachComment("NearPageIndexes");
// render page number
numbersPlaceHolder.Children.Clear();
HtmlGenericControl li;
if (!RenderLinkForCurrentPage)
{
writer.AddKnockoutDataBind("visible", "$data == $parent.PageIndex()");
writer.AddKnockoutDataBind("css", "{'active': $data == $parent.PageIndex()}");
li = new HtmlGenericControl("li");
var literal = new Literal();
literal.DataContext = 0;
literal.SetBinding(Literal.TextProperty, new ValueBindingExpression(vm => ((int)vm[0] + 1).ToString(), "$data + 1"));
li.Children.Add(literal);
numbersPlaceHolder.Children.Add(li);
li.Render(writer, context);
writer.AddKnockoutDataBind("visible", "$data != $parent.PageIndex()");
}
writer.AddKnockoutDataBind("css", "{ 'active': $data == $parent.PageIndex()}");
li = new HtmlGenericControl("li");
li.SetValue(Internal.PathFragmentProperty, "NearPageIndexes[$index]");
var link = new LinkButton();
li.Children.Add(link);
link.SetBinding(ButtonBase.TextProperty, new ValueBindingExpression(vm => ((int)vm[0] + 1).ToString(), "$data + 1"));
link.SetBinding(ButtonBase.ClickProperty, GoToThisPageCommand);
object enabledValue = HasValueBinding(EnabledProperty) ? (object)new ValueBindingExpression(h => GetValueBinding(EnabledProperty).Evaluate(this, EnabledProperty), "$pagerEnabled") : Enabled;
if (!true.Equals(enabledValue)) link.SetValue(LinkButton.EnabledProperty, enabledValue);
numbersPlaceHolder.Children.Add(li);
li.Render(writer, context);
writer.WriteKnockoutDataBindEndComment();
writer.AddKnockoutDataBind("css", "{ 'disabled': IsLastPage() }");
nextLi.Render(writer, context);
writer.AddKnockoutDataBind("css", "{ 'disabled': IsLastPage() }");
lastLi.Render(writer, context);
}
private void DataBind(Hosting.IDotvvmRequestContext context)
{
Children.Clear();
content = new HtmlGenericControl("ul");
content.SetBinding(DataContextProperty, GetDataSetBinding());
Children.Add(content);
var dataSet = DataSet;
if (dataSet != null)
{
object enabledValue = HasValueBinding(EnabledProperty) ? (object)new ValueBindingExpression(h => GetValueBinding(EnabledProperty).Evaluate(this, EnabledProperty), "$pagerEnabled") : Enabled;
// first button
firstLi = new HtmlGenericControl("li");
var firstLink = new LinkButton();
SetButtonContent(context, firstLink, "««", FirstPageTemplate);
firstLink.SetBinding(ButtonBase.ClickProperty, GoToFirstPageCommand);
if (!true.Equals(enabledValue)) firstLink.SetValue(LinkButton.EnabledProperty, enabledValue);
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, GoToPrevPageCommand);
if (!true.Equals(enabledValue)) previousLink.SetValue(LinkButton.EnabledProperty, enabledValue);
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, GetNearIndexesBinding(i));
if (number == dataSet.PageIndex)
{
li.Attributes["class"] = "active";
}
var link = new LinkButton() { Text = (number + 1).ToString() };
link.SetBinding(ButtonBase.ClickProperty, GoToThisPageCommand);
if (!true.Equals(enabledValue)) link.SetValue(LinkButton.EnabledProperty, enabledValue);
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, GoToNextPageCommand);
if (!true.Equals(enabledValue)) nextLink.SetValue(LinkButton.EnabledProperty, enabledValue);
nextLi.Children.Add(nextLink);
content.Children.Add(nextLi);
// last button
lastLi = new HtmlGenericControl("li");
var lastLink = new LinkButton();
SetButtonContent(context, lastLink, "»»", LastPageTemplate);
if (!true.Equals(enabledValue)) lastLink.SetValue(LinkButton.EnabledProperty, enabledValue);
lastLink.SetBinding(ButtonBase.ClickProperty, GoToLastPageCommand);
lastLi.Children.Add(lastLink);
content.Children.Add(lastLi);
}
}
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.WriteKnockoutForeachComment("NearPageIndexes");
// render page number
numbersPlaceholder.Children.Clear();
HtmlGenericControl li;
if (!RenderLinkForCurrentPage)
{
writer.AddKnockoutDataBind("visible", "$data == $parent.PageIndex()");
li = new HtmlGenericControl("li");
var literal = new Literal();
literal.SetBinding(Literal.TextProperty, new ValueBindingExpression(vm => (int)vm[0] + 1, "$data + 1"));
li.Children.Add(literal);
numbersPlaceholder.Children.Add(li);
li.Render(writer, context);
writer.AddKnockoutDataBind("visible", "$data != $parent.PageIndex()");
}
writer.AddKnockoutDataBind("css", "{ 'active': $data == $parent.PageIndex()}");
li = new HtmlGenericControl("li");
li.SetValue(Internal.PathFragmentProperty, "NearPageIndexes[$index]");
var link = new LinkButton();
li.Children.Add(link);
link.SetBinding(ButtonBase.TextProperty, new ValueBindingExpression(vm => (int)vm[0] + 1, "$data + 1"));
link.SetBinding(ButtonBase.ClickProperty, GoToThisPageCommand);
numbersPlaceholder.Children.Add(li);
li.Render(writer, context);
writer.WriteKnockoutDataBindEndComment();
writer.AddKnockoutDataBind("css", "{ 'disabled': IsLastPage() }");
nextLi.Render(writer, context);
writer.AddKnockoutDataBind("css", "{ 'disabled': IsLastPage() }");
lastLi.Render(writer, context);
}
private void DataBind(DotvvmRequestContext context)
{
Children.Clear();
content = new HtmlGenericControl("ul");
content.SetBinding(DataContextProperty, GetDataSetBinding());
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, GoToFirstPageCommand);
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, GoToPrevPageCommand);
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, GetNearIndexesBinding(i));
if (number == dataSet.PageIndex)
{
li.Attributes["class"] = "active";
}
var link = new LinkButton() { Text = (number + 1).ToString() };
link.SetBinding(ButtonBase.ClickProperty, GoToThisPageCommand);
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, GoToNextPageCommand);
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, GoToLastPageCommand);
lastLi.Children.Add(lastLink);
content.Children.Add(lastLi);
}
}
private void DataBind(Hosting.IDotvvmRequestContext context)
{
Children.Clear();
content = new HtmlGenericControl("ul");
content.SetBinding(DataContextProperty, GetDataSetBinding());
Children.Add(content);
var dataSet = DataSet;
if (dataSet != null)
{
object enabledValue = HasValueBinding(EnabledProperty) ? (object)new ValueBindingExpression(h => GetValueBinding(EnabledProperty).Evaluate(this, EnabledProperty), "$pagerEnabled") : Enabled;
// first button
firstLi = new HtmlGenericControl("li");
var firstLink = new LinkButton();
SetButtonContent(context, firstLink, "««", FirstPageTemplate);
firstLink.SetBinding(ButtonBase.ClickProperty, GoToFirstPageCommand);
if (!true.Equals(enabledValue))
{
firstLink.SetValue(LinkButton.EnabledProperty, enabledValue);
}
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, GoToPrevPageCommand);
if (!true.Equals(enabledValue))
{
previousLink.SetValue(LinkButton.EnabledProperty, enabledValue);
}
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, GetNearIndexesBinding(i));
if (number == dataSet.PageIndex)
{
li.Attributes["class"] = "active";
}
var link = new LinkButton()
{
Text = (number + 1).ToString()
};
link.SetBinding(ButtonBase.ClickProperty, GoToThisPageCommand);
if (!true.Equals(enabledValue))
{
link.SetValue(LinkButton.EnabledProperty, enabledValue);
}
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, GoToNextPageCommand);
if (!true.Equals(enabledValue))
{
nextLink.SetValue(LinkButton.EnabledProperty, enabledValue);
}
nextLi.Children.Add(nextLink);
content.Children.Add(nextLi);
// last button
lastLi = new HtmlGenericControl("li");
var lastLink = new LinkButton();
SetButtonContent(context, lastLink, "»»", LastPageTemplate);
if (!true.Equals(enabledValue))
{
lastLink.SetValue(LinkButton.EnabledProperty, enabledValue);
}
lastLink.SetBinding(ButtonBase.ClickProperty, GoToLastPageCommand);
lastLi.Children.Add(lastLink);
content.Children.Add(lastLi);
}
}
public virtual void CreateHeaderControls(DotvvmRequestContext context, GridView gridView, Action<string> sortCommand, HtmlGenericControl cell)
{
if (AllowSorting)
{
if (sortCommand == null)
{
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();
var linkButton = new LinkButton() { Text = HeaderText };
cell.Children.Add(linkButton);
var bindingId = linkButton.GetValue(Internal.UniqueIDProperty) + "_sortBinding";
var binding = new CommandBindingExpression((o, i) => { sortCommand(sortExpression); return null; }, bindingId);
linkButton.SetBinding(ButtonBase.ClickProperty, binding);
}
else
{
var literal = new Literal(HeaderText);
cell.Children.Add(literal);
}
}