private bool TouchProperty(DotvvmProperty prop, object?value, ref RenderState r)
{
if (prop == TextProperty)
{
r.Text = value;
}
else if (prop == RenderSpanElementProperty)
{
r.RenderSpanElement = (bool)EvalPropertyValue(RenderSpanElementProperty, value) !;
}
#pragma warning disable CS0618
else if (prop == FormatStringProperty || prop == ValueTypeProperty)
#pragma warning restore CS0618
{
r.HasFormattingStuff = true;
}
else if (base.TouchProperty(prop, value, ref r.HtmlState))
{
}
else if (DotvvmControl.TouchProperty(prop, value, ref r.BaseState))
{
}
else
{
return(false);
}
return(true);
}
public static void AddKnockoutDataBind(this IHtmlWriter writer, string name, DotvvmControl control, DotvvmProperty property, Action nullBindingAction = null,
string valueUpdate = null, bool renderEvenInServerRenderingMode = false, bool setValueBack = false)
{
var expression = control.GetValueBinding(property);
if (expression != null && (!control.RenderOnServer || renderEvenInServerRenderingMode))
{
writer.AddAttribute("data-bind", name + ": " + expression.GetKnockoutBindingExpression(), true, ", ");
if (valueUpdate != null)
{
writer.AddAttribute("data-bind", "valueUpdate: '" + valueUpdate + "'", true, ", ");
}
}
else
{
if (nullBindingAction != null)
{
nullBindingAction();
}
if (setValueBack && expression != null)
{
control.SetValue(property, expression.Evaluate(control, property));
}
}
}
public void BuildContent(IDotvvmRequestContext context, DotvvmControl container)
{
var controlBuilderFactory = context.Configuration.ServiceLocator.GetService <IControlBuilderFactory>();
var control = BuildContentBody(controlBuilderFactory);
container.Children.Add(control);
}
protected bool TouchProperty(DotvvmProperty prop, object value, ref RenderState r)
{
if (prop == TextProperty)
{
r.Text = value;
}
else if (prop == RenderSpanElementProperty)
{
r.RenderSpanElement = (bool)EvalPropertyValue(RenderSpanElementProperty, value);
}
else if (prop == FormatStringProperty || prop == ValueTypeProperty)
{
r.HasFormattingStuff = true;
}
else if (base.TouchProperty(prop, value, ref r.HtmlState))
{
}
else if (DotvvmControl.TouchProperty(prop, value, ref r.BaseState))
{
}
else
{
return(false);
}
return(true);
}
public override void CreateEditControls(IDotvvmRequestContext context, DotvvmControl container)
{
if (EditTemplate == null)
{
throw new DotvvmControlException(this, "EditTemplate must be set, when editting is allowed in a GridView.");
}
EditTemplate.BuildContent(context, container);
}
public override void CreateEditControls(IDotvvmRequestContext context, DotvvmControl container)
{
var textBox = new TextBox();
textBox.SetBinding(TextBox.TextProperty, GetValueBinding(ValueBindingProperty));
container.Children.Add(textBox);
}
public override void CreateControls(IDotvvmRequestContext context, DotvvmControl container)
{
var literal = new Literal();
literal.FormatString = FormatString;
literal.SetBinding(Literal.TextProperty, GetValueBinding(ValueBindingProperty));
container.Children.Add(literal);
}
public override void CreateEditControls(IDotvvmRequestContext context, DotvvmControl container)
{
var checkBox = new CheckBox {
Enabled = true
};
checkBox.SetBinding(CheckableControlBase.CheckedProperty, GetValueBinding(ValueBindingProperty));
container.Children.Add(checkBox);
}
public override void CreateEditControls(IDotvvmRequestContext context, DotvvmControl container)
{
var textBox = new TextBox();
textBox.FormatString = FormatString;
textBox.ValueType = ValueType;
textBox.SetBinding(TextBox.TextProperty, ValueBinding);
container.Children.Add(textBox);
}
private void CreateControlsCore(DotvvmControl container, bool enabled)
{
var checkBox = new CheckBox {
Enabled = enabled
};
var valueBinding = GetValueBinding(ValueBindingProperty);
checkBox.SetBinding(CheckBox.CheckedProperty, valueBinding);
Validator.Place(checkBox, container.Children, valueBinding, ValidatorPlacement);
container.Children.Add(checkBox);
}
public override void CreateControls(IDotvvmRequestContext context, DotvvmControl container)
{
var literal = new Literal();
literal.FormatString = FormatString;
#pragma warning disable
literal.ValueType = ValueType;
#pragma warning restore
literal.SetBinding(Literal.TextProperty, ValueBinding);
Validator.Place(literal, container.Children, ValueBinding, ValidatorPlacement);
container.Children.Add(literal);
}
public virtual void Add(string name, DotvvmControl control, DotvvmProperty property, Action? nullBindingAction = null)
{
var binding = control.GetValueBinding(property);
if (binding == null)
{
if (nullBindingAction != null) nullBindingAction();
else Add(name, JsonConvert.SerializeObject(control.GetValue(property), DefaultViewModelSerializer.CreateDefaultSettings()));
}
else
{
entries.Add(new KnockoutBindingInfo(name, GetKnockoutBindingExpression(control, binding)));
}
}
public override void CreateEditControls(IDotvvmRequestContext context, DotvvmControl container)
{
var textBox = new TextBox();
textBox.FormatString = FormatString;
#pragma warning disable
textBox.ValueType = ValueType;
#pragma warning restore
textBox.SetBinding(TextBox.TextProperty, ValueBinding);
textBox.SetBinding(TextBox.ChangedProperty, ChangedBinding);
Validator.Place(textBox, container.Children, ValueBinding, ValidatorPlacement);
container.Children.Add(textBox);
}
public void Add(string name, DotvvmControl control, DotvvmProperty property, Action nullBindingAction)
{
var binding = control.GetValueBinding(property);
if (binding == null)
{
nullBindingAction();
}
else
{
entries.Add(new KnockoutBindingInfo()
{
Name = name, Expression = control.GetValueBinding(property).GetKnockoutBindingExpression()
});
}
}
/// <summary>
/// Finds the control by its unique ID.
/// </summary>
public DotvvmControl FindControlByUniqueId(string controlUniqueId)
{
var parts = controlUniqueId.Split('_');
DotvvmControl result = this;
for (var i = 0; i < parts.Length; i++)
{
result = result.GetAllDescendants(c => !IsNamingContainer(c))
.SingleOrDefault(c => c.GetValue(Internal.UniqueIDProperty).Equals(parts[i]));
if (result == null)
{
return(null);
}
}
return(result);
}
private void CreateRow(IDotvvmRequestContext context, DataItemContainer placeholder)
{
var row = new HtmlGenericControl("tr");
DotvvmControl container = row;
foreach (var decorator in RowDecorators)
{
var decoratorInstance = decorator.Clone();
decoratorInstance.Children.Add(container);
container = decoratorInstance;
}
placeholder.Children.Add(container);
var isEdit = false;
if (InlineEditing == true)
{
// if gridviewdataset is missing throw exception
if (!(DataSource is IGridViewDataSet))
{
throw new ArgumentException("You have to use GridViewDataSet with InlineEditing enabled.");
}
//checks if row is being edited
isEdit = IsEditedRow(placeholder);
}
// create cells
foreach (var column in Columns)
{
var cell = new HtmlGenericControl("td");
SetCellAttributes(column, cell, false);
row.Children.Add(cell);
if (isEdit && column.IsEditable)
{
column.CreateEditControls(context, cell);
}
else
{
column.CreateControls(context, cell);
}
}
}
private HtmlGenericControl CreateRow(DataItemContainer placeholder, bool isInEditMode)
{
var row = new HtmlGenericControl("tr");
DotvvmControl container = row;
var decorators = isInEditMode ? EditRowDecorators : RowDecorators;
if (decorators != null)
{
foreach (var decorator in decorators)
{
var decoratorInstance = decorator.Clone();
decoratorInstance.Children.Add(container);
container = decoratorInstance;
}
}
placeholder.Children.Add(container);
return(row);
}
/// <summary>
/// Generates a list of postback update handlers.
/// </summary>
private static string GetPostBackHandlersScript(DotvvmControl control, string eventName)
{
var handlers = (List <PostBackHandler>)control.GetValue(PostBack.HandlersProperty);
if (handlers == null)
{
return("null");
}
var effectiveHandlers = handlers.Where(h => string.IsNullOrEmpty(h.EventName) || h.EventName == eventName);
var sb = new StringBuilder();
sb.Append("[");
foreach (var handler in effectiveHandlers)
{
if (sb.Length > 1)
{
sb.Append(",");
}
sb.Append("{name:'");
sb.Append(handler.ClientHandlerName);
sb.Append("',options:function(){return {");
var isFirst = true;
var options = handler.GetHandlerOptionClientExpressions();
options.Add("enabled", handler.TranslateValueOrBinding(PostBackHandler.EnabledProperty));
foreach (var option in options)
{
if (!isFirst)
{
sb.Append(',');
}
isFirst = false;
sb.Append(option.Key);
sb.Append(":");
sb.Append(option.Value);
}
sb.Append("};}}");
}
sb.Append("]");
return(sb.ToString());
}
public static IEnumerable <string> GetContextPath(DotvvmControl control)
{
while (control != null)
{
var pathFragment = control.GetValue(Internal.PathFragmentProperty, false) as string;
if (pathFragment != null)
{
yield return(pathFragment);
}
else
{
var dataContextBinding = control.GetBinding(DotvvmBindableObject.DataContextProperty, false) as IValueBinding;
if (dataContextBinding != null)
{
yield return(dataContextBinding.GetKnockoutBindingExpression());
}
}
control = control.Parent;
}
}
public void DataBindItem(DotvvmControl parent, IHierarchyItem item, IDotvvmRequestContext context)
{
// render item template
var templatePlaceholder = new PlaceHolder();
templatePlaceholder.DataContext = item;
parent.Children.Add(templatePlaceholder);
ItemTemplate.BuildContent(context, templatePlaceholder);
if (item.Children.Any())
{
// wrap children in div
var childContainer = new HtmlGenericControl("div");
childContainer.Attributes["class"] = "child-container";
foreach (var child in item.Children)
{
DataBindItem(childContainer, child, context);
}
}
}
/// <summary>
/// Performs the data-binding and builds the controls inside the <see cref="Repeater"/>.
/// </summary>
private void SetChildren(IDotvvmRequestContext context, bool renderClientTemplate, bool memoizeReferences)
{
Children.Clear();
emptyDataContainer = null;
clientSeparator = null;
clientSideTemplate = null;
if (DataSource != null)
{
var itemBinding = GetItemBinding();
var index = 0;
foreach (var item in GetIEnumerableFromDataSource())
{
if (SeparatorTemplate != null && index > 0)
{
Children.Add(GetSeparator(context));
}
Children.Add(GetItem(context, item, index,
allowMemoizationRetrive: context.IsPostBack && !memoizeReferences, // on GET request we are not initializing the Repeater twice
allowMemoizationStore: memoizeReferences
));
index++;
}
}
if (renderClientTemplate)
{
if (SeparatorTemplate != null)
{
Children.Add(clientSeparator = GetSeparator(context));
}
Children.Add(clientSideTemplate = GetItem(context));
}
if (EmptyDataTemplate != null)
{
Children.Add(GetEmptyItem(context));
}
}
/// <summary>
/// Performs the data-binding and builds the controls inside the <see cref="Repeater"/>.
/// </summary>
private void SetChildren(IDotvvmRequestContext context, bool useServerTemplate)
{
Children.Clear();
emptyDataContainer = null;
clientSeparator = null;
if (useServerTemplate)
{
if (DataSource != null)
{
var itemBinding = GetItemBinding();
var index = 0;
foreach (var item in GetIEnumerableFromDataSource())
{
if (SeparatorTemplate != null && index > 0)
{
Children.Add(GetSeparator(context));
}
Children.Add(GetItem(context, item, index));
index++;
}
}
}
else
{
if (SeparatorTemplate != null)
{
Children.Add(clientSeparator = GetSeparator(context));
}
Children.Add(GetItem(context));
}
if (EmptyDataTemplate != null)
{
Children.Add(GetEmptyItem(context));
}
}
public void Add(string name, DotvvmControl control, DotvvmProperty property, Action nullBindingAction = null)
{
var binding = control.GetValueBinding(property);
if (binding == null)
{
if (nullBindingAction != null)
{
nullBindingAction();
}
else
{
Add(name, JsonConvert.SerializeObject(control.GetValue(property)));
}
}
else
{
entries.Add(new KnockoutBindingInfo()
{
Name = name, Expression = control.GetValueBinding(property).GetKnockoutBindingExpression(control)
});
}
}
private void CreateTemplates(IDotvvmRequestContext context, DataItemContainer placeholder, bool createEditTemplates = false)
{
var row = new HtmlGenericControl("tr");
DotvvmControl container = row;
placeholder.Children.Add(container);
// create cells
foreach (var column in Columns)
{
var cell = new HtmlGenericControl("td");
row.Children.Add(cell);
if (createEditTemplates && column.IsEditable)
{
column.CreateEditControls(context, cell);
}
else
{
column.CreateControls(context, cell);
}
}
}
public static string GenerateClientPostBackScript(string propertyName, ICommandBinding expression, DotvvmControl control, PostbackScriptOptions options)
{
object uniqueControlId = null;
if (expression is ControlCommandBindingExpression)
{
var target = (DotvvmControl)control.GetClosestControlBindingTarget();
uniqueControlId = target.GetDotvvmUniqueId();
}
var arguments = new List <string>()
{
"'root'",
options.ElementAccessor,
"[" + String.Join(", ", GetContextPath(control).Reverse().Select(p => '"' + p + '"')) + "]",
(uniqueControlId is IValueBinding ? "{ expr: " + JsonConvert.ToString(((IValueBinding)uniqueControlId).GetKnockoutBindingExpression(), '\'', StringEscapeHandling.Default) + "}" : "'" + (string)uniqueControlId + "'"),
options.UseWindowSetTimeout ? "true" : "false",
JsonConvert.SerializeObject(GetValidationTargetExpression(control)),
"null",
GetPostBackHandlersScript(control, propertyName)
};
// return the script
var condition = options.IsOnChange ? "if (!dotvvm.isViewModelUpdating) " : null;
var returnStatement = options.ReturnValue != null ? $";return {options.ReturnValue.ToString().ToLower()};" : "";
// call the function returned from binding js with runtime arguments
var postBackCall = $"{expression.GetCommandJavascript()}({String.Join(", ", arguments)})";
return(condition + postBackCall + returnStatement);
}
public static string GenerateClientPostBackScript(string propertyName, ICommandBinding expression, DotvvmControl control, bool useWindowSetTimeout = false,
bool?returnValue = false, bool isOnChange = false, string elementAccessor = "this")
{
return(GenerateClientPostBackScript(propertyName, expression, control, new PostbackScriptOptions(useWindowSetTimeout, returnValue, isOnChange, elementAccessor)));
}
public static void WriteKnockoutDataBindComment(this IHtmlWriter writer, string name, DotvvmControl control, DotvvmProperty property)
{
writer.WriteUnencodedText($"<!-- ko { name }: { control.GetValueBinding(property).GetKnockoutBindingExpression() } -->");
}
public static void AddKnockoutDataBind(this IHtmlWriter writer, string name, IEnumerable <KeyValuePair <string, IValueBinding> > expressions, DotvvmControl control, DotvvmProperty property)
{
writer.AddAttribute("data-bind", name + ": {" + String.Join(",", expressions.Select(e => "'" + e.Key + "': " + e.Value.GetKnockoutBindingExpression())) + "}", true, ", ");
}
public void BuildContent(IDotvvmRequestContext context, DotvvmControl container)
{
var controlBuilderFactory = context.Services.GetRequiredService <IControlBuilderFactory>();
BuildContentBody.Invoke(controlBuilderFactory, context.Services, container);
}
public abstract void CreateEditControls(IDotvvmRequestContext context, DotvvmControl container);
