public static TWidget TryGetWidget <TWidget>(this jQueryObject element) where TWidget : class
{
if (element == null)
{
throw new Exception("Argument 'element' is null!");
}
TWidget widget;
if (typeof(TWidget).IsAssignableFrom(typeof(Widget)))
{
var widgetName = WidgetExtensions.GetWidgetName(typeof(TWidget));
widget = element.GetDataValue(widgetName) as TWidget;
if (widget != null)
{
return(widget);
}
}
var data = element.GetData();
foreach (string key in data.Keys)
{
widget = data[key] as TWidget;
if (widget != null)
{
return(widget);
}
}
return(null);
}
/// <summary>
/// Creates a widget on given element. Widget gets a unique name like MyNamespace_MyWidget1234.
/// </summary>
/// <remarks>
/// * A data value is added to element with this unique name as key, and the widget object as value.
/// * Only one widget instance of same class can be created on a element.
/// * All events attached by this widget class will be unbound when element is removed from document.
/// * Elements gets a css class like "s-MyWidget" (it has no namespace by default, but this can be customized)
/// </remarks>
protected Widget(jQueryObject element)
{
this.element = element;
this.widgetName = WidgetExtensions.GetWidgetName(this.GetType());
this.uniqueName = widgetName + (NextWidgetNumber++).ToString();
if (element.GetDataValue(widgetName) != null)
{
throw new Exception(String.Format("The element already has widget '{0}'!", widgetName));
}
var self = this;
element.Bind("remove." + widgetName, (e) => self.Destroy())
.Data(widgetName, this);
AddCssClass();
if (IsAsyncWidget())
{
Window.SetTimeout(delegate()
{
if (element != null && asyncPromise == null)
{
asyncPromise = this.InitializeAsync();
}
}, 0);
}
}
public static TWidget TryGetWidget <TWidget>(this jQueryObject element) where TWidget : Widget
{
if (element == null)
{
throw new Exception("Argument 'element' is null!");
}
var widgetName = WidgetExtensions.GetWidgetName(typeof(TWidget));
return(element.GetDataValue(widgetName) as TWidget);
}
/// <summary>
/// Creates a widget on given element. Widget gets a unique name like MyNamespace_MyWidget1234.
/// </summary>
/// <remarks>
/// * A data value is added to element with this unique name as key, and the widget object as value.
/// * Only one widget instance of same class can be created on a element.
/// * All events attached by this widget class will be unbound when element is removed from document.
/// * Elements gets a css class like "s-MyWidget" (it has no namespace by default, but this can be customized)
/// </remarks>
protected Widget(jQueryObject element)
{
this.element = element;
this.widgetName = WidgetExtensions.GetWidgetName(this.GetType());
this.uniqueName = widgetName + (NextWidgetNumber++).ToString();
if (element.GetDataValue(widgetName) != null)
{
throw new Exception(String.Format("The element already has widget '{0}'!", widgetName));
}
var self = this;
element.Bind("remove." + widgetName, (e) => self.Destroy())
.Data(widgetName, this);
AddCssClass();
OnInit();
}
public static object TryGetWidget(this jQueryObject element, Type widgetType)
{
if (widgetType == null)
{
throw new Exception("Argument 'widgetType' is null!");
}
if (element == null)
{
throw new Exception("Argument 'element' is null!");
}
var widgetName = WidgetExtensions.GetWidgetName(widgetType);
var widget = element.GetDataValue(widgetName);
if (widget != null && !widgetType.IsAssignableFrom(widget.GetType()))
{
return(null);
}
return(widget);
}
static WidgetExtensions()
{
typeof(Widget).Prototype["changeSelect2"] =
new Action <jQueryEventHandler>((handler) =>
{
var widget = Script.This.As <Widget>();
widget.Element.Bind2("change." + widget.UniqueName, (e, x) =>
{
if (e.HasOriginalEvent() || Q.IsFalse(x))
{
handler(e);
}
});
}
);
typeof(Widget).Prototype["change"] =
new Action <jQueryEventHandler>((handler) =>
{
var widget = Script.This.As <Widget>();
widget.Element.Bind("change." + widget.UniqueName, handler);
}
);
typeof(Widget).Prototype["getGridField"] =
new Func <jQueryObject>(() =>
{
return(Script.This.As <Widget>().Element.Closest(".field"));
}
);
jQuery.Instance.fn.tryGetWidget = new Func <Type, object>((widgetType) =>
{
var element = Script.This.As <jQueryObject>();
object widget;
if (typeof(Widget).IsAssignableFrom(widgetType))
{
var widgetName = WidgetExtensions.GetWidgetName(widgetType);
widget = element.GetDataValue(widgetName);
if (widget != null && !widgetType.IsAssignableFrom(widget.GetType()))
{
widget = null;
}
if (widget != null)
{
return(widget);
}
}
var data = element.GetData();
if (data == null)
{
return(null);
}
foreach (string key in data.Keys)
{
widget = data[key];
if (widget != null && widgetType.IsAssignableFrom(widget.GetType()))
{
return(widget);
}
}
return(null);
});
jQuery.Instance.fn.getWidget = new Func <Type, object>((widgetType) =>
{
var element = Script.This.As <jQueryObject>();
if (element == null)
{
throw new ArgumentNullException("element");
}
if (element.Length == 0)
{
throw new Exception(String.Format("Searching for widget of type '{0}' on a non-existent element! ({1})",
widgetType.FullName, element.Selector));
}
var widget = TryGetWidget(element, widgetType);
if (widget == null)
{
throw new Exception(String.Format("Element has no widget of type '{0}'!", widgetType.FullName));
}
return(widget);
});
}
static WidgetExtensions()
{
typeof(Widget).Prototype["changeSelect2"] =
new Action <jQueryEventHandler>((handler) =>
{
var widget = Script.This.As <Widget>();
widget.Element.Bind2("change." + widget.UniqueName, (e, x) =>
{
if (e.HasOriginalEvent() || Q.IsFalse(x))
{
handler(e);
}
});
}
);
typeof(Widget).Prototype["change"] =
new Action <jQueryEventHandler>((handler) =>
{
var widget = Script.This.As <Widget>();
widget.Element.Bind("change." + widget.UniqueName, handler);
}
);
typeof(Widget).Prototype["getGridField"] =
new Func <jQueryObject>(() =>
{
return(Script.This.As <Widget>().Element.Closest(".field"));
}
);
jQuery.Instance.fn.tryGetWidget = new Func <Type, object>((widgetType) =>
{
var element = Script.This.As <jQueryObject>();
object widget;
if (typeof(Widget).IsAssignableFrom(widgetType))
{
var widgetName = WidgetExtensions.GetWidgetName(widgetType);
widget = element.GetDataValue(widgetName);
if (widget != null && !widgetType.IsAssignableFrom(widget.GetType()))
{
widget = null;
}
if (widget != null)
{
return(widget);
}
}
var data = element.GetData();
if (data == null)
{
return(null);
}
foreach (string key in data.Keys)
{
widget = data[key];
if (widget != null && widgetType.IsAssignableFrom(widget.GetType()))
{
return(widget);
}
}
return(null);
});
jQuery.Instance.fn.getWidget = new Func <Type, object>((widgetType) =>
{
var element = Script.This.As <jQueryObject>();
if (element == null)
{
throw new ArgumentNullException("element");
}
if (element.Length == 0)
{
throw new Exception(String.Format("Searching for widget of type '{0}' on a non-existent element! ({1})",
widgetType.FullName, element.Selector));
}
var widget = TryGetWidget(element, widgetType);
if (widget == null)
{
var message = String.Format("Element has no widget of type '{0}'! If you have recently changed editor type of a property in " +
"a form class, or changed data type in row (which also changes editor type) your script side Form definition might be out of date. " +
"Make sure your project builds successfully and transform T4 templates", widgetType.FullName);
Q.NotifyError(message);
throw new Exception(message);
}
return(widget);
});
}
