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namespace System.Web.DynamicData {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.UI.WebControls;
using System.Web.UI;
using System.Collections;
using System.Collections.Specialized;
// Dynamically creates a field template for text or boolean fields
internal class SimpleFieldTemplateUserControl : FieldTemplateUserControl {
private const string TextBoxID = "TextBox";
// Used for edit scenariors, since we only have one value for these
// simple fieldtemplates
private Func<object> _valueExtrator;
private List<BaseValidator> _validators;
protected SimpleFieldTemplateUserControl() {
}
protected override void OnInit(EventArgs e) {
base.OnInit(e);
// Add the validators to the field template
InitializeValidators();
}
protected override void ExtractValues(IOrderedDictionary dictionary) {
if (_valueExtrator != null) {
object value = _valueExtrator();
string stringValue = value as string;
dictionary[Column.Name] = (stringValue != null ? ConvertEditedValue(stringValue) : value);
}
}
public static SimpleFieldTemplateUserControl CreateBooleanTemplate(bool readOnly) {
SimpleFieldTemplateUserControl control = new SimpleFieldTemplateUserControl();
var checkBox = new CheckBox();
checkBox.Enabled = !readOnly;
checkBox.DataBinding += (sender, e) => {
if (control.FieldValue != null) {
checkBox.Checked = (bool)control.FieldValue;
}
};
if (!readOnly) {
control._valueExtrator = () => checkBox.Checked;
}
control.Controls.Add(checkBox);
return control;
}
public static SimpleFieldTemplateUserControl CreateTextTemplate(MetaColumn column, bool readOnly) {
SimpleFieldTemplateUserControl control = new SimpleFieldTemplateUserControl();
if (readOnly) {
var literal = new Literal();
literal.DataBinding += (sender, e) => {
literal.Text = control.FieldValueString;
};
control.Controls.Add(literal);
}
else {
var textBox = new TextBox();
textBox.DataBinding += (sender, e) => {
textBox.Text = control.FieldValueEditString;
};
// Logic copied from BoundField
if (column.ColumnType.IsPrimitive) {
textBox.Columns = 5;
}
control._valueExtrator = () => textBox.Text;
textBox.CssClass = "DDTextBox";
textBox.ID = TextBoxID;
control.Controls.Add(textBox);
control.CreateValidators(column);
}
return control;
}
internal void InitializeValidators() {
if (_validators != null) {
_validators.ForEach(v => Controls.Add(v));
_validators.ForEach(v => SetUpValidator(v));
}
}
// This method create's validators for a particular column type. This should be as close to the the actual FieldTemplates (user controls) as possible.
// DateTime -> Required, Regex
// Integer -> Regex, Required, Range, Compare
// Decimal -> Regex, Required, Range, Compare
// Text -> Regex, Required
// Enum -> Required
private void CreateValidators(MetaColumn column) {
if (_validators == null) {
_validators = new List<BaseValidator>();
}
// Exclude regular expression validator for enum columns
if (column.GetEnumType() == null) {
RegularExpressionValidator regularExpressionValidator = new RegularExpressionValidator {
ControlToValidate = TextBoxID,
Enabled = false,
Display = ValidatorDisplay.Static,
CssClass = "DDControl DDValidator"
};
_validators.Add(regularExpressionValidator);
}
if (column.IsInteger || column.ColumnType == typeof(decimal) || column.ColumnType == typeof(double) || column.ColumnType == typeof(float)) {
RangeValidator rangeValidator = new RangeValidator {
ControlToValidate = TextBoxID,
Enabled = false,
Display = ValidatorDisplay.Static,
MinimumValue = "0",
MaximumValue = "100",
CssClass = "DDControl DDValidator",
Type = column.IsInteger ? ValidationDataType.Integer : ValidationDataType.Double
};
_validators.Add(rangeValidator);
CompareValidator compareValidator = new CompareValidator {
ControlToValidate = TextBoxID,
Enabled = false,
Display = ValidatorDisplay.Static,
Operator = ValidationCompareOperator.DataTypeCheck,
CssClass = "DDControl DDValidator",
Type = column.IsInteger ? ValidationDataType.Integer : ValidationDataType.Double
};
_validators.Add(compareValidator);
}
RequiredFieldValidator requiredFieldValidator = new RequiredFieldValidator {
ControlToValidate = TextBoxID,
Enabled = false,
CssClass = "DDControl DDValidator",
Display = ValidatorDisplay.Static
};
_validators.Add(requiredFieldValidator);
DynamicValidator dynamicValidator = new DynamicValidator {
ControlToValidate = TextBoxID,
CssClass = "DDControl DDValidator",
Display = ValidatorDisplay.Static
};
_validators.Add(dynamicValidator);
}
}
}
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