/// <summary>
/// Updates the check box's Checked state based on the boolean property value.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
// let the base handle everything except value change
base.UpdateElement(change - PropertyChange.Value);
if (property == null)
{
return;
}
bool check = property.InternalValue is bool && (bool)property.InternalValue;
if (change.IncludesValue())
{
((CheckBox)control).Checked = check;
DataListObject list = property.GetParent() as DataListObject;
if (list != null)
{
SetControlAttribute("row", "" + list.CurrentRow);
}
}
// Update property value after binding to make it in sync with the checkbox.
// Otherwise if the checkbox stays unchecked it will not post a false value
// and the property value will remain whatever it was, e.g. null.
if (change == PropertyChange.All && !check)
{
PostedValue = "false";
}
}
/// <summary>
/// Updates the toggle button based on the given property change.
/// If the property is not required the toggle button will allow three states
/// to support an indeterminate state when the property value is not set.
/// Otherwise turns the toggle button on or off based on the Boolean value of the property.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null)
{
return;
}
if (change.IncludesRequired())
{
((ToggleButton)element).IsThreeState = !property.Required;
}
if (change.IncludesValue())
{
bool? check = null;
object val = property.InternalValue;
if (val is bool)
{
check = (bool)val;
}
else
{
check = val as bool?;
}
((ToggleButton)element).IsChecked = check;
}
}
/// <summary>
/// Updates the text of the text block to the property value formatted
/// according to the property's DisplayString format.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null) return;
if (change.IncludesValue())
{
((TextBlock)element).Text = property.DisplayStringValue;
}
}
/// <summary>
/// Updates the text of the hyperlink to the property value formatted
/// according to the property's DisplayString format.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null) return;
if (change.IncludesValue())
{
Hyperlink lnk = (Hyperlink)element;
lnk.Inlines.Clear();
lnk.Inlines.Add(property.DisplayStringValue);
}
}
/// <summary>
/// Updates the text of the text box to the property value formatted
/// according to the property's EditString format if editable or DisplayString if not editable.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null)
{
return;
}
if (change.IncludesValue())
{
((TextBox)element).Text = property.GetStringValue(property.Editable ? ValueFormat.EditString : ValueFormat.DisplayString, row);
}
}
/// <summary>
/// Updates the text of the text block to the property value formatted
/// according to the property's DisplayString format.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null)
{
return;
}
if (change.IncludesValue())
{
((TextBlock)element).Text = property.DisplayStringValue;
}
}
/// <summary>
/// Updates the text of the text box to the property value formatted
/// according to the property's EditString format if editable or DisplayString if not editable.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null)
{
return;
}
if (change.IncludesValue())
{
((PasswordBox)element).Password = property.Editable ? property.EditStringValue : property.DisplayStringValue;
}
}
/// <summary>
/// Updates the text of a text control to the property value formatted
/// according to the property's EditString format if editable or DisplayString if not editable.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null)
{
return;
}
if (change.IncludesValue() && control is ITextControl txtCtl)
{
txtCtl.Text = property.GetStringValue(control is IEditableTextControl && property.Editable ?
ValueFormat.EditString : ValueFormat.DisplayString,
row);
}
}
/// <summary>
/// Updates the text of the hyperlink to the property value formatted
/// according to the property's DisplayString format.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null)
{
return;
}
if (change.IncludesValue())
{
Hyperlink lnk = (Hyperlink)element;
lnk.Inlines.Clear();
lnk.Inlines.Add(property.GetStringValue(ValueFormat.DisplayString, row));
}
}
/// <summary>
/// Updates the text of a text control to the property value formatted
/// according to the property's EditString format if editable or DisplayString if not editable.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null)
{
return;
}
ITextControl txtCtl = control as ITextControl;
if (change.IncludesValue() && txtCtl != null)
{
txtCtl.Text = control is IEditableTextControl && property.Editable ?
property.EditStringValue : property.DisplayStringValue;
}
}
/// <summary>
/// Updates the control and fills the items and selection listboxes.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (change.IncludesItems() || change.IncludesValue())
{
// update selection list
ListBox lbxSelection = (control as BasePickListControl).lbx_Selection;
lbxSelection.Items.Clear();
IEnumerable values = property.IsMultiValued ?
property.InternalValue as IEnumerable :
new object[] { property.InternalValue };
if (values != null)
{
foreach (object i in values)
{
lbxSelection.Items.Add(new ListItem(
property.ValueToString(i, ValueFormat.DisplayString),
property.ValueToString(i, ValueFormat.EditString)));
}
}
// update items list
ListBox lbxItems = (control as BasePickListControl).lbx_Items;
lbxItems.Items.Clear();
IEnumerable items = property.ItemsProvider != null?property.ItemsProvider(null) : null;
if (items != null)
{
foreach (object i in items)
{
string value = property.ValueToString(i, ValueFormat.EditString);
ListItem li = lbxSelection.Items.FindByValue(value);
if (li == null)
{
lbxItems.Items.Add(new ListItem(
property.ValueToString(i, ValueFormat.DisplayString),
value));
}
}
}
}
}
/// <summary>
/// Updates the toggle button based on the given property change.
/// If the property is not required the toggle button will allow three states
/// to support an indeterminate state when the property value is not set.
/// Otherwise turns the toggle button on or off based on the Boolean value of the property.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null) return;
if (change.IncludesRequired())
{
((ToggleButton)element).IsThreeState = !property.Required;
}
if (change.IncludesValue())
{
bool? check = null;
object val = property.InternalValue;
if (val is bool) check = (bool)val;
else check = val as bool?;
((ToggleButton)element).IsChecked = check;
}
}
/// <summary>
/// Updates the selected date of the date picker.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null)
{
return;
}
if (change.IncludesValue())
{
DateTimeProperty dtp = property as DateTimeProperty;
if (dtp != null)
{
((DatePicker)element).SelectedDate = dtp.Value;
}
else
{
((DatePicker)element).Text = property.GetStringValue(property.Editable ? ValueFormat.EditString : ValueFormat.DisplayString, row);
}
}
}
/// <summary>
/// Updates the check box's Checked state based on the boolean property value.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
// let the base handle everything except value change
base.UpdateElement(change - PropertyChange.Value);
if (property == null) return;
bool check = property.InternalValue is bool && (bool)property.InternalValue;
if (change.IncludesValue())
{
((CheckBox)control).Checked = check;
DataListObject list = property.GetParent() as DataListObject;
if (list != null)
SetControlAttribute("row", "" + list.CurrentRow);
}
// Update property value after binding to make it in sync with the checkbox.
// Otherwise if the checkbox stays unchecked it will not post a false value
// and the property value will remain whatever it was, e.g. null.
if (change == PropertyChange.All && !check)
{
PostedValue = "false";
}
}
/// <summary>
/// Updates the check box's Checked state based on the boolean property value.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
// let the base handle everything except value change
base.UpdateElement(change - PropertyChange.Value);
if (property == null)
{
return;
}
object val = property.GetValue(ValueFormat.Internal, row);
bool check = val is bool b && b;
if (change.IncludesValue())
{
((CheckBox)control).Checked = check;
}
// Update property value after binding to make it in sync with the checkbox.
// Otherwise if the checkbox stays unchecked it will not post a false value
// and the property value will remain whatever it was, e.g. null.
if (change == PropertyChange.All && !check)
{
PostedValue = "false";
}
}
/// <summary>
/// Updates the control and fills the items and selection listboxes.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (change.IncludesItems() || change.IncludesValue())
{
// update selection list
ListBox lbxSelection = (control as BasePickListControl).lbx_Selection;
lbxSelection.Items.Clear();
IEnumerable values = property.IsMultiValued ?
property.InternalValue as IEnumerable :
new object[] { property.InternalValue };
if (values != null) foreach (object i in values)
{
lbxSelection.Items.Add(new ListItem(
property.ValueToString(i, ValueFormat.DisplayString),
property.ValueToString(i, ValueFormat.EditString)));
}
// update items list
ListBox lbxItems = (control as BasePickListControl).lbx_Items;
lbxItems.Items.Clear();
IEnumerable items = property.ItemsProvider != null ? property.ItemsProvider(null) : null;
if (items != null) foreach (object i in items)
{
string value = property.ValueToString(i, ValueFormat.EditString);
ListItem li = lbxSelection.Items.FindByValue(value);
if (li == null)
{
lbxItems.Items.Add(new ListItem(
property.ValueToString(i, ValueFormat.DisplayString),
value));
}
}
}
}
/// <summary>
/// Updates the list control based on the given property change.
/// Updates the list of possible items based on the values provided by the property
/// and inserts a blank item for a drop down list if the property is editable and not required.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
// let the base handle everything except value change
base.UpdateElement(change - PropertyChange.Value);
ListControl list = control as ListControl;
if (property == null || list == null)
{
return;
}
object val = property.InternalValue;
IList lst = val == null ? new ArrayList() : val as IList;
ListBox lb = control as ListBox;
bool isMultiVal = lst != null && (control is CheckBoxList ||
lb != null && lb.SelectionMode == ListSelectionMode.Multiple);
DropDownList dl = control as DropDownList;
if (change.IncludesItems() || // if items list changed,
isMultiVal && change.IncludesEditable() || // or control shows all items and Editable changed,
dl != null && change.IncludesRequired() || // or control is DropDownList and Required changed,
change.IncludesValue()) // or property value changed
{
// get the list of items to show
IEnumerable src = null;
if (isMultiVal && !property.Editable)
{
src = lst;
}
else if (property.ItemsProvider != null)
{
src = property.ItemsProvider(null);
}
list.Items.Clear(); // clear control's item collection
// for DropDownList, add special items in case when not Required or Required and has no value
if (dl != null && !property.Required)
{
list.Items.Add(new ListItem("", property.NullString));
}
if (dl != null && property.Required && property.IsNull())
{
list.Items.Add(new ListItem("Select Value...", ""));
}
int insertionPoint = list.Items.Count;
// add items to show
if (src != null)
{
foreach (object i in src)
{
ListItem li = new ListItem(property.ValueToString(i, ValueFormat.DisplayString),
property.ValueToString(i, ValueFormat.EditString));
list.Items.Add(li);
li.Selected = src == lst; // if items are values, mark them as selected
}
}
// if not showing only values, make sure the values are present in the list and mark them as selected
if (src != lst)
{
IEnumerable values = isMultiVal ? lst : new object[] { (lst != null && lst.Count > 0) ? lst[0] : property.InternalValue };
foreach (object i in values)
{
ListItem li = list.Items.FindByValue(property.ValueToString(i, ValueFormat.EditString));
if (li == null) // add values not in list
{
li = new ListItem(property.ValueToString(i, ValueFormat.DisplayString),
property.ValueToString(i, ValueFormat.EditString));
li.Attributes["disabled"] = "disabled";; // disable items not included in the list of expected values
list.Items.Insert(insertionPoint++, li); // insert them after special items and before expected values
}
li.Selected = true;
}
}
}
}
/// <summary>
/// Updates the selector based on the given property change.
/// Updates the list of possible items based on the values provided by the property
/// and inserts a blank item for a combo box if the property is editable and not required.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
Selector sel = element as Selector;
if (property == null || sel == null)
{
return;
}
object val = property.InternalValue;
IList lst = val as IList;
ListBox lb = element as ListBox;
ComboBox cb = element as ComboBox;
if (change.IncludesItems() ||
lb != null && change.IncludesEditable() ||
cb != null && change.IncludesRequired())
{
sel.Items.Clear();
IEnumerable src = null;
if (lb != null && !property.Editable && lst != null)
{
src = lst;
}
else if (property.ItemsProvider != null)
{
src = property.ItemsProvider(null);
}
// for non-required drop down lists add null string option
if (cb != null && !cb.IsEditable && !property.Required)
{
sel.Items.Add(property.NullString);
}
// add items explicitly. Don't use sel.ItemSource since src is not observable
if (src != null)
{
foreach (object item in src)
{
sel.Items.Add(item);
}
}
}
if (change.IncludesValue() || change.IncludesItems())
{
if (lb != null && lst != null && lb.SelectionMode != SelectionMode.Single)
{
lb.SelectedItems.Clear();
foreach (object item in lst)
{
lb.SelectedItems.Add(item);
}
}
else if (lst != null && lst.Count > 0)
{
sel.SelectedItem = lst[0];
}
else
{
sel.SelectedItem = val;
}
if (cb != null && cb.IsEditable)
{
cb.Text = property.EditStringValue;
}
}
}
/// <summary>
/// Updates the selector based on the given property change.
/// Updates the list of possible items based on the values provided by the property
/// and inserts a blank item for a combo box if the property is editable and not required.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
Selector sel = element as Selector;
if (property == null || sel == null) return;
object val = property.InternalValue;
IList lst = val as IList;
ListBox lb = element as ListBox;
ComboBox cb = element as ComboBox;
if (change.IncludesItems() ||
lb != null && change.IncludesEditable() ||
cb != null && change.IncludesRequired())
{
sel.Items.Clear();
IEnumerable src = null;
if (lb != null && !property.Editable && lst != null) src = lst;
else if (property.ItemsProvider != null) src = property.ItemsProvider(null);
// for non-required drop down lists add null string option
if (cb != null && !cb.IsEditable && !property.Required)
sel.Items.Add(property.NullString);
// add items explicitly. Don't use sel.ItemSource since src is not observable
if (src != null) foreach (object item in src) sel.Items.Add(item);
}
if (change.IncludesValue() || change.IncludesItems())
{
if (lb != null && lst != null && lb.SelectionMode != SelectionMode.Single)
{
lb.SelectedItems.Clear();
foreach (object item in lst) lb.SelectedItems.Add(item);
}
else if (lst != null && lst.Count > 0) sel.SelectedItem = lst[0];
else sel.SelectedItem = val;
if (cb != null && cb.IsEditable) cb.Text = property.EditStringValue;
}
}
/// <summary>
/// Updates the text of a text control to the property value formatted
/// according to the property's EditString format if editable or DisplayString if not editable.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
base.UpdateElement(change);
if (property == null) return;
ITextControl txtCtl = control as ITextControl;
if (change.IncludesValue() && txtCtl != null)
{
txtCtl.Text = control is IEditableTextControl && property.Editable ?
property.EditStringValue : property.DisplayStringValue;
}
}
/// <summary>
/// Updates the list control based on the given property change.
/// Updates the list of possible items based on the values provided by the property
/// and inserts a blank item for a drop down list if the property is editable and not required.
/// </summary>
/// <param name="change">The property change.</param>
protected override void UpdateElement(PropertyChange change)
{
// let the base handle everything except value change
base.UpdateElement(change - PropertyChange.Value);
ListControl list = control as ListControl;
if (property == null || list == null) return;
object val = property.InternalValue;
IList lst = val == null ? new ArrayList() : val as IList;
ListBox lb = control as ListBox;
bool isMultiVal = lst != null && (control is CheckBoxList
|| lb != null && lb.SelectionMode == ListSelectionMode.Multiple);
DropDownList dl = control as DropDownList;
if (change.IncludesItems() // if items list changed,
|| isMultiVal && change.IncludesEditable() // or control shows all items and Editable changed,
|| dl != null && change.IncludesRequired() // or control is DropDownList and Required changed,
|| change.IncludesValue()) // or property value changed
{
// get the list of items to show
IEnumerable src = null;
if (isMultiVal && !property.Editable) src = lst;
else if (property.ItemsProvider != null) src = property.ItemsProvider(null);
list.Items.Clear(); // clear control's item collection
// for DropDownList, add special items in case when not Required or Required and has no value
if (dl != null && !property.Required)
list.Items.Add(new ListItem("", property.NullString));
if (dl != null && property.Required && property.IsNull())
list.Items.Add(new ListItem("Select Value...", ""));
int insertionPoint = list.Items.Count;
// add items to show
if (src != null)
{
foreach (object i in src)
{
ListItem li = new ListItem(property.ValueToString(i, ValueFormat.DisplayString),
property.ValueToString(i, ValueFormat.EditString));
list.Items.Add(li);
li.Selected = src == lst; // if items are values, mark them as selected
}
}
// if not showing only values, make sure the values are present in the list and mark them as selected
if (src != lst)
{
IEnumerable values = isMultiVal ? lst : new object[] { (lst != null && lst.Count > 0) ? lst[0] : property.InternalValue };
foreach (object i in values)
{
ListItem li = list.Items.FindByValue(property.ValueToString(i, ValueFormat.EditString));
if (li == null) // add values not in list
{
li = new ListItem(property.ValueToString(i, ValueFormat.DisplayString),
property.ValueToString(i, ValueFormat.EditString));
li.Attributes["disabled"] = "disabled"; ; // disable items not included in the list of expected values
list.Items.Insert(insertionPoint++, li); // insert them after special items and before expected values
}
li.Selected = true;
}
}
}
}