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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2005 Novell, Inc.
//
// Authors:
// Jonathan Gilbert <logic@deltaq.org>
//
// Integration into MWF:
// Peter Bartok <pbartok@novell.com>
//
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace System.Windows.Forms
{
[DefaultProperty("Items")]
[DefaultEvent("SelectedItemChanged")]
[DefaultBindingProperty ("SelectedItem")]
[ClassInterface (ClassInterfaceType.AutoDispatch)]
[ComVisible (true)]
public class DomainUpDown : UpDownBase {
#region Local Variables
private DomainUpDownItemCollection items;
private int selected_index = -1;
private bool sorted;
private bool wrap;
private int typed_to_index = -1;
#endregion // Local Variables
#region DomainUpDownAccessibleObject sub-class
[ComVisible(true)]
public class DomainItemAccessibleObject : AccessibleObject {
#region DomainItemAccessibleObject Local Variables
private AccessibleObject parent;
#endregion // DomainItemAccessibleObject Local Variables
#region DomainItemAccessibleObject Constructors
public DomainItemAccessibleObject(string name, AccessibleObject parent) {
this.name = name;
this.parent = parent;
}
#endregion // DomainItemAccessibleObject Constructors
#region DomainItemAccessibleObject Properties
public override string Name {
get {
return base.Name;
}
set {
base.Name = value;
}
}
public override AccessibleObject Parent {
get {
return parent;
}
}
public override AccessibleRole Role {
get {
return base.Role;
}
}
public override AccessibleStates State {
get {
return base.State;
}
}
public override string Value {
get {
return base.Value;
}
}
#endregion // DomainItemAccessibleObject Properties
}
#endregion // DomainItemAccessibleObject sub-class
#region DomainUpDownAccessibleObject sub-class
[ComVisible(true)]
public class DomainUpDownAccessibleObject : ControlAccessibleObject {
#region DomainUpDownAccessibleObject Local Variables
//private Control owner;
#endregion // DomainUpDownAccessibleObject Local Variables
#region DomainUpDownAccessibleObject Constructors
public DomainUpDownAccessibleObject(Control owner) : base(owner)
{
//this.owner = owner;
}
#endregion // DomainUpDownAccessibleObject Constructors
#region DomainUpDownAccessibleObject Properties
public override AccessibleRole Role {
get {
return base.Role;
}
}
#endregion // DomainUpDownAccessibleObject Properties
#region DomainUpDownAccessibleObject Methods
public override AccessibleObject GetChild(int index) {
return base.GetChild (index);
}
public override int GetChildCount() {
return base.GetChildCount ();
}
#endregion // DomainUpDownAccessibleObject Methods
}
#endregion // DomainUpDownAccessibleObject sub-class
#region DomainUpDownItemCollection sub-class
public class DomainUpDownItemCollection : ArrayList {
#region Local Variables
#endregion // Local Variables
#region Constructors
internal DomainUpDownItemCollection() {}
#endregion // Constructors
#region Public Instance Properties
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public override object this[int index] {
get {
return base[index];
}
set {
if (value == null) {
throw new ArgumentNullException("value", "Cannot add null values to a DomainUpDownItemCollection");
}
base[index] = value;
OnCollectionChanged(index, 0);
}
}
#endregion // Public Instance Properties
#region Public Instance Methods
public override int Add(object item) {
if (item == null)
throw new ArgumentNullException("value", "Cannot add null values to a DomainUpDownItemCollection");
int ret = base.Add(item);
OnCollectionChanged(Count - 1, +1);
return ret;
}
public override void Insert(int index, object item) {
if (item == null)
throw new ArgumentNullException("value", "Cannot add null values to a DomainUpDownItemCollection");
base.Insert(index, item);
OnCollectionChanged(index, +1);
}
public override void Remove(object item) {
int index = IndexOf(item);
if (index >= 0)
RemoveAt(index);
}
public override void RemoveAt(int item) {
base.RemoveAt(item);
OnCollectionChanged(item, -1);
}
#endregion // Public Instance Methods
#region Internal Methods and Events
internal void OnCollectionChanged(int index, int size_delta) {
CollectionChangedEventHandler handler = CollectionChanged;
if (handler != null) {
handler(index, size_delta);
}
}
internal void PrivSort()
{
base.Sort (new ToStringSorter ());
}
private class ToStringSorter : IComparer
{
public int Compare (object x, object y)
{
return string.Compare (x.ToString (), y.ToString ());
}
}
internal event CollectionChangedEventHandler CollectionChanged;
#endregion // Internal Methods and Events
}
#endregion // DomainUpDownItemCollection sub-class
#region Private Methods
// normally I'd use an EventArgs class, but I don't want to create spurious objects here
internal delegate void CollectionChangedEventHandler(int index, int size_delta);
internal void items_CollectionChanged(int index, int size_delta) {
bool new_item = false;
if ((index == selected_index) && (size_delta <= 0))
new_item = true;
else if (index <= selected_index)
selected_index += size_delta;
if (sorted && (index >= 0)) // index < 0 means it is already sorting
items.PrivSort();
// XXX this might be wrong - it might be an explict 'Text = ...' assignment.
UpdateEditText();
if (new_item) {
OnSelectedItemChanged(this, EventArgs.Empty);
}
}
void go_to_user_input() {
UserEdit = false;
if (typed_to_index >= 0) {
selected_index = typed_to_index;
OnSelectedItemChanged(this, EventArgs.Empty);
}
}
private void TextBoxLostFocus(object source, EventArgs e) {
Select(base.txtView.SelectionStart + base.txtView.SelectionLength, 0);
}
int SearchTextWithPrefix (char key_char)
{
string prefix = key_char.ToString ();
int start_index, i;
start_index = selected_index == -1 ? 0 : selected_index;
i = selected_index == -1 || selected_index + 1 >= items.Count ? 0 : start_index + 1;
while (true) {
string item_text = items [i].ToString ();
if (String.Compare (prefix, 0, item_text, 0, 1, true) == 0)
return i;
if (i + 1 >= items.Count)
i = 0;
else
i++;
if (i == start_index)
break;
}
return -1;
}
bool IsValidInput (char key_char)
{
return Char.IsLetterOrDigit (key_char)
|| Char.IsNumber (key_char)
|| Char.IsPunctuation (key_char)
|| Char.IsSymbol (key_char)
|| Char.IsWhiteSpace (key_char);
}
private void TextBoxKeyDown(object source, KeyPressEventArgs e) {
if (ReadOnly) {
char key_char = e.KeyChar;
if (IsValidInput (key_char) && items.Count > 0) {
int idx = SearchTextWithPrefix (key_char);
if (idx > -1) {
SelectedIndex = idx;
e.Handled = true;
}
}
return;
}
if (!UserEdit) {
base.txtView.SelectionLength = 0;
typed_to_index = -1;
}
if (base.txtView.SelectionLength == 0) {
base.txtView.SelectionStart = 0;
}
if (base.txtView.SelectionStart != 0) {
return;
}
if (e.KeyChar == '\b') { // backspace
if (base.txtView.SelectionLength > 0) {
string prefix = base.txtView.SelectedText.Substring(0, base.txtView.SelectionLength - 1);
bool found = false;
if (typed_to_index < 0) {
typed_to_index = 0;
}
if (sorted) {
for (int i=typed_to_index; i >= 0; i--) {
int difference = string.Compare(prefix, 0, items[i].ToString(), 0, prefix.Length, true);
if (difference == 0) {
found = true;
typed_to_index = i;
}
if (difference > 0) { // since it is sorted, no strings after this point will match
break;
}
}
} else {
for (int i=0; i < items.Count; i++) {
if (0 == string.Compare(prefix, 0, items[i].ToString(), 0, prefix.Length, true)) {
found = true;
typed_to_index = i;
break;
}
}
}
ChangingText = true;
if (found)
Text = items[typed_to_index].ToString();
else
Text = prefix;
Select(0, prefix.Length);
UserEdit = true;
e.Handled = true;
}
}
else {
char key_char = e.KeyChar;
if (IsValidInput (key_char)) {
string prefix = base.txtView.SelectedText + key_char;
bool found = false;
if (typed_to_index < 0) {
typed_to_index = 0;
}
if (sorted) {
for (int i=typed_to_index; i < items.Count; i++) {
int difference = string.Compare(prefix, 0, items[i].ToString(), 0, prefix.Length, true);
if (difference == 0) {
found = true;
typed_to_index = i;
}
if (difference <= 0) { // since it is sorted, no strings after this point will match
break;
}
}
} else {
for (int i=0; i < items.Count; i++) {
if (0 == string.Compare(prefix, 0, items[i].ToString(), 0, prefix.Length, true)) {
found = true;
typed_to_index = i;
break;
}
}
}
ChangingText = true;
if (found) {
Text = items[typed_to_index].ToString();
} else {
Text = prefix;
}
Select(0, prefix.Length);
UserEdit = true;
e.Handled = true;
}
}
}
#endregion // Private Methods
#region Public Constructors
public DomainUpDown() {
selected_index = -1;
sorted = false;
wrap = false;
typed_to_index = -1;
items = new DomainUpDownItemCollection();
items.CollectionChanged += new CollectionChangedEventHandler(items_CollectionChanged);
this.txtView.LostFocus +=new EventHandler(TextBoxLostFocus);
this.txtView.KeyPress += new KeyPressEventHandler(TextBoxKeyDown);
UpdateEditText ();
}
#endregion // Public Constructors
#region Public Instance Properties
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
[Editor("System.Windows.Forms.Design.StringCollectionEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
[Localizable(true)]
public DomainUpDownItemCollection Items {
get {
return items;
}
}
[Browsable (false)]
[EditorBrowsable (EditorBrowsableState.Never)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
public new Padding Padding {
get { return Padding.Empty; }
set { }
}
[Browsable(false)]
[DefaultValue(-1)]
public int SelectedIndex {
get {
return selected_index;
}
set {
object before = (selected_index >= 0) ? items[selected_index] : null;
selected_index = value;
UpdateEditText();
object after = (selected_index >= 0) ? items[selected_index] : null;
if (!ReferenceEquals(before, after)) {
OnSelectedItemChanged(this, EventArgs.Empty);
}
}
}
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public object SelectedItem {
get {
if (selected_index >= 0) {
return items[selected_index];
} else {
return null;
}
}
set {
SelectedIndex = items.IndexOf(value);
}
}
[DefaultValue(false)]
public bool Sorted {
get {
return sorted;
}
set {
sorted = value;
if (sorted)
items.PrivSort();
}
}
[DefaultValue(false)]
[Localizable(true)]
public bool Wrap {
get {
return wrap;
}
set {
wrap = value;
}
}
#endregion // Public Instance Properties
#region Public Instance Methods
public override void DownButton() {
if (UserEdit)
go_to_user_input();
int new_index = selected_index + 1;
if (new_index >= items.Count) {
if (!wrap)
return;
new_index = 0;
}
SelectedIndex = new_index;
// UIA Framework Event: DownButton Click
OnUIADownButtonClick (EventArgs.Empty);
}
public override string ToString() {
return base.ToString() + ", Items.Count: " + items.Count + ", SelectedIndex: " + selected_index;
}
public override void UpButton() {
if (UserEdit)
go_to_user_input();
int new_index = selected_index - 1;
if (new_index < 0) {
if (!wrap) {
return;
}
new_index = items.Count - 1;
}
SelectedIndex = new_index;
// UIA Framework Event: UpButton Click
OnUIAUpButtonClick (EventArgs.Empty);
}
#endregion // Public Instance Methods
#region Protected Instance Methods
protected override AccessibleObject CreateAccessibilityInstance() {
AccessibleObject acc;
acc = new AccessibleObject(this);
acc.role = AccessibleRole.SpinButton;
return acc;
}
protected override void OnChanged(object source, EventArgs e) {
base.OnChanged (source, e);
}
protected void OnSelectedItemChanged(object source, EventArgs e) {
EventHandler eh = (EventHandler)(Events [SelectedItemChangedEvent]);
if (eh != null)
eh (this, e);
}
protected override void UpdateEditText() {
if ((selected_index >= 0) && (selected_index < items.Count)) {
ChangingText = true;
Text = items[selected_index].ToString();
}
}
protected override void OnTextBoxKeyPress (object source, KeyPressEventArgs e)
{
base.OnTextBoxKeyPress (source, e);
}
#endregion // Protected Instance Methods
#region Events
[Browsable (false)]
[EditorBrowsable (EditorBrowsableState.Never)]
public new event EventHandler PaddingChanged {
add { base.PaddingChanged += value; }
remove { base.PaddingChanged -= value; }
}
static object SelectedItemChangedEvent = new object ();
public event EventHandler SelectedItemChanged {
add { Events.AddHandler (SelectedItemChangedEvent, value); }
remove { Events.RemoveHandler (SelectedItemChangedEvent, value); }
}
#endregion // Events
}
}
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