Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / KeysConverter.cs / 1305376 / KeysConverter.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
/*
*/
namespace System.Windows.Forms {
using System.Text;
using Microsoft.Win32;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Drawing;
using System.Diagnostics;
using System.Globalization;
using System.Reflection;
using System.Diagnostics.CodeAnalysis;
///
/// Provides a type converter to convert
///
public class KeysConverter : TypeConverter, IComparer {
private IDictionary keyNames;
private List displayOrder;
private StandardValuesCollection values;
private const Keys FirstDigit = System.Windows.Forms.Keys.D0;
private const Keys LastDigit = System.Windows.Forms.Keys.D9;
private const Keys FirstAscii = System.Windows.Forms.Keys.A;
private const Keys LastAscii = System.Windows.Forms.Keys.Z;
private const Keys FirstNumpadDigit = System.Windows.Forms.Keys.NumPad0;
private const Keys LastNumpadDigit = System.Windows.Forms.Keys.NumPad9;
private void AddKey(string key, Keys value ) {
keyNames[key] = value;
displayOrder.Add(key);
}
private void Initialize() {
keyNames = new Hashtable(34);
displayOrder = new List(34);
AddKey(SR.GetString(SR.toStringEnter), Keys.Return);
AddKey("F12", Keys.F12);
AddKey("F11", Keys.F11);
AddKey("F10", Keys.F10);
AddKey(SR.GetString(SR.toStringEnd), Keys.End);
AddKey(SR.GetString(SR.toStringControl), Keys.Control);
AddKey("F8", Keys.F8);
AddKey("F9", Keys.F9);
AddKey(SR.GetString(SR.toStringAlt), Keys.Alt);
AddKey("F4", Keys.F4);
AddKey("F5", Keys.F5);
AddKey("F6", Keys.F6);
AddKey("F7", Keys.F7);
AddKey("F1", Keys.F1);
AddKey("F2", Keys.F2);
AddKey("F3", Keys.F3);
AddKey(SR.GetString(SR.toStringPageDown), Keys.Next);
AddKey(SR.GetString(SR.toStringInsert), Keys.Insert);
AddKey(SR.GetString(SR.toStringHome), Keys.Home);
AddKey(SR.GetString(SR.toStringDelete), Keys.Delete);
AddKey(SR.GetString(SR.toStringShift), Keys.Shift);
AddKey(SR.GetString(SR.toStringPageUp), Keys.Prior);
AddKey(SR.GetString(SR.toStringBack), Keys.Back);
//new whidbey keys follow here...
// VSWhidbey 95006: Add string mappings for these values (numbers 0-9) so that the keyboard shortcuts
// will be displayed properly in menus.
AddKey("0", Keys.D0);
AddKey("1", Keys.D1);
AddKey("2", Keys.D2);
AddKey("3", Keys.D3);
AddKey("4", Keys.D4);
AddKey("5", Keys.D5);
AddKey("6", Keys.D6);
AddKey("7", Keys.D7);
AddKey("8", Keys.D8);
AddKey("9", Keys.D9);
}
///
/// Access to a lookup table of name/value pairs for keys. These are localized
/// names.
///
private IDictionary KeyNames {
get {
if (keyNames == null) {
Debug.Assert(displayOrder == null);
Initialize();
}
return keyNames;
}
}
private List DisplayOrder {
get {
if (displayOrder == null) {
Debug.Assert(keyNames == null);
Initialize();
}
return displayOrder;
}
}
///
/// Determines if this converter can convert an object in the given source
/// type to the native type of the converter.
///
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) {
if (sourceType == typeof(string) || sourceType == typeof(Enum[])) {
return true;
}
return base.CanConvertFrom(context, sourceType);
}
///
/// Gets a value indicating whether this converter can
/// convert an object to the given destination type using the context.
///
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) {
if (destinationType == typeof(Enum[])) {
return true;
}
return base.CanConvertTo(context, destinationType);
}
///
/// Compares two key values for equivalence.
///
public int Compare(object a, object b) {
return String.Compare(ConvertToString(a), ConvertToString(b), false, CultureInfo.InvariantCulture);
}
///
/// Converts the given object to the converter's native type.
///
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
if (value is string) {
string text = ((string)value).Trim();
if (text.Length == 0) {
return null;
}
else {
// Parse an array of key tokens.
//
string[] tokens = text.Split(new char[] {'+'});
for (int i = 0; i < tokens.Length; i++) {
tokens[i] = tokens[i].Trim();
}
// Now lookup each key token in our key hashtable.
//
Keys key = (Keys)0;
bool foundKeyCode = false;
for (int i = 0; i < tokens.Length; i++) {
object obj = KeyNames[tokens[i]];
if (obj == null) {
// Key was not found in our table. See if it is a valid value in
// the Keys enum.
//
obj = Enum.Parse(typeof(Keys), tokens[i]);
}
if (obj != null) {
Keys currentKey = (Keys)obj;
if ((currentKey & Keys.KeyCode) != 0) {
// We found a match. If we have previously found a
// key code, then check to see that this guy
// isn't a key code (it is illegal to have, say,
// "A + B"
//
if (foundKeyCode) {
throw new FormatException(SR.GetString(SR.KeysConverterInvalidKeyCombination));
}
foundKeyCode = true;
}
// Now OR the key into our current key
//
key |= currentKey;
}
else {
// We did not match this key. Report this as an error too.
//
throw new FormatException(SR.GetString(SR.KeysConverterInvalidKeyName, tokens[i]));
}
}
return (object)key;
}
}
else if (value is Enum[]) {
long finalValue = 0;
foreach(Enum e in (Enum[])value) {
finalValue |= Convert.ToInt64(e, CultureInfo.InvariantCulture);
}
return Enum.ToObject(typeof(Keys), finalValue);
}
return base.ConvertFrom(context, culture, value);
}
///
/// Converts the given object to another type. The most common types to convert
/// are to and from a string object. The default implementation will make a call
/// to ToString on the object if the object is valid and if the destination
/// type is string. If this cannot convert to the desitnation type, this will
/// throw a NotSupportedException.
///
[SuppressMessage("Microsoft.Performance", "CA1803:AvoidCostlyCallsWherePossible")]
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) {
if (destinationType == null) {
throw new ArgumentNullException("destinationType");
}
if (value is Keys || value is int) {
bool asString = destinationType == typeof(string);
bool asEnum = false;
if (!asString) asEnum = destinationType == typeof(Enum[]);
if (asString || asEnum) {
Keys key = (Keys)value;
bool added = false;
ArrayList terms = new ArrayList();
Keys modifiers = (key & Keys.Modifiers);
// First, iterate through and do the modifiers. These are
// additive, so we support things like Ctrl + Alt
//
for (int i = 0; i < DisplayOrder.Count; i++) {
string keyString = (string)DisplayOrder[i];
Keys keyValue = (Keys)keyNames[keyString];
if (((int)(keyValue) & (int)modifiers) != 0) {
if (asString) {
if (added) {
terms.Add("+");
}
terms.Add((string)keyString);
}
else {
terms.Add(keyValue);
}
added = true;
}
}
// Now reset and do the key values. Here, we quit if
// we find a match.
//
Keys keyOnly = (key & Keys.KeyCode);
bool foundKey = false;
if (added && asString) {
terms.Add("+");
}
for (int i = 0; i < DisplayOrder.Count; i++) {
string keyString = (string)DisplayOrder[i];
Keys keyValue = (Keys)keyNames[keyString];
if (keyValue.Equals(keyOnly)) {
if (asString) {
terms.Add((string)keyString);
}
else {
terms.Add(keyValue);
}
added = true;
foundKey = true;
break;
}
}
// Finally, if the key wasn't in our list, add it to
// the end anyway. Here we just pull the key value out
// of the enum.
//
if (!foundKey && Enum.IsDefined(typeof(Keys), (int)keyOnly)) {
if (asString) {
terms.Add(((Enum)keyOnly).ToString());
}
else {
terms.Add((Enum)keyOnly);
}
}
if (asString) {
StringBuilder b = new StringBuilder(32);
foreach(string t in terms) {
b.Append(t);
}
return b.ToString();
}
else {
return (Enum[])terms.ToArray(typeof(Enum));
}
}
}
return base.ConvertTo(context, culture, value, destinationType);
}
///
/// Retrieves a collection containing a set of standard values
/// for the data type this validator is designed for. This
/// will return null if the data type does not support a
/// standard set of values.
///
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) {
if (values == null) {
ArrayList list = new ArrayList();
ICollection keys = KeyNames.Values;
foreach (object o in keys) {
list.Add(o);
}
list.Sort(this);
values = new StandardValuesCollection(list.ToArray());
}
return values;
}
///
/// Determines if the list of standard values returned from
/// GetStandardValues is an exclusive list. If the list
/// is exclusive, then no other values are valid, such as
/// in an enum data type. If the list is not exclusive,
/// then there are other valid values besides the list of
/// standard values GetStandardValues provides.
///
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) {
return false;
}
///
/// Determines if this object supports a standard set of values
/// that can be picked from a list.
///
public override bool GetStandardValuesSupported(ITypeDescriptorContext context) {
return true;
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
/*
*/
namespace System.Windows.Forms {
using System.Text;
using Microsoft.Win32;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Drawing;
using System.Diagnostics;
using System.Globalization;
using System.Reflection;
using System.Diagnostics.CodeAnalysis;
///
/// Provides a type converter to convert
///
public class KeysConverter : TypeConverter, IComparer {
private IDictionary keyNames;
private List displayOrder;
private StandardValuesCollection values;
private const Keys FirstDigit = System.Windows.Forms.Keys.D0;
private const Keys LastDigit = System.Windows.Forms.Keys.D9;
private const Keys FirstAscii = System.Windows.Forms.Keys.A;
private const Keys LastAscii = System.Windows.Forms.Keys.Z;
private const Keys FirstNumpadDigit = System.Windows.Forms.Keys.NumPad0;
private const Keys LastNumpadDigit = System.Windows.Forms.Keys.NumPad9;
private void AddKey(string key, Keys value ) {
keyNames[key] = value;
displayOrder.Add(key);
}
private void Initialize() {
keyNames = new Hashtable(34);
displayOrder = new List(34);
AddKey(SR.GetString(SR.toStringEnter), Keys.Return);
AddKey("F12", Keys.F12);
AddKey("F11", Keys.F11);
AddKey("F10", Keys.F10);
AddKey(SR.GetString(SR.toStringEnd), Keys.End);
AddKey(SR.GetString(SR.toStringControl), Keys.Control);
AddKey("F8", Keys.F8);
AddKey("F9", Keys.F9);
AddKey(SR.GetString(SR.toStringAlt), Keys.Alt);
AddKey("F4", Keys.F4);
AddKey("F5", Keys.F5);
AddKey("F6", Keys.F6);
AddKey("F7", Keys.F7);
AddKey("F1", Keys.F1);
AddKey("F2", Keys.F2);
AddKey("F3", Keys.F3);
AddKey(SR.GetString(SR.toStringPageDown), Keys.Next);
AddKey(SR.GetString(SR.toStringInsert), Keys.Insert);
AddKey(SR.GetString(SR.toStringHome), Keys.Home);
AddKey(SR.GetString(SR.toStringDelete), Keys.Delete);
AddKey(SR.GetString(SR.toStringShift), Keys.Shift);
AddKey(SR.GetString(SR.toStringPageUp), Keys.Prior);
AddKey(SR.GetString(SR.toStringBack), Keys.Back);
//new whidbey keys follow here...
// VSWhidbey 95006: Add string mappings for these values (numbers 0-9) so that the keyboard shortcuts
// will be displayed properly in menus.
AddKey("0", Keys.D0);
AddKey("1", Keys.D1);
AddKey("2", Keys.D2);
AddKey("3", Keys.D3);
AddKey("4", Keys.D4);
AddKey("5", Keys.D5);
AddKey("6", Keys.D6);
AddKey("7", Keys.D7);
AddKey("8", Keys.D8);
AddKey("9", Keys.D9);
}
///
/// Access to a lookup table of name/value pairs for keys. These are localized
/// names.
///
private IDictionary KeyNames {
get {
if (keyNames == null) {
Debug.Assert(displayOrder == null);
Initialize();
}
return keyNames;
}
}
private List DisplayOrder {
get {
if (displayOrder == null) {
Debug.Assert(keyNames == null);
Initialize();
}
return displayOrder;
}
}
///
/// Determines if this converter can convert an object in the given source
/// type to the native type of the converter.
///
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) {
if (sourceType == typeof(string) || sourceType == typeof(Enum[])) {
return true;
}
return base.CanConvertFrom(context, sourceType);
}
///
/// Gets a value indicating whether this converter can
/// convert an object to the given destination type using the context.
///
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) {
if (destinationType == typeof(Enum[])) {
return true;
}
return base.CanConvertTo(context, destinationType);
}
///
/// Compares two key values for equivalence.
///
public int Compare(object a, object b) {
return String.Compare(ConvertToString(a), ConvertToString(b), false, CultureInfo.InvariantCulture);
}
///
/// Converts the given object to the converter's native type.
///
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
if (value is string) {
string text = ((string)value).Trim();
if (text.Length == 0) {
return null;
}
else {
// Parse an array of key tokens.
//
string[] tokens = text.Split(new char[] {'+'});
for (int i = 0; i < tokens.Length; i++) {
tokens[i] = tokens[i].Trim();
}
// Now lookup each key token in our key hashtable.
//
Keys key = (Keys)0;
bool foundKeyCode = false;
for (int i = 0; i < tokens.Length; i++) {
object obj = KeyNames[tokens[i]];
if (obj == null) {
// Key was not found in our table. See if it is a valid value in
// the Keys enum.
//
obj = Enum.Parse(typeof(Keys), tokens[i]);
}
if (obj != null) {
Keys currentKey = (Keys)obj;
if ((currentKey & Keys.KeyCode) != 0) {
// We found a match. If we have previously found a
// key code, then check to see that this guy
// isn't a key code (it is illegal to have, say,
// "A + B"
//
if (foundKeyCode) {
throw new FormatException(SR.GetString(SR.KeysConverterInvalidKeyCombination));
}
foundKeyCode = true;
}
// Now OR the key into our current key
//
key |= currentKey;
}
else {
// We did not match this key. Report this as an error too.
//
throw new FormatException(SR.GetString(SR.KeysConverterInvalidKeyName, tokens[i]));
}
}
return (object)key;
}
}
else if (value is Enum[]) {
long finalValue = 0;
foreach(Enum e in (Enum[])value) {
finalValue |= Convert.ToInt64(e, CultureInfo.InvariantCulture);
}
return Enum.ToObject(typeof(Keys), finalValue);
}
return base.ConvertFrom(context, culture, value);
}
///
/// Converts the given object to another type. The most common types to convert
/// are to and from a string object. The default implementation will make a call
/// to ToString on the object if the object is valid and if the destination
/// type is string. If this cannot convert to the desitnation type, this will
/// throw a NotSupportedException.
///
[SuppressMessage("Microsoft.Performance", "CA1803:AvoidCostlyCallsWherePossible")]
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) {
if (destinationType == null) {
throw new ArgumentNullException("destinationType");
}
if (value is Keys || value is int) {
bool asString = destinationType == typeof(string);
bool asEnum = false;
if (!asString) asEnum = destinationType == typeof(Enum[]);
if (asString || asEnum) {
Keys key = (Keys)value;
bool added = false;
ArrayList terms = new ArrayList();
Keys modifiers = (key & Keys.Modifiers);
// First, iterate through and do the modifiers. These are
// additive, so we support things like Ctrl + Alt
//
for (int i = 0; i < DisplayOrder.Count; i++) {
string keyString = (string)DisplayOrder[i];
Keys keyValue = (Keys)keyNames[keyString];
if (((int)(keyValue) & (int)modifiers) != 0) {
if (asString) {
if (added) {
terms.Add("+");
}
terms.Add((string)keyString);
}
else {
terms.Add(keyValue);
}
added = true;
}
}
// Now reset and do the key values. Here, we quit if
// we find a match.
//
Keys keyOnly = (key & Keys.KeyCode);
bool foundKey = false;
if (added && asString) {
terms.Add("+");
}
for (int i = 0; i < DisplayOrder.Count; i++) {
string keyString = (string)DisplayOrder[i];
Keys keyValue = (Keys)keyNames[keyString];
if (keyValue.Equals(keyOnly)) {
if (asString) {
terms.Add((string)keyString);
}
else {
terms.Add(keyValue);
}
added = true;
foundKey = true;
break;
}
}
// Finally, if the key wasn't in our list, add it to
// the end anyway. Here we just pull the key value out
// of the enum.
//
if (!foundKey && Enum.IsDefined(typeof(Keys), (int)keyOnly)) {
if (asString) {
terms.Add(((Enum)keyOnly).ToString());
}
else {
terms.Add((Enum)keyOnly);
}
}
if (asString) {
StringBuilder b = new StringBuilder(32);
foreach(string t in terms) {
b.Append(t);
}
return b.ToString();
}
else {
return (Enum[])terms.ToArray(typeof(Enum));
}
}
}
return base.ConvertTo(context, culture, value, destinationType);
}
///
/// Retrieves a collection containing a set of standard values
/// for the data type this validator is designed for. This
/// will return null if the data type does not support a
/// standard set of values.
///
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) {
if (values == null) {
ArrayList list = new ArrayList();
ICollection keys = KeyNames.Values;
foreach (object o in keys) {
list.Add(o);
}
list.Sort(this);
values = new StandardValuesCollection(list.ToArray());
}
return values;
}
///
/// Determines if the list of standard values returned from
/// GetStandardValues is an exclusive list. If the list
/// is exclusive, then no other values are valid, such as
/// in an enum data type. If the list is not exclusive,
/// then there are other valid values besides the list of
/// standard values GetStandardValues provides.
///
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) {
return false;
}
///
/// Determines if this object supports a standard set of values
/// that can be picked from a list.
///
public override bool GetStandardValuesSupported(ITypeDescriptorContext context) {
return true;
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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