[flexcoders] Re: Keydownhandler fires twice for each keystroke
I found a little more information.
This undesireable feature, aka bug manifests itself only if you
make the combobox editable.
I removed the editable=true and the problem goes away.
Paul
--- In flexcoders@yahoogroups.com, aceoohay [EMAIL PROTECTED] wrote:
Since creating a test case would be challenging I am posting the
component ValidatedComboBox.as. The problem I am having is that it
appears to call the keyDownHandler(event:KeyboardEvent):void
function
twice for each keystroke. I have commented out most of that
function's code, as it used to handle all input there but now I
only
handle the backspace there this is a patch to get it to function
somewhat.
package Classes.Input
{
import flash.events.Event;
import mx.controls.ComboBox;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.events.FocusEvent;
import flash.events.MouseEvent;
/**
* Create an extended version of the ComboBox that allows the
definition of invalid indexes.
*
* The developer defines one or more invalid indexes in a
comma separated list using the property badIndexes.
* Most commonly the developer would specify 0 which is the
first element in the list.
*
* New properties are;
* badIndexes - A string that allows the developer to define
a comma separated list of invalid indexes.
* isVald - A boolean that defines whether the field is valid.
*
* New Methods are;
* validateData() - This method checks if the data is valid
and returns true if valid, false if invalid.
*
*/
public class ValidatedComboBox extends ComboBox
{
/** Bad indexes - A comma separated list of invalid
indexes. */
private var _badIndexes:String = ;
/** Has this field passed validation */
private var _isValid:Boolean = true;
/** value */
private var _value:Object;
/** should we validate data */
private var _doValidateData:Boolean = true;
/** promptLabel */
private var _promptLabel:String;
/** toolTipField */
private var _toolTipField:String = ;
/** Default value A literal that represents the value
that will replace the value
* property when the method setDefault is executed */
private var _defaultValue:String = ;
private var _eventHandler:Function = this
[checkData];
private var _typedText:String = ;
public function ValidatedComboBox()
{
//TODO: implement function
super();
this.addEventListener
(Event.CHANGE,_eventHandler)
}
/**
* Add a new inspectable property so the user can
enter the Bad Indexesn
* at authortime via the properties panel.
*
* @return the specified bad indexes
*/
[Inspectable( type=String , defaultValue= )]
public function get badIndexes():String
{
return this._badIndexes;
}
/**
* Sets the the specified bad indexes
*/
public function set badIndexes(
badIndexes:String ):void
{
this._badIndexes = badIndexes;
}
/**
* Add a new inspectable property so the user can
enter the promptLabel for the field
* at authortime via the properties panel.
*
* @return the specified promptLabel
*/
[Inspectable( type=String , defaultValue= )]
public function get promptLabel():String
{
return this._promptLabel;
}
/**
* Sets the the specified promptLabel
*/
public function set promptLabel(
promptLabel:String ):void
{
this._promptLabel = promptLabel;
}
/**
* Add a new inspectable property so the user can
specify the whether this field should be validated
* via the properties panel.
*
* @return the specified validate data flag.
*/
[Inspectable( type=Boolean , defaultValue=false,
enumeration=true,false )]
public function get doValidateData():Boolean
{
RE: [flexcoders] Re: Keydownhandler fires twice for each keystroke
If you override keyDownHandler, you shouldn't need to call addEventListener
since the base class will.
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of aceoohay
Sent: Saturday, August 30, 2008 12:07 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Keydownhandler fires twice for each keystroke
I found a little more information.
This undesireable feature, aka bug manifests itself only if you
make the combobox editable.
I removed the editable=true and the problem goes away.
Paul
--- In flexcoders@yahoogroups.commailto:flexcoders%40yahoogroups.com,
aceoohay [EMAIL PROTECTED] wrote:
Since creating a test case would be challenging I am posting the
component ValidatedComboBox.as. The problem I am having is that it
appears to call the keyDownHandler(event:KeyboardEvent):void
function
twice for each keystroke. I have commented out most of that
function's code, as it used to handle all input there but now I
only
handle the backspace there this is a patch to get it to function
somewhat.
package Classes.Input
{
import flash.events.Event;
import mx.controls.ComboBox;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.events.FocusEvent;
import flash.events.MouseEvent;
/**
* Create an extended version of the ComboBox that allows the
definition of invalid indexes.
*
* The developer defines one or more invalid indexes in a
comma separated list using the property badIndexes.
* Most commonly the developer would specify 0 which is the
first element in the list.
*
* New properties are;
* badIndexes - A string that allows the developer to define
a comma separated list of invalid indexes.
* isVald - A boolean that defines whether the field is valid.
*
* New Methods are;
* validateData() - This method checks if the data is valid
and returns true if valid, false if invalid.
*
*/
public class ValidatedComboBox extends ComboBox
{
/** Bad indexes - A comma separated list of invalid
indexes. */
private var _badIndexes:String = ;
/** Has this field passed validation */
private var _isValid:Boolean = true;
/** value */
private var _value:Object;
/** should we validate data */
private var _doValidateData:Boolean = true;
/** promptLabel */
private var _promptLabel:String;
/** toolTipField */
private var _toolTipField:String = ;
/** Default value A literal that represents the value
that will replace the value
* property when the method setDefault is executed */
private var _defaultValue:String = ;
private var _eventHandler:Function = this
[checkData];
private var _typedText:String = ;
public function ValidatedComboBox()
{
//TODO: implement function
super();
this.addEventListener
(Event.CHANGE,_eventHandler)
}
/**
* Add a new inspectable property so the user can
enter the Bad Indexesn
* at authortime via the properties panel.
*
* @return the specified bad indexes
*/
[Inspectable( type=String , defaultValue= )]
public function get badIndexes():String
{
return this._badIndexes;
}
/**
* Sets the the specified bad indexes
*/
public function set badIndexes(
badIndexes:String ):void
{
this._badIndexes = badIndexes;
}
/**
* Add a new inspectable property so the user can
enter the promptLabel for the field
* at authortime via the properties panel.
*
* @return the specified promptLabel
*/
[Inspectable( type=String , defaultValue= )]
public function get promptLabel():String
{
return this._promptLabel;
}
/**
* Sets the the specified promptLabel
*/
public function set promptLabel(
promptLabel:String ):void
{
this._promptLabel = promptLabel;
}
/**
* Add a new inspectable property so the user can
specify the whether this field should be validated
* via the properties panel.
*
* @return the specified validate data flag.
*/
[Inspectable( type=Boolean , defaultValue=false,
enumeration=true,false )]
public function get doValidateData():Boolean
{
return this._doValidateData;
}
/**
* Sets the specified validate data flag.
*/
public function set doValidateData(
doValidateData:Boolean ):void
{
this._doValidateData = doValidateData;
}
/**
* Add a new inspectable property so the user can
enter the tool Tip Field for the field
* at authortime via the properties panel.
*
* @return the specified toolTipField
*/
[Inspectable( type=String , defaultValue= )]
public function get toolTipField():String
{
return this._toolTipField;
}
/**
* Sets the the specified toolTipField
*/
public function set toolTipField(
toolTipField:String ):void
{
this._toolTipField =toolTipField;
}
/**
* Add a new inspectable property so the user can
enter a Default value
* at authortime via the properties panel.
*
* @return the specified Maximum value
*/
[Inspectable( type=String , defaultValue= )]
public function get defaultValue():String
{
return this._defaultValue;
}
/**
* Sets the specified Default value
*/
public function set defaultValue
[flexcoders] Re: Keydownhandler fires twice for each keystroke
Since creating a test case would be challenging I am posting the
component ValidatedComboBox.as. The problem I am having is that it
appears to call the keyDownHandler(event:KeyboardEvent):void function
twice for each keystroke. I have commented out most of that
function's code, as it used to handle all input there but now I only
handle the backspace there this is a patch to get it to function
somewhat.
package Classes.Input
{
import flash.events.Event;
import mx.controls.ComboBox;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.events.FocusEvent;
import flash.events.MouseEvent;
/**
* Create an extended version of the ComboBox that allows the
definition of invalid indexes.
*
* The developer defines one or more invalid indexes in a
comma separated list using the property badIndexes.
* Most commonly the developer would specify 0 which is the
first element in the list.
*
* New properties are;
* badIndexes - A string that allows the developer to define
a comma separated list of invalid indexes.
* isVald - A boolean that defines whether the field is valid.
*
* New Methods are;
* validateData() - This method checks if the data is valid
and returns true if valid, false if invalid.
*
*/
public class ValidatedComboBox extends ComboBox
{
/** Bad indexes - A comma separated list of invalid
indexes. */
private var _badIndexes:String = ;
/** Has this field passed validation */
private var _isValid:Boolean = true;
/** value */
private var _value:Object;
/** should we validate data */
private var _doValidateData:Boolean = true;
/** promptLabel */
private var _promptLabel:String;
/** toolTipField */
private var _toolTipField:String = ;
/** Default value A literal that represents the value
that will replace the value
* property when the method setDefault is executed */
private var _defaultValue:String = ;
private var _eventHandler:Function = this
[checkData];
private var _typedText:String = ;
public function ValidatedComboBox()
{
//TODO: implement function
super();
this.addEventListener
(Event.CHANGE,_eventHandler)
}
/**
* Add a new inspectable property so the user can
enter the Bad Indexesn
* at authortime via the properties panel.
*
* @return the specified bad indexes
*/
[Inspectable( type=String , defaultValue= )]
public function get badIndexes():String
{
return this._badIndexes;
}
/**
* Sets the the specified bad indexes
*/
public function set badIndexes(
badIndexes:String ):void
{
this._badIndexes = badIndexes;
}
/**
* Add a new inspectable property so the user can
enter the promptLabel for the field
* at authortime via the properties panel.
*
* @return the specified promptLabel
*/
[Inspectable( type=String , defaultValue= )]
public function get promptLabel():String
{
return this._promptLabel;
}
/**
* Sets the the specified promptLabel
*/
public function set promptLabel(
promptLabel:String ):void
{
this._promptLabel = promptLabel;
}
/**
* Add a new inspectable property so the user can
specify the whether this field should be validated
* via the properties panel.
*
* @return the specified validate data flag.
*/
[Inspectable( type=Boolean , defaultValue=false,
enumeration=true,false )]
public function get doValidateData():Boolean
{
return this._doValidateData;
}
/**
* Sets the specified validate data flag.
*/
[flexcoders] Re: Keydownhandler fires twice for each keystroke
have you called addEventListener twice?
--- In flexcoders@yahoogroups.com, aceoohay [EMAIL PROTECTED] wrote:
nope...
After you posted I inserted;
event.preventDefault();
At the beginning of the function with no effect.
Like I said it seems as though the keyDownHandler function is called
twice for each keystroke.
Paul
--- In flexcoders@yahoogroups.com, Tracy Spratt tspratt@
wrote:
Event.preventDefault?
Tracy
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of aceoohay
Sent: Monday, August 18, 2008 4:46 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Keydownhandler fires twice for each keystroke
Flex 2.0.1
I am trying to capture keystrokes in the keyDownHandler of a
ComboBox and it appears to be firing twice for each keystroke.
Any ideas on what might cause this?
The code below works except that when the user strikes a
backSpace
it removes two characters from _typedText.
Paul
override protected function textInput_changeHandler
(event:Event):void
{
_typedText += this.textInput.text;
if (!findFirstItem(_typedText))
{
_typedText = _typedText.substr
(0,_typedText.length -1);
findFirstItem(_typedText);
}
}
override protected function keyDownHandler
(event:KeyboardEvent):void
{
if(!event.ctrlKey)
{
if (event.keyCode ==
Keyboard.BACKSPACE || event.keyCode == Keyboard.DELETE)
{
_typedText =
_typedText.substr(0,_typedText.length -1);
findFirstItem(_typedText);
}
}
}
[flexcoders] Re: Keydownhandler fires twice for each keystroke
nope...
After you posted I inserted;
event.preventDefault();
At the beginning of the function with no effect.
Like I said it seems as though the keyDownHandler function is called
twice for each keystroke.
Paul
--- In flexcoders@yahoogroups.com, Tracy Spratt [EMAIL PROTECTED]
wrote:
Event.preventDefault?
Tracy
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of aceoohay
Sent: Monday, August 18, 2008 4:46 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Keydownhandler fires twice for each keystroke
Flex 2.0.1
I am trying to capture keystrokes in the keyDownHandler of a
ComboBox and it appears to be firing twice for each keystroke.
Any ideas on what might cause this?
The code below works except that when the user strikes a
backSpace
it removes two characters from _typedText.
Paul
override protected function textInput_changeHandler
(event:Event):void
{
_typedText += this.textInput.text;
if (!findFirstItem(_typedText))
{
_typedText = _typedText.substr
(0,_typedText.length -1);
findFirstItem(_typedText);
}
}
override protected function keyDownHandler
(event:KeyboardEvent):void
{
if(!event.ctrlKey)
{
if (event.keyCode ==
Keyboard.BACKSPACE || event.keyCode == Keyboard.DELETE)
{
_typedText =
_typedText.substr(0,_typedText.length -1);
findFirstItem(_typedText);
}
}
}
RE: [flexcoders] Re: Keydownhandler fires twice for each keystroke
keyDown is not cancelable.
Post a test case so we can see how you wired it up.
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of aceoohay
Sent: Monday, August 18, 2008 3:01 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Keydownhandler fires twice for each keystroke
nope...
After you posted I inserted;
event.preventDefault();
At the beginning of the function with no effect.
Like I said it seems as though the keyDownHandler function is called
twice for each keystroke.
Paul
--- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com
, Tracy Spratt [EMAIL PROTECTED]
wrote:
Event.preventDefault?
Tracy
From: flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com
[mailto:flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com
] On
Behalf Of aceoohay
Sent: Monday, August 18, 2008 4:46 PM
To: flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com
Subject: [flexcoders] Keydownhandler fires twice for each keystroke
Flex 2.0.1
I am trying to capture keystrokes in the keyDownHandler of a
ComboBox and it appears to be firing twice for each keystroke.
Any ideas on what might cause this?
The code below works except that when the user strikes a
backSpace
it removes two characters from _typedText.
Paul
override protected function textInput_changeHandler
(event:Event):void
{
_typedText += this.textInput.text;
if (!findFirstItem(_typedText))
{
_typedText = _typedText.substr
(0,_typedText.length -1);
findFirstItem(_typedText);
}
}
override protected function keyDownHandler
(event:KeyboardEvent):void
{
if(!event.ctrlKey)
{
if (event.keyCode ==
Keyboard.BACKSPACE || event.keyCode == Keyboard.DELETE)
{
_typedText =
_typedText.substr(0,_typedText.length -1);
findFirstItem(_typedText);
}
}
}
