| Package | flash.net |
| Class | public final class FileFilter |
| Inheritance | FileFilter  Object |
| Language Version: | ActionScript 3.0 |
| Runtime Versions: | AIR 1.0, Flash Player 9 |
FileReference.browse()
method, the FileReferenceList.browse() method is called or a
browse method of a File, FileReference, or FileReferenceList object is called.
FileFilter instances are passed as a value for the optional typeFilter parameter to the method.
If you use a FileFilter instance, extensions and file types that aren't specified in the FileFilter instance
are filtered out; that is, they are not available to the user for selection.
If no FileFilter object is passed to the method, all files are shown in the dialog box.
You can use FileFilter instances in one of two ways:
- A description with file extensions only
- A description with file extensions and Macintosh file types
The two formats are not interchangeable within a single call to the browse method. You must use one or the other.
You can pass one or more FileFilter instances to the browse method, as shown in the following:
var imagesFilter:FileFilter = new FileFilter("Images", "*.jpg;*.gif;*.png");
var docFilter:FileFilter = new FileFilter("Documents", "*.pdf;*.doc;*.txt");
var myFileReference:FileReference = new FileReference();
myFileReference.browse([imagesFilter, docFilter]);
Or in an AIR application:
var imagesFilter:FileFilter = new FileFilter("Images", "*.jpg;*.gif;*.png");
var docFilter:FileFilter = new FileFilter("Documents", "*.pdf;*.doc;*.txt");
var myFile:File = new File();
myFile.browseForOpen("Open", [imagesFilter, docFilter]);
The list of extensions in the FileFilter.extension property
is used to filter the files shown in the file browsing dialog. The list is not actually
displayed in the dialog box; to display the file types
for users, you must list the file types in the description string as well as in the extension
list. The description string is displayed in the dialog box in Windows and Linux.
(It is not used on the Macintosh®.) On the Macintosh, if you supply a list of Macintosh file types,
that list is used to filter the files. If not, the list of file extensions is used.
Hide Inherited Public Properties
Show Inherited Public Properties| Property | Defined By | ||
|---|---|---|---|
 | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| description : String
The description string for the filter. | FileFilter | ||
| extension : String
A list of file extensions. | FileFilter | ||
| macType : String
A list of Macintosh file types. | FileFilter | ||
| Method | Defined By | ||
|---|---|---|---|
Creates a new FileFilter instance. | FileFilter | ||
|
Indicates whether an object has a specified property defined. | Object | |
|
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
|
Indicates whether the specified property exists and is enumerable. | Object | |
|
Sets the availability of a dynamic property for loop operations. | Object | |
|
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
|
Returns the string representation of the specified object. | Object | |
|
Returns the primitive value of the specified object. | Object | |
description | property |
description:String| Language Version: | ActionScript 3.0 |
| Runtime Versions: | AIR 1.0, Flash Player 9 |
The description string for the filter. The description
is visible to the user in the dialog box that opens
when FileReference.browse()
or FileReferenceList.browse() is called.
The description string contains a string, such as
"Images (*.gif, *.jpg, *.png)", that can
help instruct the user on what file types can be uploaded
or downloaded. Note that the actual file types that are supported by
this FileReference object are stored in the extension
property.
Implementation
public function get description():String public function set description(value:String):voidextension | property |
extension:String| Language Version: | ActionScript 3.0 |
| Runtime Versions: | AIR 1.0, Flash Player 9 |
A list of file extensions. This list indicates the types of files
that you want to show in the file-browsing dialog box. (The list
is not visible to the user; the user sees only the value of the
description property.) The extension property contains
a semicolon-delimited list of file extensions,
with a wildcard (*) preceding each extension, as shown
in the following string: "*.jpg;*.gif;*.png".
Implementation
public function get extension():String public function set extension(value:String):voidmacType | property |
macType:String| Language Version: | ActionScript 3.0 |
| Runtime Versions: | AIR 1.0, Flash Player 9 |
A list of Macintosh file types. This list indicates the types of files
that you want to show in the file-browsing dialog box. (This list
itself is not visible to the user; the user sees only the value of the
description property.) The macType property contains
a semicolon-delimited list of Macintosh file types, as shown
in the following string: "JPEG;jp2_;GIFF".
Implementation
public function get macType():String public function set macType(value:String):voidFileFilter | () | Constructor |
public function FileFilter(description:String, extension:String, macType:String = null)| Language Version: | ActionScript 3.0 |
| Runtime Versions: | AIR 1.0, Flash Player 9 |
Creates a new FileFilter instance.
Parametersdescription:String — The description string that is visible to users when they select files for uploading.
| |
extension:String — A list of file extensions that indicate which file formats are visible to users
when they select files for uploading.
| |
macType:String (default = null)null.
|
Example ( How to use this example )
var buttonShape:Shape = new Shape();
buttonShape.graphics.beginFill(0x336699);
buttonShape.graphics.drawCircle(50, 50, 25);
var button = new SimpleButton(buttonShape, buttonShape, buttonShape, buttonShape);
addChild(button);
var fileRef:FileReference= new FileReference();
button.addEventListener(MouseEvent.CLICK, onButtonClick);
function onButtonClick(e:MouseEvent):void {
fileRef.browse([new FileFilter("Images", "*.jpg;*.gif;*.png")]);
fileRef.addEventListener(Event.SELECT, onFileSelected);
}
function onFileSelected(e:Event):void {
fileRef.addEventListener(Event.COMPLETE, onFileLoaded);
fileRef.load();
}
function onFileLoaded(e:Event):void {
var loader:Loader = new Loader();
loader.loadBytes(e.target.data);
addChild(loader);
}
Mon Apr 10 2017, 12:28 PM -07:00