goog.Disposable | |
goog.events.EventTarget | goog.Disposable |
goog.events.KeyHandler | goog.events.EventTarget |
opt_element
: Element | Document=
The element or document to listen on.
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opt_capture
: boolean=
Whether to listen for browser events in
capture phase (defaults to false).
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Adds the proper key event listeners to the element.
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Removes the listeners that may exist.
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No description.
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Returns the element listened on for the real keyboard events.
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Handles the events on the element.
Arguments:
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Records the keycode for browsers that only returns the keycode for key up/
down events. For browser/key combinations that doesn't trigger a key pressed
event it also fires the patched key event.
Arguments:
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Clears the stored previous key value, resetting the key repeat status. Uses
-1 because the Safari 3 Windows beta reports 0 for certain keys (like Home
and End.)
Arguments:
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Resets the stored previous values. Needed to be called for webkit which will
not generate a key up for meta key operations. This should only be called
when having finished with repeat key possiblities.
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Use
#listen instead, when possible. Otherwise, use
goog.events.listen if you are passing Object
(instead of Function) as handler.
Adds an event listener to the event target. The same handler can only be
added once per the type. Even if you add the same handler multiple times
using the same type then it will only be called once when the event is
dispatched.
Arguments:
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Asserts that the event target instance is initialized properly.
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No description.
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Removes listeners from this object. Classes that extend EventTarget may
need to override this method in order to remove references to DOM Elements
and additional listeners.
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No description.
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No description.
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No description.
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Returns the parent of this event target to use for bubbling.
Returns: goog.events.EventTarget
The parent EventTarget or null if
there is no parent.
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No description.
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No description.
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No description.
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No description.
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Use
#unlisten instead, when possible. Otherwise, use
goog.events.unlisten if you are passing Object
(instead of Function) as handler.
Removes an event listener from the event target. The handler must be the
same object as the one added. If the handler has not been added then
nothing is done.
Arguments:
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Sets the parent of this event target to use for capture/bubble
mechanism.
Arguments:
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Sets the target to be used for
event.target when firing
event. Mainly used for testing. For example, see
goog.testing.events.mixinListenable .
Arguments:
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No description.
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No description.
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Invokes a callback function when this object is disposed. Callbacks are
invoked in the order in which they were added.
Arguments:
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Disposes of the object. If the object hasn't already been disposed of, calls
#disposeInternal . Classes that extend goog.Disposable should
override #disposeInternal in order to delete references to COM
objects, DOM nodes, and other disposable objects. Reentrant.
Returns: void
Nothing.
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Deletes or nulls out any references to COM objects, DOM nodes, or other
disposable objects. Classes that extend
goog.Disposable should
override this method.
Not reentrant. To avoid calling it twice, it must only be called from the
subclass' disposeInternal method. Everywhere else the public
dispose method must be used.
For example:
mypackage.MyClass = function() { mypackage.MyClass.base(this, 'constructor'); // Constructor logic specific to MyClass. ... }; goog.inherits(mypackage.MyClass, goog.Disposable); mypackage.MyClass.prototype.disposeInternal = function() { // Dispose logic specific to MyClass. ... // Call superclass's disposeInternal at the end of the subclass's, like // in C++, to avoid hard-to-catch issues. mypackage.MyClass.base(this, 'disposeInternal'); }; |
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Use
#isDisposed instead.
No description.
Returns: boolean
Whether the object has been disposed of.
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No description.
Returns: boolean
Whether the object has been disposed of.
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Associates a disposable object with this object so that they will be disposed
together.
Arguments:
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Alt key recorded for key down events. FF on Mac does not report the alt key
flag in the key press event, we need to record it in the key down phase.
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No description.
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This is the element that we will listen to the real keyboard events on.
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Keycode recorded for key down events. As most browsers don't report the
keycode in the key press event we need to record it in the key down phase.
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The key for the key down listener.
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The key for the key press listener.
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The key for the key up listener.
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Used to detect keyboard repeat events.
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The object to use for event.target. Useful when mixing in an
EventTarget to another object.
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No description.
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Maps of event type to an array of listeners.
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Parent event target, used during event bubbling.
TODO(user): Change this to goog.events.Listenable. This
currently breaks people who expect getParentEventTarget to return
goog.events.EventTarget.
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If true, the alt key flag is saved during the key down and reused when
handling the key press. FF on Mac does not set the alt flag in the key press
event.
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If true, the KeyEvent fires on keydown. Otherwise, it fires on keypress.
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An enumeration of key identifiers currently part of the W3C draft for DOM3
and their mappings to keyCodes.
http://www.w3.org/TR/DOM-Level-3-Events/keyset.html#KeySet-Set
This is currently supported in Safari and should be platform independent.
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An enumeration of key codes that Safari 2 does incorrectly
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No description.
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Enum type for the events fired by the key handler
Constants:
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