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html5/spec Overview.html,1.3617,1.3618

From: Ian Hickson via cvs-syncmail <cvsmail@w3.org>
Date: Wed, 06 Jan 2010 11:04:27 +0000
To: public-html-commits@w3.org
Message-Id: <E1NSTgh-0001hu-N0@lionel-hutz.w3.org>
Update of /sources/public/html5/spec
In directory hutz:/tmp/cvs-serv6524

Modified Files:
	Overview.html 
Log Message:
Lots of rewriting of the event handler attributes stuff: remove mention of namespaces, clarify some notes, clarify when the listeners are registered, clean up some class=impl usage. (whatwg r4521)

Index: Overview.html
===================================================================
RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.3617
retrieving revision 1.3618
diff -u -d -r1.3617 -r1.3618
--- Overview.html	6 Jan 2010 10:52:14 -0000	1.3617
+++ Overview.html	6 Jan 2010 11:04:24 -0000	1.3618
@@ -43458,29 +43458,31 @@
   <a href="#browsing-context">browsing context</a>, the corresponding event handler is
   not changed.</p><!-- v2: we should probably support HTML4's Content-Script-Type header here. --><div class="impl">
 
-  <hr><p>All <a href="#event-handlers">event handlers</a> on an element, whether
-  set to null or to a <code><a href="#function">Function</a></code> object, must be registered
-  as event listeners on the element, as if the <code title="dom-EventTarget-addEventListenerNS">addEventListenerNS()</code>
-  method on the <code>Element</code> object's <code>EventTarget</code>
-  interface had been invoked when the event handler's
-  element or object was created, with the event type (<var title="dom-event-type">type</var> argument) equal to the type
-  corresponding to the event handler (the <dfn id="event-handler-event-type">event handler
-  event type</dfn>), the namespace (<var title="dom-event-namespaceURI">namespaceURI</var> argument) set to
-  null, the listener set to be a target and bubbling phase listener
-  (<var title="dom-event-useCapture">useCapture</var> argument set to
-  false), the event group set to the default group (<var title="dom-event-evtGroup">evtGroup</var> argument set to null), and
-  the event listener itself (<var title="dom-event-listener">listener</var> argument) set to do
+  <hr><p>All <a href="#event-handlers">event handlers</a> on an object, whether an element
+  or some other object, and whether set to null or to a
+  <code><a href="#function">Function</a></code> object, must be registered as event listeners
+  on the object when it is created, as if the <code title="dom-EventTarget-addEventListener">addEventListener()</code>
+  method on the object's <code>EventTarget</code> interface had been
+  invoked, with the event type (<var title="dom-event-type">type</var>
+  argument) equal to the type corresponding to the event handler (the
+  <dfn id="event-handler-event-type">event handler event type</dfn>), the listener set to be a
+  target and bubbling phase listener (<var title="dom-event-useCapture">useCapture</var> argument set to
+  false), and the event listener itself (<var title="dom-event-listener">listener</var> argument) set to do
   nothing while the event handler's value is not a
   <code><a href="#function">Function</a></code> object, and set to invoke the <code title="dom-function-call"><a href="#dom-function-call">call()</a></code> callback of the
-  <code><a href="#function">Function</a></code> object associated with the event handler otherwise.</p>
+  <code><a href="#function">Function</a></code> object associated with the event handler
+  otherwise.</p>
+
+  </div><p class="note"><a href="#event-handlers">Event handlers</a> <span class="impl">therefore</span> always fire before event listeners
+  attached using <code title="dom-EventTarget-addEventListener">addEventListener()</code>.<div class="impl">
 
   <p class="note">The <var title="dom-event-listener">listener</var>
   argument is emphatically <em>not</em> the <a href="#event-handlers" title="event
   handlers">event handler</a> itself.</p>
 
   <p class="note">The interfaces implemented by the event object do
-  not affect whether an <a href="#event-handlers" title="event handlers">event
-  handler</a> is used or not.</p>
+  not influence whether an <a href="#event-handlers" title="event handlers">event
+  handler</a> is triggered or not.</p>
 
   <p>When an <a href="#event-handlers" title="event handlers">event handler</a>'s
   <code><a href="#function">Function</a></code> object is invoked, its <code title="dom-function-call"><a href="#dom-function-call">call()</a></code> callback must be invoked
@@ -43506,22 +43508,18 @@
    <dd><p>If the return value is a boolean with the value false, then
    the event must be canceled.</dd>
 
-  </dl><!-- IE actually uncancels the event if the function returns true --><hr><p>The <code><a href="#function">Function</a></code> interface represents a function in the
+  </dl></div><!-- IE actually uncancels the event if the function returns true --><hr><p>The <code><a href="#function">Function</a></code> interface represents a function in the
   scripting language being used. It is represented in IDL as
-  follows:</p>
-
-  <pre class="idl">[Callback=FunctionOnly, NoInterfaceObject]
+  follows:<pre class="idl">[Callback=FunctionOnly, NoInterfaceObject]
 interface <dfn id="function">Function</dfn> {
   any <a href="#dom-function-call" title="dom-function-call">call</a>(in any... arguments);
-};</pre>
-
-  <p>The <dfn id="dom-function-call" title="dom-function-call"><code>call(...)</code></dfn>
-  method is the object's callback.</p>
-
-  <p class="note">In JavaScript, any <code title="">Function</code>
-  object implements this interface.</p>
-
-  </div><div class="impl">
+};</pre><p>The <dfn id="dom-function-call" title="dom-function-call"><code>call(...)</code></dfn>
+  method is the object's callback.<p class="note">In JavaScript, any <code title="">Function</code>
+  object implements this interface.<p>The return value of the function is affects whether the event is
+  canceled or not: <span class="impl">as described above,</span> if
+  the return value is false, the event is canceled (except for <code class="event-mouseover">mouseover</code> events, where the return
+  value has to be true to cancel the event). With <code title="event-beforeunload">beforeunload</code> events, the value is
+  instead used to determine the message to show the user.<div class="impl">
 
   <h5 id="event-handlers-on-elements-document-objects-and-window-objects"><span class="secno">6.5.6.2 </span>Event handlers on elements, <code>Document</code> objects, and <code><a href="#window">Window</a></code> objects</h5>
 
Received on Wednesday, 6 January 2010 11:04:29 GMT

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