Specify the textInput event

Fixes #353

sections/legacy-event-types.txt

@@ -51,6 +51,7 @@ completeness.
 +| keypress					   | Sync	| Yes	   | <code>Element</code>					  | KeyboardEvent	 | Yes		  | Yes		  | Varies: launch <a>text composition system</a>; |
  |							   |		|		   |										  |					 |			  |			  | EVENT{blur} and EVENT{focus} events;		   |
  |							   |		|		   |										  |					 |			  |			  | EVENT{DOMActivate} event; other event		   |
++| textInput		   | Sync	| Yes	   | <code>Element</code>					  | TextEvent	 | Yes		  | Yes		  | EVENT{input} event |
 ++-----------------------------+--------+----------+------------------------------------------+------------------+------------+------------+------------------------------------------------+
 
 
@@ -517,6 +518,118 @@ completeness.
 		++---+-------------+------------------------+---------------------+--------------------------------+
 		</div>
 
+<h3 id="legacy-textevent-events">Legacy {{TextEvent}} events</h3>
+
+<h4 id="interface-textevent">Interface TextEvent</h4>
+
+
+	<pre class="idl">
+	[Exposed=Window]
+	interface TextEvent : Event {
+		readonly attribute DOMString data;
+		void initTextEvent(DOMString type,
+			optional boolean bubbles = false,
+			optional boolean cancelable = false,
+			optional Window? view = null,
+			optional DOMString data = "undefined");
+	};
+	</pre>
+
+	<dl dfn-for="TextEvent">
+		<dt><dfn attribute>data</dfn></dt>
+		<dd>
+			<code>data</code> holds the value of the characters generated by
+			an input method. This MAY be a single Unicode character or a
+			non-empty sequence of Unicode characters [[Unicode]]. Characters
+			SHOULD be normalized as defined by the Unicode normalization
+			form <em>NFC</em>, defined in [[UAX15]]. This
+			attribute MAY be the <a>empty string</a>.
+
+			The <a>un-initialized value</a> of this attribute MUST be
+			<code>""</code> (the empty string).
+		</dd>
+
+		<dt><dfn method>initTextEvent(typeArg)</dfn></dt>
+		<dd>
+			Initializes attributes of a <code>TextEvent</code> object.
+			This method has the same behavior as {{Event/initEvent()}}.
+
+			<dl class="parameters">
+				<dt>DOMString typeArg</dt>
+				<dd>
+					Refer to the {{Event/initEvent()}} method for a description of this parameter.
+				</dd>
+
+				<dt>boolean bubblesArg</dt>
+				<dd>
+					Refer to the {{Event/initEvent()}} method for a description of this parameter.
+				</dd>
+
+				<dt>boolean cancelableArg</dt>
+				<dd>
+					Refer to the {{Event/initEvent()}} method for a description of this parameter.
+				</dd>
+
+				<dt>Window? view</dt>
+				<dd>
+					Specifies {{UIEvent/view}}. This value MAY be <code>null</code>.
+				</dd>
+			</dl>
+		</dd>
+	</dl>
+
+<h4 id="legacy-textevent-event-types">Legacy {{TextEvent}} event types</h4>
+
+		<h5 id="event-type-textInput"><dfn>textInput</dfn></h5>
+
+			<table class="event-definition">
+				<tr>
+					<th>Type</th>
+					<td><strong><code>textInput</code></strong></td>
+				</tr>
+				<tr>
+					<th>Interface</th>
+					<td>{{TextEvent}}</td>
+				</tr>
+				<tr>
+					<th>Sync / Async</th>
+					<td>Sync</td>
+				</tr>
+				<tr>
+					<th>Bubbles</th>
+					<td>Yes</td>
+				</tr>
+				<tr>
+					<th>Trusted Targets</th>
+					<td><code>Element</code></td>
+				</tr>
+				<tr>
+					<th>Cancelable</th>
+					<td>Yes</td>
+				</tr>
+				<tr>
+					<th>Composed</th>
+					<td>Yes</td>
+				</tr>
+				<tr>
+					<th>Default action</th>
+					<td>
+						EVENT{input} event</td>
+				</tr>
+				<tr>
+					<th>Context<br/>(trusted events)</th>
+					<td>
+						<ul>
+							<li>Issue: TODO</li>
+						</ul>
+					</td>
+				</tr>
+			</table>
+
+			If supported by a <a>user agent</a>, this event MUST be dispatched
+			as the default action of a EVENT{beforeinput} event.
+
+
 <h3 id="legacy-mutationevent-events">Legacy {{MutationEvent}} events</h3>
 
 	The mutation and mutation name event modules are designed to allow