[css3-ui] issues 35, 38, 39, 40. negative outline-offset, obsolete time-mode

Author: tantek

css-ui/Overview.bs

@@ -26,18 +26,16 @@ Ignored Terms: outline-left
 At Risk: ::value ::choices pseudo-elements
 At Risk: 'box-sizing' property value: padding-box
 At Risk: 'caret-color' property
-At Risk: 'ime-mode' property
 At Risk: 'text-overflow' property value: <string>
 At Risk: 'text-overflow' property 2-value syntax and definition
+At Risk: 'outline-offset' property negative values
 </pre>
 
 <!--
 At risk due to only one implementation:
 
 <li>box-sizing: padding-box - only FF supports in prefixed version
 
-<li>ime-mode: new - not sure about IE5+ vs FF3+ interop
-
 Not at risk:
 <li>CSS2.1:  		:hover :active :focus
 <li>Selectors:		:enabled :disabled :checked
@@ -476,6 +474,19 @@ the following rule can be used:
 </code></pre>
 </div>
 
+UAs may ignore negative values. 
+UAs that support negative values must cause the outline 
+to shrink into the border box. 
+Neither the height nor the width of the shape 
+drawn by the outline may become smaller 
+than twice the computed value of the outline-width property, 
+to make sure that an outline can be rendered 
+even with large negative values. User Agents must apply this constraint independently in each dimension. 
+If the outline is drawn as multiple disconnected shapes, 
+this constraint applies to each shape separately. 
+Negative values are an at risk feature due to 
+<a href="https://lists.w3.org/Archives/Public/www-style/2014Dec/0033.html">interoperability problems</a>.
+
 
 <h2 id="resizing-and-overflow">Resizing &amp; Overflow</h2>
 
@@ -1309,79 +1320,34 @@ button#foo { nav-left: #bar "sidebar"; }
 </div>
 
 
-<h4 id="input-method-editor">Input method editor: the 'ime-mode' property</h4>
+<h4 id="input-method-editor">Obsolete: the ime-mode property</h4>
 
-<table class="propdef"><tbody>
-<tr><th>Name: </th><td><dfn>ime-mode</dfn></td></tr>
-<tr><th>Value: </th><td>auto | normal | active | inactive | disabled
-</td></tr>
-<tr><th>Initial:</th><td>auto</td></tr>
-<tr><th>Applies to:</th><td>text fields</td></tr>
-<tr><th>Inherited:</th><td>no</td></tr>
-<tr><th>Percentages:</th><td>N/A</td></tr>
-<tr><th>Media:</th><td>interactive</td></tr>
-<tr><th>Computed&nbsp;value:</th><td>as specified</td></tr>
-<tr><th>Animatable:</th><td>no</td></tr>
-</tbody></table>
+"ime-mode" is a property somewhat implemented in some browsers, that is problematic and officially obsoleted by this specification.
 
-The 'ime-mode' CSS property controls the state of the input method editor for text fields.
+There is documentation of 
+<a href="https://developer.mozilla.org/en-US/docs/Web/CSS/ime-mode">non-interoperability of these implementations.
+</a>
 
-<dl>
-<dt>auto</dt>
-<dd>
-No change is made to the current input method editor state. This is the default.
-</dd>
-<dt>normal</dt>
-<dd>
-The IME state should be normal;
-this value can be used in a user style sheet to override the page setting.
-</dd>
-<dt>active</dt>
-<dd>
-The input method editor is initially active;
-text entry is performed using it unless the user specifically dismisses it.
-</dd>
-<dt>inactive</dt>
-<dd>
-The input method editor is initially inactive,
-but the user may activate it if they wish.
-</dd>
-<dt>disabled</dt>
-<dd>
-The input method editor is disabled and may not be activated by the user.
-</dd>
-</dl>
+Implementations must not add support for the ime-mode property.
 
-<div class="example">
-<p>Example: disabling input method support
-<pre><code class="lang-markup">&lt;input type=&quot;text&quot; name=&quot;name&quot; value=&quot;initial value&quot; style=&quot;ime-mode: disabled&quot;&gt;
-</code></pre>
+Implementations should drop support for it as soon as possible.
 
-This example disables input method support for a field;
-this might be necessary for fields that enter data
-into a database that doesn't support extended character sets,
-for example.
-</div>
+Authors must not use the ime-mode property
 
+Users may use the ime-mode property only for repair use-cases where they have to work around bad sites and legacy implementations, e.g. with a user style sheet rule like: 
 <div class="example">
 <p>Example: user preference
 <pre><code class="lang-css">input[type=password] {
     ime-mode: auto&nbsp;!important;
 }
 </code></pre>
+</div>
 
 This example CSS may be placed into a user style sheet file to force password input fields to behave in a default manner.
-</div>
 
-Note: In general, it's not appropriate for a public web site
-to manipulate the IME mode setting.
-This property should be used for web applications and the like.
-Authors should not rely on disabling IME
-to prevent extended characters from passing through a form.
-Even with IME disabled, users can still paste extended characters
-into a form's fields.
+This specification deliberately does not attempt to document the functionality of legacy ime-mode implementations nor what they specifically support because it does not make sense to pursue or recommend any such path.
+
 
-Note: The 'ime-mode' property is at risk.
 
 <hr title="Separator from footer">
 
@@ -1438,7 +1404,7 @@ or were insufficiently implemented to exit CR.
  <!-- e.g. System Appearance -->
 <li>Adding a small number of new but already interoperably
 implemented features.
- <!-- e.g. text-overflow, ime-mode -->
+ <!-- e.g. text-overflow -->
 
 </ul>
 
@@ -1459,8 +1425,6 @@ interoperability problems and further details to explore/define.
 
 <li>'cursor' property. Added detail about applying to the border, padding, and content areas of the element.
 
-<li>'ime-mode' property - new!
-
 <li>'text-overflow' property - new!
 
 <li>2013-nov-28: 'nav-up', 'nav-right', 'nav-down', and 'nav-left' properties removed from the "at risk" list