fixing incorrect accessibilityFeatures

Fixes #563 Checking features instead of access modes for non visual content
Fixed #572 Incorrect property tests in rich content

Author: clapierre

a11y-meta-display-guide/2.0/draft/techniques/epub-metadata/index.html

@@ -305,9 +305,7 @@ <h4>Variables setup</h4>
 					<li><b>LET</b> <var>all_necessary_content_textual</var> be the result of calling <a href="#check-for-node">check for node</a> on <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="schema:<i>accessModeSufficient</i>" and normalize-space()="<i>textual</i>"]</code>.</li>
 					<li>
 						<b>LET</b> <var>non_textual_content_images</var> be the result of calling <a href="#check-for-node">check for node</a> on
-                        <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="<i>schema:accessibilityFeature</i>" and <br/>(normalize-space()="<i>chartOnVisual</i>" or normalize-space()="<i>chemOnVisual</i>" or <br/>
-                         normalize-space()="<i>diagramOnVisual"</i> or normalize-space()="<i>mathOnVisual</i>" or <br/>
-                         normalize-space()="<i>musicOnVisual"</i> or normalize-space()="<i>textOnVisual</i>")]</code>.
+                        <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="<i>schema:accessMode</i>" and <br/>normalize-space() = ("chartOnVisual", "chemOnVisual", "diagramOnVisual", "mathOnVisual", "musicOnVisual", "textOnVisual")]</code>.
 					</li>
 
                     <li><b>LET</b> <var>textual_alternative_images</var> be the result of calling <a href="#check-for-node">check for node</a> on <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="<i>schema:accessibilityFeature</i>" and <br/>(normalize-space()="<i>longDescription</i>" or normalize-space()="<i>alternativeText</i>" or normalize-space()="<i>describedMath"</i>)]</code>.
@@ -671,7 +669,7 @@ <h4>Understanding the variables</h4>
 				<dl>
 					<dt><var>contains_charts_diagrams</var></dt>
 					<dd>
-                        <p>If true it indicates that the <i>accessibilityFeature="chartOnVisual"</i> (charts encoded in visual form) is present in the package document, otherwise if false it means that the metadata is not present.</p>
+                        <p>If true it indicates that the <i>accessMode="chartOnVisual"</i> (charts encoded in visual form) is present in the package document, otherwise if false it means that the metadata is not present.</p>
 						<p>This means that there is a positive indication that the product has some information conveyed via some form of illustration, such as a graph, a chart, a diagram, a figure, etc).</p>
 					</dd>
 					<dt><var>long_text_descriptions</var></dt>
@@ -681,7 +679,7 @@ <h4>Understanding the variables</h4>
 					</dd>
 					<dt><var>contains_chemical_formula</var></dt>
 					<dd>
-						<p>If true it indicates that the <i>accessibilityFeature="chemOnVisual"</i> (Chemical content) is present in the package document, otherwise if false it means that the metadata is not present.</p>
+						<p>If true it indicates that the <i>accessMode="chemOnVisual"</i> (Chemical content) is present in the package document, otherwise if false it means that the metadata is not present.</p>
 						<p>This means that there is a positive indication that the publication contains chemical notations, formulae.</p>
 					</dd>
 					<dt><var>chemical_formula_as_
@@ -731,11 +729,11 @@ <h4>Variables setup</h4>
 				<ol class="condition">
 					<li><b>LET</b> <var>package_document</var> be the result of calling <a href="#pre-processing">preprocessing</a> given <var>package_document_as_text</var>.</li>
 
-                    <li><b>LET</b> <var>contains_charts_diagrams</var> be the result of calling <a href="#check-for-node">check for node</a> on <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="schema:<i>accessibilityFeature</i>" and normalize-space()="<i>chartOnVisual</i>"]</code>.</li>
+                    <li><b>LET</b> <var>contains_charts_diagrams</var> be the result of calling <a href="#check-for-node">check for node</a> on <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="schema:<i>accessMode</i>" and normalize-space()="<i>chartOnVisual</i>"]</code>.</li>
 
                     <li><b>LET</b> <var>long_text_descriptions</var> be the result of calling <a href="#check-for-node">check for node</a> on <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="schema:<i>accessibilityFeature</i>" and normalize-space()="<i>longDescriptions</i>"]</code>.</li>
 
-                    <li><b>LET</b> <var>contains_chemical_formula</var> be the result of calling <a href="#check-for-node">check for node</a> on <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="schema:<i>accessibilityFeature</i>" and normalize-space()="<i>chemOnVisual</i>"]</code>.</li>
+                    <li><b>LET</b> <var>contains_chemical_formula</var> be the result of calling <a href="#check-for-node">check for node</a> on <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="schema:<i>accessMode</i>" and normalize-space()="<i>chemOnVisual</i>"]</code>.</li>
 
 
                     <li><b>LET</b> <var>chemical_formula_as_latex</var> be the result of calling <a href="#check-for-node">check for node</a> on <var>package_document</var>, <code class="xpath">/package/metadata/meta[@property="schema:<i>accessibilityFeature</i>" and normalize-space()="<i>latex-chemistry</i>"]</code>.</li>