Checkboxradio: When pre-rendered, assume label is a sibling of the input

(cherry picked from commit cb7a5dc)

Closes gh-7471
Fixes gh-7470

Author: Gabriel Schulhof

js/widgets/forms/checkboxradio.js

@@ -39,7 +39,12 @@ $.widget( "mobile.checkboxradio", $.extend( {
 				return input.jqmData( dataAttr ) ||
 					input.closest( "form, fieldset" ).jqmData( dataAttr );
 			},
-			label = this._findLabel(),
+			label = this.options.enhanced ?
+				{
+					element: this.element.siblings( "label" ),
+					isParent: false
+				} :
+				this._findLabel(),
 			inputtype = input[0].type,
 			checkedClass = "ui-" + inputtype + "-on",
 			uncheckedClass = "ui-" + inputtype + "-off";

tests/unit/checkboxradio/find-label-tests.html

@@ -40,5 +40,12 @@
 	<label id="separate-label-input-outside-form-label" for="separate-label-input-outside-form">Label</label>
 	<input type="checkbox" id="separate-label-input-outside-form">
 	<label id="nested-input-outside-form-label">Label<input type="checkbox" id="nested-input-outside-form"></label>
+
+	<form>
+		<div class="ui-checkbox">
+			<label class="ui-btn ui-corner-all ui-btn-inherit ui-btn-icon-left ui-checkbox-off">Pre-rendered</label>
+			<input type="checkbox" id="pre-rendered-label-test" data-nstest-enhanced="true">
+		</div>
+	</form>
 </body>
 </html>

tests/unit/checkboxradio/find_label_tests_core.js

@@ -1,3 +1,5 @@
+$.mobile.ns = "nstest-";
+
 var pairs = [
 		{
 			label: "#separate-label-outside-form-label",
@@ -49,3 +51,13 @@ test( "_findLabel() works correctly", function() {
 				": the label was correctly identified as (not?) the parent" );
 	}
 });
+
+test( "label on pre-rendered checkbox is found", function() {
+	var actualLabel = $( "#pre-rendered-label-test" )
+			.checkboxradio()
+			.data( "mobile-checkboxradio" ).label,
+		expectedLabel = $( "#pre-rendered-label-test" ).prev();
+
+	deepEqual( actualLabel.length, 1, "One label was found" );
+	deepEqual( actualLabel[ 0 ], expectedLabel[ 0 ], "The right label was found" );
+});