Add text field change handling for autofill preview in textarea element.

Source/web/WebFormControlElement.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "WebFormControlElement.h"
 
 #include "core/html/HTMLFormControlElement.h"
 #include "core/html/HTMLFormElement.h"
+#include "core/html/HTMLInputElement.h"
+#include "core/html/HTMLTextAreaElement.h"
+
 #include "wtf/PassRefPtr.h"
 
 using namespace WebCore;
 
 namespace blink {
 
 bool WebFormControlElement::isEnabled() const
 {
     return !constUnwrap<HTMLFormControlElement>()->isDisabledFormControl();
 }
@@ skipping 26 matching lines @@
 void WebFormControlElement::setAutofilled(bool autofilled)
 {
     unwrap<HTMLFormControlElement>()->setAutofilled(autofilled);
 }
 
 WebString WebFormControlElement::nameForAutofill() const
 {
     return constUnwrap<HTMLFormControlElement>()->nameForAutofill();
 }
 
+WebString WebFormControlElement::editingValue() const
+{
+    if (m_private->hasTagName(HTMLNames::inputTag))
+        return constUnwrap<HTMLInputElement>()->innerTextValue();
+    if (m_private->hasTagName(HTMLNames::textareaTag))
+        return constUnwrap<HTMLTextAreaElement>()->innerTextValue();
+    return WebString();
+}
+
+int WebFormControlElement::selectionStart() const
+{
+    if (m_private->hasTagName(HTMLNames::inputTag))
+        return constUnwrap<HTMLInputElement>()->selectionStart();
+    if (m_private->hasTagName(HTMLNames::textareaTag))
+        return constUnwrap<HTMLTextAreaElement>()->selectionStart();
+    return 0;
+}
+
+int WebFormControlElement::selectionEnd() const
+{
+    if (m_private->hasTagName(HTMLNames::inputTag))
+        return constUnwrap<HTMLInputElement>()->selectionEnd();
+    if (m_private->hasTagName(HTMLNames::textareaTag))
+        return constUnwrap<HTMLTextAreaElement>()->selectionEnd();
+    return 0;
+}
+
 WebFormElement WebFormControlElement::form() const
 {
     return WebFormElement(constUnwrap<HTMLFormControlElement>()->form());
 }
 
 WebFormControlElement::WebFormControlElement(const PassRefPtr<HTMLFormControlElement>& elem)
     : WebElement(elem)
 {
 }
 
 WebFormControlElement& WebFormControlElement::operator=(const PassRefPtr<HTMLFormControlElement>& elem)
 {
     m_private = elem;
     return *this;
 }
 
 WebFormControlElement::operator PassRefPtr<HTMLFormControlElement>() const
 {
     return toHTMLFormControlElement(m_private.get());
 }
 
 } // namespace blink