Add autofill preview support for Textarea

BUG=314976
R=isherman@chromium.org

Review URL: https://codereview.chromium.org/112663005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243977 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 103 insertions, 58 deletions

diff --git a/chrome/renderer/autofill/form_autofill_browsertest.cc b/chrome/renderer/autofill/form_autofill_browsertest.cc
index ecb90ab..e12acc40 100644
--- a/chrome/renderer/autofill/form_autofill_browsertest.cc
+++ b/chrome/renderer/autofill/form_autofill_browsertest.cc
@@ -161,7 +161,7 @@ class FormAutofillTest : public ChromeRenderViewTest {
   typedef void (*FillFormFunction)(const FormData& form,
                                    const WebInputElement& element);
 
-  typedef WebString (WebInputElement::*GetValueFunction)(void) const;
+  typedef WebString (*GetValueFunction)(WebFormControlElement element);
 
   // Test FormFillxxx functions.
   void TestFormFillFunctions(const char* html,
@@ -235,13 +235,11 @@ class FormAutofillTest : public ChromeRenderViewTest {
     if (element.formControlType() == "select-one") {
       value = element.to<WebSelectElement>().value();
     } else if (element.formControlType() == "textarea") {
-      value = element.to<WebTextAreaElement>().value();
+      value = get_value_function(element);
     } else {
       ASSERT_TRUE(element.formControlType() == "text" ||
                   element.formControlType() == "month");
-      WebInputElement input_element = GetMainFrame()->document().getElementById(
-          ASCIIToUTF16(field_case.name)).to<WebInputElement>();
-      value = (input_element.*get_value_function)();
+      value = get_value_function(element);
     }
 
     const WebString expected_value = ASCIIToUTF16(field_case.expected_value);
@@ -264,6 +262,20 @@ class FormAutofillTest : public ChromeRenderViewTest {
     FillFormIncludingNonFocusableElements(form, element.form());
   }
 
+  static WebString GetValueWrapper(WebFormControlElement element) {
+    if (element.formControlType() == "textarea")
+      return element.to<WebTextAreaElement>().value();
+
+    return element.to<WebInputElement>().value();
+  }
+
+  static WebString GetSuggestedValueWrapper(WebFormControlElement element) {
+    if (element.formControlType() == "textarea")
+      return element.to<WebTextAreaElement>().suggestedValue();
+
+    return element.to<WebInputElement>().suggestedValue();
+  }
+
  private:
   DISALLOW_COPY_AND_ASSIGN(FormAutofillTest);
 };
@@ -1115,7 +1127,7 @@ TEST_F(FormAutofillTest, FillForm) {
        "some multi-\nline value", "Go\naway!"},
   };
   TestFormFillFunctions(kFormHtml, field_cases, arraysize(field_cases),
-                        FillForm, &WebInputElement::value);
+                        FillForm, &GetValueWrapper);
   // Verify preview selection.
   WebInputElement firstname = GetMainFrame()->document().
       getElementById("firstname").to<WebInputElement>();
@@ -1165,34 +1177,47 @@ TEST_F(FormAutofillTest, FillFormIncludingNonFocusableElements) {
   };
   TestFormFillFunctions(kFormHtml, field_cases, arraysize(field_cases),
                         &FillFormIncludingNonFocusableElementsWrapper,
-                        &WebInputElement::value);
+                        &GetValueWrapper);
 }
 
 TEST_F(FormAutofillTest, PreviewForm) {
-  static const char* html =
-      "<FORM name=\"TestForm\" action=\"http://buh.com\" method=\"post\">"
-      "  <INPUT type=\"text\" id=\"firstname\"/>"
-      "  <INPUT type=\"text\" id=\"lastname\"/>"
-      "  <INPUT type=\"text\" id=\"notempty\" value=\"Hi\"/>"
-      "  <INPUT type=\"text\" autocomplete=\"off\" id=\"noautocomplete\"/>"
-      "  <INPUT type=\"text\" disabled=\"disabled\" id=\"notenabled\"/>"
-      "  <INPUT type=\"submit\" name=\"reply-send\" value=\"Send\"/>"
-      "</FORM>";
-
   static const AutofillFieldCase field_cases[] = {
       // Normal empty fields should be previewed.
       {"text", "firstname", "", "", true, "suggested firstname",
        "suggested firstname"},
       {"text", "lastname", "", "", true, "suggested lastname",
        "suggested lastname"},
+      // Hidden fields should not be extracted to form_data.
       // Non empty fields should not be previewed.
-      {"text", "notempty", "Hi", "", false, "filled notempty", ""},
+      {"text", "notempty", "Hi", "", false, "suggested notempty", ""},
       // "noautocomplete" should not be extracted to form_data.
       // Disabled fields should not be previewed.
-      {"text", "notenabled", "", "", false, "filled notenabled", ""},
+      {"text", "notenabled", "", "", false, "suggested notenabled", ""},
+      // Readonly fields should not be previewed.
+      {"text", "readonly", "", "", false, "suggested readonly", ""},
+      // Fields with "visibility: hidden" should not be previewed.
+      {"text", "invisible", "", "", false, "suggested invisible",
+       ""},
+      // Fields with "display:none" should not previewed.
+      {"text", "displaynone", "", "", false, "suggested displaynone",
+       ""},
+      // Regular <input type="month"> should not be previewed.
+      {"month", "month", "", "", false, "2017-11", ""},
+      // Non-empty <input type="month"> should not be previewed.
+      {"month", "month-nonempty", "2011-12", "", false, "2017-11", ""},
+      // Regular select fields preview is not yet supported
+      {"select-one", "select", "", "", false, "TX", ""},
+      // Select fields preview is not yet supported
+      {"select-one", "select-nonempty", "CA", "", false, "TX", "CA"},
+      // Normal textarea elements should be previewed.
+      {"textarea", "textarea", "", "", true, "suggested multi-\nline value",
+       "suggested multi-\nline value"},
+      // Nonempty textarea elements should not be previewed.
+      {"textarea", "textarea-nonempty", "Go\naway!", "", false,
+       "suggested multi-\nline value", ""},
   };
-  TestFormFillFunctions(html, field_cases, arraysize(field_cases), &PreviewForm,
-                        &WebInputElement::suggestedValue);
+  TestFormFillFunctions(kFormHtml, field_cases, arraysize(field_cases),
+                        &PreviewForm, &GetSuggestedValueWrapper);
 
   // Verify preview selection.
   WebInputElement firstname = GetMainFrame()->document().
diff --git a/components/autofill/content/renderer/form_autofill_util.cc b/components/autofill/content/renderer/form_autofill_util.cc
index 9876748..74d5b68 100644
--- a/components/autofill/content/renderer/form_autofill_util.cc
+++ b/components/autofill/content/renderer/form_autofill_util.cc
@@ -570,21 +570,26 @@ void PreviewFormField(const FormFieldData& data,
   if (data.value.empty())
     return;
 
-  // Only preview input fields. Excludes checkboxes and radio buttons, as there
-  // is no provision for setSuggestedCheckedValue in WebInputElement.
+  // Preview input and textarea fields. For input fields, excludes checkboxes
+  // and radio buttons, as there is no provision for setSuggestedCheckedValue
+  // in WebInputElement.
   WebInputElement* input_element = toWebInputElement(field);
-  if (!IsTextInput(input_element))
-    return;
-
-  // If the maxlength attribute contains a negative value, maxLength()
-  // returns the default maxlength value.
-  input_element->setSuggestedValue(
+  if (IsTextInput(input_element)) {
+    // If the maxlength attribute contains a negative value, maxLength()
+    // returns the default maxlength value.
+    input_element->setSuggestedValue(
       data.value.substr(0, input_element->maxLength()));
-  input_element->setAutofilled(true);
-  if (is_initiating_node) {
-    // Select the part of the text that the user didn't type.
-    input_element->setSelectionRange(input_element->value().length(),
-                                     input_element->suggestedValue().length());
+    input_element->setAutofilled(true);
+    if (is_initiating_node) {
+      // Select the part of the text that the user didn't type.
+      input_element->setSelectionRange(
+          input_element->value().length(),
+          input_element->suggestedValue().length());
+    }
+  } else if (IsTextAreaElement(*field)) {
+    WebTextAreaElement textarea = field->to<WebTextAreaElement>();
+    textarea.setSuggestedValue(data.value);
+    field->setAutofilled(true);
   }
 }
 
@@ -1047,38 +1052,53 @@ bool ClearPreviewedFormWithElement(const WebInputElement& element,
   ExtractAutofillableElements(form_element, REQUIRE_AUTOCOMPLETE,
                               &control_elements);
   for (size_t i = 0; i < control_elements.size(); ++i) {
-    // Only text input elements can be previewed.
-    WebInputElement* input_element = toWebInputElement(&control_elements[i]);
-    if (!IsTextInput(input_element))
-      continue;
-
-    // If the input element is not auto-filled, we did not preview it, so there
-    // is nothing to reset.
-    if (!input_element->isAutofilled())
-      continue;
-
     // There might be unrelated elements in this form which have already been
     // auto-filled.  For example, the user might have already filled the address
     // part of a form and now be dealing with the credit card section.  We only
     // want to reset the auto-filled status for fields that were previewed.
-    if (input_element->suggestedValue().isEmpty())
+    WebFormControlElement control_element = control_elements[i];
+
+    // Only text input and textarea elements can be previewed.
+    WebInputElement* input_element = toWebInputElement(&control_element);
+    if (!IsTextInput(input_element) && !IsTextAreaElement(control_element))
+      continue;
+
+    // If the element is not auto-filled, we did not preview it,
+    // so there is nothing to reset.
+    if(!control_element.isAutofilled())
+      continue;
+
+    if ((IsTextInput(input_element) &&
+         input_element->suggestedValue().isEmpty()) ||
+        (IsTextAreaElement(control_element) &&
+         control_element.to<WebTextAreaElement>().suggestedValue().isEmpty()))
       continue;
 
     // Clear the suggested value. For the initiating node, also restore the
     // original value.
-    input_element->setSuggestedValue(WebString());
-    bool is_initiating_node = (element == *input_element);
-    if (is_initiating_node)
-      input_element->setAutofilled(was_autofilled);
-    else
-      input_element->setAutofilled(false);
-
-    // Clearing the suggested value in the focused node (above) can cause
-    // selection to be lost. We force selection range to restore the text
-    // cursor.
-    if (is_initiating_node) {
-      int length = input_element->value().length();
-      input_element->setSelectionRange(length, length);
+    if (IsTextInput(input_element)) {
+      input_element->setSuggestedValue(WebString());
+      bool is_initiating_node = (element == *input_element);
+      if (is_initiating_node)
+        input_element->setAutofilled(was_autofilled);
+      else
+        input_element->setAutofilled(false);
+
+      // Clearing the suggested value in the focused node (above) can cause
+      // selection to be lost. We force selection range to restore the text
+      // cursor.
+      if (is_initiating_node) {
+        int length = input_element->value().length();
+        input_element->setSelectionRange(length, length);
+      }
+    } else if (IsTextAreaElement(control_element)) {
+      WebTextAreaElement text_area = control_element.to<WebTextAreaElement>();
+      text_area.setSuggestedValue(WebString());
+      bool is_initiating_node = (element == text_area);
+      if (is_initiating_node)
+        control_element.setAutofilled(was_autofilled);
+      else
+        control_element.setAutofilled(false);
     }
   }