1 files changed, 262 insertions, 0 deletions
diff --git a/Source/WebKit/chromium/src/WebSearchableFormData.cpp b/Source/WebKit/chromium/src/WebSearchableFormData.cpp
new file mode 100644
index 0000000..8e27a67
--- /dev/null
+++ b/Source/WebKit/chromium/src/WebSearchableFormData.cpp
@@ -0,0 +1,262 @@
+/*
+ * Copyright (C) 2009 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
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * 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 "WebSearchableFormData.h"
+
+#include "Document.h"
+#include "FormDataBuilder.h"
+#include "FormDataList.h"
+#include "Frame.h"
+#include "HTMLFormControlElement.h"
+#include "HTMLFormElement.h"
+#include "HTMLInputElement.h"
+#include "HTMLNames.h"
+#include "HTMLOptionElement.h"
+#include "HTMLOptionsCollection.h"
+#include "HTMLSelectElement.h"
+#include "TextEncoding.h"
+#include "WebFormElement.h"
+
+using namespace WebCore;
+using namespace HTMLNames;
+
+namespace {
+
+// Gets the encoding for the form.
+void GetFormEncoding(const HTMLFormElement* form, TextEncoding* encoding)
+{
+    String str(form->getAttribute(HTMLNames::accept_charsetAttr));
+    str.replace(',', ' ');
+    Vector<String> charsets;
+    str.split(' ', charsets);
+    for (Vector<String>::const_iterator i(charsets.begin()); i != charsets.end(); ++i) {
+        *encoding = TextEncoding(*i);
+        if (encoding->isValid())
+            return;
+    }
+    const Frame* frame = form->document()->frame();
+    *encoding = frame ? TextEncoding(frame->loader()->writer()->encoding()) : Latin1Encoding();
+}
+
+// Returns true if the submit request results in an HTTP URL.
+bool IsHTTPFormSubmit(const HTMLFormElement* form)
+{
+    String action(form->action());
+    return form->document()->frame()->loader()->completeURL(action.isNull() ? "" : action).protocol() == "http";
+}
+
+// If the form does not have an activated submit button, the first submit
+// button is returned.
+HTMLFormControlElement* GetButtonToActivate(HTMLFormElement* form)
+{
+    HTMLFormControlElement* firstSubmitButton = 0;
+    // FIXME: Consider refactoring this code so that we don't call form->associatedElements() twice.
+    for (Vector<FormAssociatedElement*>::const_iterator i(form->associatedElements().begin()); i != form->associatedElements().end(); ++i) {
+      if (!(*i)->isFormControlElement())
+          continue;
+      HTMLFormControlElement* formElement = static_cast<HTMLFormControlElement*>(*i);
+      if (formElement->isActivatedSubmit())
+          // There's a button that is already activated for submit, return 0.
+          return 0;
+      if (!firstSubmitButton && formElement->isSuccessfulSubmitButton())
+          firstSubmitButton = formElement;
+    }
+    return firstSubmitButton;
+}
+
+// Returns true if the selected state of all the options matches the default
+// selected state.
+bool IsSelectInDefaultState(const HTMLSelectElement* select)
+{
+    const Vector<Element*>& listItems = select->listItems();
+    if (select->multiple() || select->size() > 1) {
+        for (Vector<Element*>::const_iterator i(listItems.begin()); i != listItems.end(); ++i) {
+            if (!(*i)->hasLocalName(HTMLNames::optionTag))
+                continue;
+            const HTMLOptionElement* optionElement = static_cast<const HTMLOptionElement*>(*i);
+            if (optionElement->selected() != optionElement->defaultSelected())
+                return false;
+        }
+        return true;
+    }
+
+    // The select is rendered as a combobox (called menulist in WebKit). At
+    // least one item is selected, determine which one.
+    const HTMLOptionElement* initialSelected = 0;
+    for (Vector<Element*>::const_iterator i(listItems.begin()); i != listItems.end(); ++i) {
+        if (!(*i)->hasLocalName(HTMLNames::optionTag))
+            continue;
+        const HTMLOptionElement* optionElement = static_cast<const HTMLOptionElement*>(*i);
+        if (optionElement->defaultSelected()) {
+            // The page specified the option to select.
+            initialSelected = optionElement;
+            break;
+        }
+        if (!initialSelected)
+            initialSelected = optionElement;
+    }
+    return initialSelected ? initialSelected->selected() : true;
+}
+
+// Returns true if the form element is in its default state, false otherwise.
+// The default state is the state of the form element on initial load of the
+// page, and varies depending upon the form element. For example, a checkbox is
+// in its default state if the checked state matches the state of the checked attribute.
+bool IsInDefaultState(const HTMLFormControlElement* formElement)
+{
+    if (formElement->hasTagName(HTMLNames::inputTag)) {
+        const HTMLInputElement* inputElement = static_cast<const HTMLInputElement*>(formElement);
+        if (inputElement->isCheckbox() || inputElement->isRadioButton())
+            return inputElement->checked() == inputElement->hasAttribute(checkedAttr);
+    } else if (formElement->hasTagName(HTMLNames::selectTag))
+        return IsSelectInDefaultState(static_cast<const HTMLSelectElement*>(formElement));
+    return true;
+}
+
+// If form has only one text input element, return true. If a valid input
+// element is not found, return false. Additionally, the form data for all
+// elements is added to enc_string and the encoding used is set in
+// encoding_name.
+bool HasSuitableTextElement(const HTMLFormElement* form, Vector<char>* encodedString, String* encodingName)
+{
+    TextEncoding encoding;
+    GetFormEncoding(form, &encoding);
+    if (!encoding.isValid()) {
+        // Need a valid encoding to encode the form elements.
+        // If the encoding isn't found webkit ends up replacing the params with
+        // empty strings. So, we don't try to do anything here.
+        return 0;
+    }
+    *encodingName = encoding.name();
+
+    HTMLInputElement* textElement = 0;
+    // FIXME: Consider refactoring this code so that we don't call form->associatedElements() twice.
+    for (Vector<FormAssociatedElement*>::const_iterator i(form->associatedElements().begin()); i != form->associatedElements().end(); ++i) {
+        if (!(*i)->isFormControlElement())
+            continue;
+        HTMLFormControlElement* formElement = static_cast<HTMLFormControlElement*>(*i);
+        if (formElement->disabled() || formElement->name().isNull())
+            continue;
+
+        if (!IsInDefaultState(formElement) || formElement->hasTagName(HTMLNames::textareaTag))
+            return 0;
+
+        bool isTextElement = false;
+        if (formElement->hasTagName(HTMLNames::inputTag)) {
+            const HTMLInputElement* input = static_cast<const HTMLInputElement*>(formElement);
+            if (input->isFileUpload()) {
+                // Too big, don't try to index this.
+                return 0;
+            }
+
+            if (input->isPasswordField()) {
+                // Don't store passwords! This is most likely an https anyway.
+                return 0;
+            }
+
+            if (input->isTextField())
+                isTextElement = true;
+      }
+
+      FormDataList dataList(encoding);
+      if (!formElement->appendFormData(dataList, false))
+          continue;
+
+      const Vector<FormDataList::Item>& items = dataList.items();
+      if (isTextElement && !items.isEmpty()) {
+          if (textElement) {
+              // The auto-complete bar only knows how to fill in one value.
+              // This form has multiple fields; don't treat it as searchable.
+              return false;
+          }
+          textElement = static_cast<HTMLInputElement*>(formElement);
+      }
+      for (Vector<FormDataList::Item>::const_iterator j(items.begin()); j != items.end(); ++j) {
+          // Handle ISINDEX / <input name=isindex> specially, but only if it's
+          // the first entry.
+          if (!encodedString->isEmpty() || j->data() != "isindex") {
+              if (!encodedString->isEmpty())
+                  encodedString->append('&');
+              FormDataBuilder::encodeStringAsFormData(*encodedString, j->data());
+              encodedString->append('=');
+          }
+          ++j;
+          if (formElement == textElement)
+              encodedString->append("{searchTerms}", 13);
+          else
+              FormDataBuilder::encodeStringAsFormData(*encodedString, j->data());
+      }
+    }
+
+    return textElement;
+}
+
+} // namespace
+
+namespace WebKit {
+
+WebSearchableFormData::WebSearchableFormData(const WebFormElement& form)
+{
+    RefPtr<HTMLFormElement> formElement = form.operator PassRefPtr<HTMLFormElement>();
+    const Frame* frame = formElement->document()->frame();
+    if (!frame)
+        return;
+
+    // Only consider forms that GET data and the action targets an http page.
+    if (equalIgnoringCase(formElement->getAttribute(HTMLNames::methodAttr), "post") || !IsHTTPFormSubmit(formElement.get()))
+        return;
+
+    HTMLFormControlElement* firstSubmitButton = GetButtonToActivate(formElement.get());
+    if (firstSubmitButton) {
+        // The form does not have an active submit button, make the first button
+        // active. We need to do this, otherwise the URL will not contain the
+        // name of the submit button.
+        firstSubmitButton->setActivatedSubmit(true);
+    }
+    Vector<char> encodedString;
+    String encoding;
+    bool hasElement = HasSuitableTextElement(formElement.get(), &encodedString, &encoding);
+    if (firstSubmitButton)
+        firstSubmitButton->setActivatedSubmit(false);
+    if (!hasElement) {
+        // Not a searchable form.
+        return;
+    }
+
+    String action(formElement->action());
+    KURL url(frame->loader()->completeURL(action.isNull() ? "" : action));
+    RefPtr<FormData> formData = FormData::create(encodedString);
+    url.setQuery(formData->flattenToString());
+    m_url = url;
+    m_encoding = encoding;
+}
+
+} // namespace WebKit