--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/chromium/src/WebSearchableFormData.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,261 @@
+/*
+ * 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;
+
+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<HTMLFormControlElement*>::const_iterator i(form->associatedElements().begin()); i != form->associatedElements().end(); ++i) {
+ HTMLFormControlElement* formElement = *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 defaultChecked state.
+bool IsInDefaultState(const HTMLFormControlElement* formElement)
+{
+ if (formElement->hasTagName(HTMLNames::inputTag)) {
+ const HTMLInputElement* inputElement = static_cast<const HTMLInputElement*>(formElement);
+ if (inputElement->inputType() == HTMLInputElement::CHECKBOX || inputElement->inputType() == HTMLInputElement::RADIO)
+ return inputElement->checked() == inputElement->defaultChecked();
+ } 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<HTMLFormControlElement*>::const_iterator i(form->associatedElements().begin()); i != form->associatedElements().end(); ++i) {
+ HTMLFormControlElement* formElement = *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)) {
+ switch (static_cast<const HTMLInputElement*>(formElement)->inputType()) {
+ case HTMLInputElement::TEXT:
+ case HTMLInputElement::ISINDEX:
+ isTextElement = true;
+ break;
+ case HTMLInputElement::PASSWORD:
+ // Don't store passwords! This is most likely an https anyway.
+ // Fall through.
+ case HTMLInputElement::FILE:
+ // Too big, don't try to index this.
+ return 0;
+ default:
+ // All other input types are indexable.
+ break;
+ }
+ }
+
+ FormDataList dataList(encoding);
+ if (!formElement->appendFormData(dataList, false))
+ continue;
+
+ const BlobItemList& 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 (BlobItemList::const_iterator j(items.begin()); j != items.end(); ++j) {
+ const StringBlobItem* item = (*j)->toStringBlobItem();
+ ASSERT(item);
+ // Handle ISINDEX / <input name=isindex> specially, but only if it's
+ // the first entry.
+ if (!encodedString->isEmpty() || item->cstr() != "isindex") {
+ if (!encodedString->isEmpty())
+ encodedString->append('&');
+ FormDataBuilder::encodeStringAsFormData(*encodedString, item->cstr());
+ encodedString->append('=');
+ }
+ ++j;
+ if (formElement == textElement)
+ encodedString->append("{searchTerms}", 13);
+ else
+ FormDataBuilder::encodeStringAsFormData(*encodedString, item->cstr());
+ }
+ }
+
+ 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