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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/form_manager.h"
#include "base/logging.h"
#include "base/string_util.h"
#include "base/stl_util-inl.h"
#include "third_party/WebKit/WebKit/chromium/public/WebDocument.h"
#include "third_party/WebKit/WebKit/chromium/public/WebElement.h"
#include "third_party/WebKit/WebKit/chromium/public/WebFrame.h"
#include "third_party/WebKit/WebKit/chromium/public/WebLabelElement.h"
#include "third_party/WebKit/WebKit/chromium/public/WebNode.h"
#include "third_party/WebKit/WebKit/chromium/public/WebNodeList.h"
#include "third_party/WebKit/WebKit/chromium/public/WebString.h"
#include "third_party/WebKit/WebKit/chromium/public/WebVector.h"
using WebKit::WebDocument;
using WebKit::WebElement;
using WebKit::WebFormElement;
using WebKit::WebFrame;
using WebKit::WebInputElement;
using WebKit::WebLabelElement;
using WebKit::WebNode;
using WebKit::WebNodeList;
using WebKit::WebString;
using WebKit::WebVector;
using webkit_glue::FormData;
using webkit_glue::FormField;
FormManager::FormManager() {
}
FormManager::~FormManager() {
Reset();
}
void FormManager::ExtractForms(WebFrame* frame) {
// Reset the vector of FormElements for this frame.
ResetFrame(frame);
WebVector<WebFormElement> web_forms;
frame->forms(web_forms);
// Form loop.
for (size_t i = 0; i < web_forms.size(); ++i) {
FormElement* form_elements = new FormElement;
form_elements->form_element = web_forms[i];
// Form elements loop.
WebVector<WebInputElement> input_elements;
form_elements->form_element.getInputElements(input_elements);
for (size_t j = 0; j < input_elements.size(); ++j) {
WebInputElement element = input_elements[j];
// TODO(jhawkins): Remove this check when we have labels.
if (!element.nameForAutofill().isEmpty())
form_elements->input_elements[element.nameForAutofill()] = element;
}
form_elements_map_[frame].push_back(form_elements);
}
}
void FormManager::GetForms(std::vector<FormData>* forms,
RequirementsMask requirements) {
// Frame loop.
for (WebFrameFormElementMap::iterator iter = form_elements_map_.begin();
iter != form_elements_map_.end(); ++iter) {
WebFrame* frame = iter->first;
// Form loop.
for (std::vector<FormElement*>::iterator form_iter = iter->second.begin();
form_iter != iter->second.end(); ++form_iter) {
FormElement* form_element = *form_iter;
if (requirements & REQUIRE_AUTOCOMPLETE &&
!form_element->form_element.autoComplete())
continue;
FormData form;
FormElementToFormData(frame, form_element, requirements, &form);
forms->push_back(form);
}
}
}
bool FormManager::FindForm(const WebInputElement& element,
FormData* form) {
// Frame loop.
for (WebFrameFormElementMap::iterator iter = form_elements_map_.begin();
iter != form_elements_map_.end(); ++iter) {
WebFrame* frame = iter->first;
// Form loop.
for (std::vector<FormElement*>::iterator form_iter = iter->second.begin();
form_iter != iter->second.end(); ++form_iter) {
FormElement* form_element = *form_iter;
if (form_element->input_elements.find(element.nameForAutofill()) !=
form_element->input_elements.end()) {
FormElementToFormData(frame, form_element, REQUIRE_NONE, form);
return true;
}
}
}
return false;
}
bool FormManager::FillForm(const FormData& form) {
FormElement* form_element = NULL;
// Frame loop.
for (WebFrameFormElementMap::iterator iter = form_elements_map_.begin();
iter != form_elements_map_.end(); ++iter) {
// Form loop.
for (std::vector<FormElement*>::iterator form_iter = iter->second.begin();
form_iter != iter->second.end(); ++form_iter) {
// TODO(dhollowa): matching on form name here which is not guaranteed to
// be unique for the page, nor is it guaranteed to be non-empty. Need to
// find a way to uniquely identify the form cross-process.
// http://crbug.com/37990 test file sample8.html.
// Also note that WebString() == WebString(string16()) does not seem to
// evaluate to |true| for some reason TBD, so forcing to string16.
string16 element_name((*form_iter)->form_element.name());
if (element_name == form.name &&
(*form_iter)->input_elements.size() == form.fields.size()) {
form_element = *form_iter;
break;
}
}
}
if (!form_element)
return false;
DCHECK(form_element->input_elements.size() == form.fields.size());
size_t i = 0;
for (FormInputElementMap::iterator iter =
form_element->input_elements.begin();
iter != form_element->input_elements.end(); ++iter, ++i) {
DCHECK_EQ(form.fields[i].name(), iter->second.nameForAutofill());
if (!form.fields[i].value().empty() &&
iter->second.inputType() != WebInputElement::Submit) {
iter->second.setValue(form.fields[i].value());
iter->second.setAutofilled(true);
}
}
return true;
}
void FormManager::Reset() {
for (WebFrameFormElementMap::iterator iter = form_elements_map_.begin();
iter != form_elements_map_.end(); ++iter) {
STLDeleteElements(&iter->second);
}
form_elements_map_.clear();
}
void FormManager::ResetFrame(WebFrame* frame) {
WebFrameFormElementMap::iterator iter = form_elements_map_.find(frame);
if (iter != form_elements_map_.end()) {
STLDeleteElements(&iter->second);
form_elements_map_.erase(iter);
}
}
void FormManager::FormElementToFormData(WebFrame* frame,
const FormElement* form_element,
RequirementsMask requirements,
FormData* form) {
form->name = form_element->form_element.name();
form->origin = frame->url();
form->action = frame->completeURL(form_element->form_element.action());
// If the completed ULR is not valid, just use the action we get from
// WebKit.
if (!form->action.is_valid())
form->action = GURL(form_element->form_element.action());
// Form elements loop.
for (FormInputElementMap::const_iterator element_iter =
form_element->input_elements.begin();
element_iter != form_element->input_elements.end(); ++element_iter) {
const WebInputElement& input_element = element_iter->second;
if (requirements & REQUIRE_AUTOCOMPLETE &&
!input_element.autoComplete())
continue;
if (requirements & REQUIRE_ELEMENTS_ENABLED &&
!input_element.isEnabledFormControl())
continue;
string16 label = LabelForElement(input_element);
string16 name = input_element.nameForAutofill();
string16 value = input_element.value();
string16 form_control_type = input_element.formControlType();
WebInputElement::InputType input_type = input_element.inputType();
FormField field = FormField(label,
name,
value,
form_control_type,
input_type);
form->fields.push_back(field);
}
}
// static
string16 FormManager::LabelForElement(const WebInputElement& element) {
WebNodeList labels = element.document().getElementsByTagName("label");
for (unsigned i = 0; i < labels.length(); ++i) {
WebElement e = labels.item(i).toElement<WebElement>();
if (e.hasTagName("label")) {
WebLabelElement label = e.toElement<WebLabelElement>();
if (label.correspondingControl() == element)
return label.innerText();
}
}
return string16();
}
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