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| 1 /* | |
| 2 * Copyright (C) 2009 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #include "config.h" | |
| 32 #include "WebSearchableFormData.h" | |
| 33 | |
| 34 #include "Document.h" | |
| 35 #include "FormDataBuilder.h" | |
| 36 #include "FormDataList.h" | |
| 37 #include "Frame.h" | |
| 38 #include "HTMLFormControlElement.h" | |
| 39 #include "HTMLFormElement.h" | |
| 40 #include "HTMLInputElement.h" | |
| 41 #include "HTMLNames.h" | |
| 42 #include "HTMLOptionElement.h" | |
| 43 #include "HTMLOptionsCollection.h" | |
| 44 #include "HTMLSelectElement.h" | |
| 45 #include "TextEncoding.h" | |
| 46 #include "WebFormElement.h" | |
| 47 | |
| 48 using namespace WebCore; | |
| 49 | |
| 50 namespace { | |
| 51 | |
| 52 // Gets the encoding for the form. | |
| 53 void GetFormEncoding(const HTMLFormElement* form, TextEncoding* encoding) | |
| 54 { | |
| 55 String str(form->getAttribute(HTMLNames::accept_charsetAttr)); | |
| 56 str.replace(',', ' '); | |
| 57 Vector<String> charsets; | |
| 58 str.split(' ', charsets); | |
| 59 for (Vector<String>::const_iterator i(charsets.begin()); i != charsets.end(); ++i) { | |
| 60 *encoding = TextEncoding(*i); | |
| 61 if (encoding->isValid()) | |
| 62 return; | |
| 63 } | |
| 64 const Frame* frame = form->document()->frame(); | |
| 65 *encoding = frame ? TextEncoding(frame->loader()->encoding()) : Latin1Encoding(); | |
| 66 } | |
| 67 | |
| 68 // Returns true if the submit request results in an HTTP URL. | |
| 69 bool IsHTTPFormSubmit(const HTMLFormElement* form) | |
| 70 { | |
| 71 String action(form->action()); | |
| 72 return form->document()->frame()->loader()->completeURL(action.isNull() ? "" : action).protocol() == "http"; | |
| 73 } | |
| 74 | |
| 75 // If the form does not have an activated submit button, the first submit | |
| 76 // button is returned. | |
| 77 HTMLFormControlElement* GetButtonToActivate(HTMLFormElement* form) | |
| 78 { | |
| 79 HTMLFormControlElement* firstSubmitButton = 0; | |
| 80 for (Vector<HTMLFormControlElement*>::const_iterator i(form->formElements.begin()); i != form->formElements.end(); ++i) { | |
| 81 HTMLFormControlElement* formElement = *i; | |
| 82 if (formElement->isActivatedSubmit()) | |
| 83 // There's a button that is already activated for submit, return 0. | |
| 84 return 0; | |
| 85 if (!firstSubmitButton && formElement->isSuccessfulSubmitButton()) | |
| 86 firstSubmitButton = formElement; | |
| 87 } | |
| 88 return firstSubmitButton; | |
| 89 } | |
| 90 | |
| 91 // Returns true if the selected state of all the options matches the default | |
| 92 // selected state. | |
| 93 bool IsSelectInDefaultState(const HTMLSelectElement* select) | |
| 94 { | |
| 95 const Vector<Element*>& listItems = select->listItems(); | |
| 96 if (select->multiple() || select->size() > 1) { | |
| 97 for (Vector<Element*>::const_iterator i(listItems.begin()); i != listItems.end(); ++i) { | |
| 98 if (!(*i)->hasLocalName(HTMLNames::optionTag)) | |
| 99 continue; | |
| 100 const HTMLOptionElement* optionElement = static_cast<const HTMLOptionElement*>(*i); | |
| 101 if (optionElement->selected() != optionElement->defaultSelected()) | |
| 102 return false; | |
| 103 } | |
| 104 return true; | |
| 105 } | |
| 106 | |
| 107 // The select is rendered as a combobox (called menulist in WebKit). At | |
| 108 // least one item is selected, determine which one. | |
| 109 const HTMLOptionElement* initialSelected = 0; | |
| 110 for (Vector<Element*>::const_iterator i(listItems.begin()); i != listItems.end(); ++i) { | |
| 111 if (!(*i)->hasLocalName(HTMLNames::optionTag)) | |
| 112 continue; | |
| 113 const HTMLOptionElement* optionElement = static_cast<const HTMLOptionElement*>(*i); | |
| 114 if (optionElement->defaultSelected()) { | |
| 115 // The page specified the option to select. | |
| 116 initialSelected = optionElement; | |
| 117 break; | |
| 118 } | |
| 119 if (!initialSelected) | |
| 120 initialSelected = optionElement; | |
| 121 } | |
| 122 return initialSelected ? initialSelected->selected() : true; | |
| 123 } | |
| 124 | |
| 125 // Returns true if the form element is in its default state, false otherwise. | |
| 126 // The default state is the state of the form element on initial load of the | |
| 127 // page, and varies depending upon the form element. For example, a checkbox is | |
| 128 // in its default state if the checked state matches the defaultChecked state. | |
| 129 bool IsInDefaultState(const HTMLFormControlElement* formElement) | |
| 130 { | |
| 131 if (formElement->hasTagName(HTMLNames::inputTag)) { | |
| 132 const HTMLInputElement* inputElement = static_cast<const HTMLInputElement*>(formElement); | |
| 133 if (inputElement->inputType() == HTMLInputElement::CHECKBOX || inputElement->inputType() == HTMLInputElement::RADIO) | |
| 134 return inputElement->checked() == inputElement->defaultChecked(); | |
| 135 } else if (formElement->hasTagName(HTMLNames::selectTag)) | |
| 136 return IsSelectInDefaultState(static_cast<const HTMLSelectElement*>(formElement)); | |
| 137 return true; | |
| 138 } | |
| 139 | |
| 140 // If form has only one text input element, return true. If a valid input | |
| 141 // element is not found, return false. Additionally, the form data for all | |
| 142 // elements is added to enc_string and the encoding used is set in | |
| 143 // encoding_name. | |
| 144 bool HasSuitableTextElement(const HTMLFormElement* form, Vector<char>* encodedString, String* encodingName) | |
| 145 { | |
| 146 TextEncoding encoding; | |
| 147 GetFormEncoding(form, &encoding); | |
| 148 if (!encoding.isValid()) { | |
| 149 // Need a valid encoding to encode the form elements. | |
| 150 // If the encoding isn't found webkit ends up replacing the params with | |
| 151 // empty strings. So, we don't try to do anything here. | |
| 152 return 0; | |
| 153 } | |
| 154 *encodingName = encoding.name(); | |
| 155 | |
| 156 HTMLInputElement* textElement = 0; | |
| 157 for (Vector<HTMLFormControlElement*>::const_iterator i(form->formElements.begin()); i != form->formElements.end(); ++i) { | |
| 158 HTMLFormControlElement* formElement = *i; | |
| 159 if (formElement->disabled() || formElement->name().isNull()) | |
| 160 continue; | |
| 161 | |
| 162 if (!IsInDefaultState(formElement) || formElement->hasTagName(HTMLNames::textareaTag)) | |
| 163 return 0; | |
| 164 | |
| 165 bool isTextElement = false; | |
| 166 if (formElement->hasTagName(HTMLNames::inputTag)) { | |
| 167 switch (static_cast<const HTMLInputElement*>(formElement)->inputType()) { | |
| 168 case HTMLInputElement::TEXT: | |
| 169 case HTMLInputElement::ISINDEX: | |
| 170 isTextElement = true; | |
| 171 break; | |
| 172 case HTMLInputElement::PASSWORD: | |
| 173 // Don't store passwords! This is most likely an https anyway. | |
| 174 // Fall through. | |
| 175 case HTMLInputElement::FILE: | |
| 176 // Too big, don't try to index this. | |
| 177 return 0; | |
| 178 default: | |
| 179 // All other input types are indexable. | |
| 180 break; | |
| 181 } | |
| 182 } | |
| 183 | |
| 184 FormDataList dataList(encoding); | |
| 185 if (!formElement->appendFormData(dataList, false)) | |
| 186 continue; | |
| 187 | |
| 188 const Vector<FormDataList::Item>& itemList = dataList.list(); | |
| 189 if (isTextElement && !itemList.isEmpty()) { | |
| 190 if (textElement) { | |
| 191 // The auto-complete bar only knows how to fill in one value. | |
| 192 // This form has multiple fields; don't treat it as searchable. | |
| 193 return false; | |
| 194 } | |
| 195 textElement = static_cast<HTMLInputElement*>(formElement); | |
| 196 } | |
| 197 for (Vector<FormDataList::Item>::const_iterator j(itemList.begin()); j != itemList.end(); ++j) { | |
| 198 // Handle ISINDEX / <input name=isindex> specially, but only if it's | |
| 199 // the first entry. | |
| 200 if (!encodedString->isEmpty() || j->data() != "isindex") { | |
| 201 if (!encodedString->isEmpty()) | |
| 202 encodedString->append('&'); | |
| 203 FormDataBuilder::encodeStringAsFormData(*encodedString, j->data()); | |
| 204 encodedString->append('='); | |
| 205 } | |
| 206 ++j; | |
| 207 if (formElement == textElement) | |
| 208 encodedString->append("{searchTerms}", 13); | |
| 209 else | |
| 210 FormDataBuilder::encodeStringAsFormData(*encodedString, j->data()); | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 return textElement; | |
| 215 } | |
| 216 | |
| 217 } // namespace | |
| 218 | |
| 219 namespace WebKit { | |
| 220 | |
| 221 WebSearchableFormData::WebSearchableFormData(const WebFormElement& form) | |
| 222 { | |
| 223 RefPtr<HTMLFormElement> formElement = form.operator PassRefPtr<HTMLFormElement>(); | |
| 224 const Frame* frame = formElement->document()->frame(); | |
| 225 if (!frame) | |
| 226 return; | |
| 227 | |
| 228 // Only consider forms that GET data and the action targets an http page. | |
| 229 if (equalIgnoringCase(formElement->getAttribute(HTMLNames::methodAttr), "post") || !IsHTTPFormSubmit(formElement.get())) | |
| 230 return; | |
| 231 | |
| 232 HTMLFormControlElement* firstSubmitButton = GetButtonToActivate(formElement.get()); | |
| 233 if (firstSubmitButton) { | |
| 234 // The form does not have an active submit button, make the first button | |
| 235 // active. We need to do this, otherwise the URL will not contain the | |
| 236 // name of the submit button. | |
| 237 firstSubmitButton->setActivatedSubmit(true); | |
| 238 } | |
| 239 Vector<char> encodedString; | |
| 240 String encoding; | |
| 241 bool hasElement = HasSuitableTextElement(formElement.get(), &encodedString, &encoding); | |
| 242 if (firstSubmitButton) | |
| 243 firstSubmitButton->setActivatedSubmit(false); | |
| 244 if (!hasElement) { | |
| 245 // Not a searchable form. | |
| 246 return; | |
| 247 } | |
| 248 | |
| 249 String action(formElement->action()); | |
| 250 KURL url(frame->loader()->completeURL(action.isNull() ? "" : action)); | |
| 251 RefPtr<FormData> formData = FormData::create(encodedString); | |
| 252 url.setQuery(formData->flattenToString()); | |
| 253 m_url = url; | |
| 254 m_encoding = encoding; | |
| 255 } | |
| 256 | |
| 257 } // namespace WebKit | |
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Chromium Code Reviews
Issue 385057:
Deleted webkit/api which now lives in webkit.org (Closed)
