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// Copyright (c) 2013 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 "content/public/renderer/history_item_serialization.h"
#include "content/common/page_state_serialization.h"
#include "content/public/common/page_state.h"
#include "third_party/WebKit/public/platform/WebHTTPBody.h"
#include "third_party/WebKit/public/platform/WebPoint.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/platform/WebVector.h"
#include "third_party/WebKit/public/web/WebHistoryItem.h"
#include "third_party/WebKit/public/web/WebSerializedScriptValue.h"
using blink::WebHTTPBody;
using blink::WebHistoryItem;
using blink::WebSerializedScriptValue;
using blink::WebString;
using blink::WebVector;
namespace content {
namespace {
void ToNullableString16Vector(const WebVector<WebString>& input,
std::vector<base::NullableString16>* output) {
output->reserve(input.size());
for (size_t i = 0; i < input.size(); ++i)
output->push_back(input[i]);
}
void ToExplodedHttpBodyElement(const WebHTTPBody::Element& input,
ExplodedHttpBodyElement* output) {
switch (input.type) {
case WebHTTPBody::Element::TypeData:
output->data.assign(input.data.data(), input.data.size());
break;
case WebHTTPBody::Element::TypeFile:
output->file_path = input.filePath;
output->file_start = input.fileStart;
output->file_length = input.fileLength;
output->file_modification_time = input.modificationTime;
break;
case WebHTTPBody::Element::TypeFileSystemURL:
output->filesystem_url = input.fileSystemURL;
output->file_start = input.fileStart;
output->file_length = input.fileLength;
output->file_modification_time = input.modificationTime;
break;
case WebHTTPBody::Element::TypeBlob:
output->blob_uuid = input.blobUUID.utf8();
break;
}
}
void AppendHTTPBodyElement(const ExplodedHttpBodyElement& element,
WebHTTPBody* http_body) {
switch (element.type) {
case WebHTTPBody::Element::TypeData:
http_body->appendData(element.data);
break;
case WebHTTPBody::Element::TypeFile:
http_body->appendFileRange(
element.file_path,
element.file_start,
element.file_length,
element.file_modification_time);
break;
case WebHTTPBody::Element::TypeFileSystemURL:
http_body->appendFileSystemURLRange(
element.filesystem_url,
element.file_start,
element.file_length,
element.file_modification_time);
break;
case WebHTTPBody::Element::TypeBlob:
http_body->appendBlob(WebString::fromUTF8(element.blob_uuid));
break;
}
}
bool RecursivelyGenerateFrameState(const WebHistoryItem& item,
ExplodedFrameState* state) {
state->url_string = item.urlString();
state->original_url_string = item.originalURLString();
state->referrer = item.referrer();
state->target = item.target();
if (!item.stateObject().isNull())
state->state_object = item.stateObject().toString();
state->scroll_offset = item.scrollOffset();
state->item_sequence_number = item.itemSequenceNumber();
state->document_sequence_number =
item.documentSequenceNumber();
state->target_frame_id = item.targetFrameID();
state->page_scale_factor = item.pageScaleFactor();
ToNullableString16Vector(item.documentState(), &state->document_state);
state->http_body.http_content_type = item.httpContentType();
const WebHTTPBody& http_body = item.httpBody();
if (!(state->http_body.is_null = http_body.isNull())) {
state->http_body.identifier = http_body.identifier();
state->http_body.elements.resize(http_body.elementCount());
for (size_t i = 0; i < http_body.elementCount(); ++i) {
WebHTTPBody::Element element;
http_body.elementAt(i, element);
ToExplodedHttpBodyElement(element, &state->http_body.elements[i]);
}
state->http_body.contains_passwords = http_body.containsPasswordData();
}
const WebVector<WebHistoryItem>& children = item.children();
state->children.resize(children.size());
for (size_t i = 0; i < children.size(); ++i) {
if (!RecursivelyGenerateFrameState(children[i], &state->children[i]))
return false;
}
return true;
}
bool RecursivelyGenerateHistoryItem(const ExplodedFrameState& state,
WebHistoryItem* item) {
item->setURLString(state.url_string);
item->setOriginalURLString(state.original_url_string);
item->setReferrer(state.referrer);
item->setTarget(state.target);
if (!state.state_object.is_null()) {
item->setStateObject(
WebSerializedScriptValue::fromString(state.state_object));
}
item->setDocumentState(state.document_state);
item->setScrollOffset(state.scroll_offset);
item->setPageScaleFactor(state.page_scale_factor);
// These values are generated at WebHistoryItem construction time, and we
// only want to override those new values with old values if the old values
// are defined. A value of 0 means undefined in this context.
if (state.item_sequence_number)
item->setItemSequenceNumber(state.item_sequence_number);
if (state.document_sequence_number)
item->setDocumentSequenceNumber(state.document_sequence_number);
item->setTargetFrameID(state.target_frame_id);
item->setHTTPContentType(state.http_body.http_content_type);
if (!state.http_body.is_null) {
WebHTTPBody http_body;
http_body.initialize();
http_body.setIdentifier(state.http_body.identifier);
for (size_t i = 0; i < state.http_body.elements.size(); ++i)
AppendHTTPBodyElement(state.http_body.elements[i], &http_body);
item->setHTTPBody(http_body);
}
for (size_t i = 0; i < state.children.size(); ++i) {
WebHistoryItem child_item;
child_item.initialize();
if (!RecursivelyGenerateHistoryItem(state.children[i], &child_item))
return false;
item->appendToChildren(child_item);
}
return true;
}
} // namespace
PageState HistoryItemToPageState(const WebHistoryItem& item) {
ExplodedPageState state;
ToNullableString16Vector(item.getReferencedFilePaths(),
&state.referenced_files);
if (!RecursivelyGenerateFrameState(item, &state.top))
return PageState();
std::string encoded_data;
if (!EncodePageState(state, &encoded_data))
return PageState();
return PageState::CreateFromEncodedData(encoded_data);
}
WebHistoryItem PageStateToHistoryItem(const PageState& page_state) {
ExplodedPageState state;
if (!DecodePageState(page_state.ToEncodedData(), &state))
return WebHistoryItem();
WebHistoryItem item;
item.initialize();
if (!RecursivelyGenerateHistoryItem(state.top, &item))
return WebHistoryItem();
return item;
}
} // namespace content
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