// Copyright 2014 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 "web/WebRemoteFrameImpl.h"

#include "core/dom/Fullscreen.h"
#include "core/dom/RemoteSecurityContext.h"
#include "core/dom/SecurityContext.h"
#include "core/frame/FrameView.h"
#include "core/frame/Settings.h"
#include "core/frame/csp/ContentSecurityPolicy.h"
#include "core/html/HTMLFrameOwnerElement.h"
#include "core/layout/LayoutObject.h"
#include "core/page/Page.h"
#include "platform/heap/Handle.h"
#include "public/platform/WebFloatRect.h"
#include "public/platform/WebRect.h"
#include "public/web/WebDocument.h"
#include "public/web/WebFrameOwnerProperties.h"
#include "public/web/WebPerformance.h"
#include "public/web/WebRange.h"
#include "public/web/WebTreeScopeType.h"
#include "web/RemoteFrameOwner.h"
#include "web/WebLocalFrameImpl.h"
#include "web/WebViewImpl.h"
#include <v8/include/v8.h>

namespace blink {

WebRemoteFrame* WebRemoteFrame::create(WebTreeScopeType scope,
                                       WebRemoteFrameClient* client,
                                       WebFrame* opener) {
  return WebRemoteFrameImpl::create(scope, client, opener);
}

WebRemoteFrameImpl* WebRemoteFrameImpl::create(WebTreeScopeType scope,
                                               WebRemoteFrameClient* client,
                                               WebFrame* opener) {
  WebRemoteFrameImpl* frame = new WebRemoteFrameImpl(scope, client);
  frame->setOpener(opener);
  return frame;
}

WebRemoteFrameImpl::~WebRemoteFrameImpl() {}

DEFINE_TRACE(WebRemoteFrameImpl) {
  visitor->trace(m_frameClient);
  visitor->trace(m_frame);
  visitor->template registerWeakMembers<WebFrame, &WebFrame::clearWeakFrames>(
      this);
  WebFrame::traceFrames(visitor, this);
  WebFrameImplBase::trace(visitor);
}

bool WebRemoteFrameImpl::isWebLocalFrame() const {
  return false;
}

WebLocalFrame* WebRemoteFrameImpl::toWebLocalFrame() {
  NOTREACHED();
  return nullptr;
}

bool WebRemoteFrameImpl::isWebRemoteFrame() const {
  return true;
}

WebRemoteFrame* WebRemoteFrameImpl::toWebRemoteFrame() {
  return this;
}

void WebRemoteFrameImpl::close() {
  m_selfKeepAlive.clear();
}

WebString WebRemoteFrameImpl::uniqueName() const {
  NOTREACHED();
  return WebString();
}

WebString WebRemoteFrameImpl::assignedName() const {
  NOTREACHED();
  return WebString();
}

void WebRemoteFrameImpl::setName(const WebString&) {
  NOTREACHED();
}

WebVector<WebIconURL> WebRemoteFrameImpl::iconURLs(int iconTypesMask) const {
  NOTREACHED();
  return WebVector<WebIconURL>();
}

void WebRemoteFrameImpl::setRemoteWebLayer(WebLayer* webLayer) {
  if (!frame())
    return;

  frame()->setRemotePlatformLayer(webLayer);
}

void WebRemoteFrameImpl::setSharedWorkerRepositoryClient(
    WebSharedWorkerRepositoryClient*) {
  NOTREACHED();
}

void WebRemoteFrameImpl::setCanHaveScrollbars(bool) {
  NOTREACHED();
}

WebSize WebRemoteFrameImpl::scrollOffset() const {
  NOTREACHED();
  return WebSize();
}

void WebRemoteFrameImpl::setScrollOffset(const WebSize&) {
  NOTREACHED();
}

WebSize WebRemoteFrameImpl::contentsSize() const {
  NOTREACHED();
  return WebSize();
}

bool WebRemoteFrameImpl::hasVisibleContent() const {
  NOTREACHED();
  return false;
}

WebRect WebRemoteFrameImpl::visibleContentRect() const {
  NOTREACHED();
  return WebRect();
}

bool WebRemoteFrameImpl::hasHorizontalScrollbar() const {
  NOTREACHED();
  return false;
}

bool WebRemoteFrameImpl::hasVerticalScrollbar() const {
  NOTREACHED();
  return false;
}

WebView* WebRemoteFrameImpl::view() const {
  if (!frame())
    return nullptr;
  return WebViewImpl::fromPage(frame()->page());
}

WebDocument WebRemoteFrameImpl::document() const {
  // TODO(dcheng): this should also ASSERT_NOT_REACHED, but a lot of
  // code tries to access the document of a remote frame at the moment.
  return WebDocument();
}

WebPerformance WebRemoteFrameImpl::performance() const {
  NOTREACHED();
  return WebPerformance();
}

void WebRemoteFrameImpl::dispatchUnloadEvent() {
  NOTREACHED();
}

void WebRemoteFrameImpl::executeScript(const WebScriptSource&) {
  NOTREACHED();
}

void WebRemoteFrameImpl::executeScriptInIsolatedWorld(
    int worldID,
    const WebScriptSource* sources,
    unsigned numSources,
    int extensionGroup) {
  NOTREACHED();
}

void WebRemoteFrameImpl::setIsolatedWorldSecurityOrigin(
    int worldID,
    const WebSecurityOrigin&) {
  NOTREACHED();
}

void WebRemoteFrameImpl::setIsolatedWorldContentSecurityPolicy(
    int worldID,
    const WebString&) {
  NOTREACHED();
}

void WebRemoteFrameImpl::addMessageToConsole(const WebConsoleMessage&) {
  NOTREACHED();
}

void WebRemoteFrameImpl::collectGarbage() {
  NOTREACHED();
}

v8::Local<v8::Value> WebRemoteFrameImpl::executeScriptAndReturnValue(
    const WebScriptSource&) {
  NOTREACHED();
  return v8::Local<v8::Value>();
}

void WebRemoteFrameImpl::executeScriptInIsolatedWorld(
    int worldID,
    const WebScriptSource* sourcesIn,
    unsigned numSources,
    int extensionGroup,
    WebVector<v8::Local<v8::Value>>* results) {
  NOTREACHED();
}

v8::Local<v8::Value> WebRemoteFrameImpl::callFunctionEvenIfScriptDisabled(
    v8::Local<v8::Function>,
    v8::Local<v8::Value>,
    int argc,
    v8::Local<v8::Value> argv[]) {
  NOTREACHED();
  return v8::Local<v8::Value>();
}

v8::Local<v8::Context> WebRemoteFrameImpl::mainWorldScriptContext() const {
  NOTREACHED();
  return v8::Local<v8::Context>();
}

v8::Local<v8::Context> WebRemoteFrameImpl::deprecatedMainWorldScriptContext()
    const {
  return toV8Context(frame(), DOMWrapperWorld::mainWorld());
}

void WebRemoteFrameImpl::reload(WebFrameLoadType) {
  NOTREACHED();
}

void WebRemoteFrameImpl::reloadWithOverrideURL(const WebURL& overrideUrl,
                                               WebFrameLoadType) {
  NOTREACHED();
}

void WebRemoteFrameImpl::loadRequest(const WebURLRequest&) {
  NOTREACHED();
}

void WebRemoteFrameImpl::loadHTMLString(const WebData& html,
                                        const WebURL& baseURL,
                                        const WebURL& unreachableURL,
                                        bool replace) {
  NOTREACHED();
}

void WebRemoteFrameImpl::stopLoading() {
  // TODO(dcheng,japhet): Calling this method should stop loads
  // in all subframes, both remote and local.
}

WebDataSource* WebRemoteFrameImpl::provisionalDataSource() const {
  NOTREACHED();
  return nullptr;
}

WebDataSource* WebRemoteFrameImpl::dataSource() const {
  NOTREACHED();
  return nullptr;
}

void WebRemoteFrameImpl::enableViewSourceMode(bool enable) {
  NOTREACHED();
}

bool WebRemoteFrameImpl::isViewSourceModeEnabled() const {
  NOTREACHED();
  return false;
}

void WebRemoteFrameImpl::setReferrerForRequest(WebURLRequest&,
                                               const WebURL& referrer) {
  NOTREACHED();
}

void WebRemoteFrameImpl::dispatchWillSendRequest(WebURLRequest&) {
  NOTREACHED();
}

WebAssociatedURLLoader* WebRemoteFrameImpl::createAssociatedURLLoader(
    const WebAssociatedURLLoaderOptions&) {
  NOTREACHED();
  return nullptr;
}

unsigned WebRemoteFrameImpl::unloadListenerCount() const {
  NOTREACHED();
  return 0;
}

int WebRemoteFrameImpl::printBegin(const WebPrintParams&,
                                   const WebNode& constrainToNode) {
  NOTREACHED();
  return 0;
}

float WebRemoteFrameImpl::printPage(int pageToPrint, WebCanvas*) {
  NOTREACHED();
  return 0.0;
}

float WebRemoteFrameImpl::getPrintPageShrink(int page) {
  NOTREACHED();
  return 0.0;
}

void WebRemoteFrameImpl::printEnd() {
  NOTREACHED();
}

bool WebRemoteFrameImpl::isPrintScalingDisabledForPlugin(const WebNode&) {
  NOTREACHED();
  return false;
}

void WebRemoteFrameImpl::printPagesWithBoundaries(WebCanvas*, const WebSize&) {
  NOTREACHED();
}

void WebRemoteFrameImpl::dispatchMessageEventWithOriginCheck(
    const WebSecurityOrigin& intendedTargetOrigin,
    const WebDOMEvent&) {
  NOTREACHED();
}

WebRect WebRemoteFrameImpl::selectionBoundsRect() const {
  NOTREACHED();
  return WebRect();
}

WebString WebRemoteFrameImpl::layerTreeAsText(bool showDebugInfo) const {
  NOTREACHED();
  return WebString();
}

WebLocalFrame* WebRemoteFrameImpl::createLocalChild(
    WebTreeScopeType scope,
    const WebString& name,
    const WebString& uniqueName,
    WebSandboxFlags sandboxFlags,
    WebFrameClient* client,
    WebFrame* previousSibling,
    const WebFrameOwnerProperties& frameOwnerProperties,
    WebFrame* opener) {
  WebLocalFrameImpl* child = WebLocalFrameImpl::create(scope, client, opener);
  insertAfter(child, previousSibling);
  RemoteFrameOwner* owner = RemoteFrameOwner::create(
      static_cast<SandboxFlags>(sandboxFlags), frameOwnerProperties);
  // FIXME: currently this calls LocalFrame::init() on the created LocalFrame,
  // which may result in the browser observing two navigations to about:blank
  // (one from the initial frame creation, and one from swapping it into the
  // remote process).  FrameLoader might need a special initialization function
  // for this case to avoid that duplicate navigation.
  child->initializeCoreFrame(frame()->host(), owner, name, uniqueName);
  // Partially related with the above FIXME--the init() call may trigger JS
  // dispatch. However,
  // if the parent is remote, it should never be detached synchronously...
  DCHECK(child->frame());
  return child;
}

void WebRemoteFrameImpl::initializeCoreFrame(FrameHost* host,
                                             FrameOwner* owner,
                                             const AtomicString& name,
                                             const AtomicString& uniqueName) {
  setCoreFrame(RemoteFrame::create(m_frameClient.get(), host, owner));
  frame()->createView();
  m_frame->tree().setPrecalculatedName(name, uniqueName);
}

WebRemoteFrame* WebRemoteFrameImpl::createRemoteChild(
    WebTreeScopeType scope,
    const WebString& name,
    const WebString& uniqueName,
    WebSandboxFlags sandboxFlags,
    WebRemoteFrameClient* client,
    WebFrame* opener) {
  WebRemoteFrameImpl* child = WebRemoteFrameImpl::create(scope, client, opener);
  appendChild(child);
  RemoteFrameOwner* owner = RemoteFrameOwner::create(
      static_cast<SandboxFlags>(sandboxFlags), WebFrameOwnerProperties());
  child->initializeCoreFrame(frame()->host(), owner, name, uniqueName);
  return child;
}

void WebRemoteFrameImpl::setCoreFrame(RemoteFrame* frame) {
  m_frame = frame;
}

WebRemoteFrameImpl* WebRemoteFrameImpl::fromFrame(RemoteFrame& frame) {
  if (!frame.client())
    return nullptr;
  return static_cast<RemoteFrameClientImpl*>(frame.client())->webFrame();
}

void WebRemoteFrameImpl::setReplicatedOrigin(
    const WebSecurityOrigin& origin) const {
  DCHECK(frame());
  frame()->securityContext()->setReplicatedOrigin(origin);

  // If the origin of a remote frame changed, the accessibility object for the
  // owner element now points to a different child.
  //
  // TODO(dmazzoni, dcheng): there's probably a better way to solve this.
  // Run SitePerProcessAccessibilityBrowserTest.TwoCrossSiteNavigations to
  // ensure an alternate fix works.  http://crbug.com/566222
  FrameOwner* owner = frame()->owner();
  if (owner && owner->isLocal()) {
    HTMLElement* ownerElement = toHTMLFrameOwnerElement(owner);
    AXObjectCache* cache = ownerElement->document().existingAXObjectCache();
    if (cache)
      cache->childrenChanged(ownerElement);
  }
}

void WebRemoteFrameImpl::setReplicatedSandboxFlags(
    WebSandboxFlags flags) const {
  DCHECK(frame());
  frame()->securityContext()->enforceSandboxFlags(
      static_cast<SandboxFlags>(flags));
}

void WebRemoteFrameImpl::setReplicatedName(const WebString& name,
                                           const WebString& uniqueName) const {
  DCHECK(frame());
  frame()->tree().setPrecalculatedName(name, uniqueName);
}

void WebRemoteFrameImpl::addReplicatedContentSecurityPolicyHeader(
    const WebString& headerValue,
    WebContentSecurityPolicyType type,
    WebContentSecurityPolicySource source) const {
  frame()->securityContext()->contentSecurityPolicy()->addPolicyFromHeaderValue(
      headerValue, static_cast<ContentSecurityPolicyHeaderType>(type),
      static_cast<ContentSecurityPolicyHeaderSource>(source));
}

void WebRemoteFrameImpl::resetReplicatedContentSecurityPolicy() const {
  frame()->securityContext()->resetReplicatedContentSecurityPolicy();
}

void WebRemoteFrameImpl::setReplicatedInsecureRequestPolicy(
    WebInsecureRequestPolicy policy) const {
  DCHECK(frame());
  frame()->securityContext()->setInsecureRequestPolicy(policy);
}

void WebRemoteFrameImpl::setReplicatedPotentiallyTrustworthyUniqueOrigin(
    bool isUniqueOriginPotentiallyTrustworthy) const {
  DCHECK(frame());
  // If |isUniqueOriginPotentiallyTrustworthy| is true, then the origin must be
  // unique.
  DCHECK(!isUniqueOriginPotentiallyTrustworthy ||
         frame()->securityContext()->getSecurityOrigin()->isUnique());
  frame()
      ->securityContext()
      ->getSecurityOrigin()
      ->setUniqueOriginIsPotentiallyTrustworthy(
          isUniqueOriginPotentiallyTrustworthy);
}

void WebRemoteFrameImpl::DispatchLoadEventForFrameOwner() const {
  DCHECK(frame()->owner()->isLocal());
  frame()->owner()->dispatchLoad();
}

void WebRemoteFrameImpl::didStartLoading() {
  frame()->setIsLoading(true);
}

void WebRemoteFrameImpl::didStopLoading() {
  frame()->setIsLoading(false);
  if (parent() && parent()->isWebLocalFrame()) {
    WebLocalFrameImpl* parentFrame =
        toWebLocalFrameImpl(parent()->toWebLocalFrame());
    parentFrame->frame()->loader().checkCompleted();
  }
}

bool WebRemoteFrameImpl::isIgnoredForHitTest() const {
  HTMLFrameOwnerElement* owner = frame()->deprecatedLocalOwner();
  if (!owner || !owner->layoutObject())
    return false;
  return owner->layoutObject()->style()->pointerEvents() == PE_NONE;
}

void WebRemoteFrameImpl::willEnterFullscreen() {
  // This should only ever be called when the FrameOwner is local.
  HTMLFrameOwnerElement* ownerElement =
      toHTMLFrameOwnerElement(frame()->owner());

  // Call requestFullscreen() on |ownerElement| to make it the provisional
  // fullscreen element in FullscreenController, and to prepare
  // fullscreenchange events that will need to fire on it and its (local)
  // ancestors. The events will be triggered if/when fullscreen is entered.
  //
  // Passing |forCrossProcessAncestor| to requestFullscreen is necessary
  // because:
  // - |ownerElement| will need :-webkit-full-screen-ancestor style in
  //   addition to :-webkit-full-screen.
  // - there's no need to resend the ToggleFullscreen IPC to the browser
  //   process.
  //
  // TODO(alexmos): currently, this assumes prefixed requests, but in the
  // future, this should plumb in information about which request type
  // (prefixed or unprefixed) to use for firing fullscreen events.
  Fullscreen::from(ownerElement->document())
      .requestFullscreen(*ownerElement, Fullscreen::PrefixedRequest,
                         true /* forCrossProcessAncestor */);
}

WebRemoteFrameImpl::WebRemoteFrameImpl(WebTreeScopeType scope,
                                       WebRemoteFrameClient* client)
    : WebRemoteFrame(scope),
      m_frameClient(RemoteFrameClientImpl::create(this)),
      m_client(client),
      m_selfKeepAlive(this) {}

}  // namespace blink