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// Copyright 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 "chrome/browser/ui/search/instant_overlay.h"
#include "base/auto_reset.h"
#include "base/supports_user_data.h"
#include "chrome/browser/search/search.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/web_contents.h"
namespace {
int kUserDataKey;
class InstantOverlayUserData : public base::SupportsUserData::Data {
public:
explicit InstantOverlayUserData(InstantOverlay* overlay)
: overlay_(overlay) {}
virtual InstantOverlay* overlay() const { return overlay_; }
private:
virtual ~InstantOverlayUserData() {}
InstantOverlay* const overlay_;
DISALLOW_COPY_AND_ASSIGN(InstantOverlayUserData);
};
} // namespace
// static
InstantOverlay* InstantOverlay::FromWebContents(
const content::WebContents* web_contents) {
InstantOverlayUserData* data = static_cast<InstantOverlayUserData*>(
web_contents->GetUserData(&kUserDataKey));
return data ? data->overlay() : NULL;
}
InstantOverlay::InstantOverlay(InstantController* controller,
const std::string& instant_url)
: InstantPage(controller),
loader_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
instant_url_(instant_url),
is_stale_(false),
is_pointer_down_from_activate_(false) {
}
InstantOverlay::~InstantOverlay() {
}
void InstantOverlay::InitContents(Profile* profile,
const content::WebContents* active_tab) {
loader_.Init(GURL(instant_url_), profile, active_tab,
base::Bind(&InstantOverlay::HandleStalePage,
base::Unretained(this)));
SetContents(loader_.contents());
contents()->SetUserData(&kUserDataKey, new InstantOverlayUserData(this));
loader_.Load();
}
scoped_ptr<content::WebContents> InstantOverlay::ReleaseContents() {
contents()->RemoveUserData(&kUserDataKey);
SetContents(NULL);
return loader_.ReleaseContents();
}
void InstantOverlay::DidNavigate(
const history::HistoryAddPageArgs& add_page_args) {
last_navigation_ = add_page_args;
}
void InstantOverlay::Update(const string16& text,
size_t selection_start,
size_t selection_end,
bool verbatim) {
last_navigation_ = history::HistoryAddPageArgs();
InstantPage::Update(text, selection_start, selection_end, verbatim);
}
bool InstantOverlay::ShouldProcessRenderViewCreated() {
return true;
}
bool InstantOverlay::ShouldProcessRenderViewGone() {
return true;
}
bool InstantOverlay::ShouldProcessAboutToNavigateMainFrame() {
return true;
}
bool InstantOverlay::ShouldProcessSetSuggestions() {
return true;
}
bool InstantOverlay::ShouldProcessShowInstantOverlay() {
return true;
}
bool InstantOverlay::ShouldProcessNavigateToURL() {
return true;
}
void InstantOverlay::OnSwappedContents() {
contents()->RemoveUserData(&kUserDataKey);
SetContents(loader_.contents());
contents()->SetUserData(&kUserDataKey, new InstantOverlayUserData(this));
instant_controller()->SwappedOverlayContents();
}
void InstantOverlay::OnFocus() {
// The overlay is getting focus. Equivalent to it being clicked.
base::AutoReset<bool> reset(&is_pointer_down_from_activate_, true);
instant_controller()->FocusedOverlayContents();
}
void InstantOverlay::OnMouseDown() {
is_pointer_down_from_activate_ = true;
}
void InstantOverlay::OnMouseUp() {
if (is_pointer_down_from_activate_) {
is_pointer_down_from_activate_ = false;
instant_controller()->CommitIfPossible(INSTANT_COMMIT_FOCUS_LOST);
}
}
content::WebContents* InstantOverlay::OpenURLFromTab(
content::WebContents* source,
const content::OpenURLParams& params) {
if (!supports_instant()) {
// If the page doesn't yet support Instant, it hasn't fully loaded.
// This is a redirect that we should allow. http://crbug.com/177948
content::NavigationController::LoadURLParams load_params(params.url);
load_params.transition_type = params.transition;
load_params.referrer = params.referrer;
load_params.extra_headers = params.extra_headers;
load_params.is_renderer_initiated = params.is_renderer_initiated;
load_params.transferred_global_request_id =
params.transferred_global_request_id;
load_params.is_cross_site_redirect = params.is_cross_site_redirect;
contents()->GetController().LoadURLWithParams(load_params);
return contents();
}
// We will allow the navigate to continue if we are able to commit the
// overlay.
//
// First, cache the overlay contents since committing it will cause the
// contents to be released (and be set to NULL).
content::WebContents* overlay = contents();
if (instant_controller()->CommitIfPossible(INSTANT_COMMIT_NAVIGATED)) {
// If the commit was successful, the overlay's delegate should be the tab
// strip, which will be able to handle the navigation.
DCHECK_NE(&loader_, overlay->GetDelegate());
return overlay->GetDelegate()->OpenURLFromTab(source, params);
}
return NULL;
}
void InstantOverlay::LoadCompletedMainFrame() {
instant_controller()->OverlayLoadCompletedMainFrame();
}
void InstantOverlay::HandleStalePage() {
is_stale_ = true;
instant_controller()->ReloadOverlayIfStale();
}
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