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content / browser / host_zoom_map_impl.cc [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/host_zoom_map_impl.h"
#include <algorithm>
#include <cmath>
#include <memory>
#include <utility>
#include "base/containers/contains.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/default_clock.h"
#include "base/values.h"
#include "build/build_config.h"
#include "content/browser/renderer_host/navigation_entry_impl.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/host_zoom_map.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/resource_context.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/common/url_constants.h"
#include "net/base/url_util.h"
#include "third_party/blink/public/common/page/page_zoom.h"
#if BUILDFLAG(IS_ANDROID)
#include "base/android/jni_string.h"
#include "content/public/browser/android/browser_context_handle.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "content/public/android/content_jni_headers/HostZoomMapImpl_jni.h"
#endif
namespace content {
namespace {
std::string GetHostFromProcessFrame(RenderFrameHostImpl* rfh) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!rfh)
return std::string();
NavigationEntry* entry =
rfh->frame_tree()->controller().GetLastCommittedEntry();
if (!entry)
return std::string();
return net::GetHostOrSpecFromURL(HostZoomMap::GetURLFromEntry(entry));
}
} // namespace
GURL HostZoomMap::GetURLFromEntry(NavigationEntry* entry) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
switch (entry->GetPageType()) {
case PAGE_TYPE_ERROR:
return GURL(kUnreachableWebDataURL);
// TODO(wjmaclean): In future, give interstitial pages special treatment as
// well.
default:
return entry->GetURL();
}
}
// static
HostZoomMap* HostZoomMap::GetDefaultForBrowserContext(BrowserContext* context) {
return GetForStoragePartition(context->GetDefaultStoragePartition());
}
// static
HostZoomMap* HostZoomMap::Get(SiteInstance* instance) {
return GetForStoragePartition(
instance->GetBrowserContext()->GetStoragePartition(instance));
}
// static
HostZoomMap* HostZoomMap::GetForWebContents(WebContents* contents) {
// TODO(wjmaclean): Update this behaviour to work with OOPIF.
// See crbug.com/528407.
return Get(contents->GetSiteInstance());
}
// static
HostZoomMap* HostZoomMap::GetForStoragePartition(
StoragePartition* storage_partition) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
CHECK(storage_partition);
return storage_partition->GetHostZoomMap();
}
// Helper function for setting/getting zoom levels for WebContents without
// having to import HostZoomMapImpl everywhere.
double HostZoomMap::GetZoomLevel(WebContents* web_contents) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
HostZoomMapImpl* host_zoom_map = static_cast<HostZoomMapImpl*>(
HostZoomMap::GetForWebContents(web_contents));
return host_zoom_map->GetZoomLevelForWebContents(
static_cast<WebContentsImpl*>(web_contents));
}
void HostZoomMap::SetZoomLevel(WebContents* web_contents, double level) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
HostZoomMapImpl* host_zoom_map = static_cast<HostZoomMapImpl*>(
HostZoomMap::GetForWebContents(web_contents));
host_zoom_map->SetZoomLevelForWebContents(
static_cast<WebContentsImpl*>(web_contents), level);
}
void HostZoomMap::SendErrorPageZoomLevelRefresh(WebContents* web_contents) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
HostZoomMapImpl* host_zoom_map =
static_cast<HostZoomMapImpl*>(HostZoomMap::GetDefaultForBrowserContext(
web_contents->GetBrowserContext()));
host_zoom_map->SendErrorPageZoomLevelRefresh();
}
HostZoomMapImpl::HostZoomMapImpl()
: default_zoom_level_(0.0),
clock_(base::DefaultClock::GetInstance()) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
}
void HostZoomMapImpl::CopyFrom(HostZoomMap* copy_interface) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
HostZoomMapImpl* copy = static_cast<HostZoomMapImpl*>(copy_interface);
host_zoom_levels_.insert(copy->host_zoom_levels_.begin(),
copy->host_zoom_levels_.end());
for (const auto& it : copy->scheme_host_zoom_levels_) {
const std::string& host = it.first;
scheme_host_zoom_levels_[host] = HostZoomLevels();
scheme_host_zoom_levels_[host].insert(it.second.begin(), it.second.end());
}
default_zoom_level_ = copy->default_zoom_level_;
host_zoom_levels_for_preview_.insert(
copy->host_zoom_levels_for_preview_.begin(),
copy->host_zoom_levels_for_preview_.end());
}
double HostZoomMapImpl::GetZoomLevelForHost(const std::string& host) const {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
const auto it = host_zoom_levels_.find(host);
return it != host_zoom_levels_.end() ? it->second.level : default_zoom_level_;
}
bool HostZoomMapImpl::HasZoomLevel(const std::string& scheme,
const std::string& host) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
auto scheme_iterator(scheme_host_zoom_levels_.find(scheme));
const HostZoomLevels& zoom_levels =
(scheme_iterator != scheme_host_zoom_levels_.end())
? scheme_iterator->second
: host_zoom_levels_;
return base::Contains(zoom_levels, host);
}
double HostZoomMapImpl::GetZoomLevelForHostAndScheme(const std::string& scheme,
const std::string& host) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
auto scheme_iterator(scheme_host_zoom_levels_.find(scheme));
if (scheme_iterator != scheme_host_zoom_levels_.end()) {
auto i(scheme_iterator->second.find(host));
if (i != scheme_iterator->second.end())
return i->second.level;
}
return GetZoomLevelForHost(host);
}
#if BUILDFLAG(IS_ANDROID)
double HostZoomMapImpl::GetZoomLevelForHostAndSchemeAndroid(
const std::string& scheme,
const std::string& host) {
double zoom_level = GetZoomLevelForHostAndScheme(scheme, host);
// On Android, we will use a zoom level that considers the current OS-level
// setting. For this we pass the given |level| through JNI to the Java-side
// code, which can access the Android configuration and |fontScale|. This
// method will return the adjusted zoom level considering OS settings. Note
// that the OS |fontScale| will be factored in only when the Page Zoom feature
// is enabled.
JNIEnv* env = jni_zero::AttachCurrentThread();
double adjusted_zoom_level =
Java_HostZoomMapImpl_getAdjustedZoomLevel(env, zoom_level);
return adjusted_zoom_level;
}
#endif
HostZoomMap::ZoomLevelVector HostZoomMapImpl::GetAllZoomLevels() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
HostZoomMap::ZoomLevelVector result;
result.reserve(host_zoom_levels_.size() + scheme_host_zoom_levels_.size());
for (const auto& entry : host_zoom_levels_) {
ZoomLevelChange change = {
HostZoomMap::ZOOM_CHANGED_FOR_HOST,
entry.first, // host
std::string(), // scheme
entry.second.level, // zoom level
entry.second.last_modified // last modified
};
result.push_back(change);
}
for (const auto& scheme_entry : scheme_host_zoom_levels_) {
const std::string& scheme = scheme_entry.first;
const HostZoomLevels& host_zoom_levels = scheme_entry.second;
for (const auto& entry : host_zoom_levels) {
ZoomLevelChange change = {
HostZoomMap::ZOOM_CHANGED_FOR_SCHEME_AND_HOST,
entry.first, // host
scheme, // scheme
entry.second.level, // zoom level
entry.second.last_modified // last modified
};
result.push_back(change);
}
}
return result;
}
void HostZoomMapImpl::SetZoomLevelForHost(const std::string& host,
double level) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
base::Time last_modified = clock_->Now();
SetZoomLevelForHostInternal(host, level, last_modified);
}
void HostZoomMapImpl::InitializeZoomLevelForHost(const std::string& host,
double level,
base::Time last_modified) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
SetZoomLevelForHostInternal(host, level, last_modified);
}
void HostZoomMapImpl::SetZoomLevelForHostInternal(const std::string& host,
double level,
base::Time last_modified) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (blink::ZoomValuesEqual(level, default_zoom_level_)) {
host_zoom_levels_.erase(host);
} else {
ZoomLevel& zoomLevel = host_zoom_levels_[host];
zoomLevel.level = level;
zoomLevel.last_modified = last_modified;
}
// TODO(wjmaclean) Should we use a GURL here? crbug.com/384486
SendZoomLevelChange(std::string(), host);
HostZoomMap::ZoomLevelChange change;
change.mode = HostZoomMap::ZOOM_CHANGED_FOR_HOST;
change.host = host;
change.zoom_level = level;
change.last_modified = last_modified;
zoom_level_changed_callbacks_.Notify(change);
}
void HostZoomMapImpl::SetZoomLevelForHostAndScheme(const std::string& scheme,
const std::string& host,
double level) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// No last_modified timestamp for scheme and host because they are
// not persistet and are used for special cases only.
scheme_host_zoom_levels_[scheme][host].level = level;
SendZoomLevelChange(scheme, host);
HostZoomMap::ZoomLevelChange change;
change.mode = HostZoomMap::ZOOM_CHANGED_FOR_SCHEME_AND_HOST;
change.host = host;
change.scheme = scheme;
change.zoom_level = level;
change.last_modified = base::Time();
zoom_level_changed_callbacks_.Notify(change);
}
double HostZoomMapImpl::GetDefaultZoomLevel() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
return default_zoom_level_;
}
void HostZoomMapImpl::SetDefaultZoomLevel(double level) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (blink::ZoomValuesEqual(level, default_zoom_level_)) {
return;
}
default_zoom_level_ = level;
// First, remove all entries that match the new default zoom level.
for (auto it = host_zoom_levels_.begin(); it != host_zoom_levels_.end();) {
if (blink::ZoomValuesEqual(it->second.level, default_zoom_level_)) {
it = host_zoom_levels_.erase(it);
} else {
it++;
}
}
// Second, update zoom levels for all pages that do not have an overriding
// entry.
for (auto* web_contents : WebContentsImpl::GetAllWebContents()) {
// Only change zoom for WebContents tied to the StoragePartition this
// HostZoomMap serves.
if (GetForWebContents(web_contents) != this)
continue;
// Get the url from the navigation controller directly, as calling
// WebContentsImpl::GetLastCommittedURL() may give us a virtual url that
// is different than the one stored in the map.
GURL url;
std::string host;
std::string scheme;
NavigationEntry* entry =
web_contents->GetController().GetLastCommittedEntry();
// It is possible for a WebContent's zoom level to be queried before
// a navigation has occurred.
if (entry) {
url = GetURLFromEntry(entry);
scheme = url.scheme();
host = net::GetHostOrSpecFromURL(url);
}
bool uses_default_zoom =
!HasZoomLevel(scheme, host) &&
!UsesTemporaryZoomLevel(
web_contents->GetPrimaryMainFrame()->GetGlobalId());
if (uses_default_zoom) {
web_contents->UpdateZoom();
HostZoomMap::ZoomLevelChange change;
change.mode = HostZoomMap::ZOOM_CHANGED_FOR_HOST;
change.host = host;
change.zoom_level = level;
zoom_level_changed_callbacks_.Notify(change);
}
}
}
base::CallbackListSubscription HostZoomMapImpl::AddZoomLevelChangedCallback(
ZoomLevelChangedCallback callback) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
return zoom_level_changed_callbacks_.Add(std::move(callback));
}
double HostZoomMapImpl::GetZoomLevelForWebContents(
WebContentsImpl* web_contents_impl) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
GlobalRenderFrameHostId rfh_id =
web_contents_impl->GetPrimaryMainFrame()->GetGlobalId();
if (UsesTemporaryZoomLevel(rfh_id))
return GetTemporaryZoomLevel(rfh_id);
// Get the url from the navigation controller directly, as calling
// WebContentsImpl::GetLastCommittedURL() may give us a virtual url that
// is different than is stored in the map.
GURL url;
NavigationEntry* entry =
web_contents_impl->GetController().GetLastCommittedEntry();
// It is possible for a WebContent's zoom level to be queried before
// a navigation has occurred.
if (entry)
url = GetURLFromEntry(entry);
#if BUILDFLAG(IS_ANDROID)
return GetZoomLevelForHostAndSchemeAndroid(url.scheme(),
net::GetHostOrSpecFromURL(url));
#else
return GetZoomLevelForHostAndScheme(url.scheme(),
net::GetHostOrSpecFromURL(url));
#endif
}
void HostZoomMapImpl::SetZoomLevelForWebContents(
WebContentsImpl* web_contents_impl,
double level) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
GlobalRenderFrameHostId rfh_id =
web_contents_impl->GetPrimaryMainFrame()->GetGlobalId();
if (UsesTemporaryZoomLevel(rfh_id)) {
SetTemporaryZoomLevel(rfh_id, level);
} else {
// Get the url from the navigation controller directly, as calling
// WebContentsImpl::GetLastCommittedURL() may give us a virtual url that
// is different than what the render frame is using. If the two don't match,
// the attempt to set the zoom will fail.
NavigationEntry* entry =
web_contents_impl->GetController().GetLastCommittedEntry();
// Tests may invoke this function with a null entry, but we don't
// want to save zoom levels in this case.
if (!entry)
return;
GURL url = GetURLFromEntry(entry);
SetZoomLevelForHost(net::GetHostOrSpecFromURL(url), level);
}
}
bool HostZoomMapImpl::UsesTemporaryZoomLevel(
const GlobalRenderFrameHostId& rfh_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
return base::Contains(temporary_zoom_levels_, rfh_id);
}
void HostZoomMapImpl::SetNoLongerUsesTemporaryZoomLevel(
const GlobalRenderFrameHostId& rfh_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
temporary_zoom_levels_.erase(rfh_id);
}
double HostZoomMapImpl::GetTemporaryZoomLevel(
const GlobalRenderFrameHostId& rfh_id) const {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
const auto it = temporary_zoom_levels_.find(rfh_id);
return it != temporary_zoom_levels_.end() ? it->second : 0;
}
void HostZoomMapImpl::SetTemporaryZoomLevel(
const GlobalRenderFrameHostId& rfh_id,
double level) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
RenderFrameHostImpl* rfh = RenderFrameHostImpl::FromID(rfh_id);
DCHECK(rfh == rfh->GetOutermostMainFrame());
temporary_zoom_levels_[rfh_id] = level;
WebContentsImpl* web_contents = WebContentsImpl::FromRenderFrameHostImpl(rfh);
web_contents->UpdateZoom();
HostZoomMap::ZoomLevelChange change;
change.mode = HostZoomMap::ZOOM_CHANGED_TEMPORARY_ZOOM;
change.host = GetHostFromProcessFrame(rfh);
change.zoom_level = level;
zoom_level_changed_callbacks_.Notify(change);
}
void HostZoomMapImpl::ClearZoomLevels(base::Time delete_begin,
base::Time delete_end) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
double default_zoom_level = GetDefaultZoomLevel();
for (const auto& zoom_level : GetAllZoomLevels()) {
if (zoom_level.scheme.empty() && delete_begin <= zoom_level.last_modified &&
(delete_end.is_null() || zoom_level.last_modified < delete_end)) {
SetZoomLevelForHost(zoom_level.host, default_zoom_level);
}
}
}
void HostZoomMapImpl::ClearTemporaryZoomLevel(
const GlobalRenderFrameHostId& rfh_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
auto it = temporary_zoom_levels_.find(rfh_id);
if (it == temporary_zoom_levels_.end())
return;
temporary_zoom_levels_.erase(it);
WebContentsImpl* web_contents = WebContentsImpl::FromRenderFrameHostImpl(
RenderFrameHostImpl::FromID(rfh_id));
web_contents->UpdateZoom();
}
void HostZoomMapImpl::SendZoomLevelChange(const std::string& scheme,
const std::string& host) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// We'll only send to WebContents not using temporary zoom levels. The one
// other case of interest is where the renderer is hosting a plugin document;
// that should be reflected in our temporary zoom level map, but we will
// double check on the renderer side to avoid the possibility of any races.
for (auto* web_contents : WebContentsImpl::GetAllWebContents()) {
// Only send zoom level changes to WebContents that are using this
// HostZoomMap.
if (GetForWebContents(web_contents) != this)
continue;
if (!UsesTemporaryZoomLevel(
web_contents->GetPrimaryMainFrame()->GetGlobalId())) {
web_contents->UpdateZoomIfNecessary(scheme, host);
}
}
}
void HostZoomMapImpl::SendErrorPageZoomLevelRefresh() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
GURL error_url(kUnreachableWebDataURL);
std::string host = net::GetHostOrSpecFromURL(error_url);
SendZoomLevelChange(std::string(), host);
}
HostZoomMapImpl::~HostZoomMapImpl() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
}
void HostZoomMapImpl::SetClockForTesting(base::Clock* clock) {
clock_ = clock;
}
#if BUILDFLAG(IS_ANDROID)
void HostZoomMapImpl::SetSystemFontScaleForTesting(float scale) {
JNIEnv* env = jni_zero::AttachCurrentThread();
Java_HostZoomMapImpl_setSystemFontScaleForTesting(env, scale); // IN-TEST
}
void HostZoomMapImpl::SetDefaultZoomLevelPrefCallback(
HostZoomMap::DefaultZoomChangedCallback callback) {
default_zoom_level_pref_callback_ = std::move(callback);
}
HostZoomMap::DefaultZoomChangedCallback*
HostZoomMapImpl::GetDefaultZoomLevelPrefCallback() {
return &default_zoom_level_pref_callback_;
}
void JNI_HostZoomMapImpl_SetZoomLevel(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_web_contents,
jdouble new_zoom_level,
jdouble adjusted_zoom_level) {
WebContents* web_contents = WebContents::FromJavaWebContents(j_web_contents);
DCHECK(web_contents);
GlobalRenderFrameHostId rfh_id =
web_contents->GetPrimaryMainFrame()->GetGlobalId();
// We want to set and save the new zoom level, but we want to actually render
// the adjusted level.
HostZoomMap::SetZoomLevel(web_contents, new_zoom_level);
HostZoomMapImpl* host_zoom_map = static_cast<HostZoomMapImpl*>(
HostZoomMap::GetForWebContents(web_contents));
host_zoom_map->SetTemporaryZoomLevel(rfh_id, adjusted_zoom_level);
// We must now remove this webcontents from the list of temporary zoom levels,
// this is so that any future request will continue to update the underlying
// host/scheme save, and will not be perceived as "temporary".
// i.e. once temporary is set for a web_contents, the call to
// SetZoomLevelForWebContents will keep updating what is rendered, but will no
// longer call SetZoomLevelForHost, which saves the choice for that host.
host_zoom_map->SetNoLongerUsesTemporaryZoomLevel(rfh_id);
}
void JNI_HostZoomMapImpl_SetZoomLevelForHost(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_context,
const base::android::JavaParamRef<jstring>& j_host,
jdouble level) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
BrowserContext* context = BrowserContextFromJavaHandle(j_context);
if (!context) {
return;
}
HostZoomMap* host_zoom_map =
HostZoomMap::GetDefaultForBrowserContext(context);
std::string host(base::android::ConvertJavaStringToUTF8(env, j_host));
host_zoom_map->SetZoomLevelForHost(host, level);
}
jdouble JNI_HostZoomMapImpl_GetZoomLevel(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_web_contents) {
WebContents* web_contents = WebContents::FromJavaWebContents(j_web_contents);
DCHECK(web_contents);
return HostZoomMap::GetZoomLevel(web_contents);
}
void JNI_HostZoomMapImpl_SetDefaultZoomLevel(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_context,
jdouble new_default_zoom_level) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
BrowserContext* context = BrowserContextFromJavaHandle(j_context);
if (!context)
return;
HostZoomMapImpl* host_zoom_map = static_cast<HostZoomMapImpl*>(
HostZoomMap::GetDefaultForBrowserContext(context));
// If a callback has been set (e.g. by chrome_zoom_level_prefs to store an
// updated value in Prefs), call this now with the chosen zoom level.
if (host_zoom_map->GetDefaultZoomLevelPrefCallback()) {
host_zoom_map->GetDefaultZoomLevelPrefCallback()->Run(
new_default_zoom_level);
}
// Update the default zoom level for existing tabs. This must be done after
// the Pref is updated due to guard clause in chrome_zoom_level_prefs.
host_zoom_map->SetDefaultZoomLevel(new_default_zoom_level);
}
jdouble JNI_HostZoomMapImpl_GetDefaultZoomLevel(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_context) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
BrowserContext* context = BrowserContextFromJavaHandle(j_context);
if (!context)
return 0.0;
HostZoomMapImpl* host_zoom_map = static_cast<HostZoomMapImpl*>(
HostZoomMap::GetDefaultForBrowserContext(context));
return host_zoom_map->GetDefaultZoomLevel();
}
std::vector<jni_zero::ScopedJavaLocalRef<jobject>>
JNI_HostZoomMapImpl_GetAllHostZoomLevels(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_context) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
std::vector<jni_zero::ScopedJavaLocalRef<jobject>> ret;
// Get instance of HostZoomMap.
BrowserContext* context = BrowserContextFromJavaHandle(j_context);
if (!context) {
return ret;
}
HostZoomMap* host_zoom_map =
HostZoomMap::GetDefaultForBrowserContext(context);
// Convert C++ vector of structs to vector of objects.
for (const auto& entry : host_zoom_map->GetAllZoomLevels()) {
switch (entry.mode) {
case HostZoomMap::ZOOM_CHANGED_FOR_HOST: {
ret.push_back(Java_HostZoomMapImpl_buildSiteZoomInfo(env, entry.host,
entry.zoom_level));
break;
}
case HostZoomMap::ZOOM_CHANGED_FOR_SCHEME_AND_HOST:
NOTREACHED_IN_MIGRATION();
break;
case HostZoomMap::ZOOM_CHANGED_TEMPORARY_ZOOM:
NOTREACHED_IN_MIGRATION();
}
}
return ret;
}
#endif
double HostZoomMapImpl::GetZoomLevelForPreviewAndHost(const std::string& host) {
const auto it = host_zoom_levels_for_preview_.find(host);
return it != host_zoom_levels_for_preview_.end() ? it->second.level
: default_zoom_level_;
}
void HostZoomMapImpl::SetZoomLevelForPreviewAndHost(const std::string& host,
double level) {
if (blink::ZoomValuesEqual(level, default_zoom_level_)) {
host_zoom_levels_for_preview_.erase(host);
} else {
ZoomLevel& zoomLevel = host_zoom_levels_for_preview_[host];
zoomLevel.level = level;
zoomLevel.last_modified = clock_->Now();
}
}
} // namespace content