| // Copyright (c) 2012 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. |
| |
| #import "content/browser/renderer_host/text_input_client_mac.h" |
| |
| #include "base/memory/singleton.h" |
| #include "base/metrics/histogram.h" |
| #include "base/threading/thread_restrictions.h" |
| #include "base/time/time.h" |
| #include "content/browser/renderer_host/render_widget_host_impl.h" |
| #include "content/common/text_input_client_messages.h" |
| |
| namespace content { |
| |
| // The amount of time in milliseconds that the browser process will wait for a |
| // response from the renderer. |
| // TODO(rsesek): Using the histogram data, find the best upper-bound for this |
| // value. |
| const float kWaitTimeout = 1500; |
| |
| TextInputClientMac::TextInputClientMac() |
| : character_index_(NSNotFound), |
| lock_(), |
| condition_(&lock_) { |
| } |
| |
| TextInputClientMac::~TextInputClientMac() { |
| } |
| |
| // static |
| TextInputClientMac* TextInputClientMac::GetInstance() { |
| return Singleton<TextInputClientMac>::get(); |
| } |
| |
| NSUInteger TextInputClientMac::GetCharacterIndexAtPoint(RenderWidgetHost* rwh, |
| gfx::Point point) { |
| base::TimeTicks start = base::TimeTicks::Now(); |
| |
| BeforeRequest(); |
| RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(rwh); |
| rwhi->Send(new TextInputClientMsg_CharacterIndexForPoint(rwhi->GetRoutingID(), |
| point)); |
| // http://crbug.com/121917 |
| base::ThreadRestrictions::ScopedAllowWait allow_wait; |
| condition_.TimedWait(base::TimeDelta::FromMilliseconds(kWaitTimeout)); |
| AfterRequest(); |
| |
| base::TimeDelta delta(base::TimeTicks::Now() - start); |
| UMA_HISTOGRAM_LONG_TIMES("TextInputClient.CharacterIndex", |
| delta * base::Time::kMicrosecondsPerMillisecond); |
| |
| return character_index_; |
| } |
| |
| NSRect TextInputClientMac::GetFirstRectForRange(RenderWidgetHost* rwh, |
| NSRange range) { |
| base::TimeTicks start = base::TimeTicks::Now(); |
| |
| BeforeRequest(); |
| RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(rwh); |
| rwhi->Send( |
| new TextInputClientMsg_FirstRectForCharacterRange(rwhi->GetRoutingID(), |
| gfx::Range(range))); |
| // http://crbug.com/121917 |
| base::ThreadRestrictions::ScopedAllowWait allow_wait; |
| condition_.TimedWait(base::TimeDelta::FromMilliseconds(kWaitTimeout)); |
| AfterRequest(); |
| |
| base::TimeDelta delta(base::TimeTicks::Now() - start); |
| UMA_HISTOGRAM_LONG_TIMES("TextInputClient.FirstRect", |
| delta * base::Time::kMicrosecondsPerMillisecond); |
| |
| return first_rect_; |
| } |
| |
| NSAttributedString* TextInputClientMac::GetAttributedSubstringFromRange( |
| RenderWidgetHost* rwh, |
| NSRange range) { |
| base::TimeTicks start = base::TimeTicks::Now(); |
| |
| BeforeRequest(); |
| RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(rwh); |
| rwhi->Send(new TextInputClientMsg_StringForRange(rwhi->GetRoutingID(), |
| gfx::Range(range))); |
| // http://crbug.com/121917 |
| base::ThreadRestrictions::ScopedAllowWait allow_wait; |
| condition_.TimedWait(base::TimeDelta::FromMilliseconds(kWaitTimeout)); |
| AfterRequest(); |
| |
| base::TimeDelta delta(base::TimeTicks::Now() - start); |
| UMA_HISTOGRAM_LONG_TIMES("TextInputClient.Substring", |
| delta * base::Time::kMicrosecondsPerMillisecond); |
| |
| // Lookup.framework calls this method repeatedly and expects that repeated |
| // calls don't deallocate previous results immediately. Returning an |
| // autoreleased string is better convention anyway. |
| return [[substring_.get() retain] autorelease]; |
| } |
| |
| void TextInputClientMac::SetCharacterIndexAndSignal(NSUInteger index) { |
| lock_.Acquire(); |
| character_index_ = index; |
| lock_.Release(); |
| condition_.Signal(); |
| } |
| |
| void TextInputClientMac::SetFirstRectAndSignal(NSRect first_rect) { |
| lock_.Acquire(); |
| first_rect_ = first_rect; |
| lock_.Release(); |
| condition_.Signal(); |
| } |
| |
| void TextInputClientMac::SetSubstringAndSignal(NSAttributedString* string) { |
| lock_.Acquire(); |
| substring_.reset([string copy]); |
| lock_.Release(); |
| condition_.Signal(); |
| } |
| |
| void TextInputClientMac::BeforeRequest() { |
| base::TimeTicks start = base::TimeTicks::Now(); |
| |
| lock_.Acquire(); |
| |
| base::TimeDelta delta(base::TimeTicks::Now() - start); |
| UMA_HISTOGRAM_LONG_TIMES("TextInputClient.LockWait", |
| delta * base::Time::kMicrosecondsPerMillisecond); |
| |
| character_index_ = NSNotFound; |
| first_rect_ = NSZeroRect; |
| substring_.reset(); |
| } |
| |
| void TextInputClientMac::AfterRequest() { |
| lock_.Release(); |
| } |
| |
| } // namespace content |