blob: 677e56965f1985383a36b99a5024d55fdd7f90d8 [file] [log] [blame]
// Copyright 2019 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 "ui/aura/window_tree_host_platform.h"
#include "ui/aura/test/aura_test_base.h"
#include "ui/aura/window_tree_host_observer.h"
#include "ui/platform_window/stub/stub_window.h"
namespace aura {
namespace {
using WindowTreeHostPlatformTest = test::AuraTestBase;
// Trivial WindowTreeHostPlatform implementation that installs a StubWindow as
// the PlatformWindow.
class TestWindowTreeHost : public WindowTreeHostPlatform {
public:
TestWindowTreeHost() {
SetPlatformWindow(std::make_unique<ui::StubWindow>(this));
CreateCompositor();
}
ui::PlatformWindowBase* platform_window() {
return WindowTreeHostPlatform::platform_window();
}
private:
DISALLOW_COPY_AND_ASSIGN(TestWindowTreeHost);
};
// WindowTreeHostObserver that tracks calls to
// OnHostWill/DidProcessBoundsChange. Additionally, this triggers a bounds
// change from within OnHostResized(). Such a scenario happens in production
// code.
class TestWindowTreeHostObserver : public aura::WindowTreeHostObserver {
public:
TestWindowTreeHostObserver(WindowTreeHostPlatform* host,
ui::PlatformWindowBase* platform_window)
: host_(host), platform_window_(platform_window) {
host_->AddObserver(this);
}
~TestWindowTreeHostObserver() override { host_->RemoveObserver(this); }
int on_host_did_process_bounds_change_count() const {
return on_host_did_process_bounds_change_count_;
}
int on_host_will_process_bounds_change_count() const {
return on_host_will_process_bounds_change_count_;
}
// aura::WindowTreeHostObserver:
void OnHostResized(WindowTreeHost* host) override {
if (!should_change_bounds_in_on_resized_)
return;
should_change_bounds_in_on_resized_ = false;
gfx::Rect bounds = platform_window_->GetBounds();
bounds.set_x(bounds.x() + 1);
host_->SetBoundsInPixels(bounds);
}
void OnHostWillProcessBoundsChange(WindowTreeHost* host) override {
++on_host_will_process_bounds_change_count_;
}
void OnHostDidProcessBoundsChange(WindowTreeHost* host) override {
++on_host_did_process_bounds_change_count_;
}
private:
WindowTreeHostPlatform* host_;
ui::PlatformWindowBase* platform_window_;
bool should_change_bounds_in_on_resized_ = true;
int on_host_will_process_bounds_change_count_ = 0;
int on_host_did_process_bounds_change_count_ = 0;
DISALLOW_COPY_AND_ASSIGN(TestWindowTreeHostObserver);
};
// Regression test for https://crbug.com/958449
TEST_F(WindowTreeHostPlatformTest, HostWillProcessBoundsChangeRecursion) {
TestWindowTreeHost host;
TestWindowTreeHostObserver observer(&host, host.platform_window());
// This call triggers a recursive bounds change. That is, this results in
// WindowTreePlatform::OnBoundsChanged() indirectly calling back into
// WindowTreePlatform::OnBoundsChanged(). In such a scenario the observer
// should be notified only once (see comment in
// WindowTreeHostPlatform::OnBoundsChanged() for details).
host.SetBoundsInPixels(gfx::Rect(1, 2, 3, 4));
EXPECT_EQ(1, observer.on_host_did_process_bounds_change_count());
EXPECT_EQ(1, observer.on_host_will_process_bounds_change_count());
}
} // namespace
} // namespace aura