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// 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.
#import "ui/views/cocoa/cocoa_mouse_capture.h"
#import <Cocoa/Cocoa.h>
#import "base/mac/scoped_nsobject.h"
#import "ui/events/test/cocoa_test_event_utils.h"
#import "ui/gfx/test/ui_cocoa_test_helper.h"
#import "ui/views/cocoa/cocoa_mouse_capture_delegate.h"
// Simple test view that counts calls to -[NSView mouseDown:].
@interface CocoaMouseCaptureTestView : NSView {
@private
int mouseDownCount_;
}
@property(readonly, nonatomic) int mouseDownCount;
@end
@implementation CocoaMouseCaptureTestView
@synthesize mouseDownCount = mouseDownCount_;
- (void)mouseDown:(NSEvent*)theEvent {
++mouseDownCount_;
}
@end
namespace views {
namespace {
// Simple capture delegate that just counts events forwarded.
class TestCaptureDelegate : public CocoaMouseCaptureDelegate {
public:
TestCaptureDelegate() : event_count_(0), capture_lost_count_(0) {}
void Acquire() { mouse_capture_.reset(new CocoaMouseCapture(this)); }
bool IsActive() { return mouse_capture_ && mouse_capture_->IsActive(); }
void SimulateDestroy() { mouse_capture_.reset(); }
int event_count() { return event_count_; }
int capture_lost_count() { return capture_lost_count_; }
// CocoaMouseCaptureDelegate:
void PostCapturedEvent(NSEvent* event) override { ++event_count_; }
void OnMouseCaptureLost() override { ++capture_lost_count_; }
private:
scoped_ptr<CocoaMouseCapture> mouse_capture_;
int event_count_;
int capture_lost_count_;
DISALLOW_COPY_AND_ASSIGN(TestCaptureDelegate);
};
} // namespace
typedef ui::CocoaTest CocoaMouseCaptureTest;
// Test that a new capture properly "steals" capture from an existing one.
TEST_F(CocoaMouseCaptureTest, OnCaptureLost) {
TestCaptureDelegate capture;
capture.Acquire();
EXPECT_TRUE(capture.IsActive());
{
TestCaptureDelegate capture2;
EXPECT_EQ(0, capture.capture_lost_count());
// A second capture steals from the first.
capture2.Acquire();
EXPECT_TRUE(capture2.IsActive());
EXPECT_FALSE(capture.IsActive());
EXPECT_EQ(1, capture.capture_lost_count());
EXPECT_EQ(0, capture2.capture_lost_count());
// Simulate capture2 going out of scope. Inspect it.
capture2.SimulateDestroy();
EXPECT_FALSE(capture2.IsActive());
EXPECT_EQ(1, capture2.capture_lost_count());
}
// Re-acquiring is fine (not stealing).
EXPECT_FALSE(capture.IsActive());
capture.Acquire();
EXPECT_TRUE(capture.IsActive());
// Having no CocoaMouseCapture instance is fine.
capture.SimulateDestroy();
EXPECT_FALSE(capture.IsActive());
// Receives OnMouseCaptureLost again, since reacquired.
EXPECT_EQ(2, capture.capture_lost_count());
}
// Test event capture.
TEST_F(CocoaMouseCaptureTest, CaptureEvents) {
base::scoped_nsobject<CocoaMouseCaptureTestView> view(
[[CocoaMouseCaptureTestView alloc] initWithFrame:NSZeroRect]);
[test_window() setContentView:view];
std::pair<NSEvent*, NSEvent*> click =
cocoa_test_event_utils::MouseClickInView(view, 1);
// First check that the view receives events normally.
EXPECT_EQ(0, [view mouseDownCount]);
[NSApp sendEvent:click.first];
EXPECT_EQ(1, [view mouseDownCount]);
{
TestCaptureDelegate capture;
capture.Acquire();
// Now check that the capture captures events.
EXPECT_EQ(0, capture.event_count());
[NSApp sendEvent:click.first];
EXPECT_EQ(1, [view mouseDownCount]);
EXPECT_EQ(1, capture.event_count());
}
// After the capture goes away, events should be received again.
[NSApp sendEvent:click.first];
EXPECT_EQ(2, [view mouseDownCount]);
}
} // namespace views
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