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// Copyright (c) 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 "testing/gtest/include/gtest/gtest.h"
#include "ui/events/event.h"
#include "ui/events/event_targeter.h"
#include "ui/events/test/test_event_processor.h"
#include "ui/events/test/test_event_target.h"
namespace ui {
namespace test {
class EventProcessorTest : public testing::Test {
public:
EventProcessorTest() {}
virtual ~EventProcessorTest() {}
// testing::Test:
virtual void SetUp() OVERRIDE {
processor_.SetRoot(scoped_ptr<EventTarget>(new TestEventTarget()));
root()->SetEventTargeter(make_scoped_ptr(new EventTargeter()));
}
TestEventTarget* root() {
return static_cast<TestEventTarget*>(processor_.GetRootTarget());
}
void DispatchEvent(Event* event) {
processor_.OnEventFromSource(event);
}
protected:
TestEventProcessor processor_;
DISALLOW_COPY_AND_ASSIGN(EventProcessorTest);
};
TEST_F(EventProcessorTest, Basic) {
scoped_ptr<TestEventTarget> child(new TestEventTarget());
root()->AddChild(child.Pass());
MouseEvent mouse(ET_MOUSE_MOVED, gfx::Point(10, 10), gfx::Point(10, 10),
EF_NONE);
DispatchEvent(&mouse);
EXPECT_TRUE(root()->child_at(0)->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_FALSE(root()->DidReceiveEvent(ET_MOUSE_MOVED));
root()->RemoveChild(root()->child_at(0));
DispatchEvent(&mouse);
EXPECT_TRUE(root()->DidReceiveEvent(ET_MOUSE_MOVED));
}
template<typename T>
class BoundsEventTargeter : public EventTargeter {
public:
virtual ~BoundsEventTargeter() {}
protected:
virtual bool SubtreeShouldBeExploredForEvent(
EventTarget* target, const LocatedEvent& event) OVERRIDE {
T* t = static_cast<T*>(target);
return (t->bounds().Contains(event.location()));
}
};
class BoundsTestTarget : public TestEventTarget {
public:
BoundsTestTarget() {}
virtual ~BoundsTestTarget() {}
void set_bounds(gfx::Rect rect) { bounds_ = rect; }
gfx::Rect bounds() const { return bounds_; }
static void ConvertPointToTarget(BoundsTestTarget* source,
BoundsTestTarget* target,
gfx::Point* location) {
gfx::Vector2d vector;
if (source->Contains(target)) {
for (; target && target != source;
target = static_cast<BoundsTestTarget*>(target->parent())) {
vector += target->bounds().OffsetFromOrigin();
}
*location -= vector;
} else if (target->Contains(source)) {
for (; source && source != target;
source = static_cast<BoundsTestTarget*>(source->parent())) {
vector += source->bounds().OffsetFromOrigin();
}
*location += vector;
} else {
NOTREACHED();
}
}
private:
// EventTarget:
virtual void ConvertEventToTarget(EventTarget* target,
LocatedEvent* event) OVERRIDE {
event->ConvertLocationToTarget(this,
static_cast<BoundsTestTarget*>(target));
}
gfx::Rect bounds_;
DISALLOW_COPY_AND_ASSIGN(BoundsTestTarget);
};
TEST_F(EventProcessorTest, Bounds) {
scoped_ptr<BoundsTestTarget> parent(new BoundsTestTarget());
scoped_ptr<BoundsTestTarget> child(new BoundsTestTarget());
scoped_ptr<BoundsTestTarget> grandchild(new BoundsTestTarget());
parent->set_bounds(gfx::Rect(0, 0, 30, 30));
child->set_bounds(gfx::Rect(5, 5, 20, 20));
grandchild->set_bounds(gfx::Rect(5, 5, 5, 5));
child->AddChild(scoped_ptr<TestEventTarget>(grandchild.Pass()));
parent->AddChild(scoped_ptr<TestEventTarget>(child.Pass()));
root()->AddChild(scoped_ptr<TestEventTarget>(parent.Pass()));
ASSERT_EQ(1u, root()->child_count());
ASSERT_EQ(1u, root()->child_at(0)->child_count());
ASSERT_EQ(1u, root()->child_at(0)->child_at(0)->child_count());
TestEventTarget* parent_r = root()->child_at(0);
TestEventTarget* child_r = parent_r->child_at(0);
TestEventTarget* grandchild_r = child_r->child_at(0);
// Dispatch a mouse event that falls on the parent, but not on the child. When
// the default event-targeter used, the event will still reach |grandchild|,
// because the default targeter does not look at the bounds.
MouseEvent mouse(ET_MOUSE_MOVED, gfx::Point(1, 1), gfx::Point(1, 1), EF_NONE);
DispatchEvent(&mouse);
EXPECT_FALSE(root()->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_FALSE(parent_r->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_FALSE(child_r->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_TRUE(grandchild_r->DidReceiveEvent(ET_MOUSE_MOVED));
grandchild_r->ResetReceivedEvents();
// Now install a targeter on the parent that looks at the bounds and makes
// sure the event reaches the target only if the location of the event within
// the bounds of the target.
parent_r->SetEventTargeter(scoped_ptr<EventTargeter>(
new BoundsEventTargeter<BoundsTestTarget>()));
DispatchEvent(&mouse);
EXPECT_FALSE(root()->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_TRUE(parent_r->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_FALSE(child_r->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_FALSE(grandchild_r->DidReceiveEvent(ET_MOUSE_MOVED));
parent_r->ResetReceivedEvents();
MouseEvent second(ET_MOUSE_MOVED, gfx::Point(12, 12), gfx::Point(12, 12),
EF_NONE);
DispatchEvent(&second);
EXPECT_FALSE(root()->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_FALSE(parent_r->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_FALSE(child_r->DidReceiveEvent(ET_MOUSE_MOVED));
EXPECT_TRUE(grandchild_r->DidReceiveEvent(ET_MOUSE_MOVED));
}
} // namespace test
} // namespace ui
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