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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <optional>
#include <tuple>
#include "base/strings/string_number_conversions.h"
#include "content/browser/renderer_host/render_widget_host_view_child_frame.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/test/accessibility_notification_waiter.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/public/test/hit_test_region_observer.h"
#include "content/public/test/scoped_accessibility_mode_override.h"
#include "content/shell/browser/shell.h"
#include "content/test/content_browser_test_utils_internal.h"
#include "net/dns/mock_host_resolver.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/accessibility/platform/browser_accessibility.h"
#include "ui/aura/window.h"
#include "ui/aura/window_tree_host.h"
#include "ui/events/event.h"
#include "ui/events/event_sink.h"
#include "ui/events/event_utils.h"
namespace content {
class TouchAccessibilityBrowserTest : public ContentBrowserTest {
public:
TouchAccessibilityBrowserTest() {}
TouchAccessibilityBrowserTest(const TouchAccessibilityBrowserTest&) = delete;
TouchAccessibilityBrowserTest& operator=(
const TouchAccessibilityBrowserTest&) = delete;
protected:
void SetUpOnMainThread() override {
host_resolver()->AddRule("*", "127.0.0.1");
SetupCrossSiteRedirector(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
accessibility_mode_.emplace(ui::kAXModeComplete);
}
void TearDownOnMainThread() override { accessibility_mode_.reset(); }
void NavigateToUrlAndWaitForAccessibilityTree(const GURL& url) {
AccessibilityNotificationWaiter waiter(shell()->web_contents(),
ax::mojom::Event::kLoadComplete);
EXPECT_TRUE(NavigateToURL(shell(), url));
// TODO(crbug.com/40844856): Investigate why this does not return
// true.
ASSERT_TRUE(waiter.WaitForNotification());
}
void SendTouchExplorationEvent(int x, int y) {
aura::Window* window = shell()->web_contents()->GetContentNativeView();
ui::EventSink* sink = window->GetHost()->GetEventSink();
gfx::Rect bounds = window->GetBoundsInRootWindow();
gfx::Point location(bounds.x() + x, bounds.y() + y);
int flags = ui::EF_TOUCH_ACCESSIBILITY;
std::unique_ptr<ui::Event> mouse_move_event(
new ui::MouseEvent(ui::EventType::kMouseMoved, location, location,
ui::EventTimeForNow(), flags, 0));
std::ignore = sink->OnEventFromSource(mouse_move_event.get());
}
private:
std::optional<ScopedAccessibilityModeOverride> accessibility_mode_;
};
IN_PROC_BROWSER_TEST_F(TouchAccessibilityBrowserTest,
TouchExplorationSendsHoverEvents) {
// Create HTML with a 7 x 5 table, each exactly 50 x 50 pixels.
std::string html_url =
"data:text/html,"
"<style>"
" body { margin: 0; }"
" table { border-spacing: 0; border-collapse: collapse; }"
" td { width: 50px; height: 50px; padding: 0; }"
"</style>"
"<body>"
"<table>";
int cell = 0;
for (int row = 0; row < 5; ++row) {
html_url += "<tr>";
for (int col = 0; col < 7; ++col) {
html_url += "<td>" + base::NumberToString(cell) + "</td>";
++cell;
}
html_url += "</tr>";
}
html_url += "</table></body>";
NavigateToUrlAndWaitForAccessibilityTree(GURL(html_url));
// Get the BrowserAccessibilityManager.
WebContentsImpl* web_contents =
static_cast<WebContentsImpl*>(shell()->web_contents());
ui::BrowserAccessibilityManager* manager =
web_contents->GetRootBrowserAccessibilityManager();
ASSERT_NE(nullptr, manager);
// Loop over all of the cells in the table. For each one, send a simulated
// touch exploration event in the center of that cell, and assert that we
// get an accessibility hover event fired in the correct cell.
AccessibilityNotificationWaiter waiter(shell()->web_contents(),
ax::mojom::Event::kHover);
for (int row = 0; row < 5; ++row) {
for (int col = 0; col < 7; ++col) {
std::string expected_cell_text = base::NumberToString(row * 7 + col);
VLOG(1) << "Sending event in row " << row << " col " << col
<< " with text " << expected_cell_text;
SendTouchExplorationEvent(50 * col + 25, 50 * row + 25);
// Wait until we get a hover event in the expected grid cell.
// Tolerate additional events, keep looping until we get the expected one.
std::string cell_text;
do {
ASSERT_TRUE(waiter.WaitForNotification());
int target_id = waiter.event_target_id();
ui::BrowserAccessibility* hit = manager->GetFromID(target_id);
ui::BrowserAccessibility* child = hit->PlatformGetChild(0);
ASSERT_NE(nullptr, child);
cell_text =
child->GetStringAttribute(ax::mojom::StringAttribute::kName);
VLOG(1) << "Got hover event in cell with text: " << cell_text;
} while (cell_text != expected_cell_text);
}
}
}
IN_PROC_BROWSER_TEST_F(TouchAccessibilityBrowserTest,
TouchExplorationInIframe) {
NavigateToUrlAndWaitForAccessibilityTree(embedded_test_server()->GetURL(
"/accessibility/html/iframe-coordinates.html"));
WaitForAccessibilityTreeToContainNodeWithName(shell()->web_contents(),
"Ordinary Button");
// Get the BrowserAccessibilityManager for the first child frame.
RenderFrameHostImpl* main_frame = static_cast<RenderFrameHostImpl*>(
shell()->web_contents()->GetPrimaryMainFrame());
RenderFrameHostImpl* child_frame =
main_frame->frame_tree_node()->child_at(0)->current_frame_host();
ui::BrowserAccessibilityManager* child_manager =
child_frame->GetOrCreateBrowserAccessibilityManager();
ASSERT_NE(nullptr, child_manager);
// Send a touch exploration event to the button in the first iframe.
// A touch exploration event is just a mouse move event with
// the ui::EF_TOUCH_ACCESSIBILITY flag set.
AccessibilityNotificationWaiter waiter(shell()->web_contents(),
ax::mojom::Event::kHover);
SendTouchExplorationEvent(50, 350);
ASSERT_TRUE(waiter.WaitForNotification());
int target_id = waiter.event_target_id();
ui::BrowserAccessibility* hit = child_manager->GetFromID(target_id);
EXPECT_EQ(ax::mojom::Role::kButton, hit->GetRole());
std::string text = hit->GetStringAttribute(ax::mojom::StringAttribute::kName);
EXPECT_EQ("Ordinary Button", text);
}
IN_PROC_BROWSER_TEST_F(TouchAccessibilityBrowserTest,
TouchExplorationInCrossSiteIframe) {
NavigateToUrlAndWaitForAccessibilityTree(embedded_test_server()->GetURL(
"/accessibility/html/iframe-coordinates-cross-process.html"));
WaitForAccessibilityTreeToContainNodeWithName(shell()->web_contents(),
"Ordinary Button");
// Get the BrowserAccessibilityManager for the first child frame.
RenderFrameHostImpl* main_frame = static_cast<RenderFrameHostImpl*>(
shell()->web_contents()->GetPrimaryMainFrame());
RenderFrameHostImpl* child_frame =
main_frame->frame_tree_node()->child_at(0)->current_frame_host();
ui::BrowserAccessibilityManager* child_manager =
child_frame->GetOrCreateBrowserAccessibilityManager();
ASSERT_NE(nullptr, child_manager);
// If OOPIFs are enabled, wait until hit testing data is ready, otherwise the
// touch event will not get sent to the correct renderer process. However the
// |child_frame| being used here is not actually a
// RenderWidgetHostViewChildFrame.
WaitForHitTestData(child_frame);
// Send a touch exploration event to the button in the first iframe.
// A touch exploration event is just a mouse move event with
// the ui::EF_TOUCH_ACCESSIBILITY flag set.
AccessibilityNotificationWaiter waiter(shell()->web_contents(),
ax::mojom::Event::kHover);
SendTouchExplorationEvent(50, 350);
ASSERT_TRUE(waiter.WaitForNotification());
int target_id = waiter.event_target_id();
ui::BrowserAccessibility* hit = child_manager->GetFromID(target_id);
EXPECT_EQ(ax::mojom::Role::kButton, hit->GetRole());
std::string text = hit->GetStringAttribute(ax::mojom::StringAttribute::kName);
EXPECT_EQ("Ordinary Button", text);
}
} // namespace content
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