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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.
#include <set>
#include <string>
#include <vector>
#include "base/command_line.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/strings/string16.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "content/browser/accessibility/accessibility_tree_formatter.h"
#include "content/browser/accessibility/browser_accessibility.h"
#include "content/browser/accessibility/browser_accessibility_manager.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/content_paths.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/url_constants.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/shell/browser/shell.h"
#include "content/test/accessibility_browser_test_utils.h"
#include "net/dns/mock_host_resolver.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
namespace {
bool AXTreeContainsNodeWithName(BrowserAccessibility* node,
const std::string& name) {
if (node->GetStringAttribute(ui::AX_ATTR_NAME) == name)
return true;
for (unsigned i = 0; i < node->PlatformChildCount(); i++) {
if (AXTreeContainsNodeWithName(node->PlatformGetChild(i), name))
return true;
}
return false;
}
} // namespace
class AccessibilityHitTestingBrowserTest : public ContentBrowserTest {
public:
AccessibilityHitTestingBrowserTest() {}
~AccessibilityHitTestingBrowserTest() override {}
protected:
BrowserAccessibility* HitTestAndWaitForResult(const gfx::Point& point) {
WebContentsImpl* web_contents =
static_cast<WebContentsImpl*>(shell()->web_contents());
FrameTree* frame_tree = web_contents->GetFrameTree();
BrowserAccessibilityManager* manager =
web_contents->GetRootBrowserAccessibilityManager();
AccessibilityNotificationWaiter hover_waiter(
shell(), AccessibilityModeComplete, ui::AX_EVENT_HOVER);
for (FrameTreeNode* node : frame_tree->Nodes())
hover_waiter.ListenToAdditionalFrame(node->current_frame_host());
manager->delegate()->AccessibilityHitTest(point);
hover_waiter.WaitForNotification();
RenderFrameHostImpl* target_frame = hover_waiter.event_render_frame_host();
BrowserAccessibilityManager* target_manager =
target_frame->browser_accessibility_manager();
int hover_target_id = hover_waiter.event_target_id();
BrowserAccessibility* hovered_node =
target_manager->GetFromID(hover_target_id);
return hovered_node;
}
};
IN_PROC_BROWSER_TEST_F(AccessibilityHitTestingBrowserTest,
HitTestOutsideDocumentBoundsReturnsRoot) {
NavigateToURL(shell(), GURL(url::kAboutBlankURL));
// Load the page.
AccessibilityNotificationWaiter waiter(shell(), AccessibilityModeComplete,
ui::AX_EVENT_LOAD_COMPLETE);
const char url_str[] =
"data:text/html,"
"<!doctype html>"
"<html><head><title>Accessibility Test</title></head>"
"<body>"
"<a href='#'>"
"This is some text in a link"
"</a>"
"</body></html>";
GURL url(url_str);
NavigateToURL(shell(), url);
waiter.WaitForNotification();
BrowserAccessibility* hovered_node =
HitTestAndWaitForResult(gfx::Point(-1, -1));
ASSERT_TRUE(hovered_node != NULL);
ASSERT_EQ(ui::AX_ROLE_ROOT_WEB_AREA, hovered_node->GetRole());
}
IN_PROC_BROWSER_TEST_F(AccessibilityHitTestingBrowserTest,
HitTestingInIframes) {
host_resolver()->AddRule("*", "127.0.0.1");
ASSERT_TRUE(embedded_test_server()->Start());
NavigateToURL(shell(), GURL(url::kAboutBlankURL));
AccessibilityNotificationWaiter waiter(shell(), AccessibilityModeComplete,
ui::AX_EVENT_LOAD_COMPLETE);
GURL url(embedded_test_server()->GetURL(
"/accessibility/html/iframe-coordinates.html"));
NavigateToURL(shell(), url);
waiter.WaitForNotification();
WebContentsImpl* web_contents =
static_cast<WebContentsImpl*>(shell()->web_contents());
FrameTree* frame_tree = web_contents->GetFrameTree();
BrowserAccessibilityManager* manager =
web_contents->GetRootBrowserAccessibilityManager();
BrowserAccessibility* root = manager->GetRoot();
while (!AXTreeContainsNodeWithName(root, "Ordinary Button") ||
!AXTreeContainsNodeWithName(root, "Scrolled Button")) {
AccessibilityNotificationWaiter waiter(shell(), AccessibilityModeComplete,
ui::AX_EVENT_NONE);
for (FrameTreeNode* node : frame_tree->Nodes())
waiter.ListenToAdditionalFrame(node->current_frame_host());
waiter.WaitForNotification();
}
// Send a series of hit test requests, and for each one
// wait for the hover event in response, verifying we hit the
// correct object.
// (50, 50) -> "Button"
BrowserAccessibility* hovered_node;
hovered_node = HitTestAndWaitForResult(gfx::Point(50, 50));
ASSERT_TRUE(hovered_node != NULL);
ASSERT_EQ(ui::AX_ROLE_BUTTON, hovered_node->GetRole());
ASSERT_EQ("Button", hovered_node->GetStringAttribute(ui::AX_ATTR_NAME));
// (50, 305) -> div in first iframe
hovered_node = HitTestAndWaitForResult(gfx::Point(50, 305));
ASSERT_TRUE(hovered_node != NULL);
ASSERT_EQ(ui::AX_ROLE_DIV, hovered_node->GetRole());
// (50, 350) -> "Ordinary Button"
hovered_node = HitTestAndWaitForResult(gfx::Point(50, 350));
ASSERT_TRUE(hovered_node != NULL);
ASSERT_EQ(ui::AX_ROLE_BUTTON, hovered_node->GetRole());
ASSERT_EQ("Ordinary Button",
hovered_node->GetStringAttribute(ui::AX_ATTR_NAME));
// (50, 455) -> "Scrolled Button"
hovered_node = HitTestAndWaitForResult(gfx::Point(50, 455));
ASSERT_TRUE(hovered_node != NULL);
ASSERT_EQ(ui::AX_ROLE_BUTTON, hovered_node->GetRole());
ASSERT_EQ("Scrolled Button",
hovered_node->GetStringAttribute(ui::AX_ATTR_NAME));
// (50, 505) -> div in second iframe
hovered_node = HitTestAndWaitForResult(gfx::Point(50, 505));
ASSERT_TRUE(hovered_node != NULL);
ASSERT_EQ(ui::AX_ROLE_DIV, hovered_node->GetRole());
}
} // namespace content
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