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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 "chrome/browser/ui/ash/accessibility/automation_manager_ash.h"
#include <vector>
#include "base/memory/singleton.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/extensions/api/automation_internal/automation_util.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "content/public/browser/ax_event_notification_details.h"
#include "content/public/browser/browser_context.h"
#include "ui/aura/window.h"
#include "ui/views/accessibility/ax_aura_obj_cache.h"
#include "ui/views/accessibility/ax_aura_obj_wrapper.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
using content::BrowserContext;
// static
AutomationManagerAsh* AutomationManagerAsh::GetInstance() {
return Singleton<AutomationManagerAsh>::get();
}
void AutomationManagerAsh::Enable(BrowserContext* context) {
enabled_ = true;
if (!current_tree_.get())
current_tree_.reset(new AXTreeSourceAsh());
ResetSerializer();
SendEvent(context, current_tree_->GetRoot(), ui::AX_EVENT_LOAD_COMPLETE);
}
void AutomationManagerAsh::Disable() {
enabled_ = false;
// Reset the serializer to save memory.
current_tree_serializer_->Reset();
}
void AutomationManagerAsh::HandleEvent(BrowserContext* context,
views::View* view,
ui::AXEvent event_type) {
if (!enabled_)
return;
if (!context && g_browser_process->profile_manager())
context = g_browser_process->profile_manager()->GetLastUsedProfile();
if (!context) {
LOG(WARNING) << "Accessibility notification but no browser context";
return;
}
views::AXAuraObjWrapper* aura_obj =
views::AXAuraObjCache::GetInstance()->GetOrCreate(view);
SendEvent(context, aura_obj, event_type);
}
void AutomationManagerAsh::HandleAlert(content::BrowserContext* context,
const std::string& text) {
if (!enabled_)
return;
views::AXAuraObjWrapper* obj =
static_cast<AXRootObjWrapper*>(current_tree_->GetRoot())
->GetAlertForText(text);
SendEvent(context, obj, ui::AX_EVENT_ALERT);
}
void AutomationManagerAsh::DoDefault(int32 id) {
CHECK(enabled_);
current_tree_->DoDefault(id);
}
void AutomationManagerAsh::Focus(int32 id) {
CHECK(enabled_);
current_tree_->Focus(id);
}
void AutomationManagerAsh::MakeVisible(int32 id) {
CHECK(enabled_);
current_tree_->MakeVisible(id);
}
void AutomationManagerAsh::SetSelection(int32 id, int32 start, int32 end) {
CHECK(enabled_);
current_tree_->SetSelection(id, start, end);
}
AutomationManagerAsh::AutomationManagerAsh() : enabled_(false) {
}
AutomationManagerAsh::~AutomationManagerAsh() {}
void AutomationManagerAsh::ResetSerializer() {
current_tree_serializer_.reset(
new ui::AXTreeSerializer<views::AXAuraObjWrapper*>(
current_tree_.get()));
}
void AutomationManagerAsh::SendEvent(BrowserContext* context,
views::AXAuraObjWrapper* aura_obj,
ui::AXEvent event_type) {
ui::AXTreeUpdate update;
current_tree_serializer_->SerializeChanges(aura_obj, &update);
// Route this event to special process/routing ids recognized by the
// Automation API as the desktop tree.
// TODO(dtseng): Would idealy define these special desktop constants in idl.
content::AXEventNotificationDetails detail(update.node_id_to_clear,
update.nodes,
event_type,
aura_obj->GetID(),
0, /* process_id */
0 /* routing_id */);
std::vector<content::AXEventNotificationDetails> details;
details.push_back(detail);
extensions::automation_util::DispatchAccessibilityEventsToAutomation(
details, context, gfx::Vector2d());
}
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