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// Copyright 2015 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 "ash/shelf/shelf_layout_manager.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "base/macros.h"
#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
#include "chrome/browser/chromeos/accessibility/chromevox_panel.h"
#include "chrome/common/extensions/extension_constants.h"
#include "content/public/browser/web_contents.h"
#include "ui/chromeos/accessibility_types.h"
#include "ui/views/controls/webview/webview.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/widget/widget.h"
#include "ui/wm/core/shadow_types.h"
#include "ui/wm/core/window_animations.h"
namespace {
const int kPanelHeight = 35;
const char kChromeVoxPanelRelativeUrl[] = "/cvox2/background/panel.html";
const char kFullscreenURLFragment[] = "fullscreen";
const char kDisableSpokenFeedbackURLFragment[] = "close";
} // namespace
class ChromeVoxPanelWebContentsObserver : public content::WebContentsObserver {
public:
ChromeVoxPanelWebContentsObserver(content::WebContents* web_contents,
ChromeVoxPanel* panel)
: content::WebContentsObserver(web_contents), panel_(panel) {}
~ChromeVoxPanelWebContentsObserver() override {}
// content::WebContentsObserver overrides.
void DidFirstVisuallyNonEmptyPaint() override {
panel_->DidFirstVisuallyNonEmptyPaint();
}
void DidFinishNavigation(
content::NavigationHandle* navigation_handle) override {
// The ChromeVox panel uses the URL fragment to communicate state
// to this panel host.
std::string fragment = web_contents()->GetLastCommittedURL().ref();
if (fragment == kDisableSpokenFeedbackURLFragment)
panel_->DisableSpokenFeedback();
else if (fragment == kFullscreenURLFragment)
panel_->EnterFullscreen();
else
panel_->ExitFullscreen();
}
private:
ChromeVoxPanel* panel_;
DISALLOW_COPY_AND_ASSIGN(ChromeVoxPanelWebContentsObserver);
};
ChromeVoxPanel::ChromeVoxPanel(content::BrowserContext* browser_context)
: widget_(nullptr), web_view_(nullptr), fullscreen_(false) {
std::string url("chrome-extension://");
url += extension_misc::kChromeVoxExtensionId;
url += kChromeVoxPanelRelativeUrl;
views::WebView* web_view = new views::WebView(browser_context);
web_contents_observer_.reset(
new ChromeVoxPanelWebContentsObserver(web_view->GetWebContents(), this));
web_view->LoadInitialURL(GURL(url));
web_view_ = web_view;
widget_ = new views::Widget();
views::Widget::InitParams params(
views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
aura::Window* root_window = ash::Shell::GetPrimaryRootWindow();
params.parent = ash::Shell::GetContainer(
root_window, ash::kShellWindowId_SettingBubbleContainer);
params.delegate = this;
params.activatable = views::Widget::InitParams::ACTIVATABLE_NO;
params.bounds = gfx::Rect(0, 0, root_window->bounds().width(),
root_window->bounds().height());
widget_->Init(params);
SetShadowType(widget_->GetNativeWindow(), wm::SHADOW_TYPE_RECTANGULAR);
ash::Shell::GetScreen()->AddObserver(this);
}
ChromeVoxPanel::~ChromeVoxPanel() {
ash::Shell::GetScreen()->RemoveObserver(this);
}
aura::Window* ChromeVoxPanel::GetRootWindow() {
return GetWidget()->GetNativeWindow()->GetRootWindow();
}
void ChromeVoxPanel::Close() {
widget_->Close();
}
void ChromeVoxPanel::DidFirstVisuallyNonEmptyPaint() {
widget_->Show();
ash::ShelfLayoutManager::ForShelf(GetRootWindow())
->SetChromeVoxPanelHeight(kPanelHeight);
}
void ChromeVoxPanel::EnterFullscreen() {
fullscreen_ = true;
UpdateWidgetBounds();
}
void ChromeVoxPanel::ExitFullscreen() {
fullscreen_ = false;
UpdateWidgetBounds();
}
void ChromeVoxPanel::DisableSpokenFeedback() {
chromeos::AccessibilityManager::Get()->EnableSpokenFeedback(
false, ui::A11Y_NOTIFICATION_NONE);
}
const views::Widget* ChromeVoxPanel::GetWidget() const {
return widget_;
}
views::Widget* ChromeVoxPanel::GetWidget() {
return widget_;
}
void ChromeVoxPanel::DeleteDelegate() {
delete this;
}
views::View* ChromeVoxPanel::GetContentsView() {
return web_view_;
}
void ChromeVoxPanel::OnDisplayMetricsChanged(const gfx::Display& display,
uint32_t changed_metrics) {
UpdateWidgetBounds();
}
void ChromeVoxPanel::UpdateWidgetBounds() {
gfx::Rect bounds(GetRootWindow()->bounds().size());
if (!fullscreen_)
bounds.set_height(kPanelHeight);
widget_->SetBounds(bounds);
}
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