| // 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 "chrome/browser/ash/accessibility/chromevox_panel.h" |
| |
| #include <memory> |
| |
| #include "ash/accessibility/accessibility_controller.h" |
| #include "ash/public/cpp/accessibility_controller_enums.h" |
| #include "base/memory/raw_ptr.h" |
| #include "chrome/browser/ash/accessibility/accessibility_manager.h" |
| #include "content/public/browser/web_contents_observer.h" |
| #include "extensions/common/constants.h" |
| #include "ui/views/widget/widget.h" |
| |
| namespace ash { |
| namespace { |
| |
| const char kChromeVoxPanelRelativeUrl[] = "/chromevox/panel/panel.html"; |
| const char kDisableSpokenFeedbackURLFragment[] = "close"; |
| const char kFocusURLFragment[] = "focus"; |
| const char kFullscreenURLFragment[] = "fullscreen"; |
| const char kWidgetName[] = "ChromeVoxPanel"; |
| const int kPanelHeight = 44; |
| |
| } // namespace |
| |
| class ChromeVoxPanel::ChromeVoxPanelWebContentsObserver |
| : public content::WebContentsObserver { |
| public: |
| ChromeVoxPanelWebContentsObserver(content::WebContents* web_contents, |
| ChromeVoxPanel* panel) |
| : content::WebContentsObserver(web_contents), panel_(panel) {} |
| |
| ChromeVoxPanelWebContentsObserver(const ChromeVoxPanelWebContentsObserver&) = |
| delete; |
| ChromeVoxPanelWebContentsObserver& operator=( |
| const ChromeVoxPanelWebContentsObserver&) = delete; |
| |
| ~ChromeVoxPanelWebContentsObserver() override {} |
| |
| 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) |
| AccessibilityManager::Get()->EnableSpokenFeedback(false); |
| else if (fragment == kFullscreenURLFragment) |
| panel_->EnterFullscreen(); |
| else if (fragment == kFocusURLFragment) |
| panel_->Focus(); |
| else |
| panel_->ExitFullscreen(); |
| } |
| |
| private: |
| raw_ptr<ChromeVoxPanel> panel_; |
| }; |
| |
| ChromeVoxPanel::ChromeVoxPanel(content::BrowserContext* browser_context) |
| : AccessibilityPanel(browser_context, GetUrlForContent(), kWidgetName) { |
| web_contents_observer_ = std::make_unique<ChromeVoxPanelWebContentsObserver>( |
| GetWebContents(), this); |
| |
| SetAccessibilityPanelFullscreen(false); |
| } |
| |
| ChromeVoxPanel::~ChromeVoxPanel() {} |
| |
| void ChromeVoxPanel::EnterFullscreen() { |
| Focus(); |
| SetAccessibilityPanelFullscreen(true); |
| } |
| |
| void ChromeVoxPanel::ExitFullscreen() { |
| GetWidget()->Deactivate(); |
| GetWidget()->widget_delegate()->SetCanActivate(false); |
| SetAccessibilityPanelFullscreen(false); |
| } |
| |
| void ChromeVoxPanel::Focus() { |
| GetWidget()->widget_delegate()->SetCanActivate(true); |
| GetWidget()->Activate(); |
| GetContentsView()->RequestFocus(); |
| } |
| |
| void ChromeVoxPanel::SetAccessibilityPanelFullscreen(bool fullscreen) { |
| gfx::Rect bounds(0, 0, 0, kPanelHeight); |
| auto state = fullscreen ? AccessibilityPanelState::FULLSCREEN |
| : AccessibilityPanelState::FULL_WIDTH; |
| AccessibilityController::Get()->SetAccessibilityPanelBounds(bounds, state); |
| } |
| |
| std::string ChromeVoxPanel::GetUrlForContent() { |
| std::string url(EXTENSION_PREFIX); |
| url += extension_misc::kChromeVoxExtensionId; |
| url += kChromeVoxPanelRelativeUrl; |
| |
| return url; |
| } |
| |
| } // namespace ash |