| // Copyright 2013 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. |
| |
| #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_ANDROID_H_ |
| #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_ANDROID_H_ |
| |
| #include "base/android/scoped_java_ref.h" |
| #include "content/browser/accessibility/browser_accessibility_manager.h" |
| #include "content/browser/android/content_view_core_impl.h" |
| |
| namespace content { |
| |
| namespace aria_strings { |
| extern const char kAriaLivePolite[]; |
| extern const char kAriaLiveAssertive[]; |
| } |
| |
| class CONTENT_EXPORT BrowserAccessibilityManagerAndroid |
| : public BrowserAccessibilityManager { |
| public: |
| BrowserAccessibilityManagerAndroid( |
| base::android::ScopedJavaLocalRef<jobject> content_view_core, |
| const ui::AXTreeUpdate& initial_tree, |
| BrowserAccessibilityDelegate* delegate, |
| BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory()); |
| |
| virtual ~BrowserAccessibilityManagerAndroid(); |
| |
| static ui::AXTreeUpdate GetEmptyDocument(); |
| |
| void SetContentViewCore( |
| base::android::ScopedJavaLocalRef<jobject> content_view_core); |
| |
| // Implementation of BrowserAccessibilityManager. |
| virtual void NotifyAccessibilityEvent( |
| ui::AXEvent event_type, BrowserAccessibility* node) OVERRIDE; |
| |
| // -------------------------------------------------------------------------- |
| // Methods called from Java via JNI |
| // -------------------------------------------------------------------------- |
| |
| // Tree methods. |
| jint GetRootId(JNIEnv* env, jobject obj); |
| jboolean IsNodeValid(JNIEnv* env, jobject obj, jint id); |
| void HitTest(JNIEnv* env, jobject obj, jint x, jint y); |
| |
| // Populate Java accessibility data structures with info about a node. |
| jboolean PopulateAccessibilityNodeInfo( |
| JNIEnv* env, jobject obj, jobject info, jint id); |
| jboolean PopulateAccessibilityEvent( |
| JNIEnv* env, jobject obj, jobject event, jint id, jint event_type); |
| |
| // Perform actions. |
| void Click(JNIEnv* env, jobject obj, jint id); |
| void Focus(JNIEnv* env, jobject obj, jint id); |
| void Blur(JNIEnv* env, jobject obj); |
| void ScrollToMakeNodeVisible(JNIEnv* env, jobject obj, int id); |
| |
| // Return the id of the next node in tree order in the direction given by |
| // |forwards|, starting with |start_id|, that matches |element_type|, |
| // where |element_type| is a special uppercase string from TalkBack or |
| // BrailleBack indicating general categories of web content like |
| // "SECTION" or "CONTROL". Return 0 if not found. |
| jint FindElementType(JNIEnv* env, jobject obj, jint start_id, |
| jstring element_type, jboolean forwards); |
| |
| protected: |
| // AXTreeDelegate overrides. |
| virtual void OnRootChanged(ui::AXNode* new_root) OVERRIDE; |
| |
| virtual bool UseRootScrollOffsetsWhenComputingBounds() OVERRIDE; |
| |
| private: |
| // This gives BrowserAccessibilityManager::Create access to the class |
| // constructor. |
| friend class BrowserAccessibilityManager; |
| |
| // A weak reference to the Java BrowserAccessibilityManager object. |
| // This avoids adding another reference to BrowserAccessibilityManager and |
| // preventing garbage collection. |
| // Premature garbage collection is prevented by the long-lived reference in |
| // ContentViewCore. |
| JavaObjectWeakGlobalRef java_ref_; |
| |
| // Handle a hover event from the renderer process. |
| void HandleHoverEvent(BrowserAccessibility* node); |
| |
| DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManagerAndroid); |
| }; |
| |
| bool RegisterBrowserAccessibilityManager(JNIEnv* env); |
| |
| } |
| |
| #endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_ANDROID_H_ |