blob: 48aff13febafb4d4029fbff6f32d548e26b01a32 [file] [log] [blame]
// Copyright 2017 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 CHROME_RENDERER_EXTENSIONS_AUTOMATION_AX_TREE_WRAPPER_H_
#define CHROME_RENDERER_EXTENSIONS_AUTOMATION_AX_TREE_WRAPPER_H_
#include "ui/accessibility/ax_event_generator.h"
#include "ui/accessibility/ax_tree.h"
struct ExtensionMsg_AccessibilityEventBundleParams;
namespace extensions {
class AutomationInternalCustomBindings;
// A class that wraps one AXTree and all of the additional state
// and helper methods needed to use it for the automation API.
class AutomationAXTreeWrapper : public ui::AXEventGenerator {
public:
AutomationAXTreeWrapper(int tree_id, AutomationInternalCustomBindings* owner);
~AutomationAXTreeWrapper() override;
int32_t tree_id() const { return tree_id_; }
ui::AXTree* tree() { return &tree_; }
AutomationInternalCustomBindings* owner() { return owner_; }
// The host node ID is the node ID of the parent node in the parent tree.
// For example, the host node ID of a web area of a child frame is the
// ID of the <iframe> element in its parent frame.
int32_t host_node_id() const { return host_node_id_; }
void set_host_node_id(int32_t id) { host_node_id_ = id; }
// Called by AutomationInternalCustomBindings::OnAccessibilityEvents on
// the AutomationAXTreeWrapper instance for the correct tree corresponding
// to this event. Unserializes the tree update and calls back to
// AutomationInternalCustomBindings to fire any automation events needed.
bool OnAccessibilityEvents(
const ExtensionMsg_AccessibilityEventBundleParams& events,
bool is_active_profile);
private:
// AXEventGenerator overrides.
void OnNodeDataWillChange(ui::AXTree* tree,
const ui::AXNodeData& old_node_data,
const ui::AXNodeData& new_node_data) override;
void OnNodeWillBeDeleted(ui::AXTree* tree, ui::AXNode* node) override;
void OnAtomicUpdateFinished(ui::AXTree* tree,
bool root_changed,
const std::vector<Change>& changes) override;
// Given an event, return true if the event is handled by
// AXEventGenerator, and false if it's not. Temporary, this will be
// removed with the AXEventGenerator refactoring is complete.
bool IsEventTypeHandledByAXEventGenerator(api::automation::EventType) const;
int32_t tree_id_;
int32_t host_node_id_;
ui::AXTree tree_;
AutomationInternalCustomBindings* owner_;
std::vector<int> deleted_node_ids_;
std::vector<int> text_changed_node_ids_;
DISALLOW_COPY_AND_ASSIGN(AutomationAXTreeWrapper);
};
} // namespace extensions
#endif // CHROME_RENDERER_EXTENSIONS_AUTOMATION_AX_TREE_WRAPPER_H_