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// 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.
// Next MinVersion: 3
module arc.mojom;
import "screen_rect.mojom";
// For future maintainers, each of the below enums were hand picked
// from their equivalents in the Android source. Keep them in the
// order given below and add as needed. The initial order matches the
// order they appear in source files.
// AccessibilityEventType lists the possible accessibility events on Android.
// https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html
[Extensible]
enum AccessibilityEventType {
VIEW_FOCUSED,
VIEW_CLICKED,
VIEW_LONG_CLICKED,
VIEW_SELECTED,
VIEW_TEXT_CHANGED,
WINDOW_STATE_CHANGED,
NOTIFICATION_STATE_CHANGED,
VIEW_HOVER_ENTER,
VIEW_HOVER_EXIT,
TOUCH_EXPLORATION_GESTURE_START,
TOUCH_EXPLORATION_GESTURE_END,
WINDOW_CONTENT_CHANGED,
VIEW_SCROLLED,
VIEW_TEXT_SELECTION_CHANGED,
ANNOUNCEMENT,
VIEW_ACCESSIBILITY_FOCUSED,
VIEW_ACCESSIBILITY_FOCUS_CLEARED,
VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY,
GESTURE_DETECTION_START,
GESTURE_DETECTION_END,
TOUCH_INTERACTION_START,
TOUCH_INTERACTION_END,
WINDOWS_CHANGED,
VIEW_CONTEXT_CLICKED,
ASSIST_READING_CONTEXT,
};
// AccessibilityActionType lists possible accessibility actions on Android.
// https://developer.android.com/reference/android/view/accessibility/AccessibilityNodeInfo.html
[Extensible]
enum AccessibilityActionType {
FOCUS,
CLEAR_FOCUS,
SELECT,
CLEAR_SELECTION,
CLICK,
LONG_CLICK,
ACCESSIBILITY_FOCUS,
CLEAR_ACCESSIBILITY_FOCUS,
NEXT_AT_MOVEMENT_GRANULARITY, // unused
PREVIOUS_AT_MOVEMENT_GRANULARITY, // unused
NEXT_HTML_ELEMENT, // unused
PREVIOUS_HTML_ELEMENT, // unused
SCROLL_FORWARD,
SCROLL_BACKWARD,
COPY,
PASTE,
CUT,
SET_SELECTION,
EXPAND,
COLLAPSE,
DISMISS,
SET_TEXT
};
// Possible boolean properties set on an AccessibilityNodeInfo.
// https://developer.android.com/reference/android/view/accessibility/AccessibilityNodeInfo.html
// The enum values appear in the same order as they do within
// AccessibilityNodeInfo.java.
[Extensible]
enum AccessibilityBooleanProperty {
CHECKABLE,
CHECKED,
FOCUSABLE,
FOCUSED,
SELECTED,
CLICKABLE,
LONG_CLICKABLE,
ENABLED,
PASSWORD,
SCROLLABLE,
ACCESSIBILITY_FOCUSED,
VISIBLE_TO_USER,
EDITABLE,
OPENS_POPUP,
DISMISSABLE,
MULTI_LINE,
CONTENT_INVALID,
CONTEXT_CLICKABLE,
IMPORTANCE
};
// These fields are taken from string instance members of
// AccessibilityNodeInfo.
[Extensible]
enum AccessibilityStringProperty {
PACKAGE_NAME,
CLASS_NAME,
TEXT,
CONTENT_DESCRIPTION,
VIEW_ID_RESOURCE_NAME
};
// These fields are taken from int instance members of
// AccessibilityNodeInfo.
[Extensible]
enum AccessibilityIntProperty {
LABEL_FOR,
LABELED_BY,
TRAVERSAL_BEFORE,
TRAVERSAL_AFTER,
MAX_TEXT_LENGTH,
TEXT_SELECTION_START,
TEXT_SELECTION_END,
INPUT_TYPE,
LIVE_REGION
};
// These fields are taken from List<int> instance members of
// AccessibilityNodeInfo.
[Extensible]
enum AccessibilityIntListProperty {
CHILD_NODE_IDS,
ACTIONS
};
// AccessibilityNodeInfoData is a struct to contain info of
// AccessibilityNodeInfo in Android.
// https://developer.android.com/reference/android/view/accessibility/AccessibilityNodeInfo.html
struct AccessibilityNodeInfoData {
ScreenRect bounds_in_screen;
[MinVersion=1]int32 id;
[MinVersion=1]map<AccessibilityBooleanProperty, bool>? boolean_properties;
[MinVersion=1]map<AccessibilityStringProperty, string>? string_properties;
[MinVersion=1]map<AccessibilityIntProperty, int32>? int_properties;
[MinVersion=1]
map<AccessibilityIntListProperty, array<int32>>? int_list_properties;
};
// Filters the event type (and implicitly the data) sent by the ARC
// accessibility service.
[Extensible]
enum AccessibilityFilterType {
// No events will be sent.
OFF,
// Only send focus events along with the source focus node.
FOCUS,
// Send a complete tree from the event source's root for every event.
ALL,
// Send complete subtrees for root nodes with whitelisted package names.
[MinVersion=2]WHITELISTED_PACKAGE_NAME
};
// AccessibilityEventData is a struct to contain info of
// AccessibilityEvent in Android.
// https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html
struct AccessibilityEventData {
AccessibilityEventType event_type;
int32 source_id;
array<AccessibilityNodeInfoData> node_data;
};
// Next method ID: 2
interface AccessibilityHelperHost {
OnAccessibilityEventDeprecated@0(AccessibilityEventType event_type,
AccessibilityNodeInfoData? event_source);
// OnAccessibilityEvent is called when a converted Android accessibility event
// is sent from Android.
OnAccessibilityEvent@1(AccessibilityEventData event_data);
};
// Next method ID: 3
interface AccessibilityHelperInstance {
Init@0(AccessibilityHelperHost host);
// Perform the specified action on a node requested by a Chrome client.
PerformAction@1(int32 id, AccessibilityActionType action);
// Set a filter on the event types received.
SetFilter@2(AccessibilityFilterType filter_type);
};
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