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318 lines
8.5 KiB
Plaintext
318 lines
8.5 KiB
Plaintext
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Next MinVersion: 9
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module arc.mojom;
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import "screen_rect.mojom";
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// For future maintainers, each of the below enums were hand picked
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// from their equivalents in the Android source. Keep them in the
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// order given below and add as needed. The initial order matches the
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// order they appear in source files.
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//
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// If not explicitly called out, the structs and enums below come from:
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// https://developer.android.com/reference/android/view/accessibility/AccessibilityNodeInfo.html
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// AccessibilityEventType lists the possible accessibility events on Android.
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// https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html
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[Extensible]
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enum AccessibilityEventType {
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VIEW_FOCUSED,
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VIEW_CLICKED,
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VIEW_LONG_CLICKED,
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VIEW_SELECTED,
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VIEW_TEXT_CHANGED,
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WINDOW_STATE_CHANGED,
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NOTIFICATION_STATE_CHANGED,
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VIEW_HOVER_ENTER,
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VIEW_HOVER_EXIT,
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TOUCH_EXPLORATION_GESTURE_START,
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TOUCH_EXPLORATION_GESTURE_END,
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WINDOW_CONTENT_CHANGED,
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VIEW_SCROLLED,
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VIEW_TEXT_SELECTION_CHANGED,
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ANNOUNCEMENT,
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VIEW_ACCESSIBILITY_FOCUSED,
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VIEW_ACCESSIBILITY_FOCUS_CLEARED,
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VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY,
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GESTURE_DETECTION_START,
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GESTURE_DETECTION_END,
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TOUCH_INTERACTION_START,
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TOUCH_INTERACTION_END,
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WINDOWS_CHANGED,
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VIEW_CONTEXT_CLICKED,
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ASSIST_READING_CONTEXT,
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};
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// Possible actions that can be performed on an AccessibilityNodeInfo.
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[Extensible]
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enum AccessibilityActionType {
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FOCUS,
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CLEAR_FOCUS,
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SELECT,
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CLEAR_SELECTION,
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CLICK,
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LONG_CLICK,
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ACCESSIBILITY_FOCUS,
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CLEAR_ACCESSIBILITY_FOCUS,
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NEXT_AT_MOVEMENT_GRANULARITY, // unused
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PREVIOUS_AT_MOVEMENT_GRANULARITY, // unused
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NEXT_HTML_ELEMENT, // unused
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PREVIOUS_HTML_ELEMENT, // unused
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SCROLL_FORWARD,
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SCROLL_BACKWARD,
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COPY,
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PASTE,
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CUT,
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SET_SELECTION,
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EXPAND,
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COLLAPSE,
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DISMISS,
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SET_TEXT,
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CONTEXT_CLICK,
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SCROLL_DOWN,
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SCROLL_LEFT,
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SCROLL_RIGHT,
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SCROLL_TO_POSITION,
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SCROLL_UP,
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SET_PROGRESS,
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SHOW_ON_SCREEN,
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CUSTOM_ACTION // Not a standard action.
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};
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// Possible boolean properties set on an AccessibilityNodeInfo.
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// The enum values appear in the same order as they do within
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// AccessibilityNodeInfo.java.
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[Extensible]
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enum AccessibilityBooleanProperty {
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CHECKABLE,
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CHECKED,
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FOCUSABLE,
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FOCUSED,
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SELECTED,
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CLICKABLE,
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LONG_CLICKABLE,
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ENABLED,
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PASSWORD,
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SCROLLABLE,
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ACCESSIBILITY_FOCUSED,
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VISIBLE_TO_USER,
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EDITABLE,
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OPENS_POPUP,
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DISMISSABLE,
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MULTI_LINE,
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CONTENT_INVALID,
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CONTEXT_CLICKABLE,
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IMPORTANCE
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};
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// These fields are taken from string instance members of
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// AccessibilityNodeInfo.
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[Extensible]
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enum AccessibilityStringProperty {
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PACKAGE_NAME,
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CLASS_NAME,
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TEXT,
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CONTENT_DESCRIPTION,
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VIEW_ID_RESOURCE_NAME,
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CHROME_ROLE, // Chrome only
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ROLE_DESCRIPTION // Chrome only
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};
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// These fields are taken from int instance members of
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// AccessibilityNodeInfo.
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[Extensible]
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enum AccessibilityIntProperty {
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LABEL_FOR,
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LABELED_BY,
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TRAVERSAL_BEFORE,
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TRAVERSAL_AFTER,
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MAX_TEXT_LENGTH,
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TEXT_SELECTION_START,
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TEXT_SELECTION_END,
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INPUT_TYPE,
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LIVE_REGION
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};
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// These fields are taken from List<int> instance members of
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// AccessibilityNodeInfo.
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[Extensible]
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enum AccessibilityIntListProperty {
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CHILD_NODE_IDS,
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CUSTOM_ACTION_IDS
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};
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// These fields are taken from List<String> instance members of
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// AccessibilityNodeInfo.
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[Extensible]
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enum AccessibilityStringListProperty {
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CUSTOM_ACTION_DESCRIPTIONS
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};
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// This type is a subset of spans available under android.text.style.
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[Extensible]
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enum SpanType {
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URL,
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CLICKABLE
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};
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// Groups data about a Spannable.
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struct SpanEntry {
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int32 start;
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int32 end;
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SpanType span_type;
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};
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// These fields are taken from AccessibilityNodeInfo.CollectionItemInfo.
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[Extensible]
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enum AccessibilitySelectionMode {
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NONE,
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SINGLE,
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MULTIPLE
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};
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// These fields are taken from AccessibilityNodeInfo.CollectionInfo.
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struct AccessibilityCollectionInfoData {
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int32 row_count;
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int32 column_count;
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bool is_hierarchical;
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AccessibilitySelectionMode selection_mode;
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};
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// These fields are taken from AccessibilityNodeInfo.CollectionItemInfo.
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struct AccessibilityCollectionItemInfoData {
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int32 row_index;
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int32 column_index;
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int32 row_span;
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int32 column_span;
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bool is_heading;
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bool is_selected;
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};
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// These fields are taken from AccessibilityNodeInfo.RangeInfo.
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[Extensible]
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enum AccessibilityRangeType {
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INT,
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FLOAT,
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PERCENT
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};
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// These fields are taken from AccessibilityNodeInfo.RangeInfo.
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struct AccessibilityRangeInfoData {
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AccessibilityRangeType range_type;
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float min;
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float max;
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float current;
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};
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// AccessibilityNodeInfoData is a struct to contain info of
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// AccessibilityNodeInfo in Android.
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struct AccessibilityNodeInfoData {
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ScreenRect bounds_in_screen;
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[MinVersion=1]int32 id;
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[MinVersion=1]map<AccessibilityBooleanProperty, bool>? boolean_properties;
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[MinVersion=1]map<AccessibilityStringProperty, string>? string_properties;
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[MinVersion=1]map<AccessibilityIntProperty, int32>? int_properties;
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[MinVersion=1]
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map<AccessibilityIntListProperty, array<int32>>? int_list_properties;
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[MinVersion=3]map<AccessibilityStringListProperty, array<string>>?
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string_list_properties;
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[MinVersion=5]map<AccessibilityStringProperty, array<SpanEntry>>?
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spannable_string_properties;
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[MinVersion=5]AccessibilityCollectionInfoData? collection_info;
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[MinVersion=5]AccessibilityCollectionItemInfoData? collection_item_info;
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[MinVersion=5]AccessibilityRangeInfoData? range_info;
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};
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// Filters the event type (and implicitly the data) sent by the ARC
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// accessibility service.
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[Extensible]
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enum AccessibilityFilterType {
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// No events will be sent.
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OFF,
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// Only send focus events along with the source focus node.
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FOCUS,
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// Send a complete tree from the event source's root for every event.
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ALL,
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// Send complete subtrees for root nodes with whitelisted package names.
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[MinVersion=2]WHITELISTED_PACKAGE_NAME
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};
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// AccessibilityEventData is a struct to contain info of
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// AccessibilityEvent in Android.
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// https://developer.android.com/reference/android/view/accessibility/AccessibilityEvent.html
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struct AccessibilityEventData {
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AccessibilityEventType event_type;
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int32 source_id;
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array<AccessibilityNodeInfoData> node_data;
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// notification_key is set only for an event on an Android notification.
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[MinVersion=6]string? notification_key;
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// window_id where this event is dispatched for. While this window_id matches
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// with AccessibilityNodeInfo.getWindowId now, do not expect that it always
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// matches with it.
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[MinVersion=6]int32 window_id;
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// Task associated with this event (usually the front task when this event
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// gets dispatched).
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[MinVersion=8]int32 task_id;
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};
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// AccessibilityActionData is a struct to contain info of AccessibilityAction in
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// Android.
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// https://developer.android.com/reference/android/view/accessibility/AccessibilityNodeInfo.AccessibilityAction.html
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struct AccessibilityActionData {
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int32 node_id;
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AccessibilityActionType action_type;
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// custom_action_id must be set if action_type is CUSTOM_ACTION.
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int32 custom_action_id;
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// window_id where the action is performed on.
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[MinVersion=6]int32 window_id;
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};
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// Next method ID: 2
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interface AccessibilityHelperHost {
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OnAccessibilityEventDeprecated@0(AccessibilityEventType event_type,
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AccessibilityNodeInfoData? event_source);
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// OnAccessibilityEvent is called when a converted Android accessibility event
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// is sent from Android.
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OnAccessibilityEvent@1(AccessibilityEventData event_data);
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};
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// Next method ID: 7
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interface AccessibilityHelperInstance {
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Init@0(AccessibilityHelperHost host);
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PerformActionDeprecated@1(int32 id, AccessibilityActionType action);
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// Set a filter on the event types received.
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SetFilter@2(AccessibilityFilterType filter_type);
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[MinVersion=3]PerformActionDeprecated2@3(AccessibilityActionData action_data);
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// Perform an action on a node requested by a Chrome client.
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[MinVersion=4]PerformAction@4(AccessibilityActionData action_data)
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=> (bool result);
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// Sets the package to use ChromeVox (true) or TalkBack (false). Returns true
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// if the request was processed.
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[MinVersion=7]SetNativeChromeVoxArcSupportDeprecated@5(
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string package_name, bool enabled) => (bool processed);
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// Sets the focused window's package to use ChromeVox (true) or TalkBack
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// (false).
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[MinVersion=8]SetNativeChromeVoxArcSupportForFocusedWindow@6(
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bool enabled) => (bool processed);
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};
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