chrome/common/extensions/api/automation_internal.idl

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // This is the implementation layer of the chrome.automation API, and is
   6 // essentially a translation of the internal accessibility tree update system
   7 // into an extension API.
   8 namespace automationInternal {
   9   dictionary Rect {
  10     long left;
  11     long top;
  12     long width;
  13     long height;
  14   };
  15
  16   // A compact representation of the accessibility information for a
  17   // single web object, in a form that can be serialized and sent from
  18   // one process to another.
  19   // See ui/accessibility/ax_node_data.h
  20   dictionary AXNodeData {
  21     long id;
  22     DOMString role;
  23     object state;
  24     Rect location;
  25
  26     object? boolAttributes;
  27     object? floatAttributes;
  28     object? htmlAttributes;
  29     object? intAttributes;
  30     object? intlistAttributes;
  31     object? stringAttributes;
  32     long[] childIds;
  33   };
  34
  35   // Data for an accessibility event and/or an atomic change to an accessibility
  36   // tree. See ui/accessibility/ax_tree_update.h for an extended explanation of
  37   // the tree update format.
  38   dictionary AXEventParams {
  39     // The process id of the renderer host.
  40     long processID;
  41
  42     // The routing id of the web contents that this update is for.
  43     long routingID;
  44
  45     // ID of the node that the event applies to.
  46     long targetID;
  47
  48     // The type of event that this update represents.
  49     DOMString eventType;
  50
  51     // A vector of nodes to update according to the rules described in
  52     // ui/ax_tree_update.h.
  53     AXNodeData[] nodes;
  54   };
  55
  56   // All possible actions that can be performed on automation nodes.
  57   enum ActionType {
  58     focus,
  59     do_default,
  60     make_visible,
  61     set_selection
  62   };
  63
  64   // Arguments required for all actions supplied to performAction.
  65   dictionary PerformActionRequiredParams {
  66     long processID;
  67     long routingID;
  68     long automationNodeID;
  69     ActionType actionType;
  70   };
  71
  72   // Arguments for the set_selection action supplied to performAction.
  73   dictionary SetSelectionParams {
  74     long startIndex;
  75     long endIndex;
  76   };
  77
  78   // Returns the process id and routing id of the tab whose accessibility was
  79   // enabled using enable().
  80   callback EnableCallback = void(long processID, long routingID);
  81
  82   interface Functions {
  83     // Enable automation of the active tab and retrieves its routing id for use
  84     // in future updates.
  85     static void enableCurrentTab(EnableCallback callback);
  86
  87     static void performAction(PerformActionRequiredParams args,
  88                               object opt_args);
  89   };
  90
  91   interface Events {
  92     // Fired when an accessibility event occurs
  93     static void onAccessibilityEvent(AXEventParams update);
  94   };
  95 };