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      1 // Copyright (c) 2012 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 #ifndef CONTENT_COMMON_VIEW_MESSAGES_ENUMS_H_
      6 #define CONTENT_COMMON_VIEW_MESSAGES_ENUMS_H_
      7 
      8 #include "ipc/ipc_message_macros.h"
      9 
     10 // Values that may be OR'd together to form the 'flags' parameter of a
     11 // ViewHostMsg_UpdateRect_Params structure.
     12 struct ViewHostMsg_UpdateRect_Flags {
     13   enum {
     14     IS_RESIZE_ACK = 1 << 0,
     15     IS_RESTORE_ACK = 1 << 1,
     16     IS_REPAINT_ACK = 1 << 2,
     17   };
     18   static bool is_resize_ack(int flags) {
     19     return (flags & IS_RESIZE_ACK) != 0;
     20   }
     21   static bool is_restore_ack(int flags) {
     22     return (flags & IS_RESTORE_ACK) != 0;
     23   }
     24   static bool is_repaint_ack(int flags) {
     25     return (flags & IS_REPAINT_ACK) != 0;
     26   }
     27 };
     28 
     29 struct ViewMsg_Navigate_Type {
     30  public:
     31   enum Value {
     32     // Reload the page.
     33     RELOAD,
     34 
     35     // Reload the page, ignoring any cache entries.
     36     RELOAD_IGNORING_CACHE,
     37 
     38     // Reload the page using the original request URL.
     39     RELOAD_ORIGINAL_REQUEST_URL,
     40 
     41     // The navigation is the result of session restore and should honor the
     42     // page's cache policy while restoring form state. This is set to true if
     43     // restoring a tab/session from the previous session and the previous
     44     // session did not crash. If this is not set and the page was restored then
     45     // the page's cache policy is ignored and we load from the cache.
     46     RESTORE,
     47 
     48     // Like RESTORE, except that the navigation contains POST data.
     49     RESTORE_WITH_POST,
     50 
     51     // Navigation type not categorized by the other types.
     52     NORMAL
     53   };
     54 };
     55 
     56 enum AccessibilityMode {
     57   // WebKit accessibility is off and no accessibility information is
     58   // sent from the renderer to the browser process.
     59   AccessibilityModeOff,
     60 
     61   // WebKit accessibility is on, but only limited information about
     62   // editable text nodes is sent to the browser process. Useful for
     63   // implementing limited UIA on tablets.
     64   AccessibilityModeEditableTextOnly,
     65 
     66   // WebKit accessibility is on, and the full accessibility tree is synced
     67   // to the browser process. Useful for screen readers and magnifiers.
     68   AccessibilityModeComplete,
     69 };
     70 
     71 #endif  // CONTENT_COMMON_VIEW_MESSAGES_ENUMS_H_
     72