src/content/public/common/page_transition_types.cc

   1 // Copyright (c) 2010 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 #include "content/public/common/page_transition_types.h"
   6
   7 #include "base/logging.h"
   8
   9 namespace content {
  10
  11 bool PageTransitionCoreTypeIs(PageTransition lhs,
  12                               PageTransition rhs) {
  13   // Expect the rhs to be a compile time constant without qualifiers.
  14   DCHECK(PageTransitionGetQualifier(rhs) == 0 &&
  15       PageTransitionIsValidType(rhs));
  16   return implicit_cast<int>(PageTransitionStripQualifier(lhs)) ==
  17       implicit_cast<int>(PageTransitionStripQualifier(rhs));
  18 }
  19
  20 PageTransition PageTransitionStripQualifier(PageTransition type) {
  21   return static_cast<PageTransition>(type & ~PAGE_TRANSITION_QUALIFIER_MASK);
  22 }
  23
  24 bool PageTransitionIsValidType(int32 type) {
  25   PageTransition t = PageTransitionStripQualifier(
  26       static_cast<PageTransition>(type));
  27   return (t <= PAGE_TRANSITION_LAST_CORE);
  28 }
  29
  30 PageTransition PageTransitionFromInt(int32 type) {
  31   if (!PageTransitionIsValidType(type)) {
  32     NOTREACHED() << "Invalid transition type " << type;
  33
  34     // Return a safe default so we don't have corrupt data in release mode.
  35     return PAGE_TRANSITION_LINK;
  36   }
  37   return static_cast<PageTransition>(type);
  38 }
  39
  40 bool PageTransitionIsMainFrame(PageTransition type) {
  41   int32 t = PageTransitionStripQualifier(type);
  42   return (t != PAGE_TRANSITION_AUTO_SUBFRAME &&
  43           t != PAGE_TRANSITION_MANUAL_SUBFRAME);
  44 }
  45
  46 bool PageTransitionIsRedirect(PageTransition type) {
  47   return (type & PAGE_TRANSITION_IS_REDIRECT_MASK) != 0;
  48 }
  49
  50 int32 PageTransitionGetQualifier(PageTransition type) {
  51   return type & PAGE_TRANSITION_QUALIFIER_MASK;
  52 }
  53
  54 bool PageTransitionIsWebTriggerable(PageTransition type) {
  55   int32 t = PageTransitionStripQualifier(type);
  56   switch (t) {
  57     case PAGE_TRANSITION_LINK:
  58     case PAGE_TRANSITION_AUTO_SUBFRAME:
  59     case PAGE_TRANSITION_MANUAL_SUBFRAME:
  60     case PAGE_TRANSITION_FORM_SUBMIT:
  61       return true;
  62   }
  63   return false;
  64 }
  65
  66 const char* PageTransitionGetCoreTransitionString(PageTransition type) {
  67   int32 t = PageTransitionStripQualifier(type);
  68   switch (t) {
  69     case PAGE_TRANSITION_LINK: return "link";
  70     case PAGE_TRANSITION_TYPED: return "typed";
  71     case PAGE_TRANSITION_AUTO_BOOKMARK: return "auto_bookmark";
  72     case PAGE_TRANSITION_AUTO_SUBFRAME: return "auto_subframe";
  73     case PAGE_TRANSITION_MANUAL_SUBFRAME: return "manual_subframe";
  74     case PAGE_TRANSITION_GENERATED: return "generated";
  75     case PAGE_TRANSITION_AUTO_TOPLEVEL: return "auto_toplevel";
  76     case PAGE_TRANSITION_FORM_SUBMIT: return "form_submit";
  77     case PAGE_TRANSITION_RELOAD: return "reload";
  78     case PAGE_TRANSITION_KEYWORD: return "keyword";
  79     case PAGE_TRANSITION_KEYWORD_GENERATED: return "keyword_generated";
  80   }
  81   return NULL;
  82 }
  83
  84 }  // namespace content