ui/base/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 "ui/base/page_transition_types.h"
   6
   7 #include "base/logging.h"
   8
   9 namespace ui {
  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 bool PageTransitionIsNewNavigation(PageTransition type) {
  51   return (type & PAGE_TRANSITION_FORWARD_BACK) == 0 &&
  52       !PageTransitionCoreTypeIs(type, PAGE_TRANSITION_RELOAD);
  53 }
  54
  55 int32 PageTransitionGetQualifier(PageTransition type) {
  56   return type & PAGE_TRANSITION_QUALIFIER_MASK;
  57 }
  58
  59 bool PageTransitionIsWebTriggerable(PageTransition type) {
  60   int32 t = PageTransitionStripQualifier(type);
  61   switch (t) {
  62     case PAGE_TRANSITION_LINK:
  63     case PAGE_TRANSITION_AUTO_SUBFRAME:
  64     case PAGE_TRANSITION_MANUAL_SUBFRAME:
  65     case PAGE_TRANSITION_FORM_SUBMIT:
  66       return true;
  67   }
  68   return false;
  69 }
  70
  71 const char* PageTransitionGetCoreTransitionString(PageTransition type) {
  72   int32 t = PageTransitionStripQualifier(type);
  73   switch (t) {
  74     case PAGE_TRANSITION_LINK: return "link";
  75     case PAGE_TRANSITION_TYPED: return "typed";
  76     case PAGE_TRANSITION_AUTO_BOOKMARK: return "auto_bookmark";
  77     case PAGE_TRANSITION_AUTO_SUBFRAME: return "auto_subframe";
  78     case PAGE_TRANSITION_MANUAL_SUBFRAME: return "manual_subframe";
  79     case PAGE_TRANSITION_GENERATED: return "generated";
  80     case PAGE_TRANSITION_AUTO_TOPLEVEL: return "auto_toplevel";
  81     case PAGE_TRANSITION_FORM_SUBMIT: return "form_submit";
  82     case PAGE_TRANSITION_RELOAD: return "reload";
  83     case PAGE_TRANSITION_KEYWORD: return "keyword";
  84     case PAGE_TRANSITION_KEYWORD_GENERATED: return "keyword_generated";
  85   }
  86   return NULL;
  87 }
  88
  89 }  // namespace ui