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_EQ(PageTransitionGetQualifier(rhs), 0);
  15   DCHECK(PageTransitionIsValidType(rhs));
  16   return PageTransitionStripQualifier(lhs) == PageTransitionStripQualifier(rhs);
  17 }
  18
  19 PageTransition PageTransitionStripQualifier(PageTransition type) {
  20   return static_cast<PageTransition>(type & ~PAGE_TRANSITION_QUALIFIER_MASK);
  21 }
  22
  23 bool PageTransitionIsValidType(int32 type) {
  24   PageTransition t = PageTransitionStripQualifier(
  25       static_cast<PageTransition>(type));
  26   return (t <= PAGE_TRANSITION_LAST_CORE);
  27 }
  28
  29 PageTransition PageTransitionFromInt(int32 type) {
  30   if (!PageTransitionIsValidType(type)) {
  31     NOTREACHED() << "Invalid transition type " << type;
  32
  33     // Return a safe default so we don't have corrupt data in release mode.
  34     return PAGE_TRANSITION_LINK;
  35   }
  36   return static_cast<PageTransition>(type);
  37 }
  38
  39 bool PageTransitionIsMainFrame(PageTransition type) {
  40   int32 t = PageTransitionStripQualifier(type);
  41   return (t != PAGE_TRANSITION_AUTO_SUBFRAME &&
  42           t != PAGE_TRANSITION_MANUAL_SUBFRAME);
  43 }
  44
  45 bool PageTransitionIsRedirect(PageTransition type) {
  46   return (type & PAGE_TRANSITION_IS_REDIRECT_MASK) != 0;
  47 }
  48
  49 bool PageTransitionIsNewNavigation(PageTransition type) {
  50   return (type & PAGE_TRANSITION_FORWARD_BACK) == 0 &&
  51       !PageTransitionCoreTypeIs(type, PAGE_TRANSITION_RELOAD);
  52 }
  53
  54 int32 PageTransitionGetQualifier(PageTransition type) {
  55   return type & PAGE_TRANSITION_QUALIFIER_MASK;
  56 }
  57
  58 bool PageTransitionIsWebTriggerable(PageTransition type) {
  59   int32 t = PageTransitionStripQualifier(type);
  60   switch (t) {
  61     case PAGE_TRANSITION_LINK:
  62     case PAGE_TRANSITION_AUTO_SUBFRAME:
  63     case PAGE_TRANSITION_MANUAL_SUBFRAME:
  64     case PAGE_TRANSITION_FORM_SUBMIT:
  65       return true;
  66   }
  67   return false;
  68 }
  69
  70 const char* PageTransitionGetCoreTransitionString(PageTransition type) {
  71   int32 t = PageTransitionStripQualifier(type);
  72   switch (t) {
  73     case PAGE_TRANSITION_LINK: return "link";
  74     case PAGE_TRANSITION_TYPED: return "typed";
  75     case PAGE_TRANSITION_AUTO_BOOKMARK: return "auto_bookmark";
  76     case PAGE_TRANSITION_AUTO_SUBFRAME: return "auto_subframe";
  77     case PAGE_TRANSITION_MANUAL_SUBFRAME: return "manual_subframe";
  78     case PAGE_TRANSITION_GENERATED: return "generated";
  79     case PAGE_TRANSITION_AUTO_TOPLEVEL: return "auto_toplevel";
  80     case PAGE_TRANSITION_FORM_SUBMIT: return "form_submit";
  81     case PAGE_TRANSITION_RELOAD: return "reload";
  82     case PAGE_TRANSITION_KEYWORD: return "keyword";
  83     case PAGE_TRANSITION_KEYWORD_GENERATED: return "keyword_generated";
  84   }
  85   return NULL;
  86 }
  87
  88 }  // namespace ui