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1 /* | 1 /* |
2 * Copyright (C) 2014 Google Inc. All rights reserved. | 2 * Copyright (C) 2014 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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30 | 30 |
31 #include "config.h" | 31 #include "config.h" |
32 #include "core/html/imports/HTMLImportStateResolver.h" | 32 #include "core/html/imports/HTMLImportStateResolver.h" |
33 | 33 |
34 #include "core/html/imports/HTMLImport.h" | 34 #include "core/html/imports/HTMLImport.h" |
35 | 35 |
36 namespace WebCore { | 36 namespace WebCore { |
37 | 37 |
38 inline bool HTMLImportStateResolver::isBlockingFollowers(HTMLImport* import) | 38 inline bool HTMLImportStateResolver::isBlockingFollowers(HTMLImport* import) |
39 { | 39 { |
40 if (!import->hasLoader()) | 40 if (!import->loader()) |
41 return true; | 41 return true; |
42 if (!import->ownsLoader()) | |
43 return false; | |
44 return !import->state().isReady(); | 42 return !import->state().isReady(); |
45 } | 43 } |
46 | 44 |
47 inline bool HTMLImportStateResolver::shouldBlockDocumentCreation() const | 45 inline bool HTMLImportStateResolver::shouldBlockScriptExecution() const |
48 { | 46 { |
49 // If any of its preceeding imports isn't ready, this import | |
50 // cannot start loading because such preceeding onces can include | |
51 // duplicating import that should wins over this. | |
52 for (const HTMLImport* ancestor = m_import; ancestor; ancestor = ancestor->p
arent()) { | 47 for (const HTMLImport* ancestor = m_import; ancestor; ancestor = ancestor->p
arent()) { |
53 if (ancestor->previous() && isBlockingFollowers(ancestor->previous())) | 48 if (ancestor->previous() && isBlockingFollowers(ancestor->previous())) |
54 return true; | 49 return true; |
55 } | 50 } |
56 | 51 |
57 return false; | |
58 } | |
59 | |
60 inline bool HTMLImportStateResolver::shouldBlockScriptExecution() const | |
61 { | |
62 for (HTMLImport* child = m_import->firstChild(); child; child = child->next(
)) { | 52 for (HTMLImport* child = m_import->firstChild(); child; child = child->next(
)) { |
63 if (child->isSync() && isBlockingFollowers(child)) | 53 if (child->isSync() && isBlockingFollowers(child)) |
64 return true; | 54 return true; |
65 } | 55 } |
66 | 56 |
67 return false; | 57 return false; |
68 } | 58 } |
69 | 59 |
70 inline bool HTMLImportStateResolver::isActive() const | 60 inline bool HTMLImportStateResolver::isActive() const |
71 { | 61 { |
72 return !m_import->isDone(); | 62 return !m_import->isDone(); |
73 } | 63 } |
74 | 64 |
75 HTMLImportState HTMLImportStateResolver::resolve() const | 65 HTMLImportState HTMLImportStateResolver::resolve() const |
76 { | 66 { |
77 if (shouldBlockDocumentCreation()) | |
78 return HTMLImportState(HTMLImportState::BlockingDocumentCreation); | |
79 if (shouldBlockScriptExecution()) | 67 if (shouldBlockScriptExecution()) |
80 return HTMLImportState(HTMLImportState::BlockingScriptExecution); | 68 return HTMLImportState(HTMLImportState::BlockingScriptExecution); |
81 if (isActive()) | 69 if (isActive()) |
82 return HTMLImportState(HTMLImportState::Active); | 70 return HTMLImportState(HTMLImportState::Active); |
83 return HTMLImportState(HTMLImportState::Ready); | 71 return HTMLImportState(HTMLImportState::Ready); |
84 } | 72 } |
85 | 73 |
86 } | 74 } |
87 | 75 |
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