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1 /* | 1 /* |
2 * Copyright (C) 2009 Google Inc. All rights reserved. | 2 * Copyright (C) 2009 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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69 // | 69 // |
70 // All methods and attributes defined on the Window interface are exposed via | 70 // All methods and attributes defined on the Window interface are exposed via |
71 // the inner global object. Global variables defined by script running in the | 71 // the inner global object. Global variables defined by script running in the |
72 // Document also live on the inner global object. | 72 // Document also live on the inner global object. |
73 // | 73 // |
74 // ====== Outer Global Proxy ==== | 74 // ====== Outer Global Proxy ==== |
75 // The outer global proxy is reused across navigations. It implements the | 75 // The outer global proxy is reused across navigations. It implements the |
76 // security checks for same-origin/cross-origin access to the Window interface. | 76 // security checks for same-origin/cross-origin access to the Window interface. |
77 // When the check passes (i.e. the access is same-origin), the access is | 77 // When the check passes (i.e. the access is same-origin), the access is |
78 // forwarded to the inner global object of the active Document in this | 78 // forwarded to the inner global object of the active Document in this |
79 // WindowProxy's Frame). | 79 // WindowProxy's Frame. |
80 // | 80 // |
81 // When the security check fails, the access is delegated to the outer global | 81 // When the security check fails, the access is delegated to the outer global |
82 // proxy's cross-origin interceptors. The cross-origin interceptors may choose | 82 // proxy's cross-origin interceptors. The cross-origin interceptors may choose |
83 // to return a value (if the property is exposed cross-origin) or throw an | 83 // to return a value (if the property is exposed cross-origin) or throw an |
84 // exception otherwise. | 84 // exception otherwise. |
85 // | 85 // |
86 // Note that the cross-origin interceptors are only used for cross-origin | 86 // Note that the cross-origin interceptors are only used for cross-origin |
87 // accesses: a same-origin access to a method that is available cross-origin, | 87 // accesses: a same-origin access to a method that is available cross-origin, |
88 // such as Window.postMessage, will be delegated to the inner global object. | 88 // such as Window.postMessage, will be delegated to the inner global object. |
89 // | 89 // |
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255 // reference to the global proxy makes the entire context alive). In order to | 255 // reference to the global proxy makes the entire context alive). In order to |
256 // discard the v8::Context, |global_proxy_| needs to be a weak reference or | 256 // discard the v8::Context, |global_proxy_| needs to be a weak reference or |
257 // to be destroyed. | 257 // to be destroyed. |
258 ScopedPersistent<v8::Object> global_proxy_; | 258 ScopedPersistent<v8::Object> global_proxy_; |
259 Lifecycle lifecycle_; | 259 Lifecycle lifecycle_; |
260 }; | 260 }; |
261 | 261 |
262 } // namespace blink | 262 } // namespace blink |
263 | 263 |
264 #endif // WindowProxy_h | 264 #endif // WindowProxy_h |
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