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1 // Copyright 2015 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 "cc/blink/web_compositor_mutable_state_provider_impl.h" | |
6 | |
7 #include "cc/blink/web_compositor_mutable_state_impl.h" | |
8 #include "cc/layers/layer_impl.h" | |
9 #include "cc/trees/layer_tree_impl.h" | |
10 | |
11 namespace cc_blink { | |
12 | |
13 WebCompositorMutableStateProviderImpl::WebCompositorMutableStateProviderImpl( | |
14 cc::LayerTreeImpl* state, | |
15 cc::LayerTreeMutationMap* mutations) | |
16 : state_(state), mutations_(mutations) {} | |
17 | |
18 WebCompositorMutableStateProviderImpl:: | |
19 ~WebCompositorMutableStateProviderImpl() {} | |
20 | |
21 blink::WebPassOwnPtr<blink::WebCompositorMutableState> | |
22 WebCompositorMutableStateProviderImpl::getMutableStateFor(uint64_t element_id) { | |
23 cc::LayerTreeImpl::ElementLayers layers = | |
24 state_->GetMutableLayers(element_id); | |
25 | |
26 if (!layers.main && !layers.scroll) | |
27 return nullptr; | |
28 | |
29 return blink::adoptWebPtr<blink::WebCompositorMutableState>( | |
30 new WebCompositorMutableStateImpl(&(*mutations_)[element_id], layers.main, | |
31 layers.scroll)); | |
32 } | |
33 | |
34 } // namespace cc_blink | |
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