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1 | |
2 /* | |
3 * Copyright 2011 Google Inc. | |
4 * | |
5 * Use of this source code is governed by a BSD-style license that can be | |
6 * found in the LICENSE file. | |
7 */ | |
8 #include "SkViewInflate.h" | |
9 #include "SkView.h" | |
10 #include <stdio.h> | |
11 | |
12 SkViewInflate::SkViewInflate() : fIDs(kMinIDStrAlloc), fStrings(kMinIDStrAlloc) | |
13 { | |
14 } | |
15 | |
16 SkViewInflate::~SkViewInflate() | |
17 { | |
18 } | |
19 | |
20 void SkViewInflate::rInflate(const SkDOM& dom, const SkDOM::Node* node, SkView*
parent) | |
21 { | |
22 const char* str = dom.findAttr(node, "id"); | |
23 if (str) | |
24 fIDs.set(str, parent); | |
25 | |
26 const SkDOM::Node* child = dom.getFirstChild(node); | |
27 while (child) | |
28 { | |
29 SkView* view = this->createView(dom, child); | |
30 if (view) | |
31 { | |
32 this->rInflate(dom, child, view); | |
33 parent->attachChildToFront(view)->unref(); | |
34 } | |
35 else | |
36 { | |
37 const char* name = dom.getName(child); | |
38 const char* target; | |
39 | |
40 if (!strcmp(name, "listenTo") && (target = dom.findAttr(child, "targ
et")) != nullptr) | |
41 this->addIDStr(&fListenTo, parent, target); | |
42 | |
43 if (!strcmp(name, "broadcastTo") && (target = dom.findAttr(child, "t
arget")) != nullptr) | |
44 this->addIDStr(&fBroadcastTo, parent, target); | |
45 } | |
46 child = dom.getNextSibling(child); | |
47 } | |
48 | |
49 parent->setVisibleP(true); | |
50 this->inflateView(parent, dom, node); | |
51 } | |
52 | |
53 void SkViewInflate::inflateView(SkView* view, const SkDOM& dom, const SkDOM::Nod
e* node) | |
54 { | |
55 // called after all of view's children have been instantiated. | |
56 // this may be overridden by a subclass, to load in layout or other helpers | |
57 // they should call through to us (INHERITED) before or after their patch | |
58 view->inflate(dom, node); | |
59 } | |
60 | |
61 SkView* SkViewInflate::inflate(const SkDOM& dom, const SkDOM::Node* node, SkView
* root) | |
62 { | |
63 fIDs.reset(); | |
64 | |
65 if (root == nullptr) | |
66 { | |
67 root = this->createView(dom, node); | |
68 if (root == nullptr) | |
69 { | |
70 printf("createView returned nullptr on <%s>\n", dom.getName(node)); | |
71 return nullptr; | |
72 } | |
73 } | |
74 this->rInflate(dom, node, root); | |
75 | |
76 // resolve listeners and broadcasters | |
77 { | |
78 SkView* target; | |
79 const IDStr* iter = fListenTo.begin(); | |
80 const IDStr* stop = fListenTo.end(); | |
81 for (; iter < stop; iter++) | |
82 { | |
83 if (fIDs.find(iter->fStr, &target)) | |
84 target->addListenerID(iter->fView->getSinkID()); | |
85 } | |
86 | |
87 iter = fBroadcastTo.begin(); | |
88 stop = fBroadcastTo.end(); | |
89 for (; iter < stop; iter++) | |
90 { | |
91 if (fIDs.find(iter->fStr, &target)) | |
92 iter->fView->addListenerID(target->getSinkID()); | |
93 } | |
94 } | |
95 | |
96 // now that the tree is built, give everyone a shot at the ID dict | |
97 root->postInflate(fIDs); | |
98 return root; | |
99 } | |
100 | |
101 SkView* SkViewInflate::inflate(const char xml[], size_t len, SkView* root) | |
102 { | |
103 SkDOM dom; | |
104 const SkDOM::Node* node = dom.build(xml, len); | |
105 | |
106 return node ? this->inflate(dom, node, root) : nullptr; | |
107 } | |
108 | |
109 SkView* SkViewInflate::findViewByID(const char id[]) const | |
110 { | |
111 SkASSERT(id); | |
112 SkView* view; | |
113 return fIDs.find(id, &view) ? view : nullptr; | |
114 } | |
115 | |
116 SkView* SkViewInflate::createView(const SkDOM& dom, const SkDOM::Node* node) | |
117 { | |
118 if (!strcmp(dom.getName(node), "view")) | |
119 return new SkView; | |
120 return nullptr; | |
121 } | |
122 | |
123 void SkViewInflate::addIDStr(SkTDArray<IDStr>* list, SkView* view, const char* s
tr) | |
124 { | |
125 size_t len = strlen(str) + 1; | |
126 IDStr* pair = list->append(); | |
127 pair->fView = view; | |
128 pair->fStr = (char*)fStrings.alloc(len, SkChunkAlloc::kThrow_AllocFailType); | |
129 memcpy(pair->fStr, str, len); | |
130 } | |
131 | |
132 #ifdef SK_DEBUG | |
133 void SkViewInflate::dump() const | |
134 { | |
135 const IDStr* iter = fListenTo.begin(); | |
136 const IDStr* stop = fListenTo.end(); | |
137 for (; iter < stop; iter++) | |
138 SkDebugf("inflate: listenTo(\"%s\")\n", iter->fStr); | |
139 | |
140 iter = fBroadcastTo.begin(); | |
141 stop = fBroadcastTo.end(); | |
142 for (; iter < stop; iter++) | |
143 SkDebugf("inflate: broadcastFrom(\"%s\")\n", iter->fStr); | |
144 } | |
145 #endif | |
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