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comparison: gfx/skia/trunk/src/views/SkViewInflate.cpp
gfx/skia/trunk/src/views/SkViewInflate.cpp
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| -1:000000000000 | 0:d42a509b1a93 |
|---|---|
| 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, "target")) != NULL) | |
| 41 this->addIDStr(&fListenTo, parent, target); | |
| 42 | |
| 43 if (!strcmp(name, "broadcastTo") && (target = dom.findAttr(child, "target")) != NULL) | |
| 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::Node* 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 == NULL) | |
| 66 { | |
| 67 root = this->createView(dom, node); | |
| 68 if (root == NULL) | |
| 69 { | |
| 70 printf("createView returned NULL on <%s>\n", dom.getName(node)); | |
| 71 return NULL; | |
| 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) : NULL; | |
| 107 } | |
| 108 | |
| 109 SkView* SkViewInflate::findViewByID(const char id[]) const | |
| 110 { | |
| 111 SkASSERT(id); | |
| 112 SkView* view; | |
| 113 return fIDs.find(id, &view) ? view : NULL; | |
| 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 NULL; | |
| 121 } | |
| 122 | |
| 123 void SkViewInflate::addIDStr(SkTDArray<IDStr>* list, SkView* view, const char* str) | |
| 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 |
