reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef SkViewInflate_DEFINED |
| 18 | #define SkViewInflate_DEFINED |
| 19 | |
| 20 | #include "SkDOM.h" |
| 21 | #include "SkTDict.h" |
| 22 | #include "SkEvent.h" |
| 23 | |
| 24 | class SkView; |
| 25 | |
| 26 | class SkViewInflate { |
| 27 | public: |
| 28 | SkViewInflate(); |
| 29 | virtual ~SkViewInflate(); |
| 30 | |
| 31 | /** Return the tree of inflated views. If root is null, create the root element |
| 32 | as a view, otherwise assume root is that view, and just "inflate" it. |
| 33 | |
| 34 | Returns null if the tree cannot be built. |
| 35 | */ |
| 36 | SkView* inflate(const SkDOM& dom, const SkDOM::Node* node, SkView* root = NULL); |
| 37 | SkView* inflate(const char xml[], size_t len, SkView* root = NULL); |
| 38 | |
| 39 | /** Given an id attribute value, return the corresponding view, or null |
| 40 | if no match is found. |
| 41 | */ |
| 42 | SkView* findViewByID(const char id[]) const; |
| 43 | |
| 44 | SkDEBUGCODE(void dump() const;) |
| 45 | |
| 46 | protected: |
| 47 | /* Override this in your subclass to handle instantiating views |
| 48 | Call the inherited version for nodes you don't recognize. |
| 49 | |
| 50 | Do not call "inflate" on the view, just return it. This will |
| 51 | get called automatically after createView returns. |
| 52 | */ |
| 53 | virtual SkView* createView(const SkDOM& dom, const SkDOM::Node* node); |
| 54 | /** Base implementation calls view->inflate(dom, node). Subclasses may override this |
| 55 | to perform additional initializations to view, either before or after calling |
| 56 | the inherited version. |
| 57 | */ |
| 58 | virtual void inflateView(SkView* view, const SkDOM& dom, const SkDOM::Node* node); |
| 59 | |
| 60 | private: |
| 61 | enum { |
| 62 | kMinIDStrAlloc = 64 |
| 63 | }; |
| 64 | SkTDict<SkView*> fIDs; |
| 65 | |
| 66 | struct IDStr { |
| 67 | SkView* fView; |
| 68 | char* fStr; |
| 69 | }; |
| 70 | SkTDArray<IDStr> fListenTo, fBroadcastTo; |
| 71 | SkChunkAlloc fStrings; |
| 72 | |
| 73 | void addIDStr(SkTDArray<IDStr>* list, SkView*, const char* str); |
| 74 | |
| 75 | void rInflate(const SkDOM& dom, const SkDOM::Node* node, SkView* parent); |
| 76 | }; |
| 77 | |
| 78 | #endif |
| 79 | |