1 // Copyright (c) 2012 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 "ui/views/view_model.h" 6 7 #include "base/logging.h" 8 #include "ui/views/view.h" 9 10 namespace views { 11 12 ViewModel::ViewModel() { 13 } 14 15 ViewModel::~ViewModel() { 16 // view are owned by their parent, no need to delete them. 17 } 18 19 void ViewModel::Add(View* view, int index) { 20 DCHECK_LE(index, static_cast<int>(entries_.size())); 21 DCHECK_GE(index, 0); 22 Entry entry; 23 entry.view = view; 24 entries_.insert(entries_.begin() + index, entry); 25 } 26 27 void ViewModel::Remove(int index) { 28 if (index == -1) 29 return; 30 31 check_index(index); 32 entries_.erase(entries_.begin() + index); 33 } 34 35 void ViewModel::Move(int index, int target_index) { 36 DCHECK_LT(index, static_cast<int>(entries_.size())); 37 DCHECK_GE(index, 0); 38 DCHECK_LT(target_index, static_cast<int>(entries_.size())); 39 DCHECK_GE(target_index, 0); 40 41 if (index == target_index) 42 return; 43 Entry entry(entries_[index]); 44 entries_.erase(entries_.begin() + index); 45 entries_.insert(entries_.begin() + target_index, entry); 46 } 47 48 void ViewModel::MoveViewOnly(int index, int target_index) { 49 if (index == target_index) 50 return; 51 if (target_index < index) { 52 View* view = entries_[index].view; 53 for (int i = index; i > target_index; --i) 54 entries_[i].view = entries_[i - 1].view; 55 entries_[target_index].view = view; 56 } else { 57 View* view = entries_[index].view; 58 for (int i = index; i < target_index; ++i) 59 entries_[i].view = entries_[i + 1].view; 60 entries_[target_index].view = view; 61 } 62 } 63 64 void ViewModel::Clear() { 65 Entries entries; 66 entries.swap(entries_); 67 for (size_t i = 0; i < entries.size(); ++i) 68 delete entries[i].view; 69 } 70 71 int ViewModel::GetIndexOfView(const View* view) const { 72 for (size_t i = 0; i < entries_.size(); ++i) { 73 if (entries_[i].view == view) 74 return static_cast<int>(i); 75 } 76 return -1; 77 } 78 79 } // namespace views 80
