ui/views/view_model.cc

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