[Mac] Consolidate all files relating to preferences in a subdir of c/b/ui/coc...

chrome/browser/ui/cocoa/search_engine_list_model.mm

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#import "chrome/browser/ui/cocoa/search_engine_list_model.h"
-
-#include "base/sys_string_conversions.h"
-#include "chrome/browser/search_engines/template_url.h"
-#include "chrome/browser/search_engines/template_url_model.h"
-#include "chrome/browser/search_engines/template_url_model_observer.h"
-
-NSString* const kSearchEngineListModelChangedNotification =
-    @"kSearchEngineListModelChangedNotification";
-
-@interface SearchEngineListModel(Private)
-- (void)buildEngineList;
-@end
-
-// C++ bridge from TemplateURLModel to our Obj-C model. When it's told about
-// model changes, notifies us to rebuild the list.
-class SearchEngineObserver : public TemplateURLModelObserver {
- public:
-  SearchEngineObserver(SearchEngineListModel* notify)
-      : notify_(notify) { }
-  virtual ~SearchEngineObserver() { };
-
- private:
-  // TemplateURLModelObserver methods.
-  virtual void OnTemplateURLModelChanged() { [notify_ buildEngineList]; }
-
-  SearchEngineListModel* notify_;  // weak, owns us
-};
-
-@implementation SearchEngineListModel
-
-// The windows code allows for a NULL |model| and checks for it throughout
-// the code, though I'm not sure why. We follow suit.
-- (id)initWithModel:(TemplateURLModel*)model {
-  if ((self = [super init])) {
-    model_ = model;
-    if (model_) {
-      observer_.reset(new SearchEngineObserver(self));
-      model_->Load();
-      model_->AddObserver(observer_.get());
-      [self buildEngineList];
-    }
-  }
-  return self;
-}
-
-- (void)dealloc {
-  if (model_)
-    model_->RemoveObserver(observer_.get());
-  [super dealloc];
-}
-
-// Returns an array of NSString's corresponding to the user-visible names of the
-// search engines.
-- (NSArray*)searchEngines {
-  return engines_.get();
-}
-
-- (void)setSearchEngines:(NSArray*)engines {
-  engines_.reset([engines retain]);
-
-  // Tell anyone who's listening that something has changed so they need to
-  // adjust the UI.
-  [[NSNotificationCenter defaultCenter]
-      postNotificationName:kSearchEngineListModelChangedNotification
-                    object:nil];
-}
-
-// Walks the model and builds an array of NSStrings to display to the user.
-// Assumes there is a non-NULL model.
-- (void)buildEngineList {
-  scoped_nsobject<NSMutableArray> engines([[NSMutableArray alloc] init]);
-
-  typedef std::vector<const TemplateURL*> TemplateURLs;
-  TemplateURLs modelURLs = model_->GetTemplateURLs();
-  for (size_t i = 0; i < modelURLs.size(); ++i) {
-    if (modelURLs[i]->ShowInDefaultList())
-      [engines addObject:base::SysWideToNSString(modelURLs[i]->short_name())];
-  }
-
-  [self setSearchEngines:engines.get()];
-}
-
-// The index into |-searchEngines| of the current default search engine.
-// -1 if there is no default.
-- (NSInteger)defaultIndex {
-  if (!model_) return -1;
-
-  NSInteger index = 0;
-  const TemplateURL* defaultSearchProvider = model_->GetDefaultSearchProvider();
-  if (defaultSearchProvider) {
-    typedef std::vector<const TemplateURL*> TemplateURLs;
-    TemplateURLs urls = model_->GetTemplateURLs();
-    for (std::vector<const TemplateURL*>::iterator it = urls.begin();
-         it != urls.end(); ++it) {
-      const TemplateURL* url = *it;
-      // Skip all the URLs not shown on the default list.
-      if (!url->ShowInDefaultList())
-        continue;
-      if (url->id() == defaultSearchProvider->id())
-        return index;
-      ++index;
-    }
-  }
-  return -1;
-}
-
-- (void)setDefaultIndex:(NSInteger)index {
-  if (model_) {
-    typedef std::vector<const TemplateURL*> TemplateURLs;
-    TemplateURLs urls = model_->GetTemplateURLs();
-    for (std::vector<const TemplateURL*>::iterator it = urls.begin();
-         it != urls.end(); ++it) {
-      const TemplateURL* url = *it;
-      // Skip all the URLs not shown on the default list.
-      if (!url->ShowInDefaultList())
-        continue;
-      if (0 == index) {
-        model_->SetDefaultSearchProvider(url);
-        return;
-      }
-      --index;
-    }
-    DCHECK(false);
-  }
-}
-
-// Return TRUE if the default is managed via policy.
-- (BOOL)isDefaultManaged {
-  return model_->is_default_search_managed();
-}
-@end