[Web Intents] Refactor picker to use WebIntentPickerModel.

chrome/browser/ui/intents/web_intent_picker_model.cc

+// Copyright (c) 2012 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.
+
+#include "chrome/browser/ui/intents/web_intent_picker_model.h"
+
+#include "base/logging.h"
+#include "base/stl_util.h"
+#include "chrome/browser/ui/intents/web_intent_picker_model_observer.h"
+#include "grit/ui_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/image/image.h"
+
+WebIntentPickerModel::WebIntentPickerModel()
+    : observer_(NULL),
+      inline_disposition_index_(std::string::npos) {
+}
+
+WebIntentPickerModel::~WebIntentPickerModel() {
+  DestroyItems();
+}
+
+void WebIntentPickerModel::AddItem(const string16& title,
+                                   const GURL& url,
+                                   Disposition disposition) {
+  items_.push_back(new Item(title, url, disposition));
+  if (observer_)
+    observer_->OnModelChanged(this);
+}
+
+void WebIntentPickerModel::RemoveItemAt(size_t index) {
+  DCHECK(index < items_.size());
+  std::vector<Item*>::iterator iter = items_.begin() + index;
+  delete *iter;
+  items_.erase(iter);
+  if (observer_)
+    observer_->OnModelChanged(this);
+}
+
+void WebIntentPickerModel::Clear() {
+  DestroyItems();
+  inline_disposition_index_ = std::string::npos;
+  if (observer_)
+    observer_->OnModelChanged(this);
+}
+
+const WebIntentPickerModel::Item& WebIntentPickerModel::GetItemAt(
+    size_t index) const {
+  DCHECK(index < items_.size());
+  return *items_[index];
+}
+
+size_t WebIntentPickerModel::GetItemCount() const {
+  return items_.size();
+}
+
+void WebIntentPickerModel::UpdateFaviconAt(size_t index,
+                                           const gfx::Image& image) {
+  DCHECK(index < items_.size());
+  items_[index]->favicon = image;
+  if (observer_)
+    observer_->OnFaviconChanged(this, index);
+}
+
+void WebIntentPickerModel::SetInlineDisposition(size_t index) {
+  DCHECK(index < items_.size());
+  inline_disposition_index_ = index;
+  if (observer_)
+    observer_->OnInlineDisposition(this);
+}
+
+bool WebIntentPickerModel::IsInlineDisposition() const {
+  return inline_disposition_index_ != std::string::npos;
+}
+
+void WebIntentPickerModel::DestroyItems() {
+  STLDeleteElements(&items_);
+}
+
+WebIntentPickerModel::Item::Item(const string16& title,
+                                 const GURL& url,
+                                 Disposition disposition)
+    : title(title),
+      url(url),
+      favicon(ui::ResourceBundle::GetSharedInstance().GetNativeImageNamed(
+          IDR_DEFAULT_FAVICON)),
+      disposition(disposition) {
+}
+
+WebIntentPickerModel::Item::~Item() {
+}