Initial implementation of WebUI generator (WUG) toolkit.

components/webui_generator/view_model.cc

+// Copyright 2015 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 "components/webui_generator/view_model.h"
+
+#include "components/webui_generator/view.h"
+
+namespace webui_generator {
+
+ViewModel::ContextEditor::ContextEditor(ViewModel& view_model)
+    : view_model_(view_model), context_(view_model_.context()) {
+}
+
+ViewModel::ContextEditor::~ContextEditor() {
+  view_model_.CommitContextChanges();
+}
+
+const ViewModel::ContextEditor& ViewModel::ContextEditor::SetBoolean(
+    const KeyType& key,
+    bool value) const {
+  context_.SetBoolean(key, value);
+  return *this;
+}
+
+const ViewModel::ContextEditor& ViewModel::ContextEditor::SetInteger(
+    const KeyType& key,
+    int value) const {
+  context_.SetInteger(key, value);
+  return *this;
+}
+
+const ViewModel::ContextEditor& ViewModel::ContextEditor::SetDouble(
+    const KeyType& key,
+    double value) const {
+  context_.SetDouble(key, value);
+  return *this;
+}
+
+const ViewModel::ContextEditor& ViewModel::ContextEditor::SetString(
+    const KeyType& key,
+    const std::string& value) const {
+  context_.SetString(key, value);
+  return *this;
+}
+
+const ViewModel::ContextEditor& ViewModel::ContextEditor::SetString(
+    const KeyType& key,
+    const base::string16& value) const {
+  context_.SetString(key, value);
+  return *this;
+}
+
+const ViewModel::ContextEditor& ViewModel::ContextEditor::SetStringList(
+    const KeyType& key,
+    const StringList& value) const {
+  context_.SetStringList(key, value);
+  return *this;
+}
+
+const ViewModel::ContextEditor& ViewModel::ContextEditor::SetString16List(
+    const KeyType& key,
+    const String16List& value) const {
+  context_.SetString16List(key, value);
+  return *this;
+}
+
+ViewModel::ViewModel() : view_(nullptr) {
+}
+
+ViewModel::~ViewModel() {
+}
+
+void ViewModel::SetView(View* view) {
+  view_ = view;
+  Initialize();
+}
+
+void ViewModel::OnChildrenReady() {
+  OnAfterChildrenReady();
+  view_->OnViewModelReady();
+}
+
+void ViewModel::UpdateContext(const base::DictionaryValue& diff) {
+  std::vector<std::string> changed_keys;
+  context_.ApplyChanges(diff, &changed_keys);
+  OnContextChanged(changed_keys);
+}
+
+void ViewModel::OnEvent(const std::string& event) {
+}
+
+ViewModel::ContextEditor ViewModel::GetContextEditor() {
+  return ContextEditor(*this);
+}
+
+void ViewModel::CommitContextChanges() {
+  if (!context().HasChanges())
+    return;
+
+  base::DictionaryValue diff;
+  context().GetChangesAndReset(&diff);
+  view_->OnContextChanged(diff);
+}
+
+}  // namespace webui_generator