mozart: Add a simple tiling view manager.

examples/ui/tile/tile_app.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 <vector>
+
+#include "base/strings/string_split.h"
+#include "examples/ui/tile/tile_app.h"
+#include "examples/ui/tile/tile_view.h"
+#include "url/gurl.h"
+
+namespace examples {
+
+class TileViewProvider : public mojo::ui::ViewProvider {
+ public:
+  TileViewProvider(mojo::ApplicationImpl* app_impl,
+                   const std::vector<std::string>& view_urls)
+      : app_impl_(app_impl), view_urls_(view_urls) {}
+  ~TileViewProvider() override {}
+
+ private:
+  // |ViewProvider|:
+  void CreateView(mojo::InterfaceRequest<mojo::ServiceProvider> services,
+                  mojo::ServiceProviderPtr exposed_services,
+                  const CreateViewCallback& callback) override {
+    new TileView(app_impl_, view_urls_, callback);
+  }
+
+  mojo::ApplicationImpl* app_impl_;
+  std::vector<std::string> view_urls_;
+
+  DISALLOW_COPY_AND_ASSIGN(TileViewProvider);
+};
+
+TileApp::TileApp() {}
+
+TileApp::~TileApp() {}
+
+void TileApp::Initialize(mojo::ApplicationImpl* app_impl) {
+  app_impl_ = app_impl;
+}
+
+bool TileApp::ConfigureIncomingConnection(
+    mojo::ApplicationConnection* connection) {
+  connection->AddService<mojo::ui::ViewProvider>(this);
+  return true;
+}
+
+void TileApp::Create(mojo::ApplicationConnection* connection,
+                     mojo::InterfaceRequest<mojo::ui::ViewProvider> request) {
+  GURL url(connection->GetConnectionURL());
+  std::vector<std::string> view_urls;
+  base::SplitString(url.query(), ',', &view_urls);
+
+  if (view_urls.empty()) {
+    LOG(ERROR) << "Must supply comma-delimited URLs of mojo views to tile as a "
+                  "query parameter.";
+    return;
+  }
+
+  bindings_.AddBinding(new TileViewProvider(app_impl_, view_urls),
+                       request.Pass());
+}
+
+}  // namespace examples