Launching + Views

mojo/examples/browser/browser.cc

 // Copyright 2014 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 "base/basictypes.h"
 #include "mojo/public/cpp/application/application.h"
 #include "mojo/services/public/cpp/view_manager/view.h"
 #include "mojo/services/public/cpp/view_manager/view_manager.h"
 #include "mojo/services/public/cpp/view_manager/view_manager_delegate.h"
 #include "mojo/services/public/cpp/view_manager/view_observer.h"
 #include "mojo/services/public/cpp/view_manager/view_tree_node.h"
 #include "mojo/services/public/interfaces/launcher/launcher.mojom.h"
 #include "mojo/views/native_widget_view_manager.h"
 #include "mojo/views/views_init.h"
 #include "ui/views/controls/textfield/textfield.h"
 #include "ui/views/controls/textfield/textfield_controller.h"
-#include "ui/views/layout/fill_layout.h"
+#include "ui/views/layout/layout_manager.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
 #include "url/gurl.h"
 
 namespace mojo {
 namespace examples {
 
+class NodeView : public views::View {
+ public:
+  explicit NodeView(view_manager::ViewTreeNode* node) : node_(node) {
+    // This class is provisional and assumes that the node has already been
+    // added to a parent. I suspect we'll want to make an improved version of
+    // this that lives in ui/views akin to NativeViewHost that properly
+    // attaches/detaches when the view is.
+    DCHECK(node->parent());
+  }
+  virtual ~NodeView() {}
+
+  // Overridden from views::View:
+  virtual void OnBoundsChanged(const gfx::Rect& previous_bounds) OVERRIDE {
+    node_->SetBounds(ConvertRectToWidget(GetLocalBounds()));
+  }
+
+ private:
+  view_manager::ViewTreeNode* node_;
+
+  DISALLOW_COPY_AND_ASSIGN(NodeView);
+};
+
+class BrowserLayoutManager : public views::LayoutManager {
+ public:
+  BrowserLayoutManager() {}
+  virtual ~BrowserLayoutManager() {}
+
+ private:
+  // Overridden from views::LayoutManager:
+  virtual void Layout(views::View* host) OVERRIDE {
+    // Browser view has two children:
+    // 1. text input field.
+    // 2. content view.
+    DCHECK_EQ(2, host->child_count());
+    views::View* text_field = host->child_at(0);
+    gfx::Size ps = text_field->GetPreferredSize();
+    text_field->SetBoundsRect(gfx::Rect(host->width(), ps.height()));
+    views::View* content_area = host->child_at(1);
+    content_area->SetBounds(0, text_field->bounds().bottom(), host->width(),
+                            host->height() - text_field->bounds().bottom());
+  }
+  virtual gfx::Size GetPreferredSize(const views::View* host) const OVERRIDE {
+    return gfx::Size();
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserLayoutManager);
+};
+
 // This is the basics of creating a views widget with a textfield.
 // TODO: cleanup!
 class Browser : public Application,
                 public view_manager::ViewManagerDelegate,
-                public views::TextfieldController {
+                public views::TextfieldController,
+                public InterfaceImpl<launcher::LauncherClient> {
  public:
-  Browser() : view_manager_(NULL), view_(NULL) {}
+  Browser() : view_manager_(NULL), view_(NULL), content_node_(NULL) {}
 
   virtual ~Browser() {
   }
 
  private:
   // Overridden from Application:
   virtual void Initialize() MOJO_OVERRIDE {
     views_init_.reset(new ViewsInit);
-
     view_manager::ViewManager::Create(this, this);
-
     ConnectTo("mojo:mojo_launcher", &launcher_);
+    launcher_.set_client(this);
   }
 
-  void CreateWidget() {
+  void CreateWidget(const gfx::Size& size) {
     views::Textfield* textfield = new views::Textfield;
     textfield->set_controller(this);
 
     views::WidgetDelegateView* widget_delegate = new views::WidgetDelegateView;
     widget_delegate->GetContentsView()->AddChildView(textfield);
-    widget_delegate->GetContentsView()->SetLayoutManager(new views::FillLayout);
+    widget_delegate->GetContentsView()->AddChildView(
+        new NodeView(content_node_));
+    widget_delegate->GetContentsView()->SetLayoutManager(
+        new BrowserLayoutManager);
 
     views::Widget* widget = new views::Widget;
     views::Widget::InitParams params(views::Widget::InitParams::TYPE_WINDOW);
     params.native_widget = new NativeWidgetViewManager(widget, view_);
     params.delegate = widget_delegate;
-    params.bounds = gfx::Rect(200, 200);
+    params.bounds = gfx::Rect(size.width(), size.height());
     widget->Init(params);
     widget->Show();
     textfield->RequestFocus();
   }
 
   // view_manager::ViewManagerDelegate:
   virtual void OnRootAdded(view_manager::ViewManager* view_manager,
                            view_manager::ViewTreeNode* root) OVERRIDE {
     // TODO: deal with OnRootAdded() being invoked multiple times.
     view_manager_ = view_manager;
     view_ = view_manager::View::Create(view_manager_);
     view_manager_->GetRoots().front()->SetActiveView(view_);
 
-    CreateWidget();
+    content_node_ = view_manager::ViewTreeNode::Create(view_manager_);
+    root->AddChild(content_node_);
+
+    root->SetFocus();
+
+    CreateWidget(root->bounds().size());
   }
   virtual void OnRootRemoved(view_manager::ViewManager* view_manager,
                              view_manager::ViewTreeNode* root) OVERRIDE {
   }
 
   // views::TextfieldController:
   virtual bool HandleKeyEvent(views::Textfield* sender,
                               const ui::KeyEvent& key_event) OVERRIDE {
     if (key_event.key_code() == ui::VKEY_RETURN) {
       GURL url(sender->text());
       printf("User entered this URL: %s\n", url.spec().c_str());
       launcher_->Launch(url.spec());
     }
     return false;
   }
 
+  // launcher::LauncherClient:
+  virtual void OnLaunch(
+      const String& handler_url,
+      URLResponsePtr response,
+      ScopedDataPipeConsumerHandle response_body_stream) OVERRIDE {
+    content_node_->Embed(handler_url);
+
+    launcher::LaunchablePtr launchable;
+    ConnectTo(handler_url, &launchable);
+    launchable->OnLaunch(response.Pass(),
+                         response_body_stream.Pass(),
+                         content_node_->id());
+  }
+
   scoped_ptr<ViewsInit> views_init_;
 
   view_manager::ViewManager* view_manager_;
   view_manager::View* view_;
+  view_manager::ViewTreeNode* content_node_;
   launcher::LauncherPtr launcher_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 }  // namespace examples
 
 // static
 Application* Application::Create() {
   return new examples::Browser;
 }
 
 }  // namespace mojo