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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "content/shell/browser/shell_platform_data_aura.h"
      6 
      7 #include "content/shell/browser/shell.h"
      8 #include "ui/aura/client/aura_constants.h"
      9 #include "ui/aura/client/default_capture_client.h"
     10 #include "ui/aura/env.h"
     11 #include "ui/aura/layout_manager.h"
     12 #include "ui/aura/test/test_focus_client.h"
     13 #include "ui/aura/test/test_window_tree_client.h"
     14 #include "ui/aura/window.h"
     15 #include "ui/aura/window_event_dispatcher.h"
     16 #include "ui/base/ime/input_method.h"
     17 #include "ui/base/ime/input_method_delegate.h"
     18 #include "ui/base/ime/input_method_factory.h"
     19 #include "ui/gfx/screen.h"
     20 #include "ui/wm/core/default_activation_client.h"
     21 
     22 namespace content {
     23 
     24 namespace {
     25 
     26 class FillLayout : public aura::LayoutManager {
     27  public:
     28   explicit FillLayout(aura::Window* root)
     29       : root_(root) {
     30   }
     31 
     32   virtual ~FillLayout() {}
     33 
     34  private:
     35   // aura::LayoutManager:
     36   virtual void OnWindowResized() OVERRIDE {
     37   }
     38 
     39   virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE {
     40     child->SetBounds(root_->bounds());
     41   }
     42 
     43   virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE {
     44   }
     45 
     46   virtual void OnWindowRemovedFromLayout(aura::Window* child) OVERRIDE {
     47   }
     48 
     49   virtual void OnChildWindowVisibilityChanged(aura::Window* child,
     50                                               bool visible) OVERRIDE {
     51   }
     52 
     53   virtual void SetChildBounds(aura::Window* child,
     54                               const gfx::Rect& requested_bounds) OVERRIDE {
     55     SetChildBoundsDirect(child, requested_bounds);
     56   }
     57 
     58   aura::Window* root_;
     59 
     60   DISALLOW_COPY_AND_ASSIGN(FillLayout);
     61 };
     62 
     63 class MinimalInputEventFilter : public ui::internal::InputMethodDelegate,
     64                                 public ui::EventHandler {
     65  public:
     66   explicit MinimalInputEventFilter(aura::WindowTreeHost* host)
     67       : host_(host),
     68         input_method_(ui::CreateInputMethod(this,
     69                                             gfx::kNullAcceleratedWidget)) {
     70     input_method_->Init(true);
     71     host_->window()->AddPreTargetHandler(this);
     72     host_->window()->SetProperty(aura::client::kRootWindowInputMethodKey,
     73                                  input_method_.get());
     74   }
     75 
     76   virtual ~MinimalInputEventFilter() {
     77     host_->window()->RemovePreTargetHandler(this);
     78     host_->window()->SetProperty(aura::client::kRootWindowInputMethodKey,
     79                                  static_cast<ui::InputMethod*>(NULL));
     80   }
     81 
     82  private:
     83   // ui::EventHandler:
     84   virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
     85     // See the comment in InputMethodEventFilter::OnKeyEvent() for details.
     86     if (event->IsTranslated()) {
     87       event->SetTranslated(false);
     88     } else {
     89       if (input_method_->DispatchKeyEvent(*event))
     90         event->StopPropagation();
     91     }
     92   }
     93 
     94   // ui::internal::InputMethodDelegate:
     95   virtual bool DispatchKeyEventPostIME(const ui::KeyEvent& event) OVERRIDE {
     96     // See the comment in InputMethodEventFilter::DispatchKeyEventPostIME() for
     97     // details.
     98     ui::KeyEvent aura_event(event);
     99     aura_event.SetTranslated(true);
    100     ui::EventDispatchDetails details =
    101         host_->dispatcher()->OnEventFromSource(&aura_event);
    102     return aura_event.handled() || details.dispatcher_destroyed;
    103   }
    104 
    105   aura::WindowTreeHost* host_;
    106   scoped_ptr<ui::InputMethod> input_method_;
    107 
    108   DISALLOW_COPY_AND_ASSIGN(MinimalInputEventFilter);
    109 };
    110 
    111 }
    112 
    113 ShellPlatformDataAura* Shell::platform_ = NULL;
    114 
    115 ShellPlatformDataAura::ShellPlatformDataAura(const gfx::Size& initial_size) {
    116   CHECK(aura::Env::GetInstance());
    117   host_.reset(aura::WindowTreeHost::Create(gfx::Rect(initial_size)));
    118   host_->InitHost();
    119   host_->window()->SetLayoutManager(new FillLayout(host_->window()));
    120 
    121   focus_client_.reset(new aura::test::TestFocusClient());
    122   aura::client::SetFocusClient(host_->window(), focus_client_.get());
    123 
    124   new wm::DefaultActivationClient(host_->window());
    125   capture_client_.reset(
    126       new aura::client::DefaultCaptureClient(host_->window()));
    127   window_tree_client_.reset(
    128       new aura::test::TestWindowTreeClient(host_->window()));
    129   ime_filter_.reset(new MinimalInputEventFilter(host_.get()));
    130 }
    131 
    132 ShellPlatformDataAura::~ShellPlatformDataAura() {
    133 }
    134 
    135 void ShellPlatformDataAura::ShowWindow() {
    136   host_->Show();
    137 }
    138 
    139 void ShellPlatformDataAura::ResizeWindow(const gfx::Size& size) {
    140   host_->SetBounds(gfx::Rect(size));
    141 }
    142 
    143 }  // namespace content
    144