ui/keyboard/keyboard_controller_proxy.cc

   1 // Copyright (c) 2013 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 "ui/keyboard/keyboard_controller_proxy.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/values.h"
   9 #include "content/public/browser/site_instance.h"
  10 #include "content/public/browser/web_contents.h"
  11 #include "content/public/browser/web_contents.h"
  12 #include "content/public/browser/web_contents_delegate.h"
  13 #include "content/public/browser/web_contents_observer.h"
  14 #include "content/public/browser/web_ui.h"
  15 #include "content/public/common/bindings_policy.h"
  16 #include "ui/aura/layout_manager.h"
  17 #include "ui/aura/window.h"
  18 #include "ui/base/ime/input_method.h"
  19 #include "ui/base/ime/text_input_client.h"
  20 #include "ui/keyboard/keyboard_constants.h"
  21 #include "ui/keyboard/keyboard_switches.h"
  22 #include "ui/keyboard/keyboard_util.h"
  23 #include "ui/wm/core/shadow.h"
  24
  25 namespace {
  26
  27 // The WebContentsDelegate for the keyboard.
  28 // The delegate deletes itself when the keyboard is destroyed.
  29 class KeyboardContentsDelegate : public content::WebContentsDelegate,
  30                                  public content::WebContentsObserver {
  31  public:
  32   KeyboardContentsDelegate(keyboard::KeyboardControllerProxy* proxy)
  33       : proxy_(proxy) {}
  34   ~KeyboardContentsDelegate() override {}
  35
  36  private:
  37   // Overridden from content::WebContentsDelegate:
  38   content::WebContents* OpenURLFromTab(
  39       content::WebContents* source,
  40       const content::OpenURLParams& params) override {
  41     source->GetController().LoadURL(
  42         params.url, params.referrer, params.transition, params.extra_headers);
  43     Observe(source);
  44     return source;
  45   }
  46
  47   bool IsPopupOrPanel(const content::WebContents* source) const override {
  48     return true;
  49   }
  50
  51   void MoveContents(content::WebContents* source,
  52                     const gfx::Rect& pos) override {
  53     aura::Window* keyboard = proxy_->GetKeyboardWindow();
  54     // keyboard window must have been added to keyboard container window at this
  55     // point. Otherwise, wrong keyboard bounds is used and may cause problem as
  56     // described in crbug.com/367788.
  57     DCHECK(keyboard->parent());
  58     gfx::Rect bounds = keyboard->bounds();
  59     int new_height = pos.height();
  60     bounds.set_y(bounds.y() + bounds.height() - new_height);
  61     bounds.set_height(new_height);
  62     // Keyboard bounds should only be reset when it actually changes. Otherwise
  63     // it interrupts the initial animation of showing the keyboard. Described in
  64     // crbug.com/356753.
  65     if (bounds != keyboard->bounds())
  66       keyboard->SetBounds(bounds);
  67   }
  68
  69   // Overridden from content::WebContentsDelegate:
  70   void RequestMediaAccessPermission(
  71       content::WebContents* web_contents,
  72       const content::MediaStreamRequest& request,
  73       const content::MediaResponseCallback& callback) override {
  74     proxy_->RequestAudioInput(web_contents, request, callback);
  75   }
  76
  77   // Overridden from content::WebContentsObserver:
  78   void WebContentsDestroyed() override { delete this; }
  79
  80   keyboard::KeyboardControllerProxy* proxy_;
  81
  82   DISALLOW_COPY_AND_ASSIGN(KeyboardContentsDelegate);
  83 };
  84
  85 }  // namespace
  86
  87 namespace keyboard {
  88
  89 KeyboardControllerProxy::KeyboardControllerProxy(
  90     content::BrowserContext* context)
  91     : browser_context_(context), default_url_(kKeyboardURL) {
  92 }
  93
  94 KeyboardControllerProxy::~KeyboardControllerProxy() {
  95 }
  96
  97 const GURL& KeyboardControllerProxy::GetVirtualKeyboardUrl() {
  98   if (keyboard::IsInputViewEnabled()) {
  99     const GURL& override_url = GetOverrideContentUrl();
 100     return override_url.is_valid() ? override_url : default_url_;
 101   } else {
 102     return default_url_;
 103   }
 104 }
 105
 106 void KeyboardControllerProxy::LoadContents(const GURL& url) {
 107   if (keyboard_contents_) {
 108     content::OpenURLParams params(
 109         url,
 110         content::Referrer(),
 111         SINGLETON_TAB,
 112         ui::PAGE_TRANSITION_AUTO_TOPLEVEL,
 113         false);
 114     keyboard_contents_->OpenURL(params);
 115   }
 116 }
 117
 118 aura::Window* KeyboardControllerProxy::GetKeyboardWindow() {
 119   if (!keyboard_contents_) {
 120     content::BrowserContext* context = browser_context();
 121     keyboard_contents_.reset(content::WebContents::Create(
 122         content::WebContents::CreateParams(context,
 123             content::SiteInstance::CreateForURL(context,
 124                                                 GetVirtualKeyboardUrl()))));
 125     keyboard_contents_->SetDelegate(new KeyboardContentsDelegate(this));
 126     SetupWebContents(keyboard_contents_.get());
 127     LoadContents(GetVirtualKeyboardUrl());
 128     keyboard_contents_->GetNativeView()->AddObserver(this);
 129   }
 130
 131   return keyboard_contents_->GetNativeView();
 132 }
 133
 134 bool KeyboardControllerProxy::HasKeyboardWindow() const {
 135   return keyboard_contents_;
 136 }
 137
 138 void KeyboardControllerProxy::ShowKeyboardContainer(aura::Window* container) {
 139   GetKeyboardWindow()->Show();
 140   container->Show();
 141 }
 142
 143 void KeyboardControllerProxy::HideKeyboardContainer(aura::Window* container) {
 144   container->Hide();
 145   GetKeyboardWindow()->Hide();
 146 }
 147
 148 void KeyboardControllerProxy::SetUpdateInputType(ui::TextInputType type) {
 149 }
 150
 151 void KeyboardControllerProxy::EnsureCaretInWorkArea() {
 152   if (GetInputMethod()->GetTextInputClient()) {
 153     aura::Window* keyboard_window = GetKeyboardWindow();
 154     aura::Window* root_window = keyboard_window->GetRootWindow();
 155     gfx::Rect available_bounds = root_window->bounds();
 156     gfx::Rect keyboard_bounds = keyboard_window->bounds();
 157     available_bounds.set_height(available_bounds.height() -
 158         keyboard_bounds.height());
 159     GetInputMethod()->GetTextInputClient()->EnsureCaretInRect(available_bounds);
 160   }
 161 }
 162
 163 void KeyboardControllerProxy::LoadSystemKeyboard() {
 164   DCHECK(keyboard_contents_);
 165   if (keyboard_contents_->GetURL() != default_url_) {
 166     // TODO(bshe): The height of system virtual keyboard and IME virtual
 167     // keyboard may different. The height needs to be restored too.
 168     LoadContents(default_url_);
 169   }
 170 }
 171
 172 void KeyboardControllerProxy::ReloadKeyboardIfNeeded() {
 173   DCHECK(keyboard_contents_);
 174   if (keyboard_contents_->GetURL() != GetVirtualKeyboardUrl()) {
 175     if (keyboard_contents_->GetURL().GetOrigin() !=
 176         GetVirtualKeyboardUrl().GetOrigin()) {
 177       // Sets keyboard window height to 0 before navigate to a keyboard in a
 178       // different extension. This keeps the UX the same as Android.
 179       gfx::Rect bounds = GetKeyboardWindow()->bounds();
 180       bounds.set_y(bounds.y() + bounds.height());
 181       bounds.set_height(0);
 182       GetKeyboardWindow()->SetBounds(bounds);
 183     }
 184     LoadContents(GetVirtualKeyboardUrl());
 185   }
 186 }
 187
 188 void KeyboardControllerProxy::SetupWebContents(content::WebContents* contents) {
 189 }
 190
 191 void KeyboardControllerProxy::OnWindowBoundsChanged(
 192     aura::Window* window,
 193     const gfx::Rect& old_bounds,
 194     const gfx::Rect& new_bounds) {
 195   if (!shadow_) {
 196     shadow_.reset(new wm::Shadow());
 197     shadow_->Init(wm::Shadow::STYLE_ACTIVE);
 198     shadow_->layer()->SetVisible(true);
 199     DCHECK(keyboard_contents_->GetNativeView()->parent());
 200     keyboard_contents_->GetNativeView()->parent()->layer()->Add(
 201         shadow_->layer());
 202   }
 203
 204   shadow_->SetContentBounds(new_bounds);
 205 }
 206
 207 void KeyboardControllerProxy::OnWindowDestroyed(aura::Window* window) {
 208   window->RemoveObserver(this);
 209 }
 210
 211 }  // namespace keyboard