chrome/browser/ui/views/location_bar/location_bar_view.h

// Copyright (c) 2012 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.

#ifndef CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_
#define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_

#include <stddef.h>

#include <memory>
#include <string>
#include <vector>

#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/extensions/extension_context_menu_model.h"
#include "chrome/browser/ui/location_bar/location_bar.h"
#include "chrome/browser/ui/omnibox/chrome_omnibox_edit_controller.h"
#include "chrome/browser/ui/page_action/page_action_icon_type.h"
#include "chrome/browser/ui/views/dropdown_bar_host.h"
#include "chrome/browser/ui/views/dropdown_bar_host_delegate.h"
#include "chrome/browser/ui/views/extensions/extension_popup.h"
#include "chrome/browser/ui/views/location_bar/content_setting_image_view.h"
#include "chrome/browser/ui/views/location_bar/location_icon_view.h"
#include "chrome/browser/ui/views/omnibox/omnibox_view_views.h"
#include "chrome/browser/ui/views/page_action/page_action_icon_view.h"
#include "components/security_state/core/security_state.h"
#include "ui/base/pointer/touch_ui_controller.h"
#include "ui/gfx/animation/slide_animation.h"
#include "ui/gfx/font.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/image/image.h"
#include "ui/views/animation/animation_delegate_views.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/controls/focus_ring.h"
#include "ui/views/drag_controller.h"

class CommandUpdater;
class ContentSettingBubbleModelDelegate;
class GURL;
class KeywordHintView;
class LocationIconView;
enum class OmniboxPart;
class OmniboxPopupView;
class PageActionIconController;
class PageActionIconContainerView;
class Profile;
class SelectedKeywordView;

namespace views {
class ImageButton;
class Label;
}  // namespace views

/////////////////////////////////////////////////////////////////////////////
//
// LocationBarView class
//
//   The LocationBarView class is a View subclass that paints the background
//   of the URL bar strip and contains its content.
//
/////////////////////////////////////////////////////////////////////////////
class LocationBarView : public LocationBar,
                        public LocationBarTesting,
                        public views::View,
                        public views::DragController,
                        public views::AnimationDelegateViews,
                        public ChromeOmniboxEditController,
                        public DropdownBarHostDelegate,
                        public views::ButtonListener,
                        public IconLabelBubbleView::Delegate,
                        public LocationIconView::Delegate,
                        public ContentSettingImageView::Delegate,
                        public PageActionIconView::Delegate {
 public:
  class Delegate {
   public:
    // Should return the current web contents.
    virtual content::WebContents* GetWebContents() = 0;

    virtual LocationBarModel* GetLocationBarModel() = 0;
    virtual const LocationBarModel* GetLocationBarModel() const = 0;

    // Returns ContentSettingBubbleModelDelegate.
    virtual ContentSettingBubbleModelDelegate*
    GetContentSettingBubbleModelDelegate() = 0;

   protected:
    virtual ~Delegate() {}
  };

  // The location bar view's class name.
  static const char kViewClassName[];

  LocationBarView(Browser* browser,
                  Profile* profile,
                  CommandUpdater* command_updater,
                  Delegate* delegate,
                  bool is_popup_mode);

  ~LocationBarView() override;

  // Returns the location bar border radius in DIPs.
  int GetBorderRadius() const;

  // Initializes the LocationBarView.
  void Init();

  // True if this instance has been initialized by calling Init, which can only
  // be called when the receiving instance is attached to a view container.
  bool IsInitialized() const;

  // Helper to get the color for |part| using the current ThemeProvider.
  SkColor GetColor(OmniboxPart part) const;

  // Returns the location bar border color blended with the toolbar color.
  // It's guaranteed to be opaque.
  SkColor GetOpaqueBorderColor() const;

  // Returns a background that paints an (optionally stroked) rounded rect with
  // the given color.
  std::unique_ptr<views::Background> CreateRoundRectBackground(
      SkColor background_color,
      SkColor stroke_color,
      SkBlendMode blend_mode = SkBlendMode::kSrcOver,
      bool antialias = true) const;

  // Returns the delegate.
  Delegate* delegate() const { return delegate_; }

  PageActionIconController* page_action_icon_controller() {
    return page_action_icon_controller_;
  }

  // Returns the screen coordinates of the omnibox (where the URL text appears,
  // not where the icons are shown).
  gfx::Point GetOmniboxViewOrigin() const;

  // Shows |text| as an inline autocompletion.  This is useful for IMEs, where
  // we can't show the autocompletion inside the actual OmniboxView.  See
  // comments on |ime_inline_autocomplete_view_|.
  void SetImeInlineAutocompletion(const base::string16& text);

  // Select all of the text. Needed when the user tabs through controls
  // in the toolbar in full keyboard accessibility mode.
  virtual void SelectAll();

  LocationIconView* location_icon_view() { return location_icon_view_; }

  SelectedKeywordView* selected_keyword_view() {
    return selected_keyword_view_;
  }

  OmniboxViewViews* omnibox_view() { return omnibox_view_; }
  const OmniboxViewViews* omnibox_view() const { return omnibox_view_; }

  // Updates the controller, and, if |contents| is non-null, restores saved
  // state that the tab holds.
  void Update(const content::WebContents* contents);

  // Clears the location bar's state for |contents|.
  void ResetTabState(content::WebContents* contents);

  // Activates the first visible but inactive PageActionIconView for
  // accessibility.
  bool ActivateFirstInactiveBubbleForAccessibility();

  // LocationBar:
  void FocusLocation(bool is_user_initiated) override;
  void Revert() override;
  OmniboxView* GetOmniboxView() override;

  // views::View:
  bool HasFocus() const override;
  void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
  gfx::Size GetMinimumSize() const override;
  gfx::Size CalculatePreferredSize() const override;
  void Layout() override;
  void OnThemeChanged() override;
  void ChildPreferredSizeChanged(views::View* child) override;

  // ChromeOmniboxEditController:
  void UpdateWithoutTabRestore() override;
  LocationBarModel* GetLocationBarModel() override;
  content::WebContents* GetWebContents() override;

  // IconLabelBubbleView::Delegate:
  SkColor GetIconLabelBubbleSurroundingForegroundColor() const override;
  SkColor GetIconLabelBubbleBackgroundColor() const override;

  // ContentSettingImageView::Delegate:
  content::WebContents* GetContentSettingWebContents() override;
  ContentSettingBubbleModelDelegate* GetContentSettingBubbleModelDelegate()
      override;

  // views::ButtonListener:
  void ButtonPressed(views::Button* sender, const ui::Event& event) override;

  static bool IsVirtualKeyboardVisible(views::Widget* widget);

  // Returns the height available for user-entered text in the location bar.
  static int GetAvailableTextHeight();

  // Returns the height available for text within location bar decorations.
  static int GetAvailableDecorationTextHeight();

  void OnOmniboxFocused();
  void OnOmniboxBlurred();

  // Called when omnibox view receives mouse notifications relevant to hover.
  // |is_hovering| should be true when mouse is in omnibox; false when exited.
  void OnOmniboxHovered(bool is_hovering);

  Browser* browser() { return browser_; }
  Profile* profile() { return profile_; }

  // LocationIconView::Delegate:
  bool IsEditingOrEmpty() const override;
  void OnLocationIconPressed(const ui::MouseEvent& event) override;
  void OnLocationIconDragged(const ui::MouseEvent& event) override;
  bool ShowPageInfoDialog() override;
  SkColor GetSecurityChipColor(
      security_state::SecurityLevel security_level) const override;
  gfx::ImageSkia GetLocationIcon(LocationIconView::Delegate::IconFetchedCallback
                                     on_icon_fetched) const override;

 private:
  FRIEND_TEST_ALL_PREFIXES(SecurityIndicatorTest, CheckIndicatorText);
  FRIEND_TEST_ALL_PREFIXES(TouchLocationBarViewBrowserTest,
                           OmniboxViewViewsSize);
  FRIEND_TEST_ALL_PREFIXES(TouchLocationBarViewBrowserTest,
                           IMEInlineAutocompletePosition);
  using ContentSettingViews = std::vector<ContentSettingImageView*>;

  // Returns the amount of space required to the left of the omnibox text.
  int GetMinimumLeadingWidth() const;

  // Returns the amount of space required to the right of the omnibox text.
  int GetMinimumTrailingWidth() const;

  // The border color, drawn on top of the toolbar.
  SkColor GetBorderColor() const;

  // The LocationBarView bounds, without the ends which have a border radius.
  // E.g., if the LocationBarView was 50dip long, and the border radius was 2,
  // this method would return a gfx::Rect with 46dip width.
  gfx::Rect GetLocalBoundsWithoutEndcaps() const;

  // Updates the background on a theme change, or dropdown state change.
  void RefreshBackground();

  // Updates the visibility state of the Content Blocked icons to reflect what
  // is actually blocked on the current page. Returns true if the visibility
  // of at least one of the views in |content_setting_views_| changed.
  bool RefreshContentSettingViews();

  // Updates the visibility state of the PageActionIconViews to reflect what
  // actions are available on the current page.
  void RefreshPageActionIconViews();

  // Updates the color of the icon for the "clear all" button.
  void RefreshClearAllButtonIcon();

  // Returns true if a keyword is selected in the model.
  bool ShouldShowKeywordBubble() const;

  // Gets the OmniboxPopupView associated with the model in |omnibox_view_|.
  OmniboxPopupView* GetOmniboxPopupView();

  // Called when the page info bubble is closed.
  void OnPageInfoBubbleClosed(views::Widget::ClosedReason closed_reason,
                              bool reload_prompt);

  // LocationBar:
  GURL GetDestinationURL() const override;
  WindowOpenDisposition GetWindowOpenDisposition() const override;
  ui::PageTransition GetPageTransition() const override;
  base::TimeTicks GetMatchSelectionTimestamp() const override;
  void AcceptInput() override;
  void AcceptInput(base::TimeTicks match_selection_timestamp) override;
  void FocusSearch() override;
  void UpdateContentSettingsIcons() override;
  void SaveStateToContents(content::WebContents* contents) override;
  const OmniboxView* GetOmniboxView() const override;
  LocationBarTesting* GetLocationBarForTesting() override;

  // LocationBarTesting:
  bool TestContentSettingImagePressed(size_t index) override;
  bool IsContentSettingBubbleShowing(size_t index) override;

  // views::View:
  const char* GetClassName() const override;
  void OnBoundsChanged(const gfx::Rect& previous_bounds) override;
  bool GetNeedsNotificationWhenVisibleBoundsChange() const override;
  void OnVisibleBoundsChanged() override;
  void OnFocus() override;
  void OnPaintBorder(gfx::Canvas* canvas) override;

  // views::DragController:
  void WriteDragDataForView(View* sender,
                            const gfx::Point& press_pt,
                            OSExchangeData* data) override;
  int GetDragOperationsForView(View* sender, const gfx::Point& p) override;
  bool CanStartDragForView(View* sender,
                           const gfx::Point& press_pt,
                           const gfx::Point& p) override;

  // PageActionIconView::Delegate:
  content::WebContents* GetWebContentsForPageActionIconView() override;
  bool IsLocationBarUserInputInProgress() const override;

  // views::AnimationDelegateViews:
  void AnimationProgressed(const gfx::Animation* animation) override;
  void AnimationEnded(const gfx::Animation* animation) override;
  void AnimationCanceled(const gfx::Animation* animation) override;

  // ChromeOmniboxEditController:
  void OnChanged() override;
  void OnPopupVisibilityChanged() override;
  const LocationBarModel* GetLocationBarModel() const override;

  // DropdownBarHostDelegate:
  void FocusAndSelectAll() override;

  void OnTouchUiChanged();

  // Called with an async fetched for the keyword view.
  void OnKeywordFaviconFetched(const gfx::Image& icon);

  // Updates the visibility of the send tab to self icon.
  bool UpdateSendTabToSelfIcon();

  // The Browser this LocationBarView is in.  Note that at least
  // chromeos::SimpleWebViewDialog uses a LocationBarView outside any browser
  // window, so this may be NULL.
  Browser* const browser_;

  // May be nullptr in tests.
  Profile* const profile_;

  OmniboxViewViews* omnibox_view_ = nullptr;

  // Our delegate.
  Delegate* delegate_;

  // An icon to the left of the edit field: the HTTPS lock, blank page icon,
  // search icon, EV HTTPS bubble, etc.
  LocationIconView* location_icon_view_ = nullptr;

  // A view to show inline autocompletion when an IME is active.  In this case,
  // we shouldn't change the text or selection inside the OmniboxView itself,
  // since this will conflict with the IME's control over the text.  So instead
  // we show any autocompletion in a separate field after the OmniboxView.
  views::Label* ime_inline_autocomplete_view_ = nullptr;

  // The following views are used to provide hints and remind the user as to
  // what is going in the edit. They are all added a children of the
  // LocationBarView. At most one is visible at a time. Preference is
  // given to the keyword_view_, then hint_view_.
  // These autocollapse when the edit needs the room.

  // Shown if the user has selected a keyword.
  SelectedKeywordView* selected_keyword_view_ = nullptr;

  // Shown if the selected url has a corresponding keyword.
  KeywordHintView* keyword_hint_view_ = nullptr;

  // The content setting views.
  ContentSettingViews content_setting_views_;

  // The controller for page action icons.
  PageActionIconController* page_action_icon_controller_ = nullptr;

  // The container for page action icons.
  PageActionIconContainerView* page_action_icon_container_ = nullptr;

  // An [x] that appears in touch mode (when the OSK is visible) and allows the
  // user to clear all text.
  views::ImageButton* clear_all_button_ = nullptr;

  // Animation to change whole location bar background color on hover.
  gfx::SlideAnimation hover_animation_{this};

  // Whether we're in popup mode. This value also controls whether the location
  // bar is read-only.
  const bool is_popup_mode_;

  // The focus ring, if one is in use.
  std::unique_ptr<views::FocusRing> focus_ring_;

  bool is_initialized_ = false;

  std::unique_ptr<ui::TouchUiController::Subscription> subscription_ =
      ui::TouchUiController::Get()->RegisterCallback(
          base::BindRepeating(&LocationBarView::OnTouchUiChanged,
                              base::Unretained(this)));

  base::WeakPtrFactory<LocationBarView> weak_factory_{this};

  DISALLOW_COPY_AND_ASSIGN(LocationBarView);
};

#endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_