Upstream Chrome on iOS source code [6/11].

ios/chrome/browser/ui/omnibox/location_bar_view_ios.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 IOS_CHROME_BROWSER_UI_OMNIBOX_LOCATION_BAR_VIEW_IOS_H_
+#define IOS_CHROME_BROWSER_UI_OMNIBOX_LOCATION_BAR_VIEW_IOS_H_
+
+#include <UIKit/UIKit.h>
+
+#include <memory>
+
+#include "base/mac/scoped_nsobject.h"
+#include "base/strings/utf_string_conversions.h"
+#include "components/omnibox/browser/omnibox_view.h"
+#include "ios/chrome/browser/ui/omnibox/web_omnibox_edit_controller.h"
+#include "ui/base/page_transition_types.h"
+#include "url/gurl.h"
+
+namespace ios {
+class ChromeBrowserState;
+}
+
+namespace web {
+class WebState;
+}
+
+class OmniboxViewIOS;
+@class OmniboxClearButtonBridge;
+@protocol OmniboxPopupPositioner;
+@class OmniboxTextFieldIOS;
+@protocol PreloadProvider;
+class ToolbarModel;
+
+// Delegate for LocationBarViewIOS objects.  Used to provide the location bar a
+// way to open URLs and otherwise interact with the browser.
+@protocol LocationBarDelegate
+- (void)loadGURLFromLocationBar:(const GURL&)url
+                     transition:(ui::PageTransition)transition;
+- (void)locationBarHasBecomeFirstResponder;
+- (void)locationBarHasResignedFirstResponder;
+- (void)locationBarBeganEdit;
+- (void)locationBarChanged;
+- (web::WebState*)getWebState;
+- (ToolbarModel*)toolbarModel;
+@end
+
+// C++ object that wraps an OmniboxViewIOS and serves as its
+// OmniboxEditController.  LocationBarViewIOS bridges between the edit view
+// and the rest of the browser and manages text field decorations (location
+// icon, security icon, etc.).
+class LocationBarViewIOS : public WebOmniboxEditController {
+ public:
+  LocationBarViewIOS(OmniboxTextFieldIOS* field,
+                     ios::ChromeBrowserState* browser_state,
+                     id<PreloadProvider> preloader,
+                     id<OmniboxPopupPositioner> positioner,
+                     id<LocationBarDelegate> delegate);
+  ~LocationBarViewIOS() override;
+
+  // OmniboxEditController implementation
+  void OnAutocompleteAccept(const GURL& url,
+                            WindowOpenDisposition disposition,
+                            ui::PageTransition transition,
+                            AutocompleteMatchType::Type type) override;
+  void OnChanged() override;
+  void OnInputInProgress(bool in_progress) override;
+  void OnSetFocus() override;
+  ToolbarModel* GetToolbarModel() override;
+  const ToolbarModel* GetToolbarModel() const override;
+
+  // WebOmniboxEditController implementation.
+  web::WebState* GetWebState() override;
+  void OnKillFocus() override;
+
+  // Called when toolbar state is updated.
+  void OnToolbarUpdated();
+
+  // Resign omnibox first responder and end edit view editing.
+  void HideKeyboardAndEndEditing();
+
+  // Tells the omnibox if it can show the hint text or not.
+  void SetShouldShowHintText(bool show_hint_text);
+
+  // Returns a pointer to the text entry view.
+  const OmniboxView* GetLocationEntry() const;
+  OmniboxView* GetLocationEntry();
+
+  // True if the omnibox text field is showing a placeholder image in its left
+  // view while it's collapsed (i.e. not in editing mode).
+  bool IsShowingPlaceholderWhileCollapsed();
+
+ private:
+  // Installs a UIButton that serves as the location icon and lock icon.  This
+  // button is installed as a left view of |field_|.
+  void InstallLocationIcon();
+
+  // Creates and installs the voice search UIButton as a right view of |field_|.
+  // Does nothing on tablet.
+  void InstallVoiceSearchIcon();
+
+  // Creates the clear text UIButton to be used as a right view of |field_|.
+  void CreateClearTextIcon(bool is_incognito);
+
+  // Updates the view to show the appropriate button (e.g. clear text or voice
+  // search) on the right side of |field_|.
+  void UpdateRightDecorations();
+
+  bool show_hint_text_;
+  base::scoped_nsobject<UIButton> clear_text_button_;
+  std::unique_ptr<OmniboxViewIOS> edit_view_;
+  base::scoped_nsobject<OmniboxClearButtonBridge> clear_button_bridge_;
+  OmniboxTextFieldIOS* field_;
+  id<LocationBarDelegate> delegate_;
+  bool is_showing_placeholder_while_collapsed_;
+};
+
+#endif  // IOS_CHROME_BROWSER_UI_OMNIBOX_LOCATION_BAR_VIEW_IOS_H_