ash/app_list/views/search_box_view.h - chromium/src - Git at Google

 // 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 ASH_APP_LIST_VIEWS_SEARCH_BOX_VIEW_H_
 #define ASH_APP_LIST_VIEWS_SEARCH_BOX_VIEW_H_

 #include <vector>

 #include "ash/app_list/app_list_export.h"
 #include "ash/app_list/app_list_view_delegate.h"
 #include "ash/app_list/model/search/search_box_model_observer.h"
 #include "ash/public/cpp/app_list/app_list_types.h"
 #include "ui/chromeos/search_box/search_box_view_base.h"

 namespace views {
 class Textfield;
 class View;
 }  // namespace views

 namespace app_list {

 class AppListView;
 class AppListViewDelegate;
 class ContentsView;
 class SearchModel;

 // Subclass of search_box::SearchBoxViewBase. SearchBoxModel is its data model
 // that controls what icon to display, what placeholder text to use for
 // Textfield. The text and selection model part could be set to change the
 // contents and selection model of the Textfield.
 class APP_LIST_EXPORT SearchBoxView : public search_box::SearchBoxViewBase,
                                       public SearchBoxModelObserver {
  public:
   SearchBoxView(search_box::SearchBoxViewDelegate* delegate,
                 AppListViewDelegate* view_delegate,
                 AppListView* app_list_view = nullptr);
   ~SearchBoxView() override;

   void Init(bool is_tablet_mode);

   // Resets state of SearchBoxView so it can be reshown.
   void ResetForShow();

   // Returns the total focus ring spacing for use in folders.
   static int GetFocusRingSpacing();

   // Overridden from search_box::SearchBoxViewBase:
   void ClearSearch() override;
   views::View* GetSelectedViewInContentsView() override;
   void HandleSearchBoxEvent(ui::LocatedEvent* located_event) override;
   void ModelChanged() override;
   void UpdateKeyboardVisibility() override;
   void UpdateModel(bool initiated_by_user) override;
   void UpdateSearchIcon() override;
   void UpdateSearchBoxBorder() override;
   void SetupAssistantButton() override;
   void SetupCloseButton() override;
   void SetupBackButton() override;
   void RecordSearchBoxActivationHistogram(ui::EventType event_type) override;

   // Overridden from views::View:
   void OnKeyEvent(ui::KeyEvent* event) override;
   bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
   void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
   void OnPaintBackground(gfx::Canvas* canvas) override;
   const char* GetClassName() const override;

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

   // Updates the search box's background corner radius and color based on the
   // state of AppListModel.
   void UpdateBackground(double progress,
                         ash::AppListState current_state,
                         ash::AppListState target_state);

   // Updates the search box's layout based on the state of AppListModel.
   void UpdateLayout(double progress,
                     ash::AppListState current_state,
                     ash::AppListState target_state);

   // Returns background border corner radius in the given state.
   int GetSearchBoxBorderCornerRadiusForState(ash::AppListState state) const;

   // Returns background color for the given state.
   SkColor GetBackgroundColorForState(ash::AppListState state) const;

   // Updates the opacity of the searchbox.
   void UpdateOpacity();

   // Shows Zero State suggestions.
   void ShowZeroStateSuggestions();

   // Called when the wallpaper colors change.
   void OnWallpaperColorsChanged();

   // Sets the autocomplete text if autocomplete conditions are met.
   void ProcessAutocomplete();

   // Updates the search box with |new_query| and starts a new search.
   void UpdateQuery(const base::string16& new_query);

   // Clears the search query and de-activate the search box.
   void ClearSearchAndDeactivateSearchBox();

   void set_contents_view(ContentsView* contents_view) {
     contents_view_ = contents_view;
   }
   ContentsView* contents_view() { return contents_view_; }

   void set_highlight_range_for_test(const gfx::Range& range) {
     highlight_range_ = range;
   }

  private:
   // Notifies SearchBoxViewDelegate that the autocomplete text is valid.
   void AcceptAutocompleteText();

   // Returns true if there is currently an autocomplete suggestion in
   // search_box().
   bool HasAutocompleteText();

   // Removes all autocomplete text.
   void ClearAutocompleteText();

   // After verifying autocomplete text is valid, sets the current searchbox
   // text to the autocomplete text and sets the text highlight.
   void SetAutocompleteText(const base::string16& autocomplete_text);

   // Overridden from views::TextfieldController:
   void ContentsChanged(views::Textfield* sender,
                        const base::string16& new_contents) override;
   bool HandleKeyEvent(views::Textfield* sender,
                       const ui::KeyEvent& key_event) override;
   bool HandleMouseEvent(views::Textfield* sender,
                         const ui::MouseEvent& mouse_event) override;
   bool HandleGestureEvent(views::Textfield* sender,
                           const ui::GestureEvent& gesture_event) override;

   // Overridden from SearchBoxModelObserver:
   void HintTextChanged() override;
   void SelectionModelChanged() override;
   void Update() override;
   void SearchEngineChanged() override;
   void ShowAssistantChanged() override;

   // Returns true if the event to trigger autocomplete should be handled.
   bool ShouldProcessAutocomplete();

   // Clear highlight range.
   void ResetHighlightRange();

   // The range of highlighted text for autocomplete.
   gfx::Range highlight_range_;

   // The key most recently pressed.
   ui::KeyboardCode last_key_pressed_ = ui::VKEY_UNKNOWN;

   AppListViewDelegate* view_delegate_;   // Not owned.
   SearchModel* search_model_ = nullptr;  // Owned by the profile-keyed service.

   // Owned by views hierarchy.
   app_list::AppListView* app_list_view_;
   ContentsView* contents_view_ = nullptr;

   // True if app list search autocomplete is enabled.
   const bool is_app_list_search_autocomplete_enabled_;

   base::WeakPtrFactory<SearchBoxView> weak_ptr_factory_;

   DISALLOW_COPY_AND_ASSIGN(SearchBoxView);
 };

 }  // namespace app_list

 #endif  // ASH_APP_LIST_VIEWS_SEARCH_BOX_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 ASH_APP_LIST_VIEWS_SEARCH_BOX_VIEW_H_
	#define ASH_APP_LIST_VIEWS_SEARCH_BOX_VIEW_H_

	#include <vector>

	#include "ash/app_list/app_list_export.h"
	#include "ash/app_list/app_list_view_delegate.h"
	#include "ash/app_list/model/search/search_box_model_observer.h"
	#include "ash/public/cpp/app_list/app_list_types.h"
	#include "ui/chromeos/search_box/search_box_view_base.h"

	namespace views {
	class Textfield;
	class View;
	} // namespace views

	namespace app_list {

	class AppListView;
	class AppListViewDelegate;
	class ContentsView;
	class SearchModel;

	// Subclass of search_box::SearchBoxViewBase. SearchBoxModel is its data model
	// that controls what icon to display, what placeholder text to use for
	// Textfield. The text and selection model part could be set to change the
	// contents and selection model of the Textfield.
	class APP_LIST_EXPORT SearchBoxView : public search_box::SearchBoxViewBase,
	public SearchBoxModelObserver {
	public:
	SearchBoxView(search_box::SearchBoxViewDelegate* delegate,
	AppListViewDelegate* view_delegate,
	AppListView* app_list_view = nullptr);
	~SearchBoxView() override;

	void Init(bool is_tablet_mode);

	// Resets state of SearchBoxView so it can be reshown.
	void ResetForShow();

	// Returns the total focus ring spacing for use in folders.
	static int GetFocusRingSpacing();

	// Overridden from search_box::SearchBoxViewBase:
	void ClearSearch() override;
	views::View* GetSelectedViewInContentsView() override;
	void HandleSearchBoxEvent(ui::LocatedEvent* located_event) override;
	void ModelChanged() override;
	void UpdateKeyboardVisibility() override;
	void UpdateModel(bool initiated_by_user) override;
	void UpdateSearchIcon() override;
	void UpdateSearchBoxBorder() override;
	void SetupAssistantButton() override;
	void SetupCloseButton() override;
	void SetupBackButton() override;
	void RecordSearchBoxActivationHistogram(ui::EventType event_type) override;

	// Overridden from views::View:
	void OnKeyEvent(ui::KeyEvent* event) override;
	bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
	void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
	void OnPaintBackground(gfx::Canvas* canvas) override;
	const char* GetClassName() const override;

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

	// Updates the search box's background corner radius and color based on the
	// state of AppListModel.
	void UpdateBackground(double progress,
	ash::AppListState current_state,
	ash::AppListState target_state);

	// Updates the search box's layout based on the state of AppListModel.
	void UpdateLayout(double progress,
	ash::AppListState current_state,
	ash::AppListState target_state);

	// Returns background border corner radius in the given state.
	int GetSearchBoxBorderCornerRadiusForState(ash::AppListState state) const;

	// Returns background color for the given state.
	SkColor GetBackgroundColorForState(ash::AppListState state) const;

	// Updates the opacity of the searchbox.
	void UpdateOpacity();

	// Shows Zero State suggestions.
	void ShowZeroStateSuggestions();

	// Called when the wallpaper colors change.
	void OnWallpaperColorsChanged();

	// Sets the autocomplete text if autocomplete conditions are met.
	void ProcessAutocomplete();

	// Updates the search box with \|new_query\| and starts a new search.
	void UpdateQuery(const base::string16& new_query);

	// Clears the search query and de-activate the search box.
	void ClearSearchAndDeactivateSearchBox();

	void set_contents_view(ContentsView* contents_view) {
	contents_view_ = contents_view;
	}
	ContentsView* contents_view() { return contents_view_; }

	void set_highlight_range_for_test(const gfx::Range& range) {
	highlight_range_ = range;
	}

	private:
	// Notifies SearchBoxViewDelegate that the autocomplete text is valid.
	void AcceptAutocompleteText();

	// Returns true if there is currently an autocomplete suggestion in
	// search_box().
	bool HasAutocompleteText();

	// Removes all autocomplete text.
	void ClearAutocompleteText();

	// After verifying autocomplete text is valid, sets the current searchbox
	// text to the autocomplete text and sets the text highlight.
	void SetAutocompleteText(const base::string16& autocomplete_text);

	// Overridden from views::TextfieldController:
	void ContentsChanged(views::Textfield* sender,
	const base::string16& new_contents) override;
	bool HandleKeyEvent(views::Textfield* sender,
	const ui::KeyEvent& key_event) override;
	bool HandleMouseEvent(views::Textfield* sender,
	const ui::MouseEvent& mouse_event) override;
	bool HandleGestureEvent(views::Textfield* sender,
	const ui::GestureEvent& gesture_event) override;

	// Overridden from SearchBoxModelObserver:
	void HintTextChanged() override;
	void SelectionModelChanged() override;
	void Update() override;
	void SearchEngineChanged() override;
	void ShowAssistantChanged() override;

	// Returns true if the event to trigger autocomplete should be handled.
	bool ShouldProcessAutocomplete();

	// Clear highlight range.
	void ResetHighlightRange();

	// The range of highlighted text for autocomplete.
	gfx::Range highlight_range_;

	// The key most recently pressed.
	ui::KeyboardCode last_key_pressed_ = ui::VKEY_UNKNOWN;

	AppListViewDelegate* view_delegate_; // Not owned.
	SearchModel* search_model_ = nullptr; // Owned by the profile-keyed service.

	// Owned by views hierarchy.
	app_list::AppListView* app_list_view_;
	ContentsView* contents_view_ = nullptr;

	// True if app list search autocomplete is enabled.
	const bool is_app_list_search_autocomplete_enabled_;

	base::WeakPtrFactory<SearchBoxView> weak_ptr_factory_;

	DISALLOW_COPY_AND_ASSIGN(SearchBoxView);
	};

	} // namespace app_list

	#endif // ASH_APP_LIST_VIEWS_SEARCH_BOX_VIEW_H_