// Copyright (c) 2009 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_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_MAC_H_
#define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_MAC_H_

#import <Cocoa/Cocoa.h>

#include "base/basictypes.h"
#include "base/scoped_nsobject.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/autocomplete/autocomplete.h"
#include "chrome/browser/autocomplete/autocomplete_edit_view.h"
#include "chrome/browser/toolbar_model.h"
#include "chrome/common/page_transition_types.h"
#include "webkit/glue/window_open_disposition.h"

class AutocompleteEditController;
@class AutocompleteEditHelper;
class AutocompleteEditModel;
class AutocompletePopupViewMac;
class CommandUpdater;
class Profile;
class TabContents;
class ToolbarModel;

// Implements AutocompleteEditView on an NSTextField.

class AutocompleteEditViewMac : public AutocompleteEditView {
 public:
  AutocompleteEditViewMac(AutocompleteEditController* controller,
                          ToolbarModel* toolbar_model,
                          Profile* profile,
                          CommandUpdater* command_updater,
                          NSTextField* field);
  virtual ~AutocompleteEditViewMac();

  // Implement the AutocompleteEditView interface.
  // TODO(shess): See if this couldn't be simplified to:
  //    virtual AEM* model() const { ... }
  virtual AutocompleteEditModel* model() { return model_.get(); }
  virtual const AutocompleteEditModel* model() const { return model_.get(); }

  virtual void SaveStateToTab(TabContents* tab);
  virtual void Update(const TabContents* tab_for_state_restoring) {
    NOTIMPLEMENTED();
  }

  virtual void OpenURL(const GURL& url,
                       WindowOpenDisposition disposition,
                       PageTransition::Type transition,
                       const GURL& alternate_nav_url,
                       size_t selected_line,
                       const std::wstring& keyword);

  virtual std::wstring GetText() const;
  virtual void SetUserText(const std::wstring& text) { NOTIMPLEMENTED(); }
  virtual void SetUserText(const std::wstring& text,
                           const std::wstring& display_text,
                           bool update_popup) { NOTIMPLEMENTED(); }

  virtual void SetWindowTextAndCaretPos(const std::wstring& text,
                                        size_t caret_pos);

  virtual bool IsSelectAll() {
    NOTIMPLEMENTED();
    return false;
  }

  virtual void SelectAll(bool reversed);
  virtual void RevertAll();
  virtual void UpdatePopup();
  virtual void ClosePopup();
  void UpdateAndStyleText(const std::wstring& display_text,
                          size_t user_text_length);
  virtual void OnTemporaryTextMaybeChanged(const std::wstring& display_text,
                                           bool save_original_selection);
  virtual bool OnInlineAutocompleteTextMaybeChanged(
      const std::wstring& display_text, size_t user_text_length);
  virtual void OnRevertTemporaryText();
  virtual void OnBeforePossibleChange();
  virtual bool OnAfterPossibleChange();

  // Helper functions which forward to our private: model_.
  void OnUpOrDownKeyPressed(int dir);
  void OnEscapeKeyPressed();
  void OnSetFocus(bool f);
  void OnKillFocus();
  void AcceptInput(WindowOpenDisposition disposition, bool for_drop);

  // Helper for LocationBarBridge.
  void FocusLocation();

 private:
  // Returns the field's currently selected range.  Only valid if the
  // field has focus.
  NSRange GetSelectedRange() const;

  scoped_ptr<AutocompleteEditModel> model_;
  scoped_ptr<AutocompletePopupViewMac> popup_view_;

  AutocompleteEditController* controller_;
  ToolbarModel* toolbar_model_;

  // The object that handles additional command functionality exposed on the
  // edit, such as invoking the keyword editor.
  CommandUpdater* command_updater_;

  NSTextField* field_;  // owned by tab controller

  // Objective-C object to bridge field_ delegate calls to C++.
  scoped_nsobject<AutocompleteEditHelper> edit_helper_;

  std::wstring saved_temporary_text_;

  // Tracking state before and after a possible change for reporting
  // to model_.
  NSRange selection_before_change_;
  std::wstring text_before_change_;

  DISALLOW_COPY_AND_ASSIGN(AutocompleteEditViewMac);
};

#endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_MAC_H_