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#import <Cocoa/Cocoa.h>
#include "renderer/renderer_command.pb.h"

namespace mozc {
namespace client {
class SendCommandInterface;
}  // namespace mozc::client

namespace renderer {
class TableLayout;
class RendererStyle;
}  // namespace mozc::renderer
}  // namespace mozc

// usage type for each column.
enum COLUMN_TYPE {
  COLUMN_SHORTCUT = 0,  // show shortcut key
  COLUMN_GAP1,          // padding region 1
  COLUMN_CANDIDATE,     // show candidate string
  COLUMN_DESCRIPTION,   // show description message
  NUMBER_OF_COLUMNS,    // number of columns. (this item should be last)
};

// CandidateView is an NSView subclass to draw the candidate window
// according to the current candidates.
@interface CandidateView : NSView {
 @private
  mozc::commands::Candidates candidates_;
  mozc::renderer::TableLayout *tableLayout_;
  const mozc::renderer::RendererStyle *style_;

  // The row which has focused background.
  int focusedRow_;

  // Cache of attributed strings which is allocated at updateLayout.
  NSArray *candidateStringsCache_;

  // |command_sender_| holds a callback for mouse clicks.
  mozc::client::SendCommandInterface *command_sender_;
}

// setCandidates: sets the candidates to be rendered.
- (void)setCandidates:(const mozc::commands::Candidates *)candidates;

// setController: sets the reference of GoogleJapaneseInputController.
// It will be used when mouse clicks.  It doesn't take ownerships of
// |controller|.
- (void)setSendCommandInterface:
    (mozc::client::SendCommandInterface *)command_sender;

// Checks the |candidates_| and recalculates the layout using |tableLayout_|.
// It also returns the size which is necessary to draw all GUI elements.
- (NSSize)updateLayout;

// Returns the table layout of the current candidates.
- (const mozc::renderer::TableLayout *)tableLayout;
@end