// 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.

#import "chrome/browser/cocoa/chrome_event_processing_window.h"

#include "base/logging.h"
#import "chrome/browser/cocoa/browser_window_controller.h"
#import "chrome/browser/cocoa/browser_frame_view.h"
#import "chrome/browser/cocoa/tab_strip_controller.h"
#import "chrome/browser/renderer_host/render_widget_host_view_mac.h"
#include "chrome/browser/global_keyboard_shortcuts_mac.h"

typedef int (*KeyToCommandMapper)(bool, bool, bool, int);

@implementation ChromeEventProcessingWindow

- (BOOL)handleExtraKeyboardShortcut:(NSEvent*)event fromTable:
    (KeyToCommandMapper)commandForKeyboardShortcut {
  // Extract info from |event|.
  NSUInteger modifers = [event modifierFlags];
  const bool cmdKey = modifers & NSCommandKeyMask;
  const bool shiftKey = modifers & NSShiftKeyMask;
  const bool cntrlKey = modifers & NSControlKeyMask;
  const int keyCode = [event keyCode];

  int cmdNum = commandForKeyboardShortcut(cmdKey, shiftKey, cntrlKey,
      keyCode);

  BrowserWindowController* controller =
      (BrowserWindowController*)[self delegate];
  // A bit of sanity.
  DCHECK([controller isKindOfClass:[BrowserWindowController class]]);
  DCHECK([controller respondsToSelector:@selector(executeCommand:)]);

  if (cmdNum != -1) {
    [controller executeCommand:cmdNum];
    return YES;
  }
  return NO;
}

- (BOOL)handleExtraWindowKeyboardShortcut:(NSEvent*)event {
  return [self handleExtraKeyboardShortcut:event
                                 fromTable:CommandForWindowKeyboardShortcut];
}

- (BOOL)handleExtraBrowserKeyboardShortcut:(NSEvent*)event {
  return [self handleExtraKeyboardShortcut:event
                                 fromTable:CommandForBrowserKeyboardShortcut];
}

- (BOOL)performKeyEquivalent:(NSEvent*)event {
  // Give the web site a chance to handle the event. If it doesn't want to
  // handle it, it will call us back with one of the |handle*| methods above.
  NSResponder* r = [self firstResponder];
  if ([r isKindOfClass:[RenderWidgetHostViewCocoa class]])
    return [r performKeyEquivalent:event];

  // Handle per-window shortcuts like cmd-1, but do not handle browser-level
  // shortcuts like cmd-left (else, cmd-left would do history navigation even
  // if e.g. the Omnibox has focus).
  if ([self handleExtraWindowKeyboardShortcut:event])
    return YES;
  return [super performKeyEquivalent:event];
}

@end  // ChromeEventProcessingWindow