cocoa/infobars: Split infobar_controller.* into smaller parts.

chrome/browser/ui/cocoa/infobars/alternate_nav_infobar_controller.mm

+// Copyright 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.
+
+#import "chrome/browser/ui/cocoa/infobars/alternate_nav_infobar_controller.h"
+
+#include "base/logging.h"
+#include "base/sys_string_conversions.h"
+#include "chrome/browser/infobars/alternate_nav_infobar_delegate.h"
+#import "chrome/browser/ui/cocoa/hyperlink_text_view.h"
+#include "chrome/browser/ui/cocoa/event_utils.h"
+#include "chrome/browser/ui/cocoa/infobars/infobar.h"
+#include "webkit/glue/window_open_disposition.h"
+
+@implementation AlternateNavInfoBarController
+
+// Link infobars have a text message, of which part is linkified.  We
+// use an NSAttributedString to display styled text, and we set a
+// NSLink attribute on the hyperlink portion of the message.  Infobars
+// use a custom NSTextField subclass, which allows us to override
+// textView:clickedOnLink:atIndex: and intercept clicks.
+//
+- (void)addAdditionalControls {
+  // No buttons.
+  [self removeButtons];
+
+  AlternateNavInfoBarDelegate* delegate =
+      delegate_->AsAlternateNavInfoBarDelegate();
+  DCHECK(delegate);
+  size_t offset = string16::npos;
+  string16 message = delegate->GetMessageTextWithOffset(&offset);
+  string16 link = delegate->GetLinkText();
+  NSFont* font = [NSFont labelFontOfSize:
+                  [NSFont systemFontSizeForControlSize:NSRegularControlSize]];
+  HyperlinkTextView* view = (HyperlinkTextView*)label_.get();
+  [view setMessageAndLink:base::SysUTF16ToNSString(message)
+                 withLink:base::SysUTF16ToNSString(link)
+                 atOffset:offset
+                     font:font
+             messageColor:[NSColor blackColor]
+                linkColor:[NSColor blueColor]];
+}
+
+// Called when someone clicks on the link in the infobar.  This method
+// is called by the InfobarTextField on its delegate (the
+// AlternateNavInfoBarController).
+- (void)linkClicked {
+  if (![self isOwned])
+    return;
+  WindowOpenDisposition disposition =
+      event_utils::WindowOpenDispositionFromNSEvent([NSApp currentEvent]);
+  if (delegate_->AsAlternateNavInfoBarDelegate()->LinkClicked(disposition))
+    [self removeSelf];
+}
+
+@end
+
+InfoBar* AlternateNavInfoBarDelegate::CreateInfoBar(InfoBarService* owner) {
+  AlternateNavInfoBarController* controller =
+      [[AlternateNavInfoBarController alloc] initWithDelegate:this owner:owner];
+  return new InfoBar(controller, this);
+}