[Smart Lock, ios] Introduce ability to have a link in ConfirmInfobar title.

Google Smart Lock in save passwords infobar should be a link to help
center article about Smart Lock for passwords. This CL adds ability
to ConfirmInfobar to contain a link in title.

BUG=493276

Review URL: https://codereview.chromium.org/1156833005

Cr-Commit-Position: refs/heads/master@{#333461}

1 files changed, 52 insertions, 16 deletions

diff --git a/ios/chrome/browser/infobars/confirm_infobar_controller.mm b/ios/chrome/browser/infobars/confirm_infobar_controller.mm
index 1727876..9e93848 100644
--- a/ios/chrome/browser/infobars/confirm_infobar_controller.mm
+++ b/ios/chrome/browser/infobars/confirm_infobar_controller.mm
@@ -5,17 +5,20 @@
 #include "ios/chrome/browser/infobars/confirm_infobar_controller.h"
 
 #include "base/mac/foundation_util.h"
+#include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #import "ios/public/provider/chrome/browser/ui/infobar_view_delegate.h"
 #import "ios/public/provider/chrome/browser/ui/infobar_view_protocol.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/window_open_disposition.h"
 #include "ui/gfx/image/image.h"
 
 namespace {
 
-// UI Tags for the infobar buttons
-enum ConfirmInfoBarUITags { OK = 1, CANCEL, CLOSE };
+// UI Tags for the infobar elements.
+enum ConfirmInfoBarUITags { OK = 1, CANCEL, CLOSE, TITLE_LINK };
 
 // Converts a UI button tag to the corresponding InfoBarButton.
 ConfirmInfoBarDelegate::InfoBarButton UITagToButton(NSUInteger tag) {
@@ -39,10 +42,13 @@ ConfirmInfoBarDelegate::InfoBarButton UITagToButton(NSUInteger tag) {
 
 // Action for any of the user defined buttons.
 - (void)infoBarButtonDidPress:(id)sender;
-
+// Action for any of the user defined links.
+- (void)infobarLinkDidPress:(NSNumber*)tag;
+- (void)updateInfobarLabel:(UIView<InfoBarViewProtocol>*)view;
 @end
 
 @implementation ConfirmInfoBarController {
+  __weak ConfirmInfoBarDelegate* confirmInfobarDelegate_;
 }
 
 #pragma mark -
@@ -52,24 +58,22 @@ ConfirmInfoBarDelegate::InfoBarButton UITagToButton(NSUInteger tag) {
     viewForDelegate:(infobars::InfoBarDelegate*)delegate
               frame:(CGRect)frame {
   base::scoped_nsobject<UIView<InfoBarViewProtocol>> infoBarView;
-  ConfirmInfoBarDelegate* infoBarModel = delegate->AsConfirmInfoBarDelegate();
+  confirmInfobarDelegate_ = delegate->AsConfirmInfoBarDelegate();
   infoBarView.reset(
       ios::GetChromeBrowserProvider()->CreateInfoBarView(frame, self.delegate));
   // Model data.
-  NSString* modelMsg = nil;
-  if (infoBarModel->GetMessageText().length())
-    modelMsg = base::SysUTF16ToNSString(infoBarModel->GetMessageText());
-  gfx::Image modelIcon = infoBarModel->GetIcon();
-  int buttons = infoBarModel->GetButtons();
+  gfx::Image modelIcon = confirmInfobarDelegate_->GetIcon();
+  int buttons = confirmInfobarDelegate_->GetButtons();
   NSString* buttonOK = nil;
   if (buttons & ConfirmInfoBarDelegate::BUTTON_OK) {
-    buttonOK = base::SysUTF16ToNSString(
-        infoBarModel->GetButtonLabel(ConfirmInfoBarDelegate::BUTTON_OK));
+    buttonOK = base::SysUTF16ToNSString(confirmInfobarDelegate_->GetButtonLabel(
+        ConfirmInfoBarDelegate::BUTTON_OK));
   }
   NSString* buttonCancel = nil;
   if (buttons & ConfirmInfoBarDelegate::BUTTON_CANCEL) {
-    buttonCancel = base::SysUTF16ToNSString(
-        infoBarModel->GetButtonLabel(ConfirmInfoBarDelegate::BUTTON_CANCEL));
+    buttonCancel =
+        base::SysUTF16ToNSString(confirmInfobarDelegate_->GetButtonLabel(
+            ConfirmInfoBarDelegate::BUTTON_CANCEL));
   }
 
   [infoBarView addCloseButtonWithTag:ConfirmInfoBarUITags::CLOSE
@@ -81,8 +85,7 @@ ConfirmInfoBarDelegate::InfoBarButton UITagToButton(NSUInteger tag) {
     [infoBarView addLeftIcon:modelIcon.ToUIImage()];
 
   // Optional message.
-  if (modelMsg)
-    [infoBarView addLabel:modelMsg];
+  [self updateInfobarLabel:infoBarView];
 
   if (buttonOK && buttonCancel) {
     [infoBarView addButton1:buttonOK
@@ -98,11 +101,33 @@ ConfirmInfoBarDelegate::InfoBarButton UITagToButton(NSUInteger tag) {
                     action:@selector(infoBarButtonDidPress:)];
   } else {
     // No buttons, only message.
-    DCHECK(modelMsg && !buttonCancel);
+    DCHECK(!confirmInfobarDelegate_->GetMessageText().empty() && !buttonCancel);
   }
   return infoBarView;
 }
 
+- (void)updateInfobarLabel:(UIView<InfoBarViewProtocol>*)view {
+  if (!confirmInfobarDelegate_->GetMessageText().length())
+    return;
+  if (confirmInfobarDelegate_->GetLinkText().length()) {
+    base::string16 msgLink = base::SysNSStringToUTF16(
+        [[view class] stringAsLink:base::SysUTF16ToNSString(
+                                       confirmInfobarDelegate_->GetLinkText())
+                               tag:ConfirmInfoBarUITags::TITLE_LINK]);
+    base::string16 messageText = confirmInfobarDelegate_->GetMessageText();
+    ReplaceFirstSubstringAfterOffset(
+        &messageText, 0, confirmInfobarDelegate_->GetLinkText(), msgLink);
+
+    [view addLabel:base::SysUTF16ToNSString(messageText)
+            target:self
+            action:@selector(infobarLinkDidPress:)];
+  } else {
+    NSString* label =
+        base::SysUTF16ToNSString(confirmInfobarDelegate_->GetMessageText());
+    [view addLabel:label];
+  }
+}
+
 #pragma mark - Handling of User Events
 
 - (void)infoBarButtonDidPress:(id)sender {
@@ -121,4 +146,15 @@ ConfirmInfoBarDelegate::InfoBarButton UITagToButton(NSUInteger tag) {
   }
 }
 
+// Title link was clicked.
+- (void)infobarLinkDidPress:(NSNumber*)tag {
+  DCHECK([tag isKindOfClass:[NSNumber class]]);
+  if (!self.delegate) {
+    return;
+  }
+  if ([tag unsignedIntegerValue] == ConfirmInfoBarUITags::TITLE_LINK) {
+    confirmInfobarDelegate_->LinkClicked(NEW_FOREGROUND_TAB);
+  }
+}
+
 @end