[iOS Clean] Added dialogs UI support.

ios/clean/chrome/browser/ui/dialogs/dialog_text_field_item.h

+// Copyright 2017 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 IOS_CLEAN_CHROME_BROWSER_UI_DIALOGS_DIALOG_TEXT_FIELD_ITEM_H_
+#define IOS_CLEAN_CHROME_BROWSER_UI_DIALOGS_DIALOG_TEXT_FIELD_ITEM_H_
+
+#import <Foundation/Foundation.h>
+
+// An object encapsulating the data necessary to set up a dialog's text field.
+@interface DialogTextFieldItem : NSObject

[marq (ping after 24h), 2017/06/14 10:52:15]

Consider changing "Item" to "Configuration", just to clarify that this object
just tells the UI what to show.

We should be consistent with how collection views are handled, however -- I'm
generally thinking that 'Configuration' is what the consumer protocol sends to
the UI layer, 'Item" is what the UI layer's internal model (if any) uses, and
the actual view-layer objects use the conventional names (cell, button, label,
etc).

[kkhorimoto, 2017/06/23 06:24:18]

Done.

+
+// Factory method for item creation.
++ (instancetype)itemWithDefaultText:(NSString*)defaultText
+                    placeholderText:(NSString*)placeholderText
+                             secure:(BOOL)secure;
+
+// DialogTextFieldItems should be created through the factory method.
+- (instancetype)init NS_UNAVAILABLE;
+
+// The default text to display in the text field, if any.
+@property(nonatomic, readonly, strong) NSString* defaultText;

[marq (ping after 24h), 2017/06/14 10:52:15]

Technically these should also be 'copy' (same for the button item).

[kkhorimoto, 2017/06/23 06:24:18]

Done.

+
+// The placehodler text to display in the text field, if any.
+@property(nonatomic, readonly, strong) NSString* placeholderText;
+
+// Whether the text field should be secure (f.e. for password).

[marq (ping after 24h), 2017/06/14 10:52:15]

nit: expand 'f.e.,', or use the more pretentious and opaque Latin abbreviation
"e.g.".

[kkhorimoto, 2017/06/23 06:24:18]

Went with the pretentious option :P

+@property(nonatomic, readonly, getter=isSecure) BOOL secure;
+
+@end
+
+#endif  // IOS_CLEAN_CHROME_BROWSER_UI_DIALOGS_DIALOG_TEXT_FIELD_ITEM_H_