Adding search widget UI and functionality.

ios/chrome/search_widget_extension/search_widget_view.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_CHROME_SEARCH_WIDGET_EXTENSION_SEARCH_WIDGET_VIEW_H_
 #define IOS_CHROME_SEARCH_WIDGET_EXTENSION_SEARCH_WIDGET_VIEW_H_
 
 #import <UIKit/UIKit.h>
 
 // Protocol to be implemented by targets for user actions coming from the search
 // widget view.
 @protocol SearchWidgetViewActionTarget
 
 // Called when the user taps the Search button.
 - (void)openSearch:(id)sender;
 // Called when the user taps the Incognito Search button.
 - (void)openIncognito:(id)sender;
 // Called when the user taps the Voice Search button.
 - (void)openVoice:(id)sender;
 // Called when the user taps the QR Code button.
 - (void)openQRCode:(id)sender;
 // Called when the user taps the Open Copied URL section.
 - (void)openCopiedURL:(id)sender;
 
 @end
 
 // View for the search widget. Shows a blinking cursor for a fake omnibox and

[stkhapugin, 2017/05/04 13:12:08]

This is no longer accurate.

[lody, 2017/05/05 17:05:43]

Done.

 // calls the target when tapped.
 @interface SearchWidgetView : UIView
 
+// Set this property to show/hide the copied URL section.
+@property(nonatomic) BOOL copiedURLVisible;
+
 // Designated initializer, creates the widget view with a |target| for user
-// actions.
+// actions. View elements will be added to the |primaryVibrancyEffect| and
+// |secondaryVibrancyEffect| views.
 - (instancetype)initWithActionTarget:(id<SearchWidgetViewActionTarget>)target
+               primaryVibrancyEffect:(UIVibrancyEffect*)primaryVibrancyEffect
+             secondaryVibrancyEffect:(UIVibrancyEffect*)secondaryVibrancyEffect
     NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithFrame:(CGRect)frame NS_UNAVAILABLE;
 - (instancetype)initWithCoder:(NSCoder*)aDecoder NS_UNAVAILABLE;
 
 // Updates the copied URL.
 - (void)updateCopiedURL:(NSString*)copiedURL;

[stkhapugin, 2017/05/04 13:12:08]

Should this be a setter on a property |copiedURL| instead?

[lpromero, 2017/05/05 14:02:00]

Some people don't like non-trivial setters.

[lody, 2017/05/05 17:05:42]

Seeing as how I already had a non-trivial setter for copiedURLVisible, I think
consistency is at least better.

[lody, 2017/05/05 17:05:43]

Done.

 
 @end
 
 #endif  // IOS_CHROME_SEARCH_WIDGET_EXTENSION_SEARCH_WIDGET_VIEW_H_