Index: chrome/browser/ui/website_settings/chooser_bubble_delegate.h |
diff --git a/chrome/browser/ui/website_settings/chooser_bubble_delegate.h b/chrome/browser/ui/website_settings/chooser_bubble_delegate.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..6166e56782791361b56c923988b0526f211bb95c |
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+++ b/chrome/browser/ui/website_settings/chooser_bubble_delegate.h |
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+// Copyright 2015 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 CHROME_BROWSER_UI_WEBSITE_SETTINGS_CHOOSER_BUBBLE_DELEGATE_H_ |
+#define CHROME_BROWSER_UI_WEBSITE_SETTINGS_CHOOSER_BUBBLE_DELEGATE_H_ |
+ |
+#include <vector> |
+ |
+#include "base/macros.h" |
+#include "base/strings/string16.h" |
+#include "components/bubble/bubble_delegate.h" |
+ |
+class Browser; |
+ |
+// Subclass ChooserBubbleDelegate to implement a chooser bubble, which has |
+// some introductory text and a list of options that users can pick one of. |
+// Create an instance of your subclass and pass it to |
+// BubbleManager::ShowBubble() to show the bubble. Your subclass must define |
+// the set of options users can pick from; the actions taken after users |
+// select an item or press the 'Cancel' button or the bubble is closed. |
+// You can also override GetName() to identify the bubble you define for |
+// collecting metrics. |
+// After Select/Cancel/Close is called, this object is destroyed and call back |
+// into it is not allowed. |
+class ChooserBubbleDelegate : public BubbleDelegate { |
+ public: |
+ explicit ChooserBubbleDelegate(Browser* browser); |
+ ~ChooserBubbleDelegate() override; |
+ |
+ // Since the set of options can change while the UI is visible an |
+ // implementation should register an observer. |
+ class Observer { |
+ public: |
+ // Called after the options list is initialized for the first time. |
+ // OnOptionsInitialized should only be called once. |
+ virtual void OnOptionsInitialized() = 0; |
+ // Called after GetOptions()[index] has been added to the options and the |
+ // newly added option is the last element in the options list. Calling |
+ // GetOptions()[index] from inside a call to OnOptionAdded will see the |
+ // added string since the options have already been updated. |
+ virtual void OnOptionAdded(int index) = 0; |
+ // Called when GetOptions()[index] is no longer present, and all later |
+ // options have been moved earlier by 1 slot. Calling GetOptions()[index] |
+ // from inside a call to OnOptionRemoved will NOT see the removed string |
+ // since the options have already been updated. |
+ virtual void OnOptionRemoved(int index) = 0; |
+ |
+ protected: |
+ virtual ~Observer() {} |
+ }; |
+ |
+ // BubbleDelegate: |
+ std::string GetName() const override; |
+ scoped_ptr<BubbleUi> BuildBubbleUi() override; |
+ |
+ // The set of options users can pick from. For example, it can be |
+ // USB/Bluetooth devices names which are listed in the chooser bubble |
+ // so that users can grant permission. |
+ virtual const std::vector<base::string16>& GetOptions() const = 0; |
+ |
+ // These three functions are called just before this object is destroyed: |
+ // Called when the user selects the |index|th element from the dialog. |
+ virtual void Select(int index) = 0; |
+ // Called when the user presses the 'Cancel' button in the dialog. |
+ virtual void Cancel() = 0; |
+ // Called when the user clicks outside the dialog or the dialog otherwise |
+ // closes without the user taking an explicit action. |
+ virtual void Close() = 0; |
+ |
+ // Only one observer may be registered at a time. |
+ void set_observer(Observer* observer) { observer_ = observer; } |
+ Observer* observer() const { return observer_; } |
+ |
+ private: |
+ Browser* browser_; |
+ Observer* observer_ = nullptr; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ChooserBubbleDelegate); |
+}; |
+ |
+#endif // CHROME_BROWSER_UI_WEBSITE_SETTINGS_CHOOSER_BUBBLE_DELEGATE_H_ |