1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_UI_VIEWS_DROPDOWN_BAR_VIEW_H_ 6 #define CHROME_BROWSER_UI_VIEWS_DROPDOWN_BAR_VIEW_H_ 7 #pragma once 8 9 #include "views/view.h" 10 11 class DropdownBarHost; 12 13 //////////////////////////////////////////////////////////////////////////////// 14 // 15 // The DropdownBarView is an abstract view to draw the UI controls of the 16 // DropdownBarHost. 17 // 18 //////////////////////////////////////////////////////////////////////////////// 19 class DropdownBarView : public views::View { 20 public: 21 explicit DropdownBarView(DropdownBarHost* host) 22 : host_(host), 23 animation_offset_(0) { 24 } 25 virtual ~DropdownBarView() {} 26 27 // Claims focus for the text field and selects its contents. 28 virtual void SetFocusAndSelection(bool select_all) = 0; 29 30 // Updates the view to let it know where the host is clipping the 31 // dropdown widget (while animating the opening or closing of the widget). 32 void set_animation_offset(int offset) { animation_offset_ = offset; } 33 34 // Returns the offset used while animating. 35 int animation_offset() const { return animation_offset_; } 36 37 protected: 38 // Returns the DropdownBarHost that manages this view. 39 DropdownBarHost* host() const { return host_; } 40 41 private: 42 // The dropdown bar host that controls this view. 43 DropdownBarHost* host_; 44 45 // While animating, the host clips the widget and draws only the bottom 46 // part of it. The view needs to know the pixel offset at which we are drawing 47 // the widget so that we can draw the curved edges that attach to the toolbar 48 // in the right location. 49 int animation_offset_; 50 51 DISALLOW_COPY_AND_ASSIGN(DropdownBarView); 52 }; 53 54 #endif // CHROME_BROWSER_UI_VIEWS_DROPDOWN_BAR_VIEW_H_ 55
