1 // Copyright 2014 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_AUTOFILL_POPUP_CONTROLLER_COMMON_H_ 6 #define CHROME_BROWSER_UI_AUTOFILL_POPUP_CONTROLLER_COMMON_H_ 7 8 #include "content/public/browser/render_widget_host.h" 9 #include "ui/gfx/native_widget_types.h" 10 #include "ui/gfx/rect.h" 11 #include "ui/gfx/rect_f.h" 12 13 namespace content { 14 struct NativeWebKeyboardEvent; 15 class RenderViewHost; 16 class WebContents; 17 } 18 19 namespace gfx { 20 class Display; 21 } 22 23 namespace autofill { 24 25 // Class that controls common functionality for Autofill style popups. Can 26 // determine the correct location of a popup of a desired size and can register 27 // a handler to key press events. 28 class PopupControllerCommon { 29 public: 30 PopupControllerCommon(const gfx::RectF& element_bounds, 31 gfx::NativeView container_view, 32 content::WebContents* web_contents); 33 virtual ~PopupControllerCommon(); 34 35 const gfx::RectF& element_bounds() const { return element_bounds_; } 36 gfx::NativeView container_view() { return container_view_; } 37 content::WebContents* web_contents() { return web_contents_; } 38 39 // Returns the enclosing rectangle for |element_bounds_|. 40 const gfx::Rect RoundedElementBounds() const; 41 42 // Returns the bounds that the popup should be placed at, given the desired 43 // width and height. By default this places the popup below |element_bounds| 44 // but it will be placed above if there isn't enough space. 45 gfx::Rect GetPopupBounds(int desired_width, int desired_height) const; 46 47 // Callback used to register with RenderViewHost. This can only be set once, 48 // or else a callback may be registered that will not be removed 49 // (crbug.com/338070). Call will crash if callback is already set. 50 void SetKeyPressCallback(content::RenderWidgetHost::KeyPressEventCallback); 51 52 // Register listener for key press events with the current RenderViewHost 53 // associated with |web_contents_|. If callback has already been registered, 54 // this has no effect. 55 void RegisterKeyPressCallback(); 56 57 // Remove previously registered callback, assuming that the current 58 // RenderViewHost is the same as when it was originally registered. Safe to 59 // call even if the callback is not currently registered. 60 void RemoveKeyPressCallback(); 61 62 protected: 63 // A helper function to get the display closest to the given point (virtual 64 // for testing). 65 virtual gfx::Display GetDisplayNearestPoint(const gfx::Point& point) const; 66 67 private: 68 // Calculates the width of the popup and the x position of it. These values 69 // will stay on the screen. 70 std::pair<int, int> CalculatePopupXAndWidth( 71 const gfx::Display& left_display, 72 const gfx::Display& right_display, 73 int popup_required_width) const; 74 75 // Calculates the height of the popup and the y position of it. These values 76 // will stay on the screen. 77 std::pair<int, int> CalculatePopupYAndHeight( 78 const gfx::Display& top_display, 79 const gfx::Display& bottom_display, 80 int popup_required_height) const; 81 82 // The bounds of the text element that is the focus of the popup. 83 // These coordinates are in screen space. 84 gfx::RectF element_bounds_; 85 86 // Weak reference 87 gfx::NativeView container_view_; 88 89 // The WebContents in which this object should listen for keyboard events 90 // while showing the popup. Can be NULL, in which case this object will not 91 // listen for keyboard events. 92 content::WebContents* web_contents_; 93 94 // The RenderViewHost that this object has registered its keyboard press 95 // callback with. 96 content::RenderViewHost* key_press_event_target_; 97 98 content::RenderWidgetHost::KeyPressEventCallback key_press_event_callback_; 99 100 DISALLOW_COPY_AND_ASSIGN(PopupControllerCommon); 101 }; 102 103 } // namespace autofill 104 105 #endif // CHROME_BROWSER_UI_AUTOFILL_POPUP_CONTROLLER_COMMON_H_ 106
