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| 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 ATHENA_SCREEN_PUBLIC_SCREEN_MANAGER_H_ | |
| 6 #define ATHENA_SCREEN_PUBLIC_SCREEN_MANAGER_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "athena/athena_export.h" | |
| 11 #include "ui/gfx/display.h" | |
| 12 | |
| 13 namespace aura { | |
| 14 class Window; | |
| 15 } | |
| 16 | |
| 17 namespace athena { | |
| 18 class ScreenManagerDelegate; | |
| 19 | |
| 20 // Mananges basic UI components on the screen such as background, and provide | |
| 21 // API for other UI components, such as window manager, home card, to | |
| 22 // create and manage their windows on the screen. | |
| 23 class ATHENA_EXPORT ScreenManager { | |
| 24 public: | |
| 25 struct ContainerParams { | |
| 26 ContainerParams(const std::string& name, int z_order_priority); | |
| 27 std::string name; | |
| 28 | |
| 29 // True if the container can activate its child window. | |
| 30 bool can_activate_children; | |
| 31 | |
| 32 // True if the container will block evnets from containers behind it. | |
| 33 bool block_events; | |
| 34 | |
| 35 // Defines the z_order priority of the container. | |
| 36 int z_order_priority; | |
| 37 | |
| 38 // True if this container should be used as a default parent. | |
| 39 bool default_parent; | |
| 40 | |
| 41 // The container priority used to open modal dialog window | |
| 42 // created with this container as a transient parent (Note: A modal window | |
| 43 // should | |
| 44 // use a trnasient parent, not a direct parent, or no transient parent.) | |
| 45 // | |
| 46 // Default is -1, and it will fallback to the container behind this | |
| 47 // container, | |
| 48 // that has the modal container proiroty. | |
| 49 // | |
| 50 // The modal container for modal window is selected as follows. | |
| 51 // 1) a window must be created with |aura::client::kModalKey| property | |
| 52 // without explicit parent set. | |
| 53 // 2.a) If aura::client::kAlwaysOnTopKey is NOT set, it uses the stand flow | |
| 54 // described above. (fallback to containers behind this). | |
| 55 // 2.b) If aura::client::kAlwaysOnTopKey is set, it searches the top most | |
| 56 // container which has |modal_container_priority| != -1. | |
| 57 // 3) Look for the container with |modal_container_priority|, and create | |
| 58 // one if it doesn't exist. | |
| 59 // | |
| 60 // Created modal container will self destruct if last modal window | |
| 61 // is deleted. | |
| 62 int modal_container_priority; | |
| 63 }; | |
| 64 | |
| 65 // Creates, returns and deletes the singleton object of the ScreenManager | |
| 66 // implementation. | |
| 67 static ScreenManager* Create(aura::Window* root); | |
| 68 static ScreenManager* Get(); | |
| 69 static void Shutdown(); | |
| 70 | |
| 71 virtual ~ScreenManager() {} | |
| 72 | |
| 73 // Creates the container window on the screen. | |
| 74 virtual aura::Window* CreateContainer(const ContainerParams& params) = 0; | |
| 75 | |
| 76 // Return the context object to be used for widget creation. | |
| 77 virtual aura::Window* GetContext() = 0; | |
| 78 | |
| 79 // Set screen rotation. | |
| 80 // TODO(flackr): Extract and use ash DisplayManager to set rotation | |
| 81 // instead: http://crbug.com/401044. | |
| 82 virtual void SetRotation(gfx::Display::Rotation rotation) = 0; | |
| 83 virtual void SetRotationLocked(bool rotation_locked) = 0; | |
| 84 }; | |
| 85 | |
| 86 } // namespace athena | |
| 87 | |
| 88 #endif // ATHENA_SCREEN_PUBLIC_SCREEN_MANAGER_H_ | |
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