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Unified Diff: ui/views/controls/menu/menu_delegate.h

Issue 851853002: It is time. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Trying to reup because the last upload failed. Created 5 years, 11 months ago
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Index: ui/views/controls/menu/menu_delegate.h
diff --git a/ui/views/controls/menu/menu_delegate.h b/ui/views/controls/menu/menu_delegate.h
deleted file mode 100644
index c75a09034d28b586e0446e532b0605e57f4c4188..0000000000000000000000000000000000000000
--- a/ui/views/controls/menu/menu_delegate.h
+++ /dev/null
@@ -1,256 +0,0 @@
-// Copyright (c) 2012 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 UI_VIEWS_CONTROLS_MENU_MENU_DELEGATE_H_
-#define UI_VIEWS_CONTROLS_MENU_MENU_DELEGATE_H_
-
-#include <set>
-#include <string>
-
-#include "base/logging.h"
-#include "base/strings/string16.h"
-#include "third_party/skia/include/core/SkColor.h"
-#include "ui/base/dragdrop/drag_drop_types.h"
-#include "ui/base/dragdrop/os_exchange_data.h"
-#include "ui/base/ui_base_types.h"
-#include "ui/views/controls/menu/menu_types.h"
-#include "ui/views/views_export.h"
-
-using ui::OSExchangeData;
-
-namespace gfx {
-class FontList;
-class Point;
-}
-
-namespace ui {
-class Accelerator;
-class DropTargetEvent;
-}
-
-namespace views {
-
-class MenuButton;
-class MenuItemView;
-
-// MenuDelegate --------------------------------------------------------------
-
-// Delegate for a menu. This class is used as part of MenuItemView, see it
-// for details.
-// TODO(sky): merge this with ui::MenuModel.
-class VIEWS_EXPORT MenuDelegate {
- public:
- // Used during drag and drop to indicate where the drop indicator should
- // be rendered.
- enum DropPosition {
- DROP_UNKNOWN = -1,
-
- // Indicates a drop is not allowed here.
- DROP_NONE,
-
- // Indicates the drop should occur before the item.
- DROP_BEFORE,
-
- // Indicates the drop should occur after the item.
- DROP_AFTER,
-
- // Indicates the drop should occur on the item.
- DROP_ON
- };
-
- virtual ~MenuDelegate();
-
- // Whether or not an item should be shown as checked. This is invoked for
- // radio buttons and check buttons.
- virtual bool IsItemChecked(int id) const;
-
- // The string shown for the menu item. This is only invoked when an item is
- // added with an empty label.
- virtual base::string16 GetLabel(int id) const;
-
- // The font for the menu item label.
- virtual const gfx::FontList* GetLabelFontList(int id) const;
-
- // Whether this item should be displayed with a bolder color when disabled.
- virtual bool GetShouldUseDisabledEmphasizedForegroundColor(
- int command_id) const;
-
- // Override the text color of a given menu item dependent on the
- // |command_id| and its |is_hovered| state. Returns true if it chooses to
- // override the color.
- //
- // TODO(erg): Remove this interface. Injecting raw colors into the menu
- // circumvents the NativeTheme.
- virtual bool GetForegroundColor(int command_id,
- bool is_hovered,
- SkColor* override_color) const;
-
- // Override the background color of a given menu item dependent on the
- // |command_id| and its |is_hovered| state. Returns true if it chooses to
- // override the color.
- //
- // TODO(erg): Remove this interface. Injecting raw colors into the menu
- // circumvents the NativeTheme.
- virtual bool GetBackgroundColor(int command_id,
- bool is_hovered,
- SkColor* override_color) const;
-
- // The tooltip shown for the menu item. This is invoked when the user
- // hovers over the item, and no tooltip text has been set for that item.
- virtual base::string16 GetTooltipText(int id,
- const gfx::Point& screen_loc) const;
-
- // If there is an accelerator for the menu item with id |id| it is set in
- // |accelerator| and true is returned.
- virtual bool GetAccelerator(int id, ui::Accelerator* accelerator) const;
-
- // Shows the context menu with the specified id. This is invoked when the
- // user does the appropriate gesture to show a context menu. The id
- // identifies the id of the menu to show the context menu for.
- // is_mouse_gesture is true if this is the result of a mouse gesture.
- // If this is not the result of a mouse gesture |p| is the recommended
- // location to display the content menu at. In either case, |p| is in
- // screen coordinates.
- // Returns true if a context menu was displayed, otherwise false
- virtual bool ShowContextMenu(MenuItemView* source,
- int id,
- const gfx::Point& p,
- ui::MenuSourceType source_type);
-
- // Controller
- virtual bool SupportsCommand(int id) const;
- virtual bool IsCommandEnabled(int id) const;
- virtual bool IsCommandVisible(int id) const;
- virtual bool GetContextualLabel(int id, base::string16* out) const;
- virtual void ExecuteCommand(int id) {
- }
-
- // If nested menus are showing (nested menus occur when a menu shows a context
- // menu) this is invoked to determine if all the menus should be closed when
- // the user selects the menu with the command |id|. This returns true to
- // indicate that all menus should be closed. Return false if only the
- // context menu should be closed.
- virtual bool ShouldCloseAllMenusOnExecute(int id);
-
- // Executes the specified command. mouse_event_flags give the flags of the
- // mouse event that triggered this to be invoked (ui::MouseEvent
- // flags). mouse_event_flags is 0 if this is triggered by a user gesture
- // other than a mouse event.
- virtual void ExecuteCommand(int id, int mouse_event_flags);
-
- // Returns true if ExecuteCommand() should be invoked while leaving the
- // menu open. Default implementation returns true.
- virtual bool ShouldExecuteCommandWithoutClosingMenu(int id,
- const ui::Event& e);
-
- // Returns true if the specified event is one the user can use to trigger, or
- // accept, the item. Defaults to left or right mouse buttons or tap.
- virtual bool IsTriggerableEvent(MenuItemView* view, const ui::Event& e);
-
- // Invoked to determine if drops can be accepted for a submenu. This is
- // ONLY invoked for menus that have submenus and indicates whether or not
- // a drop can occur on any of the child items of the item. For example,
- // consider the following menu structure:
- //
- // A
- // B
- // C
- //
- // Where A has a submenu with children B and C. This is ONLY invoked for
- // A, not B and C.
- //
-
- // To restrict which children can be dropped on override GetDropOperation.
- virtual bool CanDrop(MenuItemView* menu, const OSExchangeData& data);
-
- // See view for a description of this method.
- virtual bool GetDropFormats(
- MenuItemView* menu,
- int* formats,
- std::set<OSExchangeData::CustomFormat>* custom_formats);
-
- // See view for a description of this method.
- virtual bool AreDropTypesRequired(MenuItemView* menu);
-
- // Returns the drop operation for the specified target menu item. This is
- // only invoked if CanDrop returned true for the parent menu. position
- // is set based on the location of the mouse, reset to specify a different
- // position.
- //
- // If a drop should not be allowed, returned ui::DragDropTypes::DRAG_NONE.
- virtual int GetDropOperation(MenuItemView* item,
- const ui::DropTargetEvent& event,
- DropPosition* position);
-
- // Invoked to perform the drop operation. This is ONLY invoked if CanDrop()
- // returned true for the parent menu item, and GetDropOperation() returned an
- // operation other than ui::DragDropTypes::DRAG_NONE.
- //
- // |menu| is the menu the drop occurred on.
- virtual int OnPerformDrop(MenuItemView* menu,
- DropPosition position,
- const ui::DropTargetEvent& event);
-
- // Invoked to determine if it is possible for the user to drag the specified
- // menu item.
- virtual bool CanDrag(MenuItemView* menu);
-
- // Invoked to write the data for a drag operation to data. sender is the
- // MenuItemView being dragged.
- virtual void WriteDragData(MenuItemView* sender, OSExchangeData* data);
-
- // Invoked to determine the drag operations for a drag session of sender.
- // See DragDropTypes for possible values.
- virtual int GetDragOperations(MenuItemView* sender);
-
- // Notification the menu has closed. This is only sent when running the
- // menu for a drop.
- virtual void DropMenuClosed(MenuItemView* menu) {
- }
-
- // Returns true if the menu should close upon a drag completing. Defaults to
- // true. This is only invoked for drag and drop operations performed on child
- // Views that are not MenuItemViews.
- virtual bool ShouldCloseOnDragComplete();
-
- // Notification that the user has highlighted the specified item.
- virtual void SelectionChanged(MenuItemView* menu) {
- }
-
- // If the user drags the mouse outside the bounds of the menu the delegate
- // is queried for a sibling menu to show. If this returns non-null the
- // current menu is hidden, and the menu returned from this method is shown.
- //
- // The delegate owns the returned menu, not the controller.
- virtual MenuItemView* GetSiblingMenu(MenuItemView* menu,
- const gfx::Point& screen_point,
- MenuAnchorPosition* anchor,
- bool* has_mnemonics,
- MenuButton** button);
-
- // Returns the max width menus can grow to be.
- virtual int GetMaxWidthForMenu(MenuItemView* menu);
-
- // Invoked prior to a menu being shown.
- virtual void WillShowMenu(MenuItemView* menu);
-
- // Invoked prior to a menu being hidden.
- virtual void WillHideMenu(MenuItemView* menu);
-
- // Returns additional horizontal spacing for the icon of the given item.
- // The |command_id| specifies the item of interest, the |icon_size| tells the
- // function the size of the icon and it will then return |left_margin|
- // and |right_margin| accordingly. Note: Negative values can be returned.
- virtual void GetHorizontalIconMargins(int command_id,
- int icon_size,
- int* left_margin,
- int* right_margin) const;
- // Returns true if the labels should reserve additional spacing for e.g.
- // submenu indicators at the end of the line.
- virtual bool ShouldReserveSpaceForSubmenuIndicator() const;
-};
-
-} // namespace views
-
-#endif // UI_VIEWS_CONTROLS_MENU_MENU_DELEGATE_H_
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