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// Copyright (c) 2014 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.

package org.cef.callback;

import org.cef.misc.BoolRef;
import org.cef.misc.IntRef;

/**
 * Supports creation and modification of menus. See cef_menu_id_t for the
 * command ids that have default implementations. All user-defined command ids
 * should be between MENU_ID_USER_FIRST and MENU_ID_USER_LAST. The methods of
 * this class can only be accessed on the browser process the UI thread.
 */
public interface CefMenuModel {
    public static final class MenuId {
        public static final int MENU_ID_BACK = 100;
        public static final int MENU_ID_FORWARD = 101;
        public static final int MENU_ID_RELOAD = 102;
        public static final int MENU_ID_RELOAD_NOCACHE = 103;
        public static final int MENU_ID_STOPLOAD = 104;

        // Editing.
        public static final int MENU_ID_UNDO = 110;
        public static final int MENU_ID_REDO = 111;
        public static final int MENU_ID_CUT = 112;
        public static final int MENU_ID_COPY = 113;
        public static final int MENU_ID_PASTE = 114;
        public static final int MENU_ID_DELETE = 115;
        public static final int MENU_ID_SELECT_ALL = 116;

        // Miscellaneous.
        public static final int MENU_ID_FIND = 130;
        public static final int MENU_ID_PRINT = 131;
        public static final int MENU_ID_VIEW_SOURCE = 132;

        // Spell checking word correction suggestions.
        public static final int MENU_ID_SPELLCHECK_SUGGESTION_0 = 200;
        public static final int MENU_ID_SPELLCHECK_SUGGESTION_1 = 201;
        public static final int MENU_ID_SPELLCHECK_SUGGESTION_2 = 202;
        public static final int MENU_ID_SPELLCHECK_SUGGESTION_3 = 203;
        public static final int MENU_ID_SPELLCHECK_SUGGESTION_4 = 204;
        public static final int MENU_ID_SPELLCHECK_SUGGESTION_LAST = 204;
        public static final int MENU_ID_NO_SPELLING_SUGGESTIONS = 205;

        // All user-defined menu IDs should come between MENU_ID_USER_FIRST and
        // MENU_ID_USER_LAST to avoid overlapping the Chromium and CEF ID ranges
        // defined in the tools/gritsettings/resource_ids file.
        public static final int MENU_ID_USER_FIRST = 26500;
        public static final int MENU_ID_USER_LAST = 28500;
    }

    /**
     * Supported menu item types.
     */
    public enum MenuItemType {
        MENUITEMTYPE_NONE,
        MENUITEMTYPE_COMMAND,
        MENUITEMTYPE_CHECK,
        MENUITEMTYPE_RADIO,
        MENUITEMTYPE_SEPARATOR,
        MENUITEMTYPE_SUBMENU,
    }

    /**
     * Clears the menu. Returns true on success.
     */
    boolean clear();

    /**
     * Returns the number of items in this menu.
     */
    int getCount();

    /**
     * Add a separator to the menu. Returns true on success.
     */
    boolean addSeparator();

    /**
     * Add an item to the menu. Returns true on success.
     */
    boolean addItem(int command_id, String label);

    /**
     * Add a check item to the menu. Returns true on success.
     */
    boolean addCheckItem(int command_id, String label);

    /**
     * Add a radio item to the menu. Only a single item with the specified
     * |group_id| can be checked at a time. Returns true on success.
     */
    boolean addRadioItem(int command_id, String label, int group_id);

    /**
     * Add a sub-menu to the menu. The new sub-menu is returned.
     */
    CefMenuModel addSubMenu(int command_id, String label);

    /**
     * Insert a separator in the menu at the specified |index|. Returns true on
     * success.
     */
    boolean insertSeparatorAt(int index);

    /**
     * Insert an item in the menu at the specified |index|. Returns true on
     * success.
     */
    boolean insertItemAt(int index, int command_id, String label);

    /**
     * Insert a check item in the menu at the specified |index|. Returns true on
     * success.
     */
    boolean insertCheckItemAt(int index, int command_id, String label);

    /**
     * Insert a radio item in the menu at the specified |index|. Only a single
     * item with the specified |group_id| can be checked at a time. Returns true
     * on success.
     */
    boolean insertRadioItemAt(int index, int command_id, String label, int group_id);

    /**
     * Insert a sub-menu in the menu at the specified |index|. The new sub-menu
     * is returned.
     */
    CefMenuModel insertSubMenuAt(int index, int command_id, String label);

    /**
     * Removes the item with the specified |command_id|. Returns true on success.
     */
    boolean remove(int command_id);

    /**
     * Removes the item at the specified |index|. Returns true on success.
     */
    boolean removeAt(int index);

    /**
     * Returns the index associated with the specified |command_id| or -1 if not
     * found due to the command id not existing in the menu.
     */
    int getIndexOf(int command_id);

    /**
     * Returns the command id at the specified |index| or -1 if not found due to
     * invalid range or the index being a separator.
     */
    int getCommandIdAt(int index);

    /**
     * Sets the command id at the specified |index|. Returns true on success.
     */
    boolean setCommandIdAt(int index, int command_id);

    /**
     * Returns the label for the specified |command_id| or empty if not found.
     */
    String getLabel(int command_id);

    /**
     * Returns the label at the specified |index| or empty if not found due to
     * invalid range or the index being a separator.
     */
    String getLabelAt(int index);

    /**
     * Sets the label for the specified |command_id|. Returns true on success.
     */
    boolean setLabel(int command_id, String label);

    /**
     * Set the label at the specified |index|. Returns true on success.
     */
    boolean setLabelAt(int index, String label);

    /**
     * Returns the item type for the specified |command_id|.
     */
    MenuItemType getType(int command_id);

    /**
     * Returns the item type at the specified |index|.
     */
    MenuItemType getTypeAt(int index);

    /**
     * Returns the group id for the specified |command_id| or -1 if invalid.
     */
    int getGroupId(int command_id);

    /**
     * Returns the group id at the specified |index| or -1 if invalid.
     */
    int getGroupIdAt(int index);

    /**
     * Sets the group id for the specified |command_id|. Returns true on success.
     */
    boolean setGroupId(int command_id, int group_id);

    /**
     * Sets the group id at the specified |index|. Returns true on success.
     */
    boolean setGroupIdAt(int index, int group_id);

    /**
     * Returns the submenu for the specified |command_id| or empty if invalid.
     */
    CefMenuModel getSubMenu(int command_id);

    /**
     * Returns the submenu at the specified |index| or empty if invalid.
     */
    CefMenuModel getSubMenuAt(int index);

    /**
     * Returns true if the specified |command_id| is visible.
     */
    boolean isVisible(int command_id);

    /**
     * Returns true if the specified |index| is visible.
     */
    boolean isVisibleAt(int index);

    /**
     * Change the visibility of the specified |command_id|. Returns true on
     * success.
     */
    boolean setVisible(int command_id, boolean visible);

    /**
     * Change the visibility at the specified |index|. Returns true on success.
     */
    boolean setVisibleAt(int index, boolean visible);

    /**
     * Returns true if the specified |command_id| is enabled.
     */
    boolean isEnabled(int command_id);

    /**
     * Returns true if the specified |index| is enabled.
     */
    boolean isEnabledAt(int index);

    /**
     * Change the enabled status of the specified |command_id|. Returns true on
     * success.
     */
    boolean setEnabled(int command_id, boolean enabled);

    /**
     * Change the enabled status at the specified |index|. Returns true on
     * success.
     */
    boolean setEnabledAt(int index, boolean enabled);

    /**
     * Returns true if the specified |command_id| is checked. Only applies to
     * check and radio items.
     */
    boolean isChecked(int command_id);

    /**
     * Returns true if the specified |index| is checked. Only applies to check
     * and radio items.
     */
    boolean isCheckedAt(int index);

    /**
     * Check the specified |command_id|. Only applies to check and radio items.
     * Returns true on success.
     */
    boolean setChecked(int command_id, boolean checked);

    /**
     * Check the specified |index|. Only applies to check and radio items. Returns
     * true on success.
     */
    boolean setCheckedAt(int index, boolean checked);

    /**
     * Returns true if the specified |command_id| has a keyboard accelerator
     * assigned.
     */
    boolean hasAccelerator(int command_id);

    /**
     * Returns true if the specified |index| has a keyboard accelerator assigned.
     */
    boolean hasAcceleratorAt(int index);

    /**
     * Set the keyboard accelerator for the specified |command_id|. |key_code| can
     * be any key or character value. Returns true on success.
     */
    boolean setAccelerator(int command_id, int key_code, boolean shift_pressed,
                           boolean ctrl_pressed, boolean alt_pressed);

    /**
     * Set the keyboard accelerator at the specified |index|. |key_code| can be
     * any key or character value. Returns true on success.
     */
    boolean setAcceleratorAt(int index, int key_code, boolean shift_pressed, boolean ctrl_pressed,
                             boolean alt_pressed);

    /**
     * Remove the keyboard accelerator for the specified |command_id|. Returns
     * true on success.
     */
    boolean removeAccelerator(int command_id);

    /**
     * Remove the keyboard accelerator at the specified |index|. Returns true on
     * success.
     */
    boolean removeAcceleratorAt(int index);

    /**
     * Retrieves the keyboard accelerator for the specified |command_id|. Returns
     * true on success.
     */
    boolean getAccelerator(int command_id, IntRef key_code, BoolRef shift_pressed,
                           BoolRef ctrl_pressed, BoolRef alt_pressed);

    /**
     * Retrieves the keyboard accelerator for the specified |index|. Returns true
     * on success.
     */
    boolean getAcceleratorAt(int index, IntRef key_code, BoolRef shift_pressed,
                             BoolRef ctrl_pressed, BoolRef alt_pressed);
}