/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package yuku.androidsdk.com.android.internal.view.menu;
import android.content.Intent;
import android.graphics.drawable.Drawable;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.*;
/**
* @hide
*/
public final class MenuItemImpl implements MenuItem {
private final int mId;
private final int mGroup;
private final int mCategoryOrder;
private final int mOrdering;
private CharSequence mTitle;
private CharSequence mTitleCondensed;
private Intent mIntent;
private char mShortcutNumericChar;
private char mShortcutAlphabeticChar;
/** The icon's drawable which is only created as needed */
private Drawable mIconDrawable;
/**
* The icon's resource ID which is used to get the Drawable when it is
* needed (if the Drawable isn't already obtained--only one of the two is
* needed).
*/
private int mIconResId = NO_ICON;
/** The menu to which this item belongs */
private MenuBuilder mMenu;
private Runnable mItemCallback;
private int mFlags = ENABLED;
private static final int CHECKABLE = 0x00000001;
private static final int CHECKED = 0x00000002;
private static final int EXCLUSIVE = 0x00000004;
private static final int HIDDEN = 0x00000008;
private static final int ENABLED = 0x00000010;
/** Used for the icon resource ID if this item does not have an icon */
static final int NO_ICON = 0;
/**
* Current use case is for context menu: Extra information linked to the
* View that added this item to the context menu.
*/
private ContextMenuInfo mMenuInfo;
private static String sPrependShortcutLabel;
private static String sEnterShortcutLabel;
private static String sDeleteShortcutLabel;
private static String sSpaceShortcutLabel;
/**
* Instantiates this menu item. The constructor {@link #MenuItemData(MenuBuilder, int, int, int, CharSequence, int)} is
* preferred due to lazy loading of the icon Drawable.
*
* @param menu
* @param group
* Item ordering grouping control. The item will be added after
* all other items whose order is <= this number, and before any
* that are larger than it. This can also be used to define
* groups of items for batch state changes. Normally use 0.
* @param id
* Unique item ID. Use 0 if you do not need a unique ID.
* @param categoryOrder
* The ordering for this item.
* @param title
* The text to display for the item.
*/
MenuItemImpl(MenuBuilder menu, int group, int id, int categoryOrder, int ordering, CharSequence title) {
mMenu = menu;
mId = id;
mGroup = group;
mCategoryOrder = categoryOrder;
mOrdering = ordering;
mTitle = title;
}
@Override
public boolean isEnabled() {
return (mFlags & ENABLED) != 0;
}
@Override
public MenuItem setEnabled(boolean enabled) {
if (enabled) {
mFlags |= ENABLED;
} else {
mFlags &= ~ENABLED;
}
return this;
}
@Override
public int getGroupId() {
return mGroup;
}
@Override
@ViewDebug.CapturedViewProperty
public int getItemId() {
return mId;
}
@Override
public int getOrder() {
return mCategoryOrder;
}
public int getOrdering() {
return mOrdering;
}
@Override
public Intent getIntent() {
return mIntent;
}
@Override
public MenuItem setIntent(Intent intent) {
mIntent = intent;
return this;
}
Runnable getCallback() {
return mItemCallback;
}
public MenuItem setCallback(Runnable callback) {
mItemCallback = callback;
return this;
}
@Override
public char getAlphabeticShortcut() {
return mShortcutAlphabeticChar;
}
@Override
public MenuItem setAlphabeticShortcut(char alphaChar) {
if (mShortcutAlphabeticChar == alphaChar) return this;
mShortcutAlphabeticChar = Character.toLowerCase(alphaChar);
return this;
}
@Override
public char getNumericShortcut() {
return mShortcutNumericChar;
}
@Override
public MenuItem setNumericShortcut(char numericChar) {
if (mShortcutNumericChar == numericChar) return this;
mShortcutNumericChar = numericChar;
return this;
}
@Override
public MenuItem setShortcut(char numericChar, char alphaChar) {
mShortcutNumericChar = numericChar;
mShortcutAlphabeticChar = Character.toLowerCase(alphaChar);
return this;
}
/**
* @return The active shortcut (based on QWERTY-mode of the menu).
*/
char getShortcut() {
return (mMenu.isQwertyMode() ? mShortcutAlphabeticChar : mShortcutNumericChar);
}
/**
* @return The label to show for the shortcut. This includes the chording
* key (for example 'Menu+a'). Also, any non-human readable
* characters should be human readable (for example 'Menu+enter').
*/
String getShortcutLabel() {
char shortcut = getShortcut();
if (shortcut == 0) {
return "";
}
StringBuilder sb = new StringBuilder(sPrependShortcutLabel);
switch (shortcut) {
case '\n':
sb.append(sEnterShortcutLabel);
break;
case '\b':
sb.append(sDeleteShortcutLabel);
break;
case ' ':
sb.append(sSpaceShortcutLabel);
break;
default:
sb.append(shortcut);
break;
}
return sb.toString();
}
@Override
@ViewDebug.CapturedViewProperty
public CharSequence getTitle() {
return mTitle;
}
@Override
public MenuItem setTitle(CharSequence title) {
mTitle = title;
return this;
}
@Override
public MenuItem setTitle(int title) {
return setTitle(mMenu.getContext().getString(title));
}
@Override
public CharSequence getTitleCondensed() {
return mTitleCondensed != null ? mTitleCondensed : mTitle;
}
@Override
public MenuItem setTitleCondensed(CharSequence title) {
mTitleCondensed = title;
// Could use getTitle() in the loop below, but just cache what it would do here
if (title == null) {
title = mTitle;
}
return this;
}
@Override
public Drawable getIcon() {
if (mIconDrawable != null) {
return mIconDrawable;
}
if (mIconResId != NO_ICON) {
return mMenu.getResources().getDrawable(mIconResId);
}
return null;
}
@Override
public MenuItem setIcon(Drawable icon) {
mIconResId = NO_ICON;
mIconDrawable = icon;
return this;
}
@Override
public MenuItem setIcon(int iconResId) {
mIconDrawable = null;
mIconResId = iconResId;
return this;
}
@Override
public boolean isCheckable() {
return (mFlags & CHECKABLE) == CHECKABLE;
}
@Override
public MenuItem setCheckable(boolean checkable) {
mFlags = (mFlags & ~CHECKABLE) | (checkable ? CHECKABLE : 0);
return this;
}
public void setExclusiveCheckable(boolean exclusive) {
mFlags = (mFlags & ~EXCLUSIVE) | (exclusive ? EXCLUSIVE : 0);
}
public boolean isExclusiveCheckable() {
return (mFlags & EXCLUSIVE) != 0;
}
@Override
public boolean isChecked() {
return (mFlags & CHECKED) == CHECKED;
}
@Override
public MenuItem setChecked(boolean checked) {
if ((mFlags & EXCLUSIVE) != 0) {
// Call the method on the Menu since it knows about the others in this
// exclusive checkable group
mMenu.setExclusiveItemChecked(this);
} else {
setCheckedInt(checked);
}
return this;
}
void setCheckedInt(boolean checked) {
mFlags = (mFlags & ~CHECKED) | (checked ? CHECKED : 0);
}
@Override
public boolean isVisible() {
return (mFlags & HIDDEN) == 0;
}
/**
* Changes the visibility of the item. This method DOES NOT notify the
* parent menu of a change in this item, so this should only be called from
* methods that will eventually trigger this change. If unsure, use {@link #setVisible(boolean)} instead.
*
* @param shown
* Whether to show (true) or hide (false).
* @return Whether the item's shown state was changed
*/
boolean setVisibleInt(boolean shown) {
final int oldFlags = mFlags;
mFlags = (mFlags & ~HIDDEN) | (shown ? 0 : HIDDEN);
return oldFlags != mFlags;
}
@Override
public MenuItem setVisible(boolean shown) {
// Try to set the shown state to the given state. If the shown state was changed
// (i.e. the previous state isn't the same as given state), notify the parent menu that
// the shown state has changed for this item
if (setVisibleInt(shown)) mMenu.onItemVisibleChanged(this);
return this;
}
@Override
public MenuItem setOnMenuItemClickListener(MenuItem.OnMenuItemClickListener clickListener) {
return this;
}
@Override
public String toString() {
return mTitle.toString();
}
void setMenuInfo(ContextMenuInfo menuInfo) {
mMenuInfo = menuInfo;
}
@Override
public ContextMenuInfo getMenuInfo() {
return mMenuInfo;
}
@Override
public SubMenu getSubMenu() {
return null;
}
@Override
public boolean hasSubMenu() {
return false;
}
// ERROR REPORT 2010-01-08 don't know from where.
//java.lang.AbstractMethodError: abstract method not implemented
//at yuku.androidsdk.com.android.internal.view.menu.MenuItemImpl.setShortcutLabel(MenuItemImpl.java)
// so, dummy implementation:
public void setShortcutLabel(String whatever) {}
}