151ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov/* 251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Copyright (C) 2011 The Android Open Source Project 351ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * 451ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Licensed under the Apache License, Version 2.0 (the "License"); 551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * you may not use this file except in compliance with the License. 651ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * You may obtain a copy of the License at 751ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * 851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * http://www.apache.org/licenses/LICENSE-2.0 951ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * 1051ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Unless required by applicable law or agreed to in writing, software 1151ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * distributed under the License is distributed on an "AS IS" BASIS, 1251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1351ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * See the License for the specific language governing permissions and 1451ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * limitations under the License. 1551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov */ 1651ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov 1751ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganovpackage android.view; 1851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov 1951ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganovimport android.content.Context; 2039d5c6172503620ac3761148adac5fd7fa20d02dAdam Powellimport android.util.Log; 2151ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov 2251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov/** 239a1de308cea2d160778fd977825f10a07b49d738Adam Powell * An ActionProvider defines rich menu interaction in a single component. 249a1de308cea2d160778fd977825f10a07b49d738Adam Powell * ActionProvider can generate action views for use in the action bar, 259a1de308cea2d160778fd977825f10a07b49d738Adam Powell * dynamically populate submenus of a MenuItem, and handle default menu 269a1de308cea2d160778fd977825f10a07b49d738Adam Powell * item invocations. 279a1de308cea2d160778fd977825f10a07b49d738Adam Powell * 289a1de308cea2d160778fd977825f10a07b49d738Adam Powell * <p>An ActionProvider can be optionally specified for a {@link MenuItem} and will be 299a1de308cea2d160778fd977825f10a07b49d738Adam Powell * responsible for creating the action view that appears in the {@link android.app.ActionBar} 309a1de308cea2d160778fd977825f10a07b49d738Adam Powell * in place of a simple button in the bar. When the menu item is presented in a way that 319a1de308cea2d160778fd977825f10a07b49d738Adam Powell * does not allow custom action views, (e.g. in an overflow menu,) the ActionProvider 329a1de308cea2d160778fd977825f10a07b49d738Adam Powell * can perform a default action.</p> 339a1de308cea2d160778fd977825f10a07b49d738Adam Powell * 349a1de308cea2d160778fd977825f10a07b49d738Adam Powell * <p>There are two ways to use an action provider: 3551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <ul> 3651ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <li> 379a1de308cea2d160778fd977825f10a07b49d738Adam Powell * Set the action provider on a {@link MenuItem} directly by calling 3851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * {@link MenuItem#setActionProvider(ActionProvider)}. 3951ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </li> 4051ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <li> 419a1de308cea2d160778fd977825f10a07b49d738Adam Powell * Declare the action provider in an XML menu resource. For example: 4251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <pre> 4351ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <code> 4451ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <item android:id="@+id/my_menu_item" 4551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * android:title="Title" 4651ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * android:icon="@drawable/my_menu_item_icon" 4751ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * android:showAsAction="ifRoom" 4851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * android:actionProviderClass="foo.bar.SomeActionProvider" /> 4951ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </code> 5051ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </pre> 5151ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </li> 5251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </ul> 5351ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </p> 5451ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * 5551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * @see MenuItem#setActionProvider(ActionProvider) 5651ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * @see MenuItem#getActionProvider() 5751ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov */ 5851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganovpublic abstract class ActionProvider { 5939d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell private static final String TAG = "ActionProvider"; 60823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell private SubUiVisibilityListener mSubUiVisibilityListener; 6139d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell private VisibilityListener mVisibilityListener; 6251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov 6351ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov /** 64690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * Creates a new instance. ActionProvider classes should always implement a 65690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * constructor that takes a single Context parameter for inflating from menu XML. 6651ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * 6751ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * @param context Context for accessing resources. 6851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov */ 6951ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov public ActionProvider(Context context) { 7051ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov } 7151ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov 7251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov /** 73690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * Factory method called by the Android framework to create new action views. 74690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * 75690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * <p>This method has been deprecated in favor of {@link #onCreateActionView(MenuItem)}. 76690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * Newer apps that wish to support platform versions prior to API 16 should also 77690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * implement this method to return a valid action view.</p> 7851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * 7951ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * @return A new action view. 80690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * 81690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * @deprecated use {@link #onCreateActionView(MenuItem)} 8251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov */ 8351ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov public abstract View onCreateActionView(); 8451ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov 8551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov /** 86690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * Factory method called by the Android framework to create new action views. 87690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * This method returns a new action view for the given MenuItem. 88690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * 89690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * <p>If your ActionProvider implementation overrides the deprecated no-argument overload 90690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * {@link #onCreateActionView()}, overriding this method for devices running API 16 or later 91690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * is recommended but optional. The default implementation calls {@link #onCreateActionView()} 92690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * for compatibility with applications written for older platform versions.</p> 93690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * 94690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * @param forItem MenuItem to create the action view for 95690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell * @return the new action view 96690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell */ 97690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell public View onCreateActionView(MenuItem forItem) { 98690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell return onCreateActionView(); 99690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell } 100690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell 101690ffb4e1f735148a15f2036d9a3c1962fba188cAdam Powell /** 102130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * The result of this method determines whether or not {@link #isVisible()} will be used 103130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * by the {@link MenuItem} this ActionProvider is bound to help determine its visibility. 104130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * 105130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * @return true if this ActionProvider overrides the visibility of the MenuItem 106130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * it is bound to, false otherwise. The default implementation returns false. 107130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * @see #isVisible() 108130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell */ 109130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell public boolean overridesItemVisibility() { 110130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell return false; 111130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell } 112130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell 113130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell /** 114130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * If {@link #overridesItemVisibility()} returns true, the return value of this method 115130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * will help determine the visibility of the {@link MenuItem} this ActionProvider is bound to. 116130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * 117130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * <p>If the MenuItem's visibility is explicitly set to false by the application, 118130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * the MenuItem will not be shown, even if this method returns true.</p> 119130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * 120130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * @return true if the MenuItem this ActionProvider is bound to is visible, false if 121130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell * it is invisible. The default implementation returns true. 122130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell */ 123130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell public boolean isVisible() { 124130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell return true; 125130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell } 126130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell 127130b4572d1f3df702e5b296a655d15a41f6d4c66Adam Powell /** 12839d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * If this ActionProvider is associated with an item in a menu, 12939d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * refresh the visibility of the item based on {@link #overridesItemVisibility()} and 13039d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * {@link #isVisible()}. If {@link #overridesItemVisibility()} returns false, this call 13139d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * will have no effect. 13239d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell */ 13339d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell public void refreshVisibility() { 13439d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell if (mVisibilityListener != null && overridesItemVisibility()) { 13539d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell mVisibilityListener.onActionProviderVisibilityChanged(isVisible()); 13639d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell } 13739d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell } 13839d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell 13939d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell /** 14051ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Performs an optional default action. 14151ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <p> 14251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * For the case of an action provider placed in a menu item not shown as an action this 143961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * method is invoked if previous callbacks for processing menu selection has handled 14451ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * the event. 14551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </p> 14651ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <p> 14751ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * A menu item selection is processed in the following order: 14851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <ul> 14951ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <li> 15051ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Receiving a call to {@link MenuItem.OnMenuItemClickListener#onMenuItemClick 15151ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * MenuItem.OnMenuItemClickListener.onMenuItemClick}. 15251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </li> 15351ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <li> 15451ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Receiving a call to {@link android.app.Activity#onOptionsItemSelected(MenuItem) 15551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Activity.onOptionsItemSelected(MenuItem)} 15651ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </li> 15751ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <li> 15851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Receiving a call to {@link android.app.Fragment#onOptionsItemSelected(MenuItem) 15951ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Fragment.onOptionsItemSelected(MenuItem)} 16051ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </li> 16151ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <li> 16251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Launching the {@link android.content.Intent} set via 16351ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * {@link MenuItem#setIntent(android.content.Intent) MenuItem.setIntent(android.content.Intent)} 16451ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </li> 16551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <li> 16651ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * Invoking this method. 16751ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </li> 16851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </ul> 16951ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </p> 17051ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * <p> 171961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * The default implementation does not perform any action and returns false. 17251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * </p> 173961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell */ 174961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell public boolean onPerformDefaultAction() { 175961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell return false; 176961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell } 177961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell 178961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell /** 179961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * Determines if this ActionProvider has a submenu associated with it. 180961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * 181961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * <p>Associated submenus will be shown when an action view is not. This 182961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * provider instance will receive a call to {@link #onPrepareSubMenu(SubMenu)} 183961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * after the call to {@link #onPerformDefaultAction()} and before a submenu is 184961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * displayed to the user. 185961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * 186961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * @return true if the item backed by this provider should have an associated submenu 187961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell */ 188961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell public boolean hasSubMenu() { 189961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell return false; 190961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell } 191961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell 192961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell /** 193961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * Called to prepare an associated submenu for the menu item backed by this ActionProvider. 194961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * 195961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * <p>if {@link #hasSubMenu()} returns true, this method will be called when the 196961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * menu item is selected to prepare the submenu for presentation to the user. Apps 197961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * may use this to create or alter submenu content right before display. 19851ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov * 199961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell * @param subMenu Submenu that will be displayed 20051ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov */ 201961dd11895ce72e59bca124ef5bea4e4c1183099Adam Powell public void onPrepareSubMenu(SubMenu subMenu) { 20251ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov } 203823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell 204823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell /** 205823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell * Notify the system that the visibility of an action view's sub-UI such as 206823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell * an anchored popup has changed. This will affect how other system 207823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell * visibility notifications occur. 208823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell * 209823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell * @hide Pending future API approval 210823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell */ 211823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell public void subUiVisibilityChanged(boolean isVisible) { 212823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell if (mSubUiVisibilityListener != null) { 213823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell mSubUiVisibilityListener.onSubUiVisibilityChanged(isVisible); 214823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell } 215823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell } 216823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell 217823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell /** 218823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell * @hide Internal use only 219823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell */ 220823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell public void setSubUiVisibilityListener(SubUiVisibilityListener listener) { 221823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell mSubUiVisibilityListener = listener; 222823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell } 223823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell 224823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell /** 22539d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * Set a listener to be notified when this ActionProvider's overridden visibility changes. 22639d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * This should only be used by MenuItem implementations. 22739d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * 22839d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * @param listener listener to set 22939d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell */ 23039d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell public void setVisibilityListener(VisibilityListener listener) { 23139d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell if (mVisibilityListener != null) { 23239d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell Log.w(TAG, "setVisibilityListener: Setting a new ActionProvider.VisibilityListener " + 23339d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell "when one is already set. Are you reusing this " + getClass().getSimpleName() + 23439d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell " instance while it is still in use somewhere else?"); 23539d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell } 23639d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell mVisibilityListener = listener; 23739d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell } 23839d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell 23939d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell /** 240823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell * @hide Internal use only 241823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell */ 242823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell public interface SubUiVisibilityListener { 243823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell public void onSubUiVisibilityChanged(boolean isVisible); 244823f074a73cfc23c40a7b576c71daa096ee9ed6aAdam Powell } 24539d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell 24639d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell /** 24739d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * Listens to changes in visibility as reported by {@link ActionProvider#refreshVisibility()}. 24839d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * 24939d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * @see ActionProvider#overridesItemVisibility() 25039d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell * @see ActionProvider#isVisible() 25139d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell */ 25239d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell public interface VisibilityListener { 25339d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell public void onActionProviderVisibilityChanged(boolean isVisible); 25439d5c6172503620ac3761148adac5fd7fa20d02dAdam Powell } 25551ac0e94a83cfccb5105aa14df1077729a5b4cccSvetoslav Ganov} 256