ActionMenuItemView.java revision c619e74cc62678cef09b5f92e87e762a1f02aab7
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.internal.view.menu; 18 19import android.content.Context; 20import android.graphics.drawable.Drawable; 21import android.text.TextUtils; 22import android.util.AttributeSet; 23import android.view.View; 24import android.widget.Button; 25import android.widget.ImageButton; 26import android.widget.LinearLayout; 27 28/** 29 * @hide 30 */ 31public class ActionMenuItemView extends LinearLayout 32 implements MenuView.ItemView, View.OnClickListener, ActionMenuView.ActionMenuChildView { 33 private static final String TAG = "ActionMenuItemView"; 34 35 private MenuItemImpl mItemData; 36 private CharSequence mTitle; 37 private MenuBuilder.ItemInvoker mItemInvoker; 38 39 private ImageButton mImageButton; 40 private Button mTextButton; 41 42 public ActionMenuItemView(Context context) { 43 this(context, null); 44 } 45 46 public ActionMenuItemView(Context context, AttributeSet attrs) { 47 super(context, attrs); 48 } 49 50 public ActionMenuItemView(Context context, AttributeSet attrs, int defStyle) { 51 super(context, attrs, defStyle); 52 } 53 54 @Override 55 public void onFinishInflate() { 56 mImageButton = (ImageButton) findViewById(com.android.internal.R.id.imageButton); 57 mTextButton = (Button) findViewById(com.android.internal.R.id.textButton); 58 mImageButton.setOnClickListener(this); 59 mTextButton.setOnClickListener(this); 60 setOnClickListener(this); 61 } 62 63 public MenuItemImpl getItemData() { 64 return mItemData; 65 } 66 67 public void initialize(MenuItemImpl itemData, int menuType) { 68 mItemData = itemData; 69 70 setIcon(itemData.getIcon()); 71 setTitle(itemData.getTitleForItemView(this)); // Title only takes effect if there is no icon 72 setId(itemData.getItemId()); 73 74 setVisibility(itemData.isVisible() ? View.VISIBLE : View.GONE); 75 setEnabled(itemData.isEnabled()); 76 } 77 78 @Override 79 public void setEnabled(boolean enabled) { 80 super.setEnabled(enabled); 81 mImageButton.setEnabled(enabled); 82 mTextButton.setEnabled(enabled); 83 } 84 85 public void onClick(View v) { 86 if (mItemInvoker != null) { 87 mItemInvoker.invokeItem(mItemData); 88 } 89 } 90 91 public void setItemInvoker(MenuBuilder.ItemInvoker invoker) { 92 mItemInvoker = invoker; 93 } 94 95 public boolean prefersCondensedTitle() { 96 return true; 97 } 98 99 public void setCheckable(boolean checkable) { 100 // TODO Support checkable action items 101 } 102 103 public void setChecked(boolean checked) { 104 // TODO Support checkable action items 105 } 106 107 private void updateTextButtonVisibility() { 108 boolean visible = !TextUtils.isEmpty(mTextButton.getText()); 109 visible = visible && (mImageButton.getDrawable() == null || mItemData.showsTextAsAction()); 110 mTextButton.setVisibility(visible ? VISIBLE : GONE); 111 } 112 113 public void setIcon(Drawable icon) { 114 mImageButton.setImageDrawable(icon); 115 if (icon != null) { 116 mImageButton.setVisibility(VISIBLE); 117 } else { 118 mImageButton.setVisibility(GONE); 119 } 120 121 updateTextButtonVisibility(); 122 } 123 124 public boolean hasText() { 125 return mTextButton.getVisibility() != GONE; 126 } 127 128 public void setShortcut(boolean showShortcut, char shortcutKey) { 129 // Action buttons don't show text for shortcut keys. 130 } 131 132 public void setTitle(CharSequence title) { 133 mTitle = title; 134 135 // populate accessibility description with title 136 setContentDescription(title); 137 138 mTextButton.setText(mTitle); 139 140 updateTextButtonVisibility(); 141 } 142 143 public boolean showsIcon() { 144 return true; 145 } 146 147 public boolean needsDividerBefore() { 148 return hasText() && mItemData.getIcon() == null; 149 } 150 151 public boolean needsDividerAfter() { 152 return hasText(); 153 } 154} 155