The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 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 | |
| 17 | package com.android.internal.view.menu; |
| 18 | |
| 19 | import com.android.internal.view.menu.MenuBuilder.ItemInvoker; |
| 20 | |
| 21 | import android.content.Context; |
| 22 | import android.content.res.TypedArray; |
| 23 | import android.graphics.Rect; |
| 24 | import android.graphics.drawable.Drawable; |
| 25 | import android.util.AttributeSet; |
| 26 | import android.view.Gravity; |
| 27 | import android.view.SoundEffectConstants; |
| 28 | import android.view.View; |
| 29 | import android.view.ViewDebug; |
| 30 | import android.widget.TextView; |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 31 | import android.text.Layout; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 32 | |
| 33 | /** |
| 34 | * The item view for each item in the {@link IconMenuView}. |
| 35 | */ |
| 36 | public final class IconMenuItemView extends TextView implements MenuView.ItemView { |
| 37 | |
| 38 | private static final int NO_ALPHA = 0xFF; |
| 39 | |
| 40 | private IconMenuView mIconMenuView; |
| 41 | |
| 42 | private ItemInvoker mItemInvoker; |
| 43 | private MenuItemImpl mItemData; |
| 44 | |
| 45 | private Drawable mIcon; |
| 46 | |
| 47 | private int mTextAppearance; |
| 48 | private Context mTextAppearanceContext; |
| 49 | |
| 50 | private float mDisabledAlpha; |
| 51 | |
| 52 | private Rect mPositionIconAvailable = new Rect(); |
| 53 | private Rect mPositionIconOutput = new Rect(); |
| 54 | |
| 55 | private boolean mShortcutCaptionMode; |
| 56 | private String mShortcutCaption; |
| 57 | |
| 58 | private static String sPrependShortcutLabel; |
| 59 | |
| 60 | public IconMenuItemView(Context context, AttributeSet attrs, int defStyle) { |
| 61 | super(context, attrs); |
| 62 | |
| 63 | if (sPrependShortcutLabel == null) { |
| 64 | /* |
| 65 | * Views should only be constructed from the UI thread, so no |
| 66 | * synchronization needed |
| 67 | */ |
| 68 | sPrependShortcutLabel = getResources().getString( |
| 69 | com.android.internal.R.string.prepend_shortcut_label); |
| 70 | } |
| 71 | |
| 72 | TypedArray a = |
| 73 | context.obtainStyledAttributes( |
| 74 | attrs, com.android.internal.R.styleable.MenuView, defStyle, 0); |
| 75 | |
| 76 | mDisabledAlpha = a.getFloat( |
| 77 | com.android.internal.R.styleable.MenuView_itemIconDisabledAlpha, 0.8f); |
| 78 | mTextAppearance = a.getResourceId(com.android.internal.R.styleable. |
| 79 | MenuView_itemTextAppearance, -1); |
| 80 | mTextAppearanceContext = context; |
| 81 | |
| 82 | a.recycle(); |
| 83 | } |
| 84 | |
| 85 | public IconMenuItemView(Context context, AttributeSet attrs) { |
| 86 | this(context, attrs, 0); |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Initializes with the provided title and icon |
| 91 | * @param title The title of this item |
| 92 | * @param icon The icon of this item |
| 93 | */ |
| 94 | void initialize(CharSequence title, Drawable icon) { |
| 95 | setClickable(true); |
| 96 | setFocusable(true); |
| 97 | |
| 98 | if (mTextAppearance != -1) { |
| 99 | setTextAppearance(mTextAppearanceContext, mTextAppearance); |
| 100 | } |
| 101 | |
| 102 | setTitle(title); |
| 103 | setIcon(icon); |
| 104 | } |
| 105 | |
| 106 | public void initialize(MenuItemImpl itemData, int menuType) { |
| 107 | mItemData = itemData; |
| 108 | |
| 109 | initialize(itemData.getTitleForItemView(this), itemData.getIcon()); |
| 110 | |
| 111 | setVisibility(itemData.isVisible() ? View.VISIBLE : View.GONE); |
| 112 | setEnabled(itemData.isEnabled()); |
| 113 | } |
| 114 | |
Adam Powell | 696cba5 | 2011-03-29 10:38:16 -0700 | [diff] [blame] | 115 | public void setItemData(MenuItemImpl data) { |
| 116 | mItemData = data; |
| 117 | } |
| 118 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 119 | @Override |
| 120 | public boolean performClick() { |
| 121 | // Let the view's click listener have top priority (the More button relies on this) |
| 122 | if (super.performClick()) { |
| 123 | return true; |
| 124 | } |
| 125 | |
| 126 | if ((mItemInvoker != null) && (mItemInvoker.invokeItem(mItemData))) { |
| 127 | playSoundEffect(SoundEffectConstants.CLICK); |
| 128 | return true; |
| 129 | } else { |
| 130 | return false; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | public void setTitle(CharSequence title) { |
| 135 | |
| 136 | if (mShortcutCaptionMode) { |
| 137 | /* |
| 138 | * Don't set the title directly since it will replace the |
| 139 | * shortcut+title being shown. Instead, re-set the shortcut caption |
| 140 | * mode so the new title is shown. |
| 141 | */ |
| 142 | setCaptionMode(true); |
| 143 | |
| 144 | } else if (title != null) { |
| 145 | setText(title); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | void setCaptionMode(boolean shortcut) { |
| 150 | /* |
| 151 | * If there is no item model, don't do any of the below (for example, |
| 152 | * the 'More' item doesn't have a model) |
| 153 | */ |
| 154 | if (mItemData == null) { |
| 155 | return; |
| 156 | } |
| 157 | |
| 158 | mShortcutCaptionMode = shortcut && (mItemData.shouldShowShortcut()); |
| 159 | |
| 160 | CharSequence text = mItemData.getTitleForItemView(this); |
| 161 | |
| 162 | if (mShortcutCaptionMode) { |
| 163 | |
| 164 | if (mShortcutCaption == null) { |
| 165 | mShortcutCaption = mItemData.getShortcutLabel(); |
| 166 | } |
| 167 | |
| 168 | text = mShortcutCaption; |
| 169 | } |
| 170 | |
| 171 | setText(text); |
| 172 | } |
| 173 | |
| 174 | public void setIcon(Drawable icon) { |
| 175 | mIcon = icon; |
| 176 | |
| 177 | if (icon != null) { |
| 178 | |
| 179 | /* Set the bounds of the icon since setCompoundDrawables needs it. */ |
| 180 | icon.setBounds(0, 0, icon.getIntrinsicWidth(), icon.getIntrinsicHeight()); |
| 181 | |
| 182 | // Set the compound drawables |
| 183 | setCompoundDrawables(null, icon, null, null); |
| 184 | |
| 185 | // When there is an icon, make sure the text is at the bottom |
| 186 | setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL); |
| 187 | |
| 188 | /* |
| 189 | * Request a layout to reposition the icon. The positioning of icon |
| 190 | * depends on this TextView's line bounds, which is only available |
| 191 | * after a layout. |
| 192 | */ |
| 193 | requestLayout(); |
| 194 | } else { |
| 195 | setCompoundDrawables(null, null, null, null); |
| 196 | |
| 197 | // When there is no icon, make sure the text is centered vertically |
| 198 | setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL); |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | public void setItemInvoker(ItemInvoker itemInvoker) { |
| 203 | mItemInvoker = itemInvoker; |
| 204 | } |
| 205 | |
| 206 | @ViewDebug.CapturedViewProperty(retrieveReturn = true) |
| 207 | public MenuItemImpl getItemData() { |
| 208 | return mItemData; |
| 209 | } |
| 210 | |
| 211 | @Override |
| 212 | public void setVisibility(int v) { |
| 213 | super.setVisibility(v); |
| 214 | |
| 215 | if (mIconMenuView != null) { |
| 216 | // On visibility change, mark the IconMenuView to refresh itself eventually |
| 217 | mIconMenuView.markStaleChildren(); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | void setIconMenuView(IconMenuView iconMenuView) { |
| 222 | mIconMenuView = iconMenuView; |
| 223 | } |
| 224 | |
| 225 | @Override |
| 226 | protected void drawableStateChanged() { |
| 227 | super.drawableStateChanged(); |
| 228 | |
| 229 | if (mItemData != null && mIcon != null) { |
| 230 | // When disabled, the not-focused state and the pressed state should |
| 231 | // drop alpha on the icon |
| 232 | final boolean isInAlphaState = !mItemData.isEnabled() && (isPressed() || !isFocused()); |
| 233 | mIcon.setAlpha(isInAlphaState ? (int) (mDisabledAlpha * NO_ALPHA) : NO_ALPHA); |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | @Override |
| 238 | protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| 239 | super.onLayout(changed, left, top, right, bottom); |
| 240 | |
| 241 | positionIcon(); |
| 242 | } |
| 243 | |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 244 | @Override |
| 245 | protected void onTextChanged(CharSequence text, int start, int before, int after) { |
| 246 | super.onTextChanged(text, start, before, after); |
| 247 | |
| 248 | // our layout params depend on the length of the text |
| 249 | setLayoutParams(getTextAppropriateLayoutParams()); |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * @return layout params appropriate for this view. If layout params already exist, it will |
| 254 | * augment them to be appropriate to the current text size. |
| 255 | */ |
| 256 | IconMenuView.LayoutParams getTextAppropriateLayoutParams() { |
| 257 | IconMenuView.LayoutParams lp = (IconMenuView.LayoutParams) getLayoutParams(); |
| 258 | if (lp == null) { |
| 259 | // Default layout parameters |
| 260 | lp = new IconMenuView.LayoutParams( |
Romain Guy | 980a938 | 2010-01-08 15:06:28 -0800 | [diff] [blame] | 261 | IconMenuView.LayoutParams.MATCH_PARENT, IconMenuView.LayoutParams.MATCH_PARENT); |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 262 | } |
| 263 | |
| 264 | // Set the desired width of item |
| 265 | lp.desiredWidth = (int) Layout.getDesiredWidth(getText(), getPaint()); |
| 266 | |
| 267 | return lp; |
| 268 | } |
| 269 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 270 | /** |
| 271 | * Positions the icon vertically (horizontal centering is taken care of by |
| 272 | * the TextView's gravity). |
| 273 | */ |
| 274 | private void positionIcon() { |
| 275 | |
| 276 | if (mIcon == null) { |
| 277 | return; |
| 278 | } |
| 279 | |
| 280 | // We reuse the output rectangle as a temp rect |
| 281 | Rect tmpRect = mPositionIconOutput; |
| 282 | getLineBounds(0, tmpRect); |
| 283 | mPositionIconAvailable.set(0, 0, getWidth(), tmpRect.top); |
Fabrice Di Meglio | e56ffdc | 2012-09-23 14:51:16 -0700 | [diff] [blame] | 284 | final int layoutDirection = getLayoutDirection(); |
Fabrice Di Meglio | aac0d4e | 2012-07-19 19:21:26 -0700 | [diff] [blame] | 285 | Gravity.apply(Gravity.CENTER_VERTICAL | Gravity.START, mIcon.getIntrinsicWidth(), mIcon |
Fabrice Di Meglio | c005322 | 2011-06-13 12:16:51 -0700 | [diff] [blame] | 286 | .getIntrinsicHeight(), mPositionIconAvailable, mPositionIconOutput, |
| 287 | layoutDirection); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 288 | mIcon.setBounds(mPositionIconOutput); |
| 289 | } |
| 290 | |
| 291 | public void setCheckable(boolean checkable) { |
| 292 | } |
| 293 | |
| 294 | public void setChecked(boolean checked) { |
| 295 | } |
| 296 | |
| 297 | public void setShortcut(boolean showShortcut, char shortcutKey) { |
| 298 | |
| 299 | if (mShortcutCaptionMode) { |
| 300 | /* |
| 301 | * Shortcut has changed and we're showing it right now, need to |
| 302 | * update (clear the old one first). |
| 303 | */ |
| 304 | mShortcutCaption = null; |
| 305 | setCaptionMode(true); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | public boolean prefersCondensedTitle() { |
| 310 | return true; |
| 311 | } |
| 312 | |
| 313 | public boolean showsIcon() { |
| 314 | return true; |
| 315 | } |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 316 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 317 | } |