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comparison: mobile/android/base/widget/GeckoPopupMenu.java
mobile/android/base/widget/GeckoPopupMenu.java
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| 1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.widget; | |
| 7 | |
| 8 import org.mozilla.gecko.menu.GeckoMenu; | |
| 9 import org.mozilla.gecko.menu.GeckoMenuInflater; | |
| 10 import org.mozilla.gecko.menu.MenuPanel; | |
| 11 import org.mozilla.gecko.menu.MenuPopup; | |
| 12 | |
| 13 import android.content.Context; | |
| 14 import android.view.Menu; | |
| 15 import android.view.MenuInflater; | |
| 16 import android.view.MenuItem; | |
| 17 import android.view.View; | |
| 18 | |
| 19 /** | |
| 20 * A PopupMenu that uses the custom GeckoMenu. This menu is | |
| 21 * usually tied to an anchor, and show as a dropdrown from the anchor. | |
| 22 */ | |
| 23 public class GeckoPopupMenu implements GeckoMenu.Callback, | |
| 24 GeckoMenu.MenuPresenter { | |
| 25 | |
| 26 // An interface for listeners for dismissal. | |
| 27 public static interface OnDismissListener { | |
| 28 public boolean onDismiss(GeckoMenu menu); | |
| 29 } | |
| 30 | |
| 31 // An interface for listeners for menu item click events. | |
| 32 public static interface OnMenuItemClickListener { | |
| 33 public boolean onMenuItemClick(MenuItem item); | |
| 34 } | |
| 35 | |
| 36 private View mAnchor; | |
| 37 | |
| 38 private MenuPopup mMenuPopup; | |
| 39 private MenuPanel mMenuPanel; | |
| 40 | |
| 41 private GeckoMenu mMenu; | |
| 42 private GeckoMenuInflater mMenuInflater; | |
| 43 | |
| 44 private OnDismissListener mDismissListener; | |
| 45 private OnMenuItemClickListener mClickListener; | |
| 46 | |
| 47 public GeckoPopupMenu(Context context) { | |
| 48 initialize(context, null); | |
| 49 } | |
| 50 | |
| 51 public GeckoPopupMenu(Context context, View anchor) { | |
| 52 initialize(context, anchor); | |
| 53 } | |
| 54 | |
| 55 /** | |
| 56 * This method creates an empty menu and attaches the necessary listeners. | |
| 57 * If an anchor is supplied, it is stored as well. | |
| 58 */ | |
| 59 private void initialize(Context context, View anchor) { | |
| 60 mMenu = new GeckoMenu(context, null); | |
| 61 mMenu.setCallback(this); | |
| 62 mMenu.setMenuPresenter(this); | |
| 63 mMenuInflater = new GeckoMenuInflater(context); | |
| 64 | |
| 65 mMenuPopup = new MenuPopup(context); | |
| 66 mMenuPanel = new MenuPanel(context, null); | |
| 67 | |
| 68 mMenuPanel.addView(mMenu); | |
| 69 mMenuPopup.setPanelView(mMenuPanel); | |
| 70 | |
| 71 setAnchor(anchor); | |
| 72 } | |
| 73 | |
| 74 /** | |
| 75 * Returns the menu that is current being shown. | |
| 76 * | |
| 77 * @return The menu being shown. | |
| 78 */ | |
| 79 public Menu getMenu() { | |
| 80 return mMenu; | |
| 81 } | |
| 82 | |
| 83 /** | |
| 84 * Returns the menu inflater that was used to create the menu. | |
| 85 * | |
| 86 * @return The menu inflater used. | |
| 87 */ | |
| 88 public MenuInflater getMenuInflater() { | |
| 89 return mMenuInflater; | |
| 90 } | |
| 91 | |
| 92 /** | |
| 93 * Inflates a menu resource to the menu using the menu inflater. | |
| 94 * | |
| 95 * @param menuRes The menu resource to be inflated. | |
| 96 */ | |
| 97 public void inflate(int menuRes) { | |
| 98 if (menuRes > 0) { | |
| 99 mMenuInflater.inflate(menuRes, mMenu); | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 /** | |
| 104 * Set a different anchor after the menu is inflated. | |
| 105 * | |
| 106 * @param anchor The new anchor for the popup. | |
| 107 */ | |
| 108 public void setAnchor(View anchor) { | |
| 109 mAnchor = anchor; | |
| 110 } | |
| 111 | |
| 112 public void setOnDismissListener(OnDismissListener listener) { | |
| 113 mDismissListener = listener; | |
| 114 } | |
| 115 | |
| 116 public void setOnMenuItemClickListener(OnMenuItemClickListener listener) { | |
| 117 mClickListener = listener; | |
| 118 } | |
| 119 | |
| 120 /** | |
| 121 * Show the inflated menu. | |
| 122 */ | |
| 123 public void show() { | |
| 124 if (!mMenuPopup.isShowing()) | |
| 125 mMenuPopup.showAsDropDown(mAnchor); | |
| 126 } | |
| 127 | |
| 128 /** | |
| 129 * Hide the inflated menu. | |
| 130 */ | |
| 131 public void dismiss() { | |
| 132 if (mMenuPopup.isShowing()) { | |
| 133 mMenuPopup.dismiss(); | |
| 134 | |
| 135 if (mDismissListener != null) | |
| 136 mDismissListener.onDismiss(mMenu); | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 @Override | |
| 141 public boolean onMenuItemSelected(MenuItem item) { | |
| 142 if (mClickListener != null) | |
| 143 return mClickListener.onMenuItemClick(item); | |
| 144 | |
| 145 return false; | |
| 146 } | |
| 147 | |
| 148 @Override | |
| 149 public void openMenu() { | |
| 150 show(); | |
| 151 } | |
| 152 | |
| 153 @Override | |
| 154 public void showMenu(View menu) { | |
| 155 mMenuPanel.removeAllViews(); | |
| 156 mMenuPanel.addView(menu); | |
| 157 | |
| 158 openMenu(); | |
| 159 } | |
| 160 | |
| 161 @Override | |
| 162 public void closeMenu() { | |
| 163 dismiss(); | |
| 164 } | |
| 165 } |
