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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.widget;
import org.mozilla.gecko.menu.GeckoMenu;
import org.mozilla.gecko.menu.GeckoMenuInflater;
import org.mozilla.gecko.menu.MenuPanel;
import org.mozilla.gecko.menu.MenuPopup;
import android.content.Context;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
/**
* A PopupMenu that uses the custom GeckoMenu. This menu is
* usually tied to an anchor, and show as a dropdrown from the anchor.
*/
public class GeckoPopupMenu implements GeckoMenu.Callback,
GeckoMenu.MenuPresenter {
// An interface for listeners for dismissal.
public static interface OnDismissListener {
public boolean onDismiss(GeckoMenu menu);
}
// An interface for listeners for menu item click events.
public static interface OnMenuItemClickListener {
public boolean onMenuItemClick(MenuItem item);
}
// An interface for listeners for menu item long click events.
public static interface OnMenuItemLongClickListener {
public boolean onMenuItemLongClick(MenuItem item);
}
private View mAnchor;
private MenuPopup mMenuPopup;
private MenuPanel mMenuPanel;
private GeckoMenu mMenu;
private GeckoMenuInflater mMenuInflater;
private OnDismissListener mDismissListener;
private OnMenuItemClickListener mClickListener;
private OnMenuItemLongClickListener mLongClickListener;
public GeckoPopupMenu(Context context) {
initialize(context, null);
}
public GeckoPopupMenu(Context context, View anchor) {
initialize(context, anchor);
}
/**
* This method creates an empty menu and attaches the necessary listeners.
* If an anchor is supplied, it is stored as well.
*/
private void initialize(Context context, View anchor) {
mMenu = new GeckoMenu(context, null);
mMenu.setCallback(this);
mMenu.setMenuPresenter(this);
mMenuInflater = new GeckoMenuInflater(context);
mMenuPopup = new MenuPopup(context);
mMenuPanel = new MenuPanel(context, null);
mMenuPanel.addView(mMenu);
mMenuPopup.setPanelView(mMenuPanel);
setAnchor(anchor);
}
/**
* Returns the menu that is current being shown.
*
* @return The menu being shown.
*/
public GeckoMenu getMenu() {
return mMenu;
}
/**
* Returns the menu inflater that was used to create the menu.
*
* @return The menu inflater used.
*/
public MenuInflater getMenuInflater() {
return mMenuInflater;
}
/**
* Inflates a menu resource to the menu using the menu inflater.
*
* @param menuRes The menu resource to be inflated.
*/
public void inflate(int menuRes) {
if (menuRes > 0) {
mMenuInflater.inflate(menuRes, mMenu);
}
}
/**
* Set a different anchor after the menu is inflated.
*
* @param anchor The new anchor for the popup.
*/
public void setAnchor(View anchor) {
mAnchor = anchor;
// Reposition the popup if the anchor changes while it's showing.
if (mMenuPopup.isShowing()) {
mMenuPopup.dismiss();
mMenuPopup.showAsDropDown(mAnchor);
}
}
public void setOnDismissListener(OnDismissListener listener) {
mDismissListener = listener;
}
public void setOnMenuItemClickListener(OnMenuItemClickListener listener) {
mClickListener = listener;
}
public void setOnMenuItemLongClickListener(OnMenuItemLongClickListener listener) {
mLongClickListener = listener;
}
/**
* Show the inflated menu.
*/
public void show() {
if (!mMenuPopup.isShowing())
mMenuPopup.showAsDropDown(mAnchor);
}
/**
* Hide the inflated menu.
*/
public void dismiss() {
if (mMenuPopup.isShowing()) {
mMenuPopup.dismiss();
if (mDismissListener != null)
mDismissListener.onDismiss(mMenu);
}
}
@Override
public boolean onMenuItemClick(MenuItem item) {
if (mClickListener != null) {
return mClickListener.onMenuItemClick(item);
}
return false;
}
@Override
public boolean onMenuItemLongClick(MenuItem item) {
if (mLongClickListener != null) {
return mLongClickListener.onMenuItemLongClick(item);
}
return false;
}
@Override
public void openMenu() {
show();
}
@Override
public void showMenu(View menu) {
mMenuPanel.removeAllViews();
mMenuPanel.addView(menu);
openMenu();
}
@Override
public void closeMenu() {
dismiss();
}
}
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