gecko/mobile/android/base/menu/GeckoMenu.java
2013-12-18 18:49:53 -08:00

792 lines
25 KiB
Java

/* 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.menu;
import org.mozilla.gecko.R;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ActionProvider;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SubMenu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class GeckoMenu extends ListView
implements Menu,
AdapterView.OnItemClickListener,
GeckoMenuItem.OnShowAsActionChangedListener {
private static final String LOGTAG = "GeckoMenu";
/*
* A callback for a menu item selected event.
*/
public static interface Callback {
// Called when a menu item is selected, with the actual menu item as the argument.
public boolean onMenuItemSelected(MenuItem item);
}
/*
* An interface for a presenter to show the menu.
* Either an Activity or a View can be a presenter, that can watch for events
* and show/hide menu.
*/
public static interface MenuPresenter {
// Open the menu.
public void openMenu();
// Show the actual view contaning the menu items. This can either be a parent or sub-menu.
public void showMenu(View menu);
// Close the menu.
public void closeMenu();
}
/*
* An interface for a presenter of action-items.
* Either an Activity or a View can be a presenter, that can watch for events
* and add/remove action-items. If not ActionItemBarPresenter, the menu uses a
* DefaultActionItemBar, that shows the action-items as a header over list-view.
*/
public static interface ActionItemBarPresenter {
// Add an action-item.
public boolean addActionItem(View actionItem);
// Remove an action-item.
public void removeActionItem(View actionItem);
}
protected static final int NO_ID = 0;
// List of all menu items.
private List<GeckoMenuItem> mItems;
// Map of "always" action-items in action-bar and their views.
private Map<GeckoMenuItem, View> mPrimaryActionItems;
// Map of "ifRoom" action-items in action-bar and their views.
private Map<GeckoMenuItem, View> mSecondaryActionItems;
// Reference to a callback for menu events.
private Callback mCallback;
// Reference to menu presenter.
private MenuPresenter mMenuPresenter;
// Reference to "always" action-items bar in action-bar.
private ActionItemBarPresenter mPrimaryActionItemBar;
// Reference to "ifRoom" action-items bar in action-bar.
private final ActionItemBarPresenter mSecondaryActionItemBar;
// Adapter to hold the list of menu items.
private MenuItemsAdapter mAdapter;
// Show/hide icons in the list.
private boolean mShowIcons;
public GeckoMenu(Context context) {
this(context, null);
}
public GeckoMenu(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.geckoMenuListViewStyle);
}
public GeckoMenu(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
// Attach an adapter.
mAdapter = new MenuItemsAdapter();
setAdapter(mAdapter);
setOnItemClickListener(this);
mShowIcons = false;
mItems = new ArrayList<GeckoMenuItem>();
mPrimaryActionItems = new HashMap<GeckoMenuItem, View>();
mSecondaryActionItems = new HashMap<GeckoMenuItem, View>();
mPrimaryActionItemBar = (DefaultActionItemBar) LayoutInflater.from(context).inflate(R.layout.menu_action_bar, null);
mSecondaryActionItemBar = (DefaultActionItemBar) LayoutInflater.from(context).inflate(R.layout.menu_secondary_action_bar, null);
}
@Override
public MenuItem add(CharSequence title) {
GeckoMenuItem menuItem = new GeckoMenuItem(this, NO_ID, 0, title);
addItem(menuItem);
return menuItem;
}
@Override
public MenuItem add(int groupId, int itemId, int order, int titleRes) {
GeckoMenuItem menuItem = new GeckoMenuItem(this, itemId, order, titleRes);
addItem(menuItem);
return menuItem;
}
@Override
public MenuItem add(int titleRes) {
GeckoMenuItem menuItem = new GeckoMenuItem(this, NO_ID, 0, titleRes);
addItem(menuItem);
return menuItem;
}
@Override
public MenuItem add(int groupId, int itemId, int order, CharSequence title) {
GeckoMenuItem menuItem = new GeckoMenuItem(this, itemId, order, title);
addItem(menuItem);
return menuItem;
}
private void addItem(GeckoMenuItem menuItem) {
menuItem.setOnShowAsActionChangedListener(this);
mAdapter.addMenuItem(menuItem);
mItems.add(menuItem);
}
private boolean addActionItem(final GeckoMenuItem menuItem) {
menuItem.setOnShowAsActionChangedListener(this);
final View actionView = menuItem.getActionView();
final int actionEnum = menuItem.getActionEnum();
boolean added = false;
if (actionEnum == GeckoMenuItem.SHOW_AS_ACTION_ALWAYS) {
if (mPrimaryActionItems.size() == 0 &&
mPrimaryActionItemBar instanceof DefaultActionItemBar) {
// Reset the adapter before adding the header view to a list.
setAdapter(null);
addHeaderView((DefaultActionItemBar) mPrimaryActionItemBar);
setAdapter(mAdapter);
}
if (added = mPrimaryActionItemBar.addActionItem(actionView)) {
mPrimaryActionItems.put(menuItem, actionView);
mItems.add(menuItem);
}
} else if (actionEnum == GeckoMenuItem.SHOW_AS_ACTION_IF_ROOM) {
if (mSecondaryActionItems.size() == 0) {
// Reset the adapter before adding the header view to a list.
setAdapter(null);
addHeaderView((DefaultActionItemBar) mSecondaryActionItemBar);
setAdapter(mAdapter);
}
if (added = mSecondaryActionItemBar.addActionItem(actionView)) {
mSecondaryActionItems.put(menuItem, actionView);
mItems.add(menuItem);
}
}
// Set the listeners.
if (actionView instanceof MenuItemActionBar) {
((MenuItemActionBar) actionView).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
handleMenuItemClick(menuItem);
}
});
} else if (actionView instanceof MenuItemActionView) {
((MenuItemActionView) actionView).setMenuItemClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
handleMenuItemClick(menuItem);
}
});
}
return added;
}
@Override
public int addIntentOptions(int groupId, int itemId, int order, ComponentName caller, Intent[] specifics, Intent intent, int flags, MenuItem[] outSpecificItems) {
return 0;
}
@Override
public SubMenu addSubMenu(int groupId, int itemId, int order, CharSequence title) {
MenuItem menuItem = add(groupId, itemId, order, title);
return addSubMenu(menuItem);
}
@Override
public SubMenu addSubMenu(int groupId, int itemId, int order, int titleRes) {
MenuItem menuItem = add(groupId, itemId, order, titleRes);
return addSubMenu(menuItem);
}
@Override
public SubMenu addSubMenu(CharSequence title) {
MenuItem menuItem = add(title);
return addSubMenu(menuItem);
}
@Override
public SubMenu addSubMenu(int titleRes) {
MenuItem menuItem = add(titleRes);
return addSubMenu(menuItem);
}
private SubMenu addSubMenu(MenuItem menuItem) {
GeckoSubMenu subMenu = new GeckoSubMenu(getContext());
subMenu.setMenuItem(menuItem);
subMenu.setCallback(mCallback);
subMenu.setMenuPresenter(mMenuPresenter);
((GeckoMenuItem) menuItem).setSubMenu(subMenu);
return subMenu;
}
private void removePrimaryActionBarView() {
// Reset the adapter before removing the header view from a list.
setAdapter(null);
removeHeaderView((DefaultActionItemBar) mPrimaryActionItemBar);
setAdapter(mAdapter);
}
private void removeSecondaryActionBarView() {
// Reset the adapter before removing the header view from a list.
setAdapter(null);
removeHeaderView((DefaultActionItemBar) mSecondaryActionItemBar);
setAdapter(mAdapter);
}
@Override
public void clear() {
for (GeckoMenuItem menuItem : mItems) {
if (menuItem.hasSubMenu()) {
SubMenu sub = menuItem.getSubMenu();
if (sub == null) {
continue;
}
try {
sub.clear();
} catch (Exception ex) {
Log.e(LOGTAG, "Couldn't clear submenu.", ex);
}
}
}
mAdapter.clear();
mItems.clear();
/*
* Reinflating the menu will re-add any action items to the toolbar, so
* remove the old ones. This also ensures that any text associated with
* these is switched to the correct locale.
*/
if (mPrimaryActionItemBar != null) {
for (View item : mPrimaryActionItems.values()) {
mPrimaryActionItemBar.removeActionItem(item);
}
}
mPrimaryActionItems.clear();
if (mSecondaryActionItemBar != null) {
for (View item : mSecondaryActionItems.values()) {
mSecondaryActionItemBar.removeActionItem(item);
}
}
mSecondaryActionItems.clear();
// Remove the view, too -- the first addActionItem will re-add it,
// and this is simpler than changing that logic.
if (mPrimaryActionItemBar instanceof DefaultActionItemBar) {
removePrimaryActionBarView();
}
removeSecondaryActionBarView();
}
@Override
public void close() {
if (mMenuPresenter != null)
mMenuPresenter.closeMenu();
}
private void showMenu(View viewForMenu) {
if (mMenuPresenter != null)
mMenuPresenter.showMenu(viewForMenu);
}
@Override
public MenuItem findItem(int id) {
for (GeckoMenuItem menuItem : mItems) {
if (menuItem.getItemId() == id) {
return menuItem;
} else if (menuItem.hasSubMenu()) {
if (!menuItem.hasActionProvider()) {
SubMenu subMenu = menuItem.getSubMenu();
MenuItem item = subMenu.findItem(id);
if (item != null)
return item;
}
}
}
return null;
}
@Override
public MenuItem getItem(int index) {
if (index < mItems.size())
return mItems.get(index);
return null;
}
@Override
public boolean hasVisibleItems() {
for (GeckoMenuItem menuItem : mItems) {
if (menuItem.isVisible() &&
!mPrimaryActionItems.containsKey(menuItem) &&
!mSecondaryActionItems.containsKey(menuItem))
return true;
}
return false;
}
@Override
public boolean isShortcutKey(int keyCode, KeyEvent event) {
return true;
}
@Override
public boolean performIdentifierAction(int id, int flags) {
return false;
}
@Override
public boolean performShortcut(int keyCode, KeyEvent event, int flags) {
return false;
}
@Override
public void removeGroup(int groupId) {
}
@Override
public void removeItem(int id) {
GeckoMenuItem item = (GeckoMenuItem) findItem(id);
if (item == null)
return;
// Remove it from any sub-menu.
for (GeckoMenuItem menuItem : mItems) {
if (menuItem.hasSubMenu()) {
SubMenu subMenu = menuItem.getSubMenu();
if (subMenu != null && subMenu.findItem(id) != null) {
subMenu.removeItem(id);
return;
}
}
}
// Remove it from own menu.
if (mPrimaryActionItems.containsKey(item)) {
if (mPrimaryActionItemBar != null)
mPrimaryActionItemBar.removeActionItem(mPrimaryActionItems.get(item));
mPrimaryActionItems.remove(item);
mItems.remove(item);
if (mPrimaryActionItems.size() == 0 &&
mPrimaryActionItemBar instanceof DefaultActionItemBar) {
removePrimaryActionBarView();
}
return;
}
if (mSecondaryActionItems.containsKey(item)) {
if (mSecondaryActionItemBar != null)
mSecondaryActionItemBar.removeActionItem(mSecondaryActionItems.get(item));
mSecondaryActionItems.remove(item);
mItems.remove(item);
if (mSecondaryActionItems.size() == 0) {
removeSecondaryActionBarView();
}
return;
}
mAdapter.removeMenuItem(item);
mItems.remove(item);
}
@Override
public void setGroupCheckable(int group, boolean checkable, boolean exclusive) {
}
@Override
public void setGroupEnabled(int group, boolean enabled) {
}
@Override
public void setGroupVisible(int group, boolean visible) {
}
@Override
public void setQwertyMode(boolean isQwerty) {
}
@Override
public int size() {
return mItems.size();
}
@Override
public boolean hasActionItemBar() {
return (mPrimaryActionItemBar != null) && (mSecondaryActionItemBar != null);
}
@Override
public void onShowAsActionChanged(GeckoMenuItem item) {
removeItem(item.getItemId());
if (item.isActionItem() && addActionItem(item)) {
return;
}
addItem(item);
}
public void onItemChanged(GeckoMenuItem item) {
if (item.isActionItem()) {
final View actionView;
if (item.getActionEnum() == GeckoMenuItem.SHOW_AS_ACTION_ALWAYS) {
actionView = mPrimaryActionItems.get(item);
} else {
actionView = mSecondaryActionItems.get(item);
}
if (actionView != null) {
// The update could be coming from the background thread.
// Post a runnable on the UI thread of the view for it to update.
final GeckoMenuItem menuItem = item;
actionView.post(new Runnable() {
@Override
public void run() {
if (menuItem.isVisible()) {
actionView.setVisibility(View.VISIBLE);
if (actionView instanceof MenuItemActionBar) {
((MenuItemActionBar) actionView).initialize(menuItem);
} else {
((MenuItemActionView) actionView).initialize(menuItem);
}
} else {
actionView.setVisibility(View.GONE);
}
}
});
}
} else {
mAdapter.notifyDataSetChanged();
}
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// We might be showing headers. Account them while using the position.
position -= getHeaderViewsCount();
GeckoMenuItem item = mAdapter.getItem(position);
handleMenuItemClick(item);
}
private void handleMenuItemClick(GeckoMenuItem item) {
if (!item.isEnabled())
return;
if (item.invoke()) {
close();
} else if (item.hasSubMenu()) {
// Refresh the submenu for the provider.
ActionProvider provider = item.getActionProvider();
if (provider != null) {
GeckoSubMenu subMenu = new GeckoSubMenu(getContext());
subMenu.setShowIcons(true);
provider.onPrepareSubMenu(subMenu);
item.setSubMenu(subMenu);
}
// Show the submenu.
GeckoSubMenu subMenu = (GeckoSubMenu) item.getSubMenu();
showMenu(subMenu);
} else {
close();
mCallback.onMenuItemSelected(item);
}
}
public Callback getCallback() {
return mCallback;
}
public MenuPresenter getMenuPresenter() {
return mMenuPresenter;
}
public void setCallback(Callback callback) {
mCallback = callback;
// Update the submenus just in case this changes on the fly.
for (GeckoMenuItem menuItem : mItems) {
if (menuItem.hasSubMenu()) {
GeckoSubMenu subMenu = (GeckoSubMenu) menuItem.getSubMenu();
subMenu.setCallback(mCallback);
}
}
}
public void setMenuPresenter(MenuPresenter presenter) {
mMenuPresenter = presenter;
// Update the submenus just in case this changes on the fly.
for (GeckoMenuItem menuItem : mItems) {
if (menuItem.hasSubMenu()) {
GeckoSubMenu subMenu = (GeckoSubMenu) menuItem.getSubMenu();
subMenu.setMenuPresenter(mMenuPresenter);
}
}
}
public void setActionItemBarPresenter(ActionItemBarPresenter presenter) {
mPrimaryActionItemBar = presenter;
}
public void setShowIcons(boolean show) {
if (mShowIcons != show) {
mShowIcons = show;
mAdapter.notifyDataSetChanged();
}
}
// Action Items are added to the header view by default.
// URL bar can register itself as a presenter, in case it has a different place to show them.
public static class DefaultActionItemBar extends LinearLayout
implements ActionItemBarPresenter {
private final int mRowHeight;
private float mWeightSum;
public DefaultActionItemBar(Context context) {
this(context, null);
}
public DefaultActionItemBar(Context context, AttributeSet attrs) {
super(context, attrs);
mRowHeight = getResources().getDimensionPixelSize(R.dimen.menu_item_row_height);
}
@Override
public boolean addActionItem(View actionItem) {
ViewGroup.LayoutParams actualParams = actionItem.getLayoutParams();
LinearLayout.LayoutParams params;
if (actualParams != null) {
params = new LinearLayout.LayoutParams(actionItem.getLayoutParams());
params.width = 0;
} else {
params = new LinearLayout.LayoutParams(0, mRowHeight);
}
if (actionItem instanceof MenuItemActionView) {
params.weight = ((MenuItemActionView) actionItem).getChildCount();
} else {
params.weight = 1.0f;
}
mWeightSum += params.weight;
actionItem.setLayoutParams(params);
addView(actionItem);
setWeightSum(mWeightSum);
return true;
}
@Override
public void removeActionItem(View actionItem) {
if (indexOfChild(actionItem) != -1) {
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) actionItem.getLayoutParams();
mWeightSum -= params.weight;
removeView(actionItem);
}
}
}
// Adapter to bind menu items to the list.
private class MenuItemsAdapter extends BaseAdapter {
private static final int VIEW_TYPE_DEFAULT = 0;
private static final int VIEW_TYPE_ACTION_MODE = 1;
private List<GeckoMenuItem> mItems;
public MenuItemsAdapter() {
mItems = new ArrayList<GeckoMenuItem>();
}
@Override
public int getCount() {
if (mItems == null)
return 0;
int visibleCount = 0;
for (GeckoMenuItem item : mItems) {
if (item.isVisible())
visibleCount++;
}
return visibleCount;
}
@Override
public GeckoMenuItem getItem(int position) {
for (GeckoMenuItem item : mItems) {
if (item.isVisible()) {
position--;
if (position < 0)
return item;
}
}
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
GeckoMenuItem item = getItem(position);
GeckoMenuItem.Layout view = null;
// Try to re-use the view.
if (convertView == null && getItemViewType(position) == VIEW_TYPE_DEFAULT) {
view = new MenuItemDefault(parent.getContext(), null);
} else {
view = (GeckoMenuItem.Layout) convertView;
}
if (view == null || view instanceof MenuItemActionView) {
// Always get from the menu item.
// This will ensure that the default activity is refreshed.
view = (MenuItemActionView) item.getActionView();
// ListView will not perform an item click if the row has a focusable view in it.
// Hence, forward the click event on the menu item in the action-view to the ListView.
final View actionView = (View) view;
final int pos = position;
final long id = getItemId(position);
((MenuItemActionView) view).setMenuItemClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
GeckoMenu listView = GeckoMenu.this;
listView.performItemClick(actionView, pos + listView.getHeaderViewsCount(), id);
}
});
}
// Initialize the view.
view.setShowIcon(mShowIcons);
view.initialize(item);
return (View) view;
}
@Override
public int getItemViewType(int position) {
return getItem(position).getActionProvider() == null ? VIEW_TYPE_DEFAULT : VIEW_TYPE_ACTION_MODE;
}
@Override
public int getViewTypeCount() {
return 2;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean areAllItemsEnabled() {
for (GeckoMenuItem item : mItems) {
if (!item.isEnabled())
return false;
}
return true;
}
@Override
public boolean isEnabled(int position) {
return getItem(position).isEnabled();
}
public void addMenuItem(GeckoMenuItem menuItem) {
if (mItems.contains(menuItem))
return;
// Insert it in proper order.
int index = 0;
for (GeckoMenuItem item : mItems) {
if (item.getOrder() > menuItem.getOrder()) {
mItems.add(index, menuItem);
notifyDataSetChanged();
return;
} else {
index++;
}
}
// Add the menuItem at the end.
mItems.add(menuItem);
notifyDataSetChanged();
}
public void removeMenuItem(GeckoMenuItem menuItem) {
// Remove it from the list.
mItems.remove(menuItem);
notifyDataSetChanged();
}
public void clear() {
mItems.clear();
notifyDataSetChanged();
}
public GeckoMenuItem getMenuItem(int id) {
for (GeckoMenuItem item : mItems) {
if (item.getItemId() == id)
return item;
}
return null;
}
}
}