mirror of
https://github.com/mozilla/gecko-dev.git
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560 lines
19 KiB
Java
560 lines
19 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.gecko;
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import org.mozilla.gecko.PropertyAnimator.Property;
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import android.content.Context;
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import android.graphics.Rect;
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import android.graphics.drawable.Drawable;
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import android.text.TextUtils;
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import android.util.AttributeSet;
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import android.view.LayoutInflater;
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import android.view.MotionEvent;
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import android.view.VelocityTracker;
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import android.view.View;
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import android.view.ViewConfiguration;
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import android.view.ViewGroup;
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import android.widget.AbsListView;
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import android.widget.AbsListView.RecyclerListener;
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import android.widget.BaseAdapter;
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import android.widget.Button;
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import android.widget.ImageButton;
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import android.widget.ImageView;
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import android.widget.LinearLayout;
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import android.widget.ListView;
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import android.widget.TextView;
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import java.util.ArrayList;
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import java.util.List;
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public class TabsTray extends LinearLayout
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implements TabsPanel.PanelView {
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private static final String LOGTAG = "GeckoTabsTray";
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private Context mContext;
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private TabsPanel mTabsPanel;
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private static ListView mList;
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private TabsAdapter mTabsAdapter;
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private List<View> mPendingClosedTabs;
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private int mCloseAnimationCount;
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private TabSwipeGestureListener mSwipeListener;
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// Time to animate non-flinged tabs of screen, in milliseconds
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private static final int ANIMATION_DURATION = 250;
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private static final String ABOUT_HOME = "about:home";
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public TabsTray(Context context, AttributeSet attrs) {
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super(context, attrs);
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mContext = context;
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LayoutInflater.from(context).inflate(R.layout.tabs_tray, this);
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mCloseAnimationCount = 0;
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mPendingClosedTabs = new ArrayList<View>();
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mList = (ListView) findViewById(R.id.list);
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mList.setItemsCanFocus(true);
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mTabsAdapter = new TabsAdapter(mContext);
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mList.setAdapter(mTabsAdapter);
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mSwipeListener = new TabSwipeGestureListener(mList);
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mList.setOnTouchListener(mSwipeListener);
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mList.setOnScrollListener(mSwipeListener.makeScrollListener());
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mList.setRecyclerListener(new RecyclerListener() {
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@Override
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public void onMovedToScrapHeap(View view) {
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TabRow row = (TabRow) view.getTag();
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row.thumbnail.setImageDrawable(null);
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}
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});
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}
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@Override
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public ViewGroup getLayout() {
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return this;
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}
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@Override
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public void setTabsPanel(TabsPanel panel) {
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mTabsPanel = panel;
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}
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@Override
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public void show() {
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Tabs.getInstance().refreshThumbnails();
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Tabs.registerOnTabsChangedListener(mTabsAdapter);
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mTabsAdapter.refreshTabsData();
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}
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@Override
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public void hide() {
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Tabs.unregisterOnTabsChangedListener(mTabsAdapter);
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GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Tab:Screenshot:Cancel",""));
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mTabsAdapter.clear();
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}
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private void autoHidePanel() {
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mTabsPanel.autoHidePanel();
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}
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// ViewHolder for a row in the list
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private class TabRow {
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int id;
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TextView title;
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ImageView thumbnail;
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ImageButton close;
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LinearLayout info;
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public TabRow(View view) {
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info = (LinearLayout) view;
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title = (TextView) view.findViewById(R.id.title);
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thumbnail = (ImageView) view.findViewById(R.id.thumbnail);
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close = (ImageButton) view.findViewById(R.id.close);
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}
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}
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// Adapter to bind tabs into a list
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private class TabsAdapter extends BaseAdapter implements Tabs.OnTabsChangedListener {
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private Context mContext;
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private ArrayList<Tab> mTabs;
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private LayoutInflater mInflater;
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private Button.OnClickListener mOnCloseClickListener;
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public TabsAdapter(Context context) {
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mContext = context;
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mInflater = LayoutInflater.from(mContext);
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mOnCloseClickListener = new Button.OnClickListener() {
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public void onClick(View v) {
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TabRow tab = (TabRow) v.getTag();
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animateClose(tab.info, tab.info.getWidth());
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}
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};
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}
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public void onTabChanged(Tab tab, Tabs.TabEvents msg, Object data) {
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switch (msg) {
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case ADDED:
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// Refresh the list to make sure the new tab is added in the right position.
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refreshTabsData();
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break;
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case CLOSED:
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removeTab(tab);
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break;
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case SELECTED:
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// Update the selected position, then fall through...
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updateSelectedPosition();
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case UNSELECTED:
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// We just need to update the style for the unselected tab...
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case THUMBNAIL:
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case TITLE:
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View view = mList.getChildAt(getPositionForTab(tab) - mList.getFirstVisiblePosition());
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if (view == null)
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return;
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TabRow row = (TabRow) view.getTag();
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assignValues(row, tab);
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break;
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}
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}
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private void refreshTabsData() {
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// Store a different copy of the tabs, so that we don't have to worry about
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// accidentally updating it on the wrong thread.
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mTabs = new ArrayList<Tab>();
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Iterable<Tab> tabs = Tabs.getInstance().getTabsInOrder();
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for (Tab tab : tabs) {
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mTabs.add(tab);
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}
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notifyDataSetChanged(); // Be sure to call this whenever mTabs changes.
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updateSelectedPosition();
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}
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// Updates the selected position in the list so that it will be scrolled to the right place.
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private void updateSelectedPosition() {
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int selected = getPositionForTab(Tabs.getInstance().getSelectedTab());
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if (selected == -1)
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return;
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mList.setSelection(selected);
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}
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public void clear() {
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mTabs = null;
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notifyDataSetChanged(); // Be sure to call this whenever mTabs changes.
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}
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public int getCount() {
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return (mTabs == null ? 0 : mTabs.size());
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}
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public Tab getItem(int position) {
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return mTabs.get(position);
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}
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public long getItemId(int position) {
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return position;
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}
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private int getPositionForTab(Tab tab) {
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if (mTabs == null || tab == null)
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return -1;
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return mTabs.indexOf(tab);
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}
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private void removeTab(Tab tab) {
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mTabs.remove(tab);
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notifyDataSetChanged(); // Be sure to call this whenever mTabs changes.
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}
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private void assignValues(TabRow row, Tab tab) {
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if (row == null || tab == null)
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return;
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row.id = tab.getId();
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Drawable thumbnailImage = tab.getThumbnail();
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if (thumbnailImage != null)
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row.thumbnail.setImageDrawable(thumbnailImage);
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else if (TextUtils.equals(tab.getURL(), ABOUT_HOME))
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row.thumbnail.setImageResource(R.drawable.abouthome_thumbnail);
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else
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row.thumbnail.setImageResource(R.drawable.tab_thumbnail_default);
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if (Tabs.getInstance().isSelectedTab(tab))
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row.info.setBackgroundResource(R.drawable.tabs_tray_active_selector);
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else
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row.info.setBackgroundResource(R.drawable.tabs_tray_default_selector);
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row.title.setText(tab.getDisplayTitle());
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row.close.setTag(row);
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}
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public View getView(int position, View convertView, ViewGroup parent) {
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TabRow row;
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if (convertView == null) {
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convertView = mInflater.inflate(R.layout.tabs_row, null);
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row = new TabRow(convertView);
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row.close.setOnClickListener(mOnCloseClickListener);
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convertView.setTag(row);
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} else {
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row = (TabRow) convertView.getTag();
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}
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Tab tab = mTabs.get(position);
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assignValues(row, tab);
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return convertView;
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}
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}
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private void animateClose(final View view, int x) {
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PropertyAnimator animator = new PropertyAnimator(ANIMATION_DURATION);
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animator.attach(view, Property.ALPHA, 0);
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animator.attach(view, Property.TRANSLATION_X, x);
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mCloseAnimationCount++;
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mPendingClosedTabs.add(view);
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animator.setPropertyAnimationListener(new PropertyAnimator.PropertyAnimationListener() {
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public void onPropertyAnimationStart() { }
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public void onPropertyAnimationEnd() {
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mCloseAnimationCount--;
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if (mCloseAnimationCount > 0)
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return;
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for (View pendingView : mPendingClosedTabs) {
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animateFinishClose(pendingView);
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}
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mPendingClosedTabs.clear();
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}
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});
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if (mTabsAdapter.getCount() == 1)
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autoHidePanel();
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animator.start();
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}
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private void animateFinishClose(final View view) {
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PropertyAnimator animator = new PropertyAnimator(ANIMATION_DURATION);
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animator.attach(view, Property.HEIGHT, 1);
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TabRow tab = (TabRow)view.getTag();
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final int tabId = tab.id;
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final int originalHeight = view.getHeight();
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animator.setPropertyAnimationListener(new PropertyAnimator.PropertyAnimationListener() {
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public void onPropertyAnimationStart() { }
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public void onPropertyAnimationEnd() {
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// Reset view presentation as it will be recycled in the
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// list view by the adapter.
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AnimatorProxy proxy = AnimatorProxy.create(view);
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proxy.setAlpha(1);
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proxy.setTranslationX(0);
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proxy.setHeight(originalHeight);
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Tabs tabs = Tabs.getInstance();
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Tab tab = tabs.getTab(tabId);
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tabs.closeTab(tab);
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}
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});
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animator.start();
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}
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private void animateCancel(final View view) {
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PropertyAnimator animator = new PropertyAnimator(ANIMATION_DURATION);
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animator.attach(view, Property.ALPHA, 1);
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animator.attach(view, Property.TRANSLATION_X, 0);
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animator.setPropertyAnimationListener(new PropertyAnimator.PropertyAnimationListener() {
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public void onPropertyAnimationStart() { }
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public void onPropertyAnimationEnd() {
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TabRow tab = (TabRow) view.getTag();
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tab.close.setVisibility(View.VISIBLE);
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}
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});
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animator.start();
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}
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private class TabSwipeGestureListener implements View.OnTouchListener {
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private int mSwipeThreshold;
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private int mMinFlingVelocity;
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private int mMaxFlingVelocity;
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private VelocityTracker mVelocityTracker;
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private ListView mListView;
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private int mListWidth = 1;
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private View mSwipeView;
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private AnimatorProxy mSwipeProxy;
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private int mSwipeViewPosition;
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private Runnable mPendingCheckForTap;
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private float mSwipeStart;
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private boolean mSwiping;
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private boolean mEnabled;
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public TabSwipeGestureListener(ListView listView) {
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mListView = listView;
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mSwipeView = null;
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mSwipeProxy = null;
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mSwipeViewPosition = ListView.INVALID_POSITION;
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mSwiping = false;
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mEnabled = true;
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ViewConfiguration vc = ViewConfiguration.get(listView.getContext());
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mSwipeThreshold = vc.getScaledTouchSlop();
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mMinFlingVelocity = vc.getScaledMinimumFlingVelocity();
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mMaxFlingVelocity = vc.getScaledMaximumFlingVelocity();
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}
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public void setEnabled(boolean enabled) {
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mEnabled = enabled;
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}
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public AbsListView.OnScrollListener makeScrollListener() {
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return new AbsListView.OnScrollListener() {
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@Override
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public void onScrollStateChanged(AbsListView absListView, int scrollState) {
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setEnabled(scrollState != AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL);
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}
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@Override
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public void onScroll(AbsListView absListView, int i, int i1, int i2) {
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}
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};
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}
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@Override
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public boolean onTouch(View view, MotionEvent e) {
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if (!mEnabled)
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return false;
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if (mListWidth < 2)
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mListWidth = mListView.getWidth();
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switch (e.getActionMasked()) {
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case MotionEvent.ACTION_DOWN: {
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// Check if we should set pressed state on the
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// touched view after a standard delay.
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triggerCheckForTap();
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// Find out which view is being touched
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mSwipeView = findViewAt(e.getRawX(), e.getRawY());
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if (mSwipeView != null) {
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mSwipeStart = e.getRawX();
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mSwipeViewPosition = mListView.getPositionForView(mSwipeView);
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mVelocityTracker = VelocityTracker.obtain();
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mVelocityTracker.addMovement(e);
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}
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view.onTouchEvent(e);
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return true;
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}
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case MotionEvent.ACTION_UP: {
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if (mSwipeView == null)
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break;
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cancelCheckForTap();
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mSwipeView.setPressed(false);
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if (!mSwiping) {
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TabRow tab = (TabRow) mSwipeView.getTag();
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Tabs.getInstance().selectTab(tab.id);
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autoHidePanel();
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break;
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}
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float deltaX = mSwipeProxy.getTranslationX();
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mVelocityTracker.addMovement(e);
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mVelocityTracker.computeCurrentVelocity(1000, mMaxFlingVelocity);
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float velocityX = Math.abs(mVelocityTracker.getXVelocity());
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float velocityY = Math.abs(mVelocityTracker.getYVelocity());
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boolean dismiss = false;
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boolean dismissRight = false;
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if (Math.abs(deltaX) > mListWidth / 2) {
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dismiss = true;
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dismissRight = (deltaX > 0);
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} else if (mMinFlingVelocity <= velocityX && velocityX <= mMaxFlingVelocity
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&& velocityY < velocityX) {
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dismiss = mSwiping && (deltaX * mVelocityTracker.getXVelocity() > 0);
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dismissRight = (mVelocityTracker.getXVelocity() > 0);
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}
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if (dismiss)
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animateClose(mSwipeView, (dismissRight ? mListWidth : -mListWidth));
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else
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animateCancel(mSwipeView);
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mVelocityTracker = null;
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mSwipeView = null;
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mSwipeViewPosition = ListView.INVALID_POSITION;
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mSwipeProxy = null;
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mSwipeStart = 0;
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mSwiping = false;
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break;
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}
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case MotionEvent.ACTION_MOVE: {
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if (mSwipeView == null)
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break;
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mVelocityTracker.addMovement(e);
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float deltaX = e.getRawX() - mSwipeStart;
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if (Math.abs(deltaX) > mSwipeThreshold) {
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// If we're actually swiping, make sure we don't
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// set pressed state on the swiped view.
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cancelCheckForTap();
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mSwiping = true;
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mListView.requestDisallowInterceptTouchEvent(true);
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TabRow tab = (TabRow) mSwipeView.getTag();
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tab.close.setVisibility(View.INVISIBLE);
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// Stops listview from highlighting the touched item
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// in the list when swiping.
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MotionEvent cancelEvent = MotionEvent.obtain(e);
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cancelEvent.setAction(MotionEvent.ACTION_CANCEL |
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(e.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
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mListView.onTouchEvent(cancelEvent);
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mSwipeProxy = AnimatorProxy.create(mSwipeView);
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}
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if (mSwiping) {
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mSwipeProxy.setTranslationX(deltaX);
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mSwipeProxy.setAlpha(Math.max(0.1f, Math.min(1f,
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1f - 2f * Math.abs(deltaX) / mListWidth)));
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return true;
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}
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break;
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}
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}
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return false;
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}
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private View findViewAt(float rawX, float rawY) {
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if (mList == null)
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return null;
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Rect rect = new Rect();
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int[] listViewCoords = new int[2];
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mListView.getLocationOnScreen(listViewCoords);
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int x = (int) rawX - listViewCoords[0];
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int y = (int) rawY - listViewCoords[1];
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for (int i = 0; i < mListView.getChildCount(); i++) {
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View child = mListView.getChildAt(i);
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child.getHitRect(rect);
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if (rect.contains(x, y))
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return child;
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}
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return null;
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}
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private void triggerCheckForTap() {
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if (mPendingCheckForTap == null)
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mPendingCheckForTap = new CheckForTap();
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mListView.postDelayed(mPendingCheckForTap, ViewConfiguration.getTapTimeout());
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}
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private void cancelCheckForTap() {
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if (mPendingCheckForTap == null)
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return;
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mListView.removeCallbacks(mPendingCheckForTap);
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}
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private class CheckForTap implements Runnable {
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@Override
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public void run() {
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if (!mSwiping && mSwipeView != null && mEnabled)
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mSwipeView.setPressed(true);
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}
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}
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}
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}
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