819dff1c18
Since external keyboards can be connected, we should always show the quick launch settings. Unfortunately they still need to be fragmentized. Change-Id: I1342ef3892a8b1b465ecc5c1346049f8b1ff73cd
371 lines
14 KiB
Java
371 lines
14 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.quicklaunch;
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import android.app.AlertDialog;
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import android.app.Dialog;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.database.ContentObserver;
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import android.database.Cursor;
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import android.os.Bundle;
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import android.os.Handler;
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import android.preference.Preference;
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import android.preference.PreferenceActivity;
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import android.preference.PreferenceGroup;
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import android.preference.PreferenceScreen;
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import android.provider.Settings.Bookmarks;
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import android.util.Log;
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import android.util.SparseArray;
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import android.util.SparseBooleanArray;
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import android.view.KeyCharacterMap;
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import android.view.KeyEvent;
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import android.view.View;
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import android.widget.AdapterView;
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import com.android.settings.R;
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import java.net.URISyntaxException;
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/**
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* Settings activity for quick launch.
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* <p>
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* Shows a list of possible shortcuts, the current application each is bound to,
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* and allows choosing a new bookmark for a shortcut.
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*/
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public class QuickLaunchSettings extends PreferenceActivity implements
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AdapterView.OnItemLongClickListener, DialogInterface.OnClickListener {
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private static final String TAG = "QuickLaunchSettings";
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private static final String KEY_SHORTCUT_CATEGORY = "shortcut_category";
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private static final int DIALOG_CLEAR_SHORTCUT = 0;
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private static final int REQUEST_PICK_BOOKMARK = 1;
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private static final int COLUMN_SHORTCUT = 0;
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private static final int COLUMN_TITLE = 1;
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private static final int COLUMN_INTENT = 2;
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private static final String[] sProjection = new String[] {
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Bookmarks.SHORTCUT, Bookmarks.TITLE, Bookmarks.INTENT
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};
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private static final String sShortcutSelection = Bookmarks.SHORTCUT + "=?";
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private Handler mUiHandler = new Handler();
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private static final String DEFAULT_BOOKMARK_FOLDER = "@quicklaunch";
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/** Cursor for Bookmarks provider. */
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private Cursor mBookmarksCursor;
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/** Listens for changes to Bookmarks provider. */
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private BookmarksObserver mBookmarksObserver;
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/** Used to keep track of which shortcuts have bookmarks. */
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private SparseBooleanArray mBookmarkedShortcuts;
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/** Preference category to hold the shortcut preferences. */
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private PreferenceGroup mShortcutGroup;
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/** Mapping of a shortcut to its preference. */
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private SparseArray<ShortcutPreference> mShortcutToPreference;
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/** The bookmark title of the shortcut that is being cleared. */
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private CharSequence mClearDialogBookmarkTitle;
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private static final String CLEAR_DIALOG_BOOKMARK_TITLE = "CLEAR_DIALOG_BOOKMARK_TITLE";
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/** The shortcut that is being cleared. */
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private char mClearDialogShortcut;
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private static final String CLEAR_DIALOG_SHORTCUT = "CLEAR_DIALOG_SHORTCUT";
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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addPreferencesFromResource(R.xml.quick_launch_settings);
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mShortcutGroup = (PreferenceGroup) findPreference(KEY_SHORTCUT_CATEGORY);
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mShortcutToPreference = new SparseArray<ShortcutPreference>();
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mBookmarksObserver = new BookmarksObserver(mUiHandler);
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initShortcutPreferences();
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mBookmarksCursor = managedQuery(Bookmarks.CONTENT_URI, sProjection, null, null);
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getListView().setOnItemLongClickListener(this);
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}
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@Override
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protected void onResume() {
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super.onResume();
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getContentResolver().registerContentObserver(Bookmarks.CONTENT_URI, true,
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mBookmarksObserver);
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refreshShortcuts();
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}
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@Override
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protected void onPause() {
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super.onPause();
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getContentResolver().unregisterContentObserver(mBookmarksObserver);
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}
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@Override
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protected void onRestoreInstanceState(Bundle state) {
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super.onRestoreInstanceState(state);
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// Restore the clear dialog's info
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mClearDialogBookmarkTitle = state.getString(CLEAR_DIALOG_BOOKMARK_TITLE);
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mClearDialogShortcut = (char) state.getInt(CLEAR_DIALOG_SHORTCUT, 0);
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}
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@Override
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protected void onSaveInstanceState(Bundle outState) {
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super.onSaveInstanceState(outState);
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// Save the clear dialog's info
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outState.putCharSequence(CLEAR_DIALOG_BOOKMARK_TITLE, mClearDialogBookmarkTitle);
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outState.putInt(CLEAR_DIALOG_SHORTCUT, mClearDialogShortcut);
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}
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@Override
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protected Dialog onCreateDialog(int id) {
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switch (id) {
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case DIALOG_CLEAR_SHORTCUT: {
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// Create the dialog for clearing a shortcut
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return new AlertDialog.Builder(this)
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.setTitle(getString(R.string.quick_launch_clear_dialog_title))
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.setIcon(android.R.drawable.ic_dialog_alert)
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.setMessage(getString(R.string.quick_launch_clear_dialog_message,
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mClearDialogShortcut, mClearDialogBookmarkTitle))
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.setPositiveButton(R.string.quick_launch_clear_ok_button, this)
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.setNegativeButton(R.string.quick_launch_clear_cancel_button, this)
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.create();
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}
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}
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return super.onCreateDialog(id);
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}
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@Override
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protected void onPrepareDialog(int id, Dialog dialog) {
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switch (id) {
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case DIALOG_CLEAR_SHORTCUT: {
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AlertDialog alertDialog = (AlertDialog) dialog;
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alertDialog.setMessage(getString(R.string.quick_launch_clear_dialog_message,
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mClearDialogShortcut, mClearDialogBookmarkTitle));
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}
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}
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}
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private void showClearDialog(ShortcutPreference pref) {
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if (!pref.hasBookmark()) return;
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mClearDialogBookmarkTitle = pref.getTitle();
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mClearDialogShortcut = pref.getShortcut();
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showDialog(DIALOG_CLEAR_SHORTCUT);
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}
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public void onClick(DialogInterface dialog, int which) {
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if (mClearDialogShortcut > 0 && which == AlertDialog.BUTTON_POSITIVE) {
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// Clear the shortcut
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clearShortcut(mClearDialogShortcut);
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}
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mClearDialogBookmarkTitle = null;
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mClearDialogShortcut = 0;
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}
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private void clearShortcut(char shortcut) {
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getContentResolver().delete(Bookmarks.CONTENT_URI, sShortcutSelection,
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new String[] { String.valueOf((int) shortcut) });
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}
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@Override
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public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
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if (!(preference instanceof ShortcutPreference)) return false;
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// Open the screen to pick a bookmark for this shortcut
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ShortcutPreference pref = (ShortcutPreference) preference;
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Intent intent = new Intent(this, BookmarkPicker.class);
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intent.putExtra(BookmarkPicker.EXTRA_SHORTCUT, pref.getShortcut());
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startActivityForResult(intent, REQUEST_PICK_BOOKMARK);
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return true;
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}
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public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
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// Open the clear shortcut dialog
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Preference pref = (Preference) getPreferenceScreen().getRootAdapter().getItem(position);
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if (!(pref instanceof ShortcutPreference)) return false;
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showClearDialog((ShortcutPreference) pref);
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return true;
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}
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@Override
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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if (resultCode != RESULT_OK) {
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return;
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}
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if (requestCode == REQUEST_PICK_BOOKMARK) {
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// Returned from the 'pick bookmark for this shortcut' screen
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if (data == null) {
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Log.w(TAG, "Result from bookmark picker does not have an intent.");
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return;
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}
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char shortcut = data.getCharExtra(BookmarkPicker.EXTRA_SHORTCUT, (char) 0);
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updateShortcut(shortcut, data);
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} else {
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super.onActivityResult(requestCode, resultCode, data);
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}
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}
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private void updateShortcut(char shortcut, Intent intent) {
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// Update the bookmark for a shortcut
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// Pass an empty title so it gets resolved each time this bookmark is
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// displayed (since the locale could change after we insert into the provider).
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Bookmarks.add(getContentResolver(), intent, "", DEFAULT_BOOKMARK_FOLDER, shortcut, 0);
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}
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private ShortcutPreference getOrCreatePreference(char shortcut) {
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ShortcutPreference pref = mShortcutToPreference.get(shortcut);
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if (pref != null) {
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return pref;
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} else {
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Log.w(TAG, "Unknown shortcut '" + shortcut + "', creating preference anyway");
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return createPreference(shortcut);
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}
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}
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private ShortcutPreference createPreference(char shortcut) {
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ShortcutPreference pref = new ShortcutPreference(QuickLaunchSettings.this, shortcut);
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mShortcutGroup.addPreference(pref);
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mShortcutToPreference.put(shortcut, pref);
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return pref;
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}
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private void initShortcutPreferences() {
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/** Whether the shortcut has been seen already. The array index is the shortcut. */
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SparseBooleanArray shortcutSeen = new SparseBooleanArray();
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KeyCharacterMap keyMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD);
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// Go through all the key codes and create a preference for the appropriate keys
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for (int keyCode = KeyEvent.getMaxKeyCode() - 1; keyCode >= 0; keyCode--) {
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// Get the label for the primary char on the key that produces this key code
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char shortcut = (char) Character.toLowerCase(keyMap.getDisplayLabel(keyCode));
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if (shortcut == 0 || shortcutSeen.get(shortcut, false)) continue;
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// TODO: need a to tell if the current keyboard can produce this key code, for now
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// only allow the letter or digits
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if (!Character.isLetterOrDigit(shortcut)) continue;
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shortcutSeen.put(shortcut, true);
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createPreference(shortcut);
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}
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}
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private synchronized void refreshShortcuts() {
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Cursor c = mBookmarksCursor;
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if (c == null) {
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// Haven't finished querying yet
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return;
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}
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if (!c.requery()) {
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Log.e(TAG, "Could not requery cursor when refreshing shortcuts.");
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return;
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}
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/**
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* We use the previous bookmarked shortcuts array to filter out those
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* shortcuts that had bookmarks before this method call, and don't after
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* (so we can set the preferences to be without bookmarks).
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*/
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SparseBooleanArray noLongerBookmarkedShortcuts = mBookmarkedShortcuts;
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SparseBooleanArray newBookmarkedShortcuts = new SparseBooleanArray();
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while (c.moveToNext()) {
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char shortcut = Character.toLowerCase((char) c.getInt(COLUMN_SHORTCUT));
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if (shortcut == 0) continue;
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ShortcutPreference pref = getOrCreatePreference(shortcut);
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CharSequence title = Bookmarks.getTitle(this, c);
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/*
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* The title retrieved from Bookmarks.getTitle() will be in
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* the original boot locale, not the current locale.
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* Try to look up a localized title from the PackageManager.
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*/
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int intentColumn = c.getColumnIndex(Bookmarks.INTENT);
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String intentUri = c.getString(intentColumn);
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PackageManager packageManager = getPackageManager();
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try {
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Intent intent = Intent.parseUri(intentUri, 0);
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ResolveInfo info = packageManager.resolveActivity(intent, 0);
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if (info != null) {
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title = info.loadLabel(packageManager);
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}
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} catch (URISyntaxException e) {
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// Just use the non-localized title, then.
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}
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pref.setTitle(title);
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pref.setSummary(getString(R.string.quick_launch_shortcut,
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String.valueOf(shortcut)));
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pref.setHasBookmark(true);
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newBookmarkedShortcuts.put(shortcut, true);
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if (noLongerBookmarkedShortcuts != null) {
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// After this loop, the shortcuts with value true in this array
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// will no longer have bookmarks
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noLongerBookmarkedShortcuts.put(shortcut, false);
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}
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}
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if (noLongerBookmarkedShortcuts != null) {
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for (int i = noLongerBookmarkedShortcuts.size() - 1; i >= 0; i--) {
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if (noLongerBookmarkedShortcuts.valueAt(i)) {
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// True, so there is no longer a bookmark for this shortcut
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char shortcut = (char) noLongerBookmarkedShortcuts.keyAt(i);
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ShortcutPreference pref = mShortcutToPreference.get(shortcut);
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if (pref != null) {
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pref.setHasBookmark(false);
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}
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}
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}
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}
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mBookmarkedShortcuts = newBookmarkedShortcuts;
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c.deactivate();
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}
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private class BookmarksObserver extends ContentObserver {
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public BookmarksObserver(Handler handler) {
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super(handler);
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}
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@Override
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public void onChange(boolean selfChange) {
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super.onChange(selfChange);
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refreshShortcuts();
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}
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}
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}
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