New dream settings - first cut

First draft implementation of mocks for dream settings.

Want to merge for the weekly build, so a few things remain, namely:
  - flat style for preview/settings buttons + dividers
  - animation between dream row expanded/collapsed state
  - wire up the help url
  - possibly ditch the non-standard style
  - add logging
  - refresh when packages are installed/uninstalled

Bug:7010260
Change-Id: I96e3ab944170925bd76edf7b8b1127adfffc6262

1 files changed, 250 insertions, 91 deletions

diff --git a/src/com/android/settings/DreamSettings.java b/src/com/android/settings/DreamSettings.java
index 071e369..d2d470f 100644
--- a/src/com/android/settings/DreamSettings.java
+++ b/src/com/android/settings/DreamSettings.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010 The Android Open Source Project
+ * Copyright (C) 2012 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,136 +16,295 @@
 
 package com.android.settings;
 
-import static android.provider.Settings.Secure.SCREENSAVER_ENABLED;
-import static android.provider.Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK;
-import static android.provider.Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP;
-
 import android.app.ActionBar;
 import android.app.Activity;
-import android.app.ActivityManagerNative;
-import android.app.admin.DevicePolicyManager;
-import android.content.ContentResolver;
+import android.app.AlertDialog;
+import android.app.Dialog;
 import android.content.Context;
-import android.content.res.Configuration;
-import android.database.ContentObserver;
+import android.content.DialogInterface;
+import android.graphics.Color;
 import android.os.Bundle;
-import android.os.Handler;
-import android.os.RemoteException;
-import android.os.ServiceManager;
-import android.preference.CheckBoxPreference;
-import android.preference.ListPreference;
-import android.preference.Preference;
 import android.preference.PreferenceActivity;
-import android.preference.PreferenceScreen;
-import android.provider.Settings;
-import android.util.Log;
 import android.view.Gravity;
-import android.view.IWindowManager;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.MenuItem.OnMenuItemClickListener;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.View.OnTouchListener;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
 import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
+import android.widget.ImageView;
+import android.widget.ListView;
+import android.widget.RadioButton;
 import android.widget.Switch;
+import android.widget.TextView;
+
+import com.android.settings.DreamBackend.DreamInfo;
 
-import java.util.ArrayList;
+import java.util.List;
 
 public class DreamSettings extends SettingsPreferenceFragment {
-    private static final String TAG = "DreamSettings";
+    private static final int DIALOG_WHEN_TO_DREAM = 1;
+    private static final int DIVIDER_HEIGHT = 15;
 
-    private static final String KEY_ACTIVATE_ON_SLEEP = "activate_on_sleep";
-    private static final String KEY_ACTIVATE_ON_DOCK = "activate_on_dock";
-    private static final String KEY_COMPONENT = "screensaver_component";
-    private static final String KEY_TEST = "test";
+    private Context mContext;
+    private DreamBackend mBackend;
+    private DreamInfoAdapter mAdapter;
+    private Switch mSwitch;
+    private MenuItem[] mDependentMenuItems;
+    private boolean mRefreshing;
 
-    private static final int DEFAULT_SLEEP = 1;
-    private static final int DEFAULT_DOCK = 1;
+    @Override
+    public void onAttach(Activity activity) {
+        super.onAttach(activity);
+        mContext = activity;
+    }
 
-    private ActivationSetting mActivateOnSleep;
-    private ActivationSetting mActivateOnDock;
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        Activity activity = getActivity();
 
-    private Preference mComponentPref;
-    private Preference mTestPref;
+        mBackend = new DreamBackend(activity);
+        mSwitch = new Switch(activity);
+        mSwitch.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                if (!mRefreshing) {
+                    mBackend.setEnabled(isChecked);
+                    refreshFromBackend();
+                }
+            }
+        });
+        if (activity instanceof PreferenceActivity) {
+            PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
+            if (preferenceActivity.onIsHidingHeaders() || !preferenceActivity.onIsMultiPane()) {
+                final int padding = activity.getResources().getDimensionPixelSize(
+                        R.dimen.action_bar_switch_padding);
+                mSwitch.setPadding(0, 0, padding, 0);
+                activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
+                        ActionBar.DISPLAY_SHOW_CUSTOM);
+                activity.getActionBar().setCustomView(mSwitch, new ActionBar.LayoutParams(
+                        ActionBar.LayoutParams.WRAP_CONTENT,
+                        ActionBar.LayoutParams.WRAP_CONTENT,
+                        Gravity.CENTER_VERTICAL | Gravity.END));
+            }
+        }
+        setHasOptionsMenu(true);
+    }
 
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
 
-        addPreferencesFromResource(R.xml.dream_settings);
+        ListView listView = getListView();
 
-        mComponentPref = findPreference(KEY_COMPONENT);
-        mTestPref = findPreference(KEY_TEST);
+        TextView emptyView = (TextView) getView().findViewById(android.R.id.empty);
+        emptyView.setText(R.string.screensaver_settings_disabled_prompt);
+        listView.setEmptyView(emptyView);
 
-        mActivateOnSleep = new ActivationSetting(getActivity(),
-                SCREENSAVER_ACTIVATE_ON_SLEEP, DEFAULT_SLEEP,
-                (CheckBoxPreference) findPreference(KEY_ACTIVATE_ON_SLEEP));
-        mActivateOnDock = new ActivationSetting(getActivity(),
-                SCREENSAVER_ACTIVATE_ON_DOCK, DEFAULT_DOCK,
-                (CheckBoxPreference) findPreference(KEY_ACTIVATE_ON_DOCK));
+        mAdapter = new DreamInfoAdapter(mContext);
+        listView.setAdapter(mAdapter);
+        listView.setDivider(null);
+        listView.setDividerHeight(DIVIDER_HEIGHT);
+        listView.setBackgroundColor(Color.BLACK);
+        listView.setPadding(0, DIVIDER_HEIGHT, 0, DIVIDER_HEIGHT);
+        listView.setHeaderDividersEnabled(true);
     }
 
-    public static boolean isScreenSaverActivatedOnSleep(Context context) {
-        return 0 != Settings.Secure.getInt(
-                    context.getContentResolver(), SCREENSAVER_ACTIVATE_ON_SLEEP, DEFAULT_SLEEP);
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        boolean isEnabled = mBackend.isEnabled();
+
+        MenuItem whenToDream = createMenuItem(menu,
+                R.string.screensaver_settings_when_to_dream,
+                MenuItem.SHOW_AS_ACTION_NEVER,
+                isEnabled,
+                new Runnable() {
+                    @Override
+                    public void run() {
+                        showDialog(DIALOG_WHEN_TO_DREAM);
+                    }});
+
+        createMenuItem(menu,
+                R.string.help_label,
+                MenuItem.SHOW_AS_ACTION_NEVER,
+                true,
+                new Runnable() {
+                    @Override
+                    public void run() {
+                       // TODO show help url
+                    }});
+
+        MenuItem startDreaming = createMenuItem(menu,
+                R.string.screensaver_settings_start_dreaming,
+                MenuItem.SHOW_AS_ACTION_ALWAYS,
+                isEnabled,
+                new Runnable(){
+                    @Override
+                    public void run() {
+                        mBackend.startDreamingNow();
+                    }});
+
+        mDependentMenuItems = new MenuItem[] { whenToDream, startDreaming };
     }
 
-    public static boolean isScreenSaverActivatedOnDock(Context context) {
-        return 0 != Settings.Secure.getInt(
-                    context.getContentResolver(), SCREENSAVER_ACTIVATE_ON_DOCK, DEFAULT_DOCK);
+    private MenuItem createMenuItem(Menu menu,
+            int titleRes, int actionEnum, boolean isEnabled, final Runnable onClick) {
+        MenuItem item = menu.add(titleRes);
+        item.setShowAsAction(actionEnum);
+        item.setEnabled(isEnabled);
+        item.setOnMenuItemClickListener(new OnMenuItemClickListener() {
+            @Override
+            public boolean onMenuItemClick(MenuItem item) {
+                onClick.run();
+                return true;
+            }
+        });
+        return item;
+    }
+
+    @Override
+    public Dialog onCreateDialog(int dialogId) {
+        if (dialogId == DIALOG_WHEN_TO_DREAM)
+            return createWhenToDreamDialog();
+        return super.onCreateDialog(dialogId);
+    }
+
+    private Dialog createWhenToDreamDialog() {
+        final CharSequence[] items = {
+                mContext.getString(R.string.screensaver_settings_summary_dock),
+                mContext.getString(R.string.screensaver_settings_summary_sleep),
+                mContext.getString(R.string.screensaver_settings_summary_either_short)
+        };
+
+        int initialSelection = mBackend.isActivatedOnDock() && mBackend.isActivatedOnSleep() ? 2
+                : mBackend.isActivatedOnDock() ? 0
+                : mBackend.isActivatedOnSleep() ? 1
+                : -1;
+
+        return new AlertDialog.Builder(mContext)
+                .setTitle(R.string.screensaver_settings_when_to_dream)
+                .setSingleChoiceItems(items, initialSelection, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int item) {
+                        mBackend.setActivatedOnDock(item == 0 || item == 2);
+                        mBackend.setActivatedOnSleep(item == 1 || item == 2);
+                    }
+                })
+                .create();
     }
 
     @Override
     public void onResume() {
-        mActivateOnSleep.onResume();
-        mActivateOnDock.onResume();
-        refreshDependents();
         super.onResume();
+        refreshFromBackend();
     }
 
-    @Override
-    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
-        mActivateOnSleep.onClick(preference);
-        mActivateOnDock.onClick(preference);
-
-        // FIXME: infer enabled (until the next rev of the dream settings ui)
-        boolean enabled = mActivateOnSleep.isSelected() || mActivateOnDock.isSelected();
-        Settings.Secure.putInt(getActivity().getContentResolver(),
-                SCREENSAVER_ENABLED,
-                enabled ? 1 : 0);
-
-        refreshDependents();
-        return super.onPreferenceTreeClick(preferenceScreen, preference);
+    public static int getSummaryResource(Context context) {
+        DreamBackend backend = new DreamBackend(context);
+        boolean isEnabled = backend.isEnabled();
+        boolean activatedOnSleep = backend.isActivatedOnSleep();
+        boolean activatedOnDock = backend.isActivatedOnDock();
+        boolean activatedOnEither = activatedOnSleep && activatedOnDock;
+        return !isEnabled ? R.string.screensaver_settings_summary_off
+                : activatedOnEither ? R.string.screensaver_settings_summary_either_long
+                : activatedOnSleep ? R.string.screensaver_settings_summary_sleep
+                : activatedOnDock ? R.string.screensaver_settings_summary_dock
+                : 0;
     }
 
-    private void refreshDependents() {
-        boolean enabled = mActivateOnSleep.isSelected() || mActivateOnDock.isSelected();
-        mComponentPref.setEnabled(enabled);
-        mTestPref.setEnabled(enabled);
+    private void refreshFromBackend() {
+        mRefreshing = true;
+        boolean dreamsEnabled = mBackend.isEnabled();
+        if (mSwitch.isChecked() != dreamsEnabled)
+            mSwitch.setChecked(dreamsEnabled);
+
+        mAdapter.clear();
+        if (dreamsEnabled) {
+            List<DreamInfo> dreamInfos = mBackend.getDreamInfos();
+            mAdapter.addAll(dreamInfos);
+        }
+        if (mDependentMenuItems != null)
+            for (MenuItem item : mDependentMenuItems)
+                item.setEnabled(dreamsEnabled);
+        mRefreshing = false;
     }
 
-    private static class ActivationSetting {
-        private final Context mContext;
-        private final String mName;
-        private final int mDefaultValue;
-        private final CheckBoxPreference mPref;
-
-        ActivationSetting(Context context, String name, int defaultValue, CheckBoxPreference pref) {
-            mContext = context;
-            mName = name;
-            mDefaultValue = defaultValue;
-            mPref = pref;
+    private class DreamInfoAdapter extends ArrayAdapter<DreamInfo> {
+        private final LayoutInflater mInflater;
+
+        public DreamInfoAdapter(Context context) {
+            super(context, 0);
+            mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         }
-        public boolean isSelected() {
-            return mPref.isChecked();
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            DreamInfo dreamInfo = getItem(position);
+            final View row = convertView != null ? convertView : createDreamInfoRow(parent);
+            row.setTag(dreamInfo);
+
+            // bind icon
+            ((ImageView) row.findViewById(android.R.id.icon)).setImageDrawable(dreamInfo.icon);
+
+            // bind caption
+            ((TextView) row.findViewById(android.R.id.text1)).setText(dreamInfo.caption);
+
+            // bind radio button
+            ((RadioButton) row.findViewById(android.R.id.button1)).setChecked(dreamInfo.isActive);
+            ((RadioButton) row.findViewById(android.R.id.button1)).setOnTouchListener(new OnTouchListener() {
+                @Override
+                public boolean onTouch(View v, MotionEvent event) {
+                    row.onTouchEvent(event);
+                    return false;
+                }});
+
+            // bind button container
+            row.findViewById(android.R.id.widget_frame).setVisibility(dreamInfo.isActive ? View.VISIBLE : View.GONE);
+
+            // bind settings button
+            ((Button) row.findViewById(android.R.id.button2)).setEnabled(dreamInfo.settingsComponentName != null);
+            ((Button) row.findViewById(android.R.id.button2)).setOnClickListener(new OnClickListener(){
+                @Override
+                public void onClick(View v) {
+                    mBackend.launchSettings((DreamInfo)row.getTag());
+                }});
+
+            // bind preview button
+            ((Button) row.findViewById(android.R.id.button3)).setOnClickListener(new OnClickListener(){
+                @Override
+                public void onClick(View v) {
+                    mBackend.preview((DreamInfo)row.getTag());
+                }});
+
+            return row;
         }
-        void onClick(Preference preference) {
-            if (preference == mPref) {
-                Settings.Secure.putInt(mContext.getContentResolver(),
-                        mName,
-                        mPref.isChecked() ? 1 : 0);
-            }
+
+        private View createDreamInfoRow(ViewGroup parent) {
+            final View row =  mInflater.inflate(R.layout.dream_info_row, parent, false);
+            row.setOnClickListener(new OnClickListener(){
+                @Override
+                public void onClick(View v) {
+                    v.setPressed(true);
+                    activate((DreamInfo) row.getTag());
+                }});
+            return row;
         }
-        void onResume() {
-            boolean currentActivated = 0 != Settings.Secure.getInt(mContext.getContentResolver(),
-                    mName, mDefaultValue);
-            mPref.setChecked(currentActivated);
+
+        private void activate(DreamInfo dreamInfo) {
+            for (int i = 0; i < getCount(); i++) {
+                getItem(i).isActive = false;
+            }
+            dreamInfo.isActive = true;
+            mBackend.setActiveDream(dreamInfo.componentName);
+            notifyDataSetChanged();
         }
     }
-
 }