src/com/android/settings/inputmethod/KeyboardLayoutDialogFragment.java - platform/packages/apps/Settings - Git at Google

 /*
  * 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.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.settings.inputmethod;

 import com.android.settings.R;
 import com.android.settings.Settings.KeyboardLayoutPickerActivity;

 import android.app.AlertDialog;
 import android.app.Activity;
 import android.app.Dialog;
 import android.app.DialogFragment;
 import android.app.LoaderManager.LoaderCallbacks;
 import android.content.AsyncTaskLoader;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.Loader;
 import android.content.res.Resources;
 import android.hardware.input.InputManager;
 import android.hardware.input.KeyboardLayout;
 import android.hardware.input.InputManager.InputDeviceListener;
 import android.os.Bundle;
 import android.view.InputDevice;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
 import android.widget.CheckedTextView;
 import android.widget.RadioButton;
 import android.widget.TextView;

 import java.util.ArrayList;
 import java.util.Collections;

 public class KeyboardLayoutDialogFragment extends DialogFragment
         implements InputDeviceListener, LoaderCallbacks<KeyboardLayoutDialogFragment.Keyboards> {
     private static final String KEY_INPUT_DEVICE_DESCRIPTOR = "inputDeviceDescriptor";

     private String mInputDeviceDescriptor;
     private int mInputDeviceId = -1;
     private InputManager mIm;
     private KeyboardLayoutAdapter mAdapter;

     public KeyboardLayoutDialogFragment() {
     }

     public KeyboardLayoutDialogFragment(String inputDeviceDescriptor) {
         mInputDeviceDescriptor = inputDeviceDescriptor;
     }

     @Override
     public void onAttach(Activity activity) {
         super.onAttach(activity);

         Context context = activity.getBaseContext();
         mIm = (InputManager)context.getSystemService(Context.INPUT_SERVICE);
         mAdapter = new KeyboardLayoutAdapter(context);
     }

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);

         if (savedInstanceState != null) {
             mInputDeviceDescriptor = savedInstanceState.getString(KEY_INPUT_DEVICE_DESCRIPTOR);
         }

         getLoaderManager().initLoader(0, null, this);
     }

     @Override
     public void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putString(KEY_INPUT_DEVICE_DESCRIPTOR, mInputDeviceDescriptor);
     }

     @Override
     public Dialog onCreateDialog(Bundle savedInstanceState) {
         Context context = getActivity();
         LayoutInflater inflater = LayoutInflater.from(context);
         AlertDialog.Builder builder = new AlertDialog.Builder(context)
             .setTitle(R.string.keyboard_layout_dialog_title)
             .setPositiveButton(R.string.keyboard_layout_dialog_setup_button,
                     new DialogInterface.OnClickListener() {
                         @Override
                         public void onClick(DialogInterface dialog, int which) {
                             onSetupLayoutsButtonClicked();
                         }
                     })
             .setSingleChoiceItems(mAdapter, -1,
                     new DialogInterface.OnClickListener() {
                         @Override
                         public void onClick(DialogInterface dialog, int which) {
                             onKeyboardLayoutClicked(which);
                         }
                     })
             .setView(inflater.inflate(R.layout.keyboard_layout_dialog_switch_hint, null));
         updateSwitchHintVisibility();
         return builder.create();
     }

     @Override
     public void onResume() {
         super.onResume();

         mIm.registerInputDeviceListener(this, null);

         InputDevice inputDevice = mIm.getInputDeviceByDescriptor(mInputDeviceDescriptor);
         if (inputDevice == null) {
             dismiss();
             return;
         }
         mInputDeviceId = inputDevice.getId();
     }

     @Override
     public void onPause() {
         mIm.unregisterInputDeviceListener(this);
         mInputDeviceId = -1;

         super.onPause();
     }

     @Override
     public void onCancel(DialogInterface dialog) {
         super.onCancel(dialog);
         dismiss();
     }

     private void onSetupLayoutsButtonClicked() {
         ((OnSetupKeyboardLayoutsListener)getTargetFragment()).onSetupKeyboardLayouts(
                 mInputDeviceDescriptor);
     }

     @Override
     public void onActivityResult(int requestCode, int resultCode, Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
         show(getActivity().getFragmentManager(), "layout");
     }

     private void onKeyboardLayoutClicked(int which) {
         if (which >= 0 && which < mAdapter.getCount()) {
             KeyboardLayout keyboardLayout = mAdapter.getItem(which);
             if (keyboardLayout != null) {
                 mIm.setCurrentKeyboardLayoutForInputDevice(mInputDeviceDescriptor,
                         keyboardLayout.getDescriptor());
             }
             dismiss();
         }
     }

     @Override
     public Loader<Keyboards> onCreateLoader(int id, Bundle args) {
         return new KeyboardLayoutLoader(getActivity().getBaseContext(), mInputDeviceDescriptor);
     }

     @Override
     public void onLoadFinished(Loader<Keyboards> loader, Keyboards data) {
         mAdapter.clear();
         mAdapter.addAll(data.keyboardLayouts);
         mAdapter.setCheckedItem(data.current);
         AlertDialog dialog = (AlertDialog)getDialog();
         if (dialog != null) {
             dialog.getListView().setItemChecked(data.current, true);
         }
         updateSwitchHintVisibility();
     }

     @Override
     public void onLoaderReset(Loader<Keyboards> loader) {
         mAdapter.clear();
         updateSwitchHintVisibility();
     }

     @Override
     public void onInputDeviceAdded(int deviceId) {
     }

     @Override
     public void onInputDeviceChanged(int deviceId) {
         if (mInputDeviceId >= 0 && deviceId == mInputDeviceId) {
             getLoaderManager().restartLoader(0, null, this);
         }
     }

     @Override
     public void onInputDeviceRemoved(int deviceId) {
         if (mInputDeviceId >= 0 && deviceId == mInputDeviceId) {
             dismiss();
         }
     }

     private void updateSwitchHintVisibility() {
         AlertDialog dialog = (AlertDialog)getDialog();
         if (dialog != null) {
             View customPanel = dialog.findViewById(com.android.internal.R.id.customPanel);
             customPanel.setVisibility(mAdapter.getCount() > 1 ? View.VISIBLE : View.GONE);
         }
     }

     private static final class KeyboardLayoutAdapter extends ArrayAdapter<KeyboardLayout> {
         private final LayoutInflater mInflater;
         private int mCheckedItem = -1;

         public KeyboardLayoutAdapter(Context context) {
             super(context, com.android.internal.R.layout.simple_list_item_2_single_choice);
             mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         }

         public void setCheckedItem(int position) {
             mCheckedItem = position;
         }

         @Override
         public View getView(int position, View convertView, ViewGroup parent) {
             KeyboardLayout item = getItem(position);
             String label, collection;
             if (item != null) {
                 label = item.getLabel();
                 collection = item.getCollection();
             } else {
                 label = getContext().getString(R.string.keyboard_layout_default_label);
                 collection = "";
             }

             boolean checked = (position == mCheckedItem);
             if (collection.isEmpty()) {
                 return inflateOneLine(convertView, parent, label, checked);
             } else {
                 return inflateTwoLine(convertView, parent, label, collection, checked);
             }
         }

         private View inflateOneLine(View convertView, ViewGroup parent,
                 String label, boolean checked) {
             View view = convertView;
             if (view == null || isTwoLine(view)) {
                 view = mInflater.inflate(
                         com.android.internal.R.layout.simple_list_item_single_choice,
                         parent, false);
                 setTwoLine(view, false);
             }
             CheckedTextView headline = (CheckedTextView) view.findViewById(android.R.id.text1);
             headline.setText(label);
             headline.setChecked(checked);
             return view;
         }

         private View inflateTwoLine(View convertView, ViewGroup parent,
                 String label, String collection, boolean checked) {
             View view = convertView;
             if (view == null || !isTwoLine(view)) {
                 view = mInflater.inflate(
                         com.android.internal.R.layout.simple_list_item_2_single_choice,
                         parent, false);
                 setTwoLine(view, true);
             }
             TextView headline = (TextView) view.findViewById(android.R.id.text1);
             TextView subText = (TextView) view.findViewById(android.R.id.text2);
             RadioButton radioButton =
                     (RadioButton)view.findViewById(com.android.internal.R.id.radio);
             headline.setText(label);
             subText.setText(collection);
             radioButton.setChecked(checked);
             return view;
         }

         private static boolean isTwoLine(View view) {
             return view.getTag() == Boolean.TRUE;
         }

         private static void setTwoLine(View view, boolean twoLine) {
             view.setTag(Boolean.valueOf(twoLine));
         }
     }

     private static final class KeyboardLayoutLoader extends AsyncTaskLoader<Keyboards> {
         private final String mInputDeviceDescriptor;

         public KeyboardLayoutLoader(Context context, String inputDeviceDescriptor) {
             super(context);
             mInputDeviceDescriptor = inputDeviceDescriptor;
         }

         @Override
         public Keyboards loadInBackground() {
             Keyboards keyboards = new Keyboards();
             InputManager im = (InputManager)getContext().getSystemService(Context.INPUT_SERVICE);
             String[] keyboardLayoutDescriptors = im.getKeyboardLayoutsForInputDevice(
                     mInputDeviceDescriptor);
             for (String keyboardLayoutDescriptor : keyboardLayoutDescriptors) {
                 KeyboardLayout keyboardLayout = im.getKeyboardLayout(keyboardLayoutDescriptor);
                 if (keyboardLayout != null) {
                     keyboards.keyboardLayouts.add(keyboardLayout);
                 }
             }
             Collections.sort(keyboards.keyboardLayouts);

             String currentKeyboardLayoutDescriptor =
                     im.getCurrentKeyboardLayoutForInputDevice(mInputDeviceDescriptor);
             if (currentKeyboardLayoutDescriptor != null) {
                 final int numKeyboardLayouts = keyboards.keyboardLayouts.size();
                 for (int i = 0; i < numKeyboardLayouts; i++) {
                     if (keyboards.keyboardLayouts.get(i).getDescriptor().equals(
                             currentKeyboardLayoutDescriptor)) {
                         keyboards.current = i;
                         break;
                     }
                 }
             }

             if (keyboards.keyboardLayouts.isEmpty()) {
                 keyboards.keyboardLayouts.add(null); // default layout
                 keyboards.current = 0;
             }
             return keyboards;
         }

         @Override
         protected void onStartLoading() {
             super.onStartLoading();
             forceLoad();
         }

         @Override
         protected void onStopLoading() {
             super.onStopLoading();
             cancelLoad();
         }
     }

     public static final class Keyboards {
         public final ArrayList<KeyboardLayout> keyboardLayouts = new ArrayList<KeyboardLayout>();
         public int current = -1;
     }

     public interface OnSetupKeyboardLayoutsListener {
         public void onSetupKeyboardLayouts(String inputDeviceDescriptor);
     }
 }
	/*
	* 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.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.settings.inputmethod;

	import com.android.settings.R;
	import com.android.settings.Settings.KeyboardLayoutPickerActivity;

	import android.app.AlertDialog;
	import android.app.Activity;
	import android.app.Dialog;
	import android.app.DialogFragment;
	import android.app.LoaderManager.LoaderCallbacks;
	import android.content.AsyncTaskLoader;
	import android.content.Context;
	import android.content.DialogInterface;
	import android.content.Intent;
	import android.content.Loader;
	import android.content.res.Resources;
	import android.hardware.input.InputManager;
	import android.hardware.input.KeyboardLayout;
	import android.hardware.input.InputManager.InputDeviceListener;
	import android.os.Bundle;
	import android.view.InputDevice;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.ArrayAdapter;
	import android.widget.CheckedTextView;
	import android.widget.RadioButton;
	import android.widget.TextView;

	import java.util.ArrayList;
	import java.util.Collections;

	public class KeyboardLayoutDialogFragment extends DialogFragment
	implements InputDeviceListener, LoaderCallbacks<KeyboardLayoutDialogFragment.Keyboards> {
	private static final String KEY_INPUT_DEVICE_DESCRIPTOR = "inputDeviceDescriptor";

	private String mInputDeviceDescriptor;
	private int mInputDeviceId = -1;
	private InputManager mIm;
	private KeyboardLayoutAdapter mAdapter;

	public KeyboardLayoutDialogFragment() {
	}

	public KeyboardLayoutDialogFragment(String inputDeviceDescriptor) {
	mInputDeviceDescriptor = inputDeviceDescriptor;
	}

	@Override
	public void onAttach(Activity activity) {
	super.onAttach(activity);

	Context context = activity.getBaseContext();
	mIm = (InputManager)context.getSystemService(Context.INPUT_SERVICE);
	mAdapter = new KeyboardLayoutAdapter(context);
	}

	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);

	if (savedInstanceState != null) {
	mInputDeviceDescriptor = savedInstanceState.getString(KEY_INPUT_DEVICE_DESCRIPTOR);
	}

	getLoaderManager().initLoader(0, null, this);
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
	super.onSaveInstanceState(outState);
	outState.putString(KEY_INPUT_DEVICE_DESCRIPTOR, mInputDeviceDescriptor);
	}

	@Override
	public Dialog onCreateDialog(Bundle savedInstanceState) {
	Context context = getActivity();
	LayoutInflater inflater = LayoutInflater.from(context);
	AlertDialog.Builder builder = new AlertDialog.Builder(context)
	.setTitle(R.string.keyboard_layout_dialog_title)
	.setPositiveButton(R.string.keyboard_layout_dialog_setup_button,
	new DialogInterface.OnClickListener() {
	@Override
	public void onClick(DialogInterface dialog, int which) {
	onSetupLayoutsButtonClicked();
	}
	})
	.setSingleChoiceItems(mAdapter, -1,
	new DialogInterface.OnClickListener() {
	@Override
	public void onClick(DialogInterface dialog, int which) {
	onKeyboardLayoutClicked(which);
	}
	})
	.setView(inflater.inflate(R.layout.keyboard_layout_dialog_switch_hint, null));
	updateSwitchHintVisibility();
	return builder.create();
	}

	@Override
	public void onResume() {
	super.onResume();

	mIm.registerInputDeviceListener(this, null);

	InputDevice inputDevice = mIm.getInputDeviceByDescriptor(mInputDeviceDescriptor);
	if (inputDevice == null) {
	dismiss();
	return;
	}
	mInputDeviceId = inputDevice.getId();
	}

	@Override
	public void onPause() {
	mIm.unregisterInputDeviceListener(this);
	mInputDeviceId = -1;

	super.onPause();
	}

	@Override
	public void onCancel(DialogInterface dialog) {
	super.onCancel(dialog);
	dismiss();
	}

	private void onSetupLayoutsButtonClicked() {
	((OnSetupKeyboardLayoutsListener)getTargetFragment()).onSetupKeyboardLayouts(
	mInputDeviceDescriptor);
	}

	@Override
	public void onActivityResult(int requestCode, int resultCode, Intent data) {
	super.onActivityResult(requestCode, resultCode, data);
	show(getActivity().getFragmentManager(), "layout");
	}

	private void onKeyboardLayoutClicked(int which) {
	if (which >= 0 && which < mAdapter.getCount()) {
	KeyboardLayout keyboardLayout = mAdapter.getItem(which);
	if (keyboardLayout != null) {
	mIm.setCurrentKeyboardLayoutForInputDevice(mInputDeviceDescriptor,
	keyboardLayout.getDescriptor());
	}
	dismiss();
	}
	}

	@Override
	public Loader<Keyboards> onCreateLoader(int id, Bundle args) {
	return new KeyboardLayoutLoader(getActivity().getBaseContext(), mInputDeviceDescriptor);
	}

	@Override
	public void onLoadFinished(Loader<Keyboards> loader, Keyboards data) {
	mAdapter.clear();
	mAdapter.addAll(data.keyboardLayouts);
	mAdapter.setCheckedItem(data.current);
	AlertDialog dialog = (AlertDialog)getDialog();
	if (dialog != null) {
	dialog.getListView().setItemChecked(data.current, true);
	}
	updateSwitchHintVisibility();
	}

	@Override
	public void onLoaderReset(Loader<Keyboards> loader) {
	mAdapter.clear();
	updateSwitchHintVisibility();
	}

	@Override
	public void onInputDeviceAdded(int deviceId) {
	}

	@Override
	public void onInputDeviceChanged(int deviceId) {
	if (mInputDeviceId >= 0 && deviceId == mInputDeviceId) {
	getLoaderManager().restartLoader(0, null, this);
	}
	}

	@Override
	public void onInputDeviceRemoved(int deviceId) {
	if (mInputDeviceId >= 0 && deviceId == mInputDeviceId) {
	dismiss();
	}
	}

	private void updateSwitchHintVisibility() {
	AlertDialog dialog = (AlertDialog)getDialog();
	if (dialog != null) {
	View customPanel = dialog.findViewById(com.android.internal.R.id.customPanel);
	customPanel.setVisibility(mAdapter.getCount() > 1 ? View.VISIBLE : View.GONE);
	}
	}

	private static final class KeyboardLayoutAdapter extends ArrayAdapter<KeyboardLayout> {
	private final LayoutInflater mInflater;
	private int mCheckedItem = -1;

	public KeyboardLayoutAdapter(Context context) {
	super(context, com.android.internal.R.layout.simple_list_item_2_single_choice);
	mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	}

	public void setCheckedItem(int position) {
	mCheckedItem = position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
	KeyboardLayout item = getItem(position);
	String label, collection;
	if (item != null) {
	label = item.getLabel();
	collection = item.getCollection();
	} else {
	label = getContext().getString(R.string.keyboard_layout_default_label);
	collection = "";
	}

	boolean checked = (position == mCheckedItem);
	if (collection.isEmpty()) {
	return inflateOneLine(convertView, parent, label, checked);
	} else {
	return inflateTwoLine(convertView, parent, label, collection, checked);
	}
	}

	private View inflateOneLine(View convertView, ViewGroup parent,
	String label, boolean checked) {
	View view = convertView;
	if (view == null \|\| isTwoLine(view)) {
	view = mInflater.inflate(
	com.android.internal.R.layout.simple_list_item_single_choice,
	parent, false);
	setTwoLine(view, false);
	}
	CheckedTextView headline = (CheckedTextView) view.findViewById(android.R.id.text1);
	headline.setText(label);
	headline.setChecked(checked);
	return view;
	}

	private View inflateTwoLine(View convertView, ViewGroup parent,
	String label, String collection, boolean checked) {
	View view = convertView;
	if (view == null \|\| !isTwoLine(view)) {
	view = mInflater.inflate(
	com.android.internal.R.layout.simple_list_item_2_single_choice,
	parent, false);
	setTwoLine(view, true);
	}
	TextView headline = (TextView) view.findViewById(android.R.id.text1);
	TextView subText = (TextView) view.findViewById(android.R.id.text2);
	RadioButton radioButton =
	(RadioButton)view.findViewById(com.android.internal.R.id.radio);
	headline.setText(label);
	subText.setText(collection);
	radioButton.setChecked(checked);
	return view;
	}

	private static boolean isTwoLine(View view) {
	return view.getTag() == Boolean.TRUE;
	}

	private static void setTwoLine(View view, boolean twoLine) {
	view.setTag(Boolean.valueOf(twoLine));
	}
	}

	private static final class KeyboardLayoutLoader extends AsyncTaskLoader<Keyboards> {
	private final String mInputDeviceDescriptor;

	public KeyboardLayoutLoader(Context context, String inputDeviceDescriptor) {
	super(context);
	mInputDeviceDescriptor = inputDeviceDescriptor;
	}

	@Override
	public Keyboards loadInBackground() {
	Keyboards keyboards = new Keyboards();
	InputManager im = (InputManager)getContext().getSystemService(Context.INPUT_SERVICE);
	String[] keyboardLayoutDescriptors = im.getKeyboardLayoutsForInputDevice(
	mInputDeviceDescriptor);
	for (String keyboardLayoutDescriptor : keyboardLayoutDescriptors) {
	KeyboardLayout keyboardLayout = im.getKeyboardLayout(keyboardLayoutDescriptor);
	if (keyboardLayout != null) {
	keyboards.keyboardLayouts.add(keyboardLayout);
	}
	}
	Collections.sort(keyboards.keyboardLayouts);

	String currentKeyboardLayoutDescriptor =
	im.getCurrentKeyboardLayoutForInputDevice(mInputDeviceDescriptor);
	if (currentKeyboardLayoutDescriptor != null) {
	final int numKeyboardLayouts = keyboards.keyboardLayouts.size();
	for (int i = 0; i < numKeyboardLayouts; i++) {
	if (keyboards.keyboardLayouts.get(i).getDescriptor().equals(
	currentKeyboardLayoutDescriptor)) {
	keyboards.current = i;
	break;
	}
	}
	}

	if (keyboards.keyboardLayouts.isEmpty()) {
	keyboards.keyboardLayouts.add(null); // default layout
	keyboards.current = 0;
	}
	return keyboards;
	}

	@Override
	protected void onStartLoading() {
	super.onStartLoading();
	forceLoad();
	}

	@Override
	protected void onStopLoading() {
	super.onStopLoading();
	cancelLoad();
	}
	}

	public static final class Keyboards {
	public final ArrayList<KeyboardLayout> keyboardLayouts = new ArrayList<KeyboardLayout>();
	public int current = -1;
	}

	public interface OnSetupKeyboardLayoutsListener {
	public void onSetupKeyboardLayouts(String inputDeviceDescriptor);
	}
	}