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/*
* Copyright (C) 2010 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.systemui.statusbar.tablet;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.IBinder;
import android.provider.Settings;
import android.util.Log;
import android.util.Slog;
import android.util.AttributeSet;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodManager;
import android.view.inputmethod.InputMethodSubtype;
import android.view.View;
import android.widget.ImageView;
import com.android.server.InputMethodManagerService;
import com.android.systemui.R;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class InputMethodButton extends ImageView {
private static final String TAG = "StatusBar/InputMethodButton";
private static final boolean DEBUG = false;
private static final int ID_IME_SWITCH_BUTTON = R.id.imeSwitchButton;
// IME shortcut button is disabled.
private static final int ID_IME_SHORTCUT_BUTTON = 0;
// other services we wish to talk to
private final InputMethodManager mImm;
private final int mId;
// Cache of InputMethodsInfo
private final HashMap<String, InputMethodInfo> mInputMethodsInfo =
new HashMap<String, InputMethodInfo>();
private ImageView mIcon;
private IBinder mToken;
private boolean mKeyboardShown;
private InputMethodInfo mShortcutInfo;
private InputMethodSubtype mShortcutSubtype;
public InputMethodButton(Context context, AttributeSet attrs) {
super(context, attrs);
mKeyboardShown = false;
// Resource Id of the input method button. This id is defined in status_bar.xml
mId = getId();
// IME hookup
mImm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
// TODO: read the current icon & visibility state directly from the service
// TODO: register for notifications about changes to visibility & subtype from service
setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (mId) {
case ID_IME_SWITCH_BUTTON:
mImm.showInputMethodPicker();
break;
case ID_IME_SHORTCUT_BUTTON:
if (mToken != null && mShortcutInfo != null) {
mImm.setInputMethodAndSubtype(
mToken, mShortcutInfo.getId(), mShortcutSubtype);
}
break;
}
}
});
}
@Override
protected void onAttachedToWindow() {
mIcon = (ImageView) findViewById(mId);
refreshStatusIcon(mKeyboardShown);
}
private InputMethodInfo getCurrentInputMethodInfo() {
String curInputMethodId = Settings.Secure.getString(getContext()
.getContentResolver(), Settings.Secure.DEFAULT_INPUT_METHOD);
if (!mInputMethodsInfo.containsKey(curInputMethodId)) {
mInputMethodsInfo.clear();
List<InputMethodInfo> imis = mImm.getInputMethodList();
for (int i = 0; i < imis.size(); ++i) {
InputMethodInfo imi = imis.get(i);
mInputMethodsInfo.put(imi.getId(), imi);
}
}
return mInputMethodsInfo.get(curInputMethodId);
}
// TODO: Need to show an appropriate drawable for this shortcut button,
// if there are two or more shortcut input methods contained in this button.
// And need to add other methods to handle multiple shortcuts as appropriate.
private Drawable getShortcutInputMethodAndSubtypeDrawable() {
Map<InputMethodInfo, List<InputMethodSubtype>> shortcuts =
mImm.getShortcutInputMethodsAndSubtypes();
if (shortcuts.size() > 0) {
for (InputMethodInfo imi: shortcuts.keySet()) {
List<InputMethodSubtype> subtypes = shortcuts.get(imi);
// TODO: Returns the first found IMI for now. Should handle all shortcuts as
// appropriate.
mShortcutInfo = imi;
// TODO: Pick up the first found subtype for now. Should handle all subtypes
// as appropriate.
mShortcutSubtype = subtypes.size() > 0 ? subtypes.get(0) : null;
return getSubtypeIcon(mShortcutInfo, mShortcutSubtype);
}
}
return null;
}
private Drawable getSubtypeIcon(InputMethodInfo imi, InputMethodSubtype subtype) {
final PackageManager pm = getContext().getPackageManager();
if (imi != null) {
if (DEBUG) {
Log.d(TAG, "Update icons of IME: " + imi.getPackageName() + ","
+ subtype.getLocale() + "," + subtype.getMode());
}
if (subtype != null) {
return pm.getDrawable(imi.getPackageName(), subtype.getIconResId(),
imi.getServiceInfo().applicationInfo);
} else if (imi.getSubtypes().size() > 0) {
return pm.getDrawable(imi.getPackageName(),
imi.getSubtypes().get(0).getIconResId(),
imi.getServiceInfo().applicationInfo);
} else {
try {
return pm.getApplicationInfo(imi.getPackageName(), 0).loadIcon(pm);
} catch (PackageManager.NameNotFoundException e) {
Log.w(TAG, "IME can't be found: " + imi.getPackageName());
}
}
}
return null;
}
// Display IME switcher icon only when all of the followings are true:
// * There is only one enabled IME on the device. (Note that the IME should be the system IME)
// * There are no explicitly enabled (by the user) subtypes of the IME, or the IME doesn't have
// its subtypes at all
private boolean needsToShowIMEButton() {
List<InputMethodInfo> imis = mImm.getEnabledInputMethodList();
final int size = imis.size();
return size > 1
|| (size == 1 && mImm.getEnabledInputMethodSubtypeList(imis.get(0)).size() > 1);
}
private void refreshStatusIcon(boolean keyboardShown) {
if (!keyboardShown) {
setVisibility(View.INVISIBLE);
return;
} else {
setVisibility(View.VISIBLE);
}
Drawable icon = null;
switch (mId) {
case ID_IME_SWITCH_BUTTON:
// TODO: Just showing the first shortcut IME subtype for now. Should handle all
// shortcuts as appropriate.
icon = getSubtypeIcon(getCurrentInputMethodInfo(),
mImm.getCurrentInputMethodSubtype());
break;
case ID_IME_SHORTCUT_BUTTON:
icon = getShortcutInputMethodAndSubtypeDrawable();
break;
}
if (mIcon != null) {
if (icon == null) {
mIcon.setImageResource(R.drawable.ic_sysbar_ime_default);
} else {
mIcon.setImageDrawable(icon);
}
}
}
public void setIMEButtonVisible(IBinder token, boolean visible) {
mToken = token;
mKeyboardShown = visible ? needsToShowIMEButton() : false;
refreshStatusIcon(mKeyboardShown);
}
}
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