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/*
* Copyright (C) 2011 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.
*/
/**
* This is a part of the inputmethod-common static Java library.
* The original source code can be found at frameworks/opt/inputmethodcommon of Android Open Source
* Project.
*/
package com.android.inputmethodcommon;
import android.content.Context;
import android.content.Intent;
import android.graphics.drawable.Drawable;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceClickListener;
import android.preference.PreferenceScreen;
import android.provider.Settings;
import android.text.TextUtils;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodManager;
import android.view.inputmethod.InputMethodSubtype;
import java.util.List;
/* package private */ class InputMethodSettingsImpl implements InputMethodSettingsInterface {
private Preference mSubtypeEnablerPreference;
private int mInputMethodSettingsCategoryTitleRes;
private CharSequence mInputMethodSettingsCategoryTitle;
private int mSubtypeEnablerTitleRes;
private CharSequence mSubtypeEnablerTitle;
private int mSubtypeEnablerIconRes;
private Drawable mSubtypeEnablerIcon;
private InputMethodManager mImm;
private InputMethodInfo mImi;
private Context mContext;
/**
* Initialize internal states of this object.
* @param context the context for this application.
* @param prefScreen a PreferenceScreen of PreferenceActivity or PreferenceFragment.
* @return true if this application is an IME and has two or more subtypes, false otherwise.
*/
public boolean init(final Context context, final PreferenceScreen prefScreen) {
mContext = context;
mImm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
mImi = getMyImi(context, mImm);
if (mImi == null || mImi.getSubtypeCount() <= 1) {
return false;
}
mSubtypeEnablerPreference = new Preference(context);
mSubtypeEnablerPreference
.setOnPreferenceClickListener(new OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference preference) {
final CharSequence title = getSubtypeEnablerTitle(context);
final Intent intent =
new Intent(Settings.ACTION_INPUT_METHOD_SUBTYPE_SETTINGS);
intent.putExtra(Settings.EXTRA_INPUT_METHOD_ID, mImi.getId());
if (!TextUtils.isEmpty(title)) {
intent.putExtra(Intent.EXTRA_TITLE, title);
}
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
| Intent.FLAG_ACTIVITY_CLEAR_TOP);
context.startActivity(intent);
return true;
}
});
prefScreen.addPreference(mSubtypeEnablerPreference);
updateSubtypeEnabler();
return true;
}
private static InputMethodInfo getMyImi(Context context, InputMethodManager imm) {
final List<InputMethodInfo> imis = imm.getInputMethodList();
for (int i = 0; i < imis.size(); ++i) {
final InputMethodInfo imi = imis.get(i);
if (imis.get(i).getPackageName().equals(context.getPackageName())) {
return imi;
}
}
return null;
}
private static String getEnabledSubtypesLabel(
Context context, InputMethodManager imm, InputMethodInfo imi) {
if (context == null || imm == null || imi == null) return null;
final List<InputMethodSubtype> subtypes = imm.getEnabledInputMethodSubtypeList(imi, true);
final StringBuilder sb = new StringBuilder();
final int N = subtypes.size();
for (int i = 0; i < N; ++i) {
final InputMethodSubtype subtype = subtypes.get(i);
if (sb.length() > 0) {
sb.append(", ");
}
sb.append(subtype.getDisplayName(context, imi.getPackageName(),
imi.getServiceInfo().applicationInfo));
}
return sb.toString();
}
/**
* {@inheritDoc}
*/
@Override
public void setInputMethodSettingsCategoryTitle(int resId) {
mInputMethodSettingsCategoryTitleRes = resId;
updateSubtypeEnabler();
}
/**
* {@inheritDoc}
*/
@Override
public void setInputMethodSettingsCategoryTitle(CharSequence title) {
mInputMethodSettingsCategoryTitleRes = 0;
mInputMethodSettingsCategoryTitle = title;
updateSubtypeEnabler();
}
/**
* {@inheritDoc}
*/
@Override
public void setSubtypeEnablerTitle(int resId) {
mSubtypeEnablerTitleRes = resId;
updateSubtypeEnabler();
}
/**
* {@inheritDoc}
*/
@Override
public void setSubtypeEnablerTitle(CharSequence title) {
mSubtypeEnablerTitleRes = 0;
mSubtypeEnablerTitle = title;
updateSubtypeEnabler();
}
/**
* {@inheritDoc}
*/
@Override
public void setSubtypeEnablerIcon(int resId) {
mSubtypeEnablerIconRes = resId;
updateSubtypeEnabler();
}
/**
* {@inheritDoc}
*/
@Override
public void setSubtypeEnablerIcon(Drawable drawable) {
mSubtypeEnablerIconRes = 0;
mSubtypeEnablerIcon = drawable;
updateSubtypeEnabler();
}
private CharSequence getSubtypeEnablerTitle(Context context) {
if (mSubtypeEnablerTitleRes != 0) {
return context.getString(mSubtypeEnablerTitleRes);
} else {
return mSubtypeEnablerTitle;
}
}
public void updateSubtypeEnabler() {
if (mSubtypeEnablerPreference != null) {
if (mSubtypeEnablerTitleRes != 0) {
mSubtypeEnablerPreference.setTitle(mSubtypeEnablerTitleRes);
} else if (!TextUtils.isEmpty(mSubtypeEnablerTitle)) {
mSubtypeEnablerPreference.setTitle(mSubtypeEnablerTitle);
}
final String summary = getEnabledSubtypesLabel(mContext, mImm, mImi);
if (!TextUtils.isEmpty(summary)) {
mSubtypeEnablerPreference.setSummary(summary);
}
if (mSubtypeEnablerIconRes != 0) {
mSubtypeEnablerPreference.setIcon(mSubtypeEnablerIconRes);
} else if (mSubtypeEnablerIcon != null) {
mSubtypeEnablerPreference.setIcon(mSubtypeEnablerIcon);
}
}
}
}