/*
* Copyright (C) 2007 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.wifi;
import com.android.settings.R;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.text.InputType;
import android.text.TextUtils;
import android.text.format.Formatter;
import android.text.method.PasswordTransformationMethod;
import android.text.method.TransformationMethod;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TableLayout;
import android.widget.TextView;
public class AccessPointDialog extends AlertDialog implements DialogInterface.OnClickListener,
AdapterView.OnItemSelectedListener, View.OnClickListener {
private static final String TAG = "AccessPointDialog";
private static final String INSTANCE_KEY_ACCESS_POINT_STATE =
"com.android.settings.wifi.AccessPointDialog:accessPointState";
private static final String INSTANCE_KEY_MODE =
"com.android.settings.wifi.AccessPointDialog:mode";
private static final String INSTANCE_KEY_CUSTOM_TITLE =
"com.android.settings.wifi.AccessPointDialog:customTitle";
private static final String INSTANCE_KEY_AUTO_SECURITY_ALLOWED =
"com.android.settings.wifi.AccessPointDialog:autoSecurityAllowed";
private static final int POSITIVE_BUTTON = BUTTON1;
private static final int NEGATIVE_BUTTON = BUTTON2;
private static final int NEUTRAL_BUTTON = BUTTON3;
/** The dialog should show info connectivity functionality */
public static final int MODE_INFO = 0;
/** The dialog should configure the detailed AP properties */
public static final int MODE_CONFIGURE = 1;
/** The dialog should have the password field and connect/cancel */
public static final int MODE_RETRY_PASSWORD = 2;
// These should be matched with the XML. Both arrays in XML depend on this
// ordering!
private static final int SECURITY_AUTO = 0;
private static final int SECURITY_NONE = 1;
private static final int SECURITY_WEP = 2;
private static final int SECURITY_WPA_PERSONAL = 3;
private static final int SECURITY_WPA2_PERSONAL = 4;
private static final int[] WEP_TYPE_VALUES = {
AccessPointState.WEP_PASSWORD_AUTO, AccessPointState.WEP_PASSWORD_ASCII,
AccessPointState.WEP_PASSWORD_HEX
};
// Button positions, default to impossible values
private int mConnectButtonPos = Integer.MAX_VALUE;
private int mForgetButtonPos = Integer.MAX_VALUE;
private int mSaveButtonPos = Integer.MAX_VALUE;
// Client configurable items. Generally, these should be saved in instance state
private int mMode = MODE_INFO;
private boolean mAutoSecurityAllowed = true;
private CharSequence mCustomTitle;
// This does not need to be saved in instance state.
private WifiLayer mWifiLayer;
private AccessPointState mState;
// General views
private View mView;
private TextView mPasswordText;
private EditText mPasswordEdit;
private CheckBox mShowPasswordCheckBox;
// Info-specific views
private ViewGroup mTable;
// Configure-specific views
private EditText mSsidEdit;
private Spinner mSecuritySpinner;
private Spinner mWepTypeSpinner;
public AccessPointDialog(Context context, WifiLayer wifiLayer) {
super(context);
mWifiLayer = wifiLayer;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
onLayout();
onFill();
super.onCreate(savedInstanceState);
}
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
// Set to a class loader that can find AccessPointState
savedInstanceState.setClassLoader(getClass().getClassLoader());
mState = savedInstanceState.getParcelable(INSTANCE_KEY_ACCESS_POINT_STATE);
mState.setContext(getContext());
mMode = savedInstanceState.getInt(INSTANCE_KEY_MODE, mMode);
mAutoSecurityAllowed = savedInstanceState.getBoolean(INSTANCE_KEY_AUTO_SECURITY_ALLOWED,
mAutoSecurityAllowed);
mCustomTitle = savedInstanceState.getCharSequence(INSTANCE_KEY_CUSTOM_TITLE);
if (mCustomTitle != null) {
setTitle(mCustomTitle);
}
// This is called last since it depends on the above values
super.onRestoreInstanceState(savedInstanceState);
if (mShowPasswordCheckBox != null) {
// Restore the show-password-state on the edit text
setShowPassword(mShowPasswordCheckBox.isChecked());
}
}
@Override
public Bundle onSaveInstanceState() {
Bundle bundle = super.onSaveInstanceState();
bundle.putParcelable(INSTANCE_KEY_ACCESS_POINT_STATE, mState);
bundle.putInt(INSTANCE_KEY_MODE, mMode);
bundle.putBoolean(INSTANCE_KEY_AUTO_SECURITY_ALLOWED, mAutoSecurityAllowed);
bundle.putCharSequence(INSTANCE_KEY_CUSTOM_TITLE, mCustomTitle);
return bundle;
}
/**
* Sets state to show in this dialog.
*
* @param state The state.
*/
public void setState(AccessPointState state) {
mState = state;
}
/**
* Sets the dialog mode.
* @param mode One of {@link #MODE_CONFIGURE} or {@link #MODE_INFO}
*/
public void setMode(int mode) {
mMode = mode;
}
public void setAutoSecurityAllowed(boolean autoSecurityAllowed) {
mAutoSecurityAllowed = autoSecurityAllowed;
}
@Override
public void setTitle(CharSequence title) {
super.setTitle(title);
mCustomTitle = title;
}
@Override
public void setTitle(int titleId) {
setTitle(getContext().getString(titleId));
}
/** Called after flags are set, the dialog's layout/etc should be set up here */
private void onLayout() {
final Context context = getContext();
final String ssid = mState.getHumanReadableSsid();
int positiveButtonResId = 0;
int negativeButtonResId = R.string.cancel;
int neutralButtonResId = 0;
if (mCustomTitle == null) {
// Generic title is the SSID
// We don't want to trigger this as a custom title, so call super's
super.setTitle(ssid);
}
setInverseBackgroundForced(true);
boolean defaultPasswordVisibility = true;
if (mMode == MODE_CONFIGURE) {
setLayout(R.layout.wifi_ap_configure);
positiveButtonResId = R.string.wifi_save_config;
mSaveButtonPos = POSITIVE_BUTTON;
} else if (mMode == MODE_INFO) {
setLayout(R.layout.wifi_ap_info);
if (mState.isConnectable()) {
if (mCustomTitle == null) {
// We don't want to trigger this as a custom title, so call super's
super.setTitle(context.getString(R.string.connect_to_blank, ssid));
}
positiveButtonResId = R.string.connect;
mConnectButtonPos = POSITIVE_BUTTON;
}
if (mState.isForgetable()) {
if (positiveButtonResId == 0) {
positiveButtonResId = R.string.forget_network;
mForgetButtonPos = POSITIVE_BUTTON;
} else {
neutralButtonResId = R.string.forget_network;
mForgetButtonPos = NEUTRAL_BUTTON;
}
}
} else if (mMode == MODE_RETRY_PASSWORD) {
setLayout(R.layout.wifi_ap_retry_password);
positiveButtonResId = R.string.connect;
mConnectButtonPos = POSITIVE_BUTTON;
setGenericPasswordVisible(true);
defaultPasswordVisibility = false;
}
if (defaultPasswordVisibility) {
if (!mState.configured && mState.seen && mState.hasSecurity()) {
setGenericPasswordVisible(true);
} else {
setGenericPasswordVisible(false);
}
}
setButtons(positiveButtonResId, negativeButtonResId, neutralButtonResId);
}
/** Called when we need to set our member variables to point to the views. */
private void onReferenceViews(View view) {
mPasswordText = (TextView) view.findViewById(R.id.password_text);
mPasswordEdit = (EditText) view.findViewById(R.id.password_edit);
mShowPasswordCheckBox = (CheckBox) view.findViewById(R.id.show_password_checkbox);
if (mShowPasswordCheckBox != null) {
mShowPasswordCheckBox.setOnClickListener(this);
}
if (mMode == MODE_CONFIGURE) {
mSsidEdit = (EditText) view.findViewById(R.id.ssid_edit);
mSecuritySpinner = (Spinner) view.findViewById(R.id.security_spinner);
mSecuritySpinner.setOnItemSelectedListener(this);
setSecuritySpinnerAdapter();
mWepTypeSpinner = (Spinner) view.findViewById(R.id.wep_type_spinner);
} else if (mMode == MODE_INFO) {
mTable = (ViewGroup) view.findViewById(R.id.table);
}
}
private void setSecuritySpinnerAdapter() {
Context context = getContext();
int arrayResId = mAutoSecurityAllowed ? R.array.wifi_security_entries
: R.array.wifi_security_without_auto_entries;
ArrayAdapter<CharSequence> adapter = new ArrayAdapter<CharSequence>(context,
android.R.layout.simple_spinner_item,
context.getResources().getStringArray(arrayResId));
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
mSecuritySpinner.setAdapter(adapter);
}
/** Called when the widgets are in-place waiting to be filled with data */
private void onFill() {
// Appears in the order added
if (mMode == MODE_INFO) {
if (mState.primary) {
addInfoRow(R.string.wifi_status, mState.getSummarizedStatus());
addInfoRow(R.string.wifi_link_speed, mState.linkSpeed + WifiInfo.LINK_SPEED_UNITS);
}
if (mState.seen) {
addInfoRow(R.string.signal, getSignalResId(mState.signal));
}
if (mState.security != null) {
addInfoRow(R.string.security, mState.getHumanReadableSecurity());
}
if (mState.primary && mState.ipAddress != 0) {
addInfoRow(R.string.ip_address, Formatter.formatIpAddress(mState.ipAddress));
}
} else if (mMode == MODE_CONFIGURE) {
String ssid = mState.getHumanReadableSsid();
if (!TextUtils.isEmpty(ssid)) {
mSsidEdit.setText(ssid);
}
mPasswordEdit.setHint(R.string.wifi_password_unchanged);
}
updatePasswordCaption(mState.security);
}
private void updatePasswordCaption(String security) {
if (mPasswordText != null && security != null
&& security.equals(AccessPointState.WEP)) {
mPasswordText.setText(R.string.please_type_hex_key);
} else {
mPasswordText.setText(R.string.please_type_passphrase);
}
}
private void addInfoRow(int nameResId, String value) {
View rowView = getLayoutInflater().inflate(R.layout.wifi_ap_info_row, mTable, false);
((TextView) rowView.findViewById(R.id.name)).setText(nameResId);
((TextView) rowView.findViewById(R.id.value)).setText(value);
mTable.addView(rowView);
}
private void addInfoRow(int nameResId, int valueResId) {
addInfoRow(nameResId, getContext().getString(valueResId));
}
private void setButtons(int positiveResId, int negativeResId, int neutralResId) {
final Context context = getContext();
if (positiveResId > 0) {
setButton(context.getString(positiveResId), this);
}
if (negativeResId > 0) {
setButton2(context.getString(negativeResId), this);
}
if (neutralResId > 0) {
setButton3(context.getString(neutralResId), this);
}
}
private void setLayout(int layoutResId) {
setView(mView = getLayoutInflater().inflate(layoutResId, null));
onReferenceViews(mView);
}
public void onClick(DialogInterface dialog, int which) {
if (which == mForgetButtonPos) {
handleForget();
} else if (which == mConnectButtonPos) {
handleConnect();
} else if (which == mSaveButtonPos) {
handleSave();
}
}
private void handleForget() {
if (!replaceStateWithWifiLayerInstance()) return;
mWifiLayer.forgetNetwork(mState);
}
private void handleConnect() {
if (!replaceStateWithWifiLayerInstance()) {
Log.w(TAG, "Assuming connecting to a new network.");
}
/*
* If the network is secured and they haven't entered a password, popup
* an error. Allow empty passwords if the state already has a password
* set (since in that scenario, an empty password means keep the old
* password).
*/
String password = getEnteredPassword();
boolean passwordIsEmpty = TextUtils.isEmpty(password);
/*
* When 'retry password', they can not enter a blank password. In any
* other mode, we let them enter a blank password if the state already
* has a password.
*/
if (passwordIsEmpty && (!mState.hasPassword() || mMode == MODE_RETRY_PASSWORD)
&& (mState.security != null) && !mState.security.equals(AccessPointState.OPEN)) {
new AlertDialog.Builder(getContext())
.setTitle(R.string.error_title)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage(R.string.wifi_password_incorrect_error)
.setPositiveButton(android.R.string.ok, null)
.show();
return;
}
if (!passwordIsEmpty) {
mState.setPassword(password);
}
mWifiLayer.connectToNetwork(mState);
}
private void handleSave() {
replaceStateWithWifiLayerInstance();
String ssid = mSsidEdit.getText().toString();
String password = mPasswordEdit.getText().toString();
mState.setSsid(ssid);
int securityType = getSecurityTypeFromSpinner();
if (!TextUtils.isEmpty(password)) {
switch (securityType) {
case SECURITY_WPA_PERSONAL: {
mState.setSecurity(AccessPointState.WPA);
mState.setPassword(password);
break;
}
case SECURITY_WPA2_PERSONAL: {
mState.setSecurity(AccessPointState.WPA2);
mState.setPassword(password);
break;
}
case SECURITY_AUTO: {
mState.setPassword(password);
break;
}
case SECURITY_WEP: {
mState.setSecurity(AccessPointState.WEP);
mState.setPassword(password,
WEP_TYPE_VALUES[mWepTypeSpinner.getSelectedItemPosition()]);
break;
}
}
} else {
mState.setSecurity(AccessPointState.OPEN);
}
if (securityType == SECURITY_NONE) {
mState.setSecurity(AccessPointState.OPEN);
}
if (!mWifiLayer.saveNetwork(mState)) {
return;
}
// Connect right away if they've touched it
if (!mWifiLayer.connectToNetwork(mState)) {
return;
}
}
/**
* Replaces our {@link #mState} with the equal WifiLayer instance. This is useful after
* we unparceled the state previously and before we are calling methods on {@link #mWifiLayer}.
*
* @return Whether WifiLayer was able to find an equal state in its set.
*/
private boolean replaceStateWithWifiLayerInstance() {
AccessPointState state = mWifiLayer.getWifiLayerApInstance(mState);
if (state == null) {
return false;
}
mState = state;
return true;
}
private int getSecurityTypeFromSpinner() {
int position = mSecuritySpinner.getSelectedItemPosition();
// If there is no AUTO choice, the position needs 1 added to get
// to the proper spinner position -> security constants mapping
return mAutoSecurityAllowed ? position : position + 1;
}
private String getEnteredPassword() {
return mPasswordEdit != null ? mPasswordEdit.getText().toString() : null;
}
/**
* Call the one you want to hide first.
*/
private void setWepVisible(boolean visible) {
setGenericPasswordVisible(visible);
int visibility = visible ? View.VISIBLE : View.GONE;
mWepTypeSpinner.setVisibility(visibility);
}
/**
* @see #setWepVisible(boolean)
*/
private void setGenericPasswordVisible(boolean visible) {
int visibility = visible ? View.VISIBLE : View.GONE;
mPasswordText.setVisibility(visibility);
mPasswordEdit.setVisibility(visibility);
mShowPasswordCheckBox.setVisibility(visibility);
}
public void onItemSelected(AdapterView parent, View view, int position, long id) {
if (parent == mSecuritySpinner) {
handleSecurityChange(getSecurityTypeFromSpinner());
}
}
public void onNothingSelected(AdapterView parent) {
}
private void handleSecurityChange(int security) {
switch (security) {
case SECURITY_NONE: {
setWepVisible(false);
setGenericPasswordVisible(false);
break;
}
case SECURITY_WEP: {
setGenericPasswordVisible(false);
setWepVisible(true);
updatePasswordCaption(AccessPointState.WEP);
break;
}
case SECURITY_AUTO: {
setWepVisible(false);
setGenericPasswordVisible(mState.hasSecurity());
// Shows the generic 'wireless password'
updatePasswordCaption(AccessPointState.WPA);
break;
}
case SECURITY_WPA_PERSONAL:
case SECURITY_WPA2_PERSONAL: {
setWepVisible(false);
setGenericPasswordVisible(true);
// Both WPA and WPA2 show the same caption, so either is ok
updatePasswordCaption(AccessPointState.WPA);
break;
}
}
}
private static int getSignalResId(int signal) {
switch (WifiManager.calculateSignalLevel(signal, 4)) {
case 0: {
return R.string.wifi_signal_0;
}
case 1: {
return R.string.wifi_signal_1;
}
case 2: {
return R.string.wifi_signal_2;
}
case 3: {
return R.string.wifi_signal_3;
}
}
return 0;
}
public void onClick(View v) {
if (v == mShowPasswordCheckBox) {
setShowPassword(mShowPasswordCheckBox.isChecked());
}
}
private void setShowPassword(boolean showPassword) {
if (mPasswordEdit != null) {
mPasswordEdit.setInputType(InputType.TYPE_CLASS_TEXT |
(showPassword ? InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD
: InputType.TYPE_TEXT_VARIATION_PASSWORD));
}
}
}
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