Add Wifi Setup screen for Setup Wizard with XL size screen.

* Add WifiSettingsForSetupWizardXL as a new Activity
The activity has WifiSettings fragment in it. It also contains
several buttons, texts around the fragment.

* Making configuration UI part of Preference list.
In Wifi Setup for Setup Wizard XL, WifiSettings fragment lets
a UI for configuring access points shown inside a
PregerenceCategory object, while it has been shown as Dialog.

To achieve this action, WifiDialog is decomposed into two parts:
- WifiConfigUiBase (Mainly UI part)
- WifiConfigController (Mainly Wifi controller part)

All codes for wifi configuration in WifiDialog is now in
WifiConfigController, which is reused from
WifiConfigPreference.

* Misc stuff
- Remove AccessPoint#compareTo(). Instead,
  AccessPoint.AccessPointComparater should be used when needed.

Change-Id: I520d690d3301837d32f91dad54a973a379ce1989

src/com/android/settings/wifi/WifiConfigPreference.java

@@ -0,0 +1,129 @@
+/*
+ * 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.settings.wifi;
+
+import android.content.Context;
+import android.content.DialogInterface;
+import android.preference.Preference;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+import com.android.settings.R;
+
+/**
+ * Preference letting users modify a setting for Wifi network. This work as an alternative UI
+ * for {@link WifiDialog} without shouwing popup Dialog.
+ */
+public class WifiConfigPreference extends Preference implements WifiConfigUiBase {
+    private WifiSettings mWifiSettings;
+    private View mView;
+    private final DialogInterface.OnClickListener mListener;
+    private WifiConfigController mController;
+    private AccessPoint mAccessPoint;
+    private boolean mEdit;
+
+    private LayoutInflater mInflater;
+
+    public WifiConfigPreference(WifiSettings wifiSettings,
+            DialogInterface.OnClickListener listener,
+            AccessPoint accessPoint, boolean edit) {
+        super(wifiSettings.getActivity());
+        mWifiSettings = wifiSettings;
+        setLayoutResource(R.layout.wifi_config_preference);
+        mListener = listener;
+        mAccessPoint = accessPoint;
+        mEdit = edit;
+        mInflater = (LayoutInflater)
+                wifiSettings.getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+    }
+
+    @Override
+    protected View onCreateView(ViewGroup parent) {
+        // Called every time the list is created.
+        if (mView != null) {
+            // TODO: we need to re-forcus something.
+            return mView;
+        }
+        mView = mInflater.inflate(getLayoutResource(), parent, false);
+        mController = new WifiConfigController(this, mView, mAccessPoint, mEdit, mListener);
+        return mView;
+    }
+
+    @Override
+    public WifiConfigController getController() {
+        return mController;
+    }
+
+    public View findViewById(int id) {
+        return mView.findViewById(id);
+    }
+
+    public AccessPoint getAccessPoint() {
+        return mAccessPoint;
+    }
+
+    @Override
+    public boolean isEdit() {
+        return mEdit;
+    }
+
+    @Override
+    public LayoutInflater getLayoutInflater() {
+        return mInflater;
+    }
+
+    @Override
+    public Button getSubmitButton() {
+        return (Button)mWifiSettings.getActivity().findViewById(R.id.wifi_setup_connect);
+    }
+
+    @Override
+    public Button getForgetButton() {
+        return (Button)mWifiSettings.getActivity().findViewById(R.id.wifi_setup_forget);
+    }
+
+    @Override
+    public Button getCancelButton() {
+        return (Button)mWifiSettings.getActivity().findViewById(R.id.wifi_setup_cancel);
+    }
+
+    @Override
+    public void setSubmitButton(CharSequence text) {
+        final Button button = (Button)
+                mWifiSettings.getActivity().findViewById(R.id.wifi_setup_connect);
+        button.setVisibility(View.VISIBLE);
+
+        // test
+        mWifiSettings.getActivity().findViewById(R.id.wifi_setup_forget).setVisibility(View.GONE);
+    }
+
+    @Override
+    public void setForgetButton(CharSequence text) {
+        final Button button = (Button)
+                mWifiSettings.getActivity().findViewById(R.id.wifi_setup_forget);
+        button.setVisibility(View.VISIBLE);
+    }
+
+    @Override
+    public void setCancelButton(CharSequence text) {
+        final Button button = (Button)
+                mWifiSettings.getActivity().findViewById(R.id.wifi_setup_cancel);
+        button.setVisibility(View.VISIBLE);
+    }
+}