Unify action buttons to a common widget (part 1)

- Create a preference type to host action button preferences.
- Convert app battery usage page to use the new preference
- Convert wifi detail page to use the new preference

Change-Id: I60bc473986ab46f2897e2537eb0e013fa813a4fc
Fix: 63991885
Test: robotests

src/com/android/settings/widget/ActionButtonPreference.java

@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2017 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.widget;
+
+import android.content.Context;
+import android.support.annotation.StringRes;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceViewHolder;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.Button;
+
+import com.android.settings.R;
+
+public class ActionButtonPreference extends Preference {
+
+    private final ButtonInfo mButton1Info = new ButtonInfo();
+    private final ButtonInfo mButton2Info = new ButtonInfo();
+
+    public ActionButtonPreference(Context context, AttributeSet attrs,
+            int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+        init();
+    }
+
+    public ActionButtonPreference(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        init();
+    }
+
+    public ActionButtonPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init();
+    }
+
+    public ActionButtonPreference(Context context) {
+        super(context);
+        init();
+    }
+
+    private void init() {
+        setLayoutResource(R.layout.two_action_buttons);
+        setSelectable(false);
+    }
+
+    @Override
+    public void onBindViewHolder(PreferenceViewHolder holder) {
+        super.onBindViewHolder(holder);
+        holder.setDividerAllowedAbove(false);
+        holder.setDividerAllowedBelow(false);
+        mButton1Info.mPositiveButton = (Button) holder.findViewById(R.id.button1_positive);
+        mButton1Info.mNegativeButton = (Button) holder.findViewById(R.id.button1_negative);
+        mButton2Info.mPositiveButton = (Button) holder.findViewById(R.id.button2_positive);
+        mButton2Info.mNegativeButton = (Button) holder.findViewById(R.id.button2_negative);
+
+        mButton1Info.setUpButton();
+        mButton2Info.setUpButton();
+    }
+
+    public ActionButtonPreference setButton1Text(@StringRes int textResId) {
+        final String newText = getContext().getString(textResId);
+        if (!TextUtils.equals(newText, mButton1Info.mText)) {
+            mButton1Info.mText = newText;
+            notifyChanged();
+        }
+        return this;
+    }
+
+    public ActionButtonPreference setButton1Enabled(boolean isEnabled) {
+        if (isEnabled != mButton1Info.mIsEnabled) {
+            mButton1Info.mIsEnabled = isEnabled;
+            notifyChanged();
+        }
+        return this;
+    }
+
+    public ActionButtonPreference setButton2Text(@StringRes int textResId) {
+        final String newText = getContext().getString(textResId);
+        if (!TextUtils.equals(newText, mButton2Info.mText)) {
+            mButton2Info.mText = newText;
+            notifyChanged();
+        }
+        return this;
+    }
+
+    public ActionButtonPreference setButton2Enabled(boolean isEnabled) {
+        if (isEnabled != mButton2Info.mIsEnabled) {
+            mButton2Info.mIsEnabled = isEnabled;
+            notifyChanged();
+        }
+        return this;
+    }
+
+    public ActionButtonPreference setButton1OnClickListener(View.OnClickListener listener) {
+        if (listener != mButton1Info.mListener) {
+            mButton1Info.mListener = listener;
+            notifyChanged();
+        }
+        return this;
+    }
+
+    public ActionButtonPreference setButton2OnClickListener(View.OnClickListener listener) {
+        if (listener != mButton2Info.mListener) {
+            mButton2Info.mListener = listener;
+            notifyChanged();
+        }
+        return this;
+    }
+
+    public ActionButtonPreference setButton1Positive(boolean isPositive) {
+        if (isPositive != mButton1Info.mIsPositive) {
+            mButton1Info.mIsPositive = isPositive;
+            notifyChanged();
+        }
+        return this;
+    }
+
+    public ActionButtonPreference setButton2Positive(boolean isPositive) {
+        if (isPositive != mButton2Info.mIsPositive) {
+            mButton2Info.mIsPositive = isPositive;
+            notifyChanged();
+        }
+        return this;
+    }
+    public ActionButtonPreference setButton1Visible(boolean isPositive) {
+        if (isPositive != mButton1Info.mIsVisible) {
+            mButton1Info.mIsVisible = isPositive;
+            notifyChanged();
+        }
+        return this;
+    }
+
+    public ActionButtonPreference setButton2Visible(boolean isPositive) {
+        if (isPositive != mButton2Info.mIsVisible) {
+            mButton2Info.mIsVisible = isPositive;
+            notifyChanged();
+        }
+        return this;
+    }
+
+    static class ButtonInfo {
+        private Button mPositiveButton;
+        private Button mNegativeButton;
+        private CharSequence mText;
+        private View.OnClickListener mListener;
+        private boolean mIsPositive = true;
+        private boolean mIsEnabled = true;
+        private boolean mIsVisible = true;
+
+        void setUpButton() {
+            setUpButton(mPositiveButton);
+            setUpButton(mNegativeButton);
+            if (!mIsVisible) {
+                mPositiveButton.setVisibility(View.INVISIBLE);
+                mNegativeButton.setVisibility(View.INVISIBLE);
+            } else if (mIsPositive) {
+                mPositiveButton.setVisibility(View.VISIBLE);
+                mNegativeButton.setVisibility(View.INVISIBLE);
+            } else {
+                mPositiveButton.setVisibility(View.INVISIBLE);
+                mNegativeButton.setVisibility(View.VISIBLE);
+            }
+        }
+
+        private void setUpButton(Button button) {
+            button.setText(mText);
+            button.setOnClickListener(mListener);
+            button.setEnabled(mIsEnabled);
+        }
+    }
+}