8a963babe2
Depends-On: I5b1dccb5d103ece3112acf38889bae16273b092f Change-Id: I116aed2bb805f723a5bf2ec9eb94257de0b4a7b5
127 lines
4.0 KiB
Java
127 lines
4.0 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings;
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import android.app.Fragment;
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import android.graphics.drawable.Drawable;
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import android.os.Bundle;
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import android.text.TextUtils;
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import android.view.View;
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import android.view.ViewGroup;
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public abstract class HighlightingFragment extends InstrumentedFragment {
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private static final String TAG = "HighlightSettingsFragment";
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private static final int DELAY_HIGHLIGHT_DURATION_MILLIS = 400;
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private static final String SAVE_HIGHLIGHTED_KEY = "android:view_highlighted";
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private String mViewKey;
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private boolean mViewHighlighted = false;
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private Drawable mHighlightDrawable;
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@Override
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public void onCreate(Bundle icicle) {
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super.onCreate(icicle);
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if (icicle != null) {
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mViewHighlighted = icicle.getBoolean(SAVE_HIGHLIGHTED_KEY);
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}
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}
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@Override
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public void onSaveInstanceState(Bundle outState) {
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super.onSaveInstanceState(outState);
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outState.putBoolean(SAVE_HIGHLIGHTED_KEY, mViewHighlighted);
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}
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@Override
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public void onActivityCreated(Bundle savedInstanceState) {
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super.onActivityCreated(savedInstanceState);
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final Bundle args = getArguments();
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if (args != null) {
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mViewKey = args.getString(SettingsActivity.EXTRA_FRAGMENT_ARG_KEY);
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highlightViewIfNeeded();
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}
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}
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public void highlightViewIfNeeded() {
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if (!mViewHighlighted &&!TextUtils.isEmpty(mViewKey)) {
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highlightView(mViewKey);
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}
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}
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private Drawable getHighlightDrawable() {
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if (mHighlightDrawable == null) {
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mHighlightDrawable = getActivity().getDrawable(R.drawable.preference_highlight);
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}
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return mHighlightDrawable;
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}
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private void highlightView(String key) {
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final Drawable highlight = getHighlightDrawable();
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// Try locating the View thru its Tag / Key
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final View view = findViewForKey(getView(), key);
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if (view != null ) {
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view.setBackground(highlight);
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getView().postDelayed(new Runnable() {
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@Override
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public void run() {
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final int centerX = view.getWidth() / 2;
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final int centerY = view.getHeight() / 2;
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highlight.setHotspot(centerX, centerY);
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view.setPressed(true);
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view.setPressed(false);
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}
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}, DELAY_HIGHLIGHT_DURATION_MILLIS);
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mViewHighlighted = true;
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}
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}
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private View findViewForKey(View root, String key) {
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if (checkTag(root, key)) {
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return root;
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}
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if (root instanceof ViewGroup) {
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final ViewGroup group = (ViewGroup) root;
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final int count = group.getChildCount();
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for (int n = 0; n < count; n++) {
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final View child = group.getChildAt(n);
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final View view = findViewForKey(child, key);
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if (view != null) {
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return view;
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}
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}
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}
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return null;
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}
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private boolean checkTag(View view, String key) {
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final Object tag = view.getTag(R.id.preference_highlight_key);
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if (tag == null || !(tag instanceof String)) {
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return false;
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}
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final String viewKey = (String) tag;
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return (!TextUtils.isEmpty(viewKey) && viewKey.equals(key));
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}
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}
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