/* * 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. */ package com.android.browser.preferences; import com.android.browser.BrowserSettings; import com.android.browser.R; import android.content.Context; import android.content.SharedPreferences; import android.content.SharedPreferences.OnSharedPreferenceChangeListener; import android.content.res.Resources; import android.preference.Preference; import android.preference.PreferenceManager; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.webkit.WebSettings; import android.webkit.WebView; public class WebViewPreview extends Preference implements OnSharedPreferenceChangeListener { // 80 char line width limit? Rules are made to be broken. static final String HTML_FORMAT = "

%s

%s

%s

%s

%s

"; String HTML; private View mRoot; private WebView mWebView; public WebViewPreview( Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(context); } public WebViewPreview(Context context, AttributeSet attrs) { super(context, attrs); init(context); } public WebViewPreview(Context context) { super(context); init(context); } void init(Context context) { Resources res = context.getResources(); Object[] visualNames = res.getStringArray(R.array.pref_text_size_choices); HTML = String.format(HTML_FORMAT, visualNames); } void updatePreview() { if (mWebView == null) return; WebSettings ws = mWebView.getSettings(); BrowserSettings bs = BrowserSettings.getInstance(); ws.setMinimumFontSize(bs.getMinimumFontSize()); ws.setTextSize(bs.getTextSize()); mWebView.loadData(HTML, "text/html", "utf-8"); } @Override public View getView(View convertView, ViewGroup parent) { if (mWebView == null) { LayoutInflater inflater = LayoutInflater.from(getContext()); mRoot = inflater.inflate(R.layout.webview_preview, parent, false); mWebView = (WebView) mRoot.findViewById(R.id.webview); mWebView.setLayerType(View.LAYER_TYPE_SOFTWARE, null); } updatePreview(); return mRoot; } @Override protected void onAttachedToHierarchy(PreferenceManager preferenceManager) { super.onAttachedToHierarchy(preferenceManager); getSharedPreferences().registerOnSharedPreferenceChangeListener(this); } @Override protected void onPrepareForRemoval() { getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this); super.onPrepareForRemoval(); } @Override public void onSharedPreferenceChanged( SharedPreferences sharedPreferences, String key) { updatePreview(); } }