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The source code is released under:
Apache License
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/*********************************************************************************************************************** * ========================================== */*from w ww .j a v a 2 s . c o m*/ * Copyright (C) 2013 by Paul Oremland * http://www.linkedin.com/in/pauloremland * https://github.com/poremland * *********************************************************************************************************************** * * 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 net.oremland.rss.reader.fragments; import android.content.*; import android.graphics.*; import android.graphics.PorterDuff.Mode; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.*; import android.support.v4.view.MenuItemCompat; import android.support.v7.widget.ShareActionProvider; import android.text.TextUtils; import android.util.*; import android.view.*; import android.webkit.*; import android.widget.*; import net.oremland.rss.reader.R; import net.oremland.rss.reader.helpers.*; import net.oremland.rss.reader.models.*; public class BrowserFragment extends Fragment { private final static String FEED_ITEM_KEY = "feedItem"; private FeedItem feedItem; private Intent shareIntent; private static final FrameLayout.LayoutParams ZOOM_PARAMS = new FrameLayout.LayoutParams( ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT, Gravity.BOTTOM); public BrowserFragment() { setRetainInstance(true); setHasOptionsMenu(true); } public void setFeedItem(FeedItem item) { this.feedItem = item; } public FeedItem getFeedItem() { return this.feedItem; } protected Context getContext() { return getActivity(); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.browser, container, false); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); this.feedItem = this.getSavedFeedItem(savedInstanceState); this.initializeViews(savedInstanceState); this.loadFeed(); } private FeedItem getSavedFeedItem(Bundle savedInstanceState) { if(savedInstanceState != null) { String s = savedInstanceState.getString(FEED_ITEM_KEY, ""); if(!TextUtils.isEmpty(s)) { return ObjectSerializer.fromString(s); } } return this.feedItem; } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); this.saveFeedItem(outState); } private void saveFeedItem(Bundle outState) { if(this.feedItem != null && outState != null) { String serializedItem = ObjectSerializer.toString(this.feedItem); if(serializedItem != null) { outState.putString(FEED_ITEM_KEY, serializedItem ); } } } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); inflater.inflate(R.menu.browser_menu, menu); setupShareActionProvider(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { return this.handledViewOriginal(item) || this.handledCopyText(item) || super.onOptionsItemSelected(item); } private void setupShareActionProvider(Menu menu) { MenuItem item = menu.findItem(R.id.menu_share); if (item != null) { ShareActionProvider provider = (ShareActionProvider)MenuItemCompat.getActionProvider(item); if (provider != null) { provider.setShareIntent(this.getShareIntent()); } } } private boolean handledViewOriginal(MenuItem item) { if (item.getItemId() == R.id.menu_viewOriginal) { this.viewOriginialLink(); return true; } return false; } private boolean handledCopyText(MenuItem item) { if (item.getItemId() == R.id.menu_copyUrl) { this.copyUrlToClipboard(); return true; } return false; } private void initializeViews(Bundle savedInstanceState) { if(savedInstanceState == null && getContext() != null) { boolean isTablet = getContext().getResources().getBoolean(R.bool.isTablet); WebSettings.ZoomDensity zoomDensity = isTablet ? WebSettings.ZoomDensity.MEDIUM : WebSettings.ZoomDensity.FAR; WebView description = (WebView)getView().findViewById(R.id.description); description.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY); description.getSettings().setJavaScriptEnabled(true); description.getSettings().setPluginState(WebSettings.PluginState.ON); description.getSettings().setDefaultTextEncodingName("utf-8"); description.getSettings().setLoadWithOverviewMode(true); description.getSettings().setDefaultZoom(zoomDensity); description.getSettings().setSupportZoom(true); description.getSettings().setBuiltInZoomControls(true); description.requestFocus(View.FOCUS_DOWN); description.getSettings().setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NORMAL); description.getSettings().setUseWideViewPort(isTablet); description.setWebChromeClient(this.getWebChromeClient()); description.setWebViewClient(this.getWebViewClient()); } } public void loadFeed() { if(getFeedItem() != null) { this.setTitleText(); this.loadUrl(); this.updateShareIntent(); } } private void setTitleText() { TextView titleView = (TextView)getView().findViewById(R.id.title); titleView.setText(getFeedItem().getTitle()); } private void loadUrl() { String base64Data = Base64.encodeToString(getFeedItem().getContent().getBytes(), Base64.DEFAULT); String dataUri = String.format("data:text/html;charset=utf-8;base64,%s", base64Data); WebView description = (WebView)getView().findViewById(R.id.description); description.loadUrl(dataUri); } private WebChromeClient getWebChromeClient() { return new WebChromeClient() { public void onProgressChanged(WebView view, int progress) { if(getActivity() != null) { getActivity().setProgress(progress * 100); } } }; } protected WebViewClient getWebViewClient() { return new WebViewClient() { @Override public void onPageStarted(WebView view, String url, Bitmap favicon) { updateProgressBarVisibility(true); } @Override public void onPageFinished(WebView view, String url) { updateProgressBarVisibility(false); } }; } private void updateProgressBarVisibility(boolean visible) { if(this.getActivity() != null) { this.getActivity().setProgressBarVisibility(visible); } } public Intent getShareIntent() { if(shareIntent == null) { shareIntent = new Intent(Intent.ACTION_SEND); shareIntent.setType("text/plain"); this.updateShareIntent(); } return shareIntent; } private void updateShareIntent() { if(getFeedItem() != null && shareIntent != null) { shareIntent.putExtra(Intent.EXTRA_SUBJECT, getFeedItem().getTitle()); shareIntent.putExtra(Intent.EXTRA_TEXT, getFeedItem().getUrl()); } } public void viewOriginialLink() { try { Uri uri = Uri.parse(getFeedItem().getUrl()); Intent intent = new Intent(Intent.ACTION_VIEW, uri); this.startActivity(intent); } catch(Exception e) { Toast.makeText(getContext(), e.toString(), Toast.LENGTH_LONG).show(); } } private void copyUrlToClipboard() { ClipboardManager clipboard = (ClipboardManager)getActivity().getSystemService(Context.CLIPBOARD_SERVICE); ClipData clip = ClipData.newPlainText("Feed Item Url", getFeedItem().getUrl()); clipboard.setPrimaryClip(clip); Toast.makeText(getContext(), "Url Copied To Clipboard", Toast.LENGTH_SHORT).show(); } }