src/com/android/browser/BrowserHistoryPage.java - platform/packages/apps/Browser - Git at Google

 /*
  * Copyright (C) 2008 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;

 import android.app.Activity;
 import android.app.Fragment;
 import android.app.LoaderManager.LoaderCallbacks;
 import android.content.ClipboardManager;
 import android.content.Context;
 import android.content.CursorLoader;
 import android.content.Intent;
 import android.content.Loader;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.os.Bundle;
 import android.provider.Browser;
 import android.provider.BrowserContract.History;
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.webkit.WebIconDatabase.IconListener;
 import android.widget.ExpandableListView;
 import android.widget.ExpandableListView.ExpandableListContextMenuInfo;
 import android.widget.ExpandableListView.OnChildClickListener;
 import android.widget.Toast;

 /**
  * Activity for displaying the browser's history, divided into
  * days of viewing.
  */
 public class BrowserHistoryPage extends Fragment
         implements LoaderCallbacks<Cursor>, OnChildClickListener {

     static final int LOADER_HISTORY = 1;

     BookmarksHistoryCallbacks mCallbacks;
     ExpandableListView mList;
     View mEmptyView;
     HistoryAdapter mAdapter;
     boolean mDisableNewWindow;
     HistoryItem mContextHeader;

     // Implementation of WebIconDatabase.IconListener
     class IconReceiver implements IconListener {
         @Override
         public void onReceivedIcon(String url, Bitmap icon) {
             mAdapter.notifyDataSetChanged();
         }
     }

     // Instance of IconReceiver
     final IconReceiver mIconReceiver = new IconReceiver();

     static interface HistoryQuery {
         static final String[] PROJECTION = new String[] {
                 History._ID, // 0
                 History.DATE_LAST_VISITED, // 1
                 History.TITLE, // 2
                 History.URL, // 3
                 History.FAVICON, // 4
         };

         static final int INDEX_ID = 0;
         static final int INDEX_DATE_LAST_VISITED = 1;
         static final int INDEX_TITE = 2;
         static final int INDEX_URL = 3;
         static final int INDEX_FAVICON = 4;
     }

     private void copy(CharSequence text) {
         ClipboardManager cm = (ClipboardManager) getActivity().getSystemService(
                 Context.CLIPBOARD_SERVICE);
         cm.setText(text);
     }

     @Override
     public Loader<Cursor> onCreateLoader(int id, Bundle args) {
         switch (id) {
             case LOADER_HISTORY: {
                 CursorLoader loader = new CursorLoader(getActivity(), History.CONTENT_URI,
                         HistoryQuery.PROJECTION, null, null, null);
                 return loader;
             }

             default: {
                 throw new IllegalArgumentException();
             }
         }
     }

     @Override
     public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
         switch (loader.getId()) {
             case LOADER_HISTORY: {
                 mAdapter.changeCursor(data);

                 // Add an empty view late, so it does not claim an empty
                 // history before the adapter is present
                 mList.setEmptyView(mEmptyView);

                 // Do not post the runnable if there is nothing in the list.
                 if (mList.getExpandableListAdapter().getGroupCount() > 0) {
                     mList.post(new Runnable() {
                         @Override
                         public void run() {
                             // In case the history gets cleared before this
                             // event happens
                             if (mList.getExpandableListAdapter().getGroupCount() > 0) {
                                 mList.expandGroup(0);
                             }
                         }
                     });
                 }
                 break;
             }

             default: {
                 throw new IllegalArgumentException();
             }
         }
     }

     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);

         setHasOptionsMenu(true);

         Bundle args = getArguments();
         mDisableNewWindow = args.getBoolean("disable_new_window", false);
     }

     @Override
     public void onAttach(Activity activity) {
         super.onAttach(activity);
         mCallbacks = (BookmarksHistoryCallbacks) activity;
     }

     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
             Bundle savedInstanceState) {
         View root = inflater.inflate(R.layout.history, container, false);
         mList = (ExpandableListView) root.findViewById(android.R.id.list);
         mList.setOnCreateContextMenuListener(this);
         mList.setOnChildClickListener(this);
         mAdapter = new HistoryAdapter(getActivity());
         mList.setAdapter(mAdapter);

         mEmptyView = root.findViewById(android.R.id.empty);

         // Start the loader
         getLoaderManager().initLoader(LOADER_HISTORY, null, this);

         // Register to receive icons in case they haven't all been loaded.
         CombinedBookmarkHistoryActivity.getIconListenerSet().addListener(mIconReceiver);

         return root;
     }

     @Override
     public void onDestroy() {
         super.onDestroy();
         CombinedBookmarkHistoryActivity.getIconListenerSet().removeListener(mIconReceiver);
     }

     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         inflater.inflate(R.menu.history, menu);
     }

     @Override
     public void onPrepareOptionsMenu(Menu menu) {
         menu.findItem(R.id.clear_history_menu_id).setVisible(
                 Browser.canClearHistory(getActivity().getContentResolver()));
     }

     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case R.id.clear_history_menu_id:
                 Browser.clearHistory(getActivity().getContentResolver());
                 // BrowserHistoryPage is always a child of
                 // CombinedBookmarkHistoryActivity
                 mCallbacks.onRemoveParentChildRelationShips();
                 return true;

             default:
                 break;
         }
         return super.onOptionsItemSelected(item);
     }

     @Override
     public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
         ExpandableListContextMenuInfo i = (ExpandableListContextMenuInfo) menuInfo;
         // Do not allow a context menu to come up from the group views.
         if (!(i.targetView instanceof HistoryItem)) {
             return;
         }

         // Inflate the menu
         Activity parent = getActivity();
         MenuInflater inflater = parent.getMenuInflater();
         inflater.inflate(R.menu.historycontext, menu);

         HistoryItem historyItem = (HistoryItem) i.targetView;

         // Setup the header
         if (mContextHeader == null) {
             mContextHeader = new HistoryItem(parent);
         } else if (mContextHeader.getParent() != null) {
             ((ViewGroup) mContextHeader.getParent()).removeView(mContextHeader);
         }
         historyItem.copyTo(mContextHeader);
         menu.setHeaderView(mContextHeader);

         // Only show open in new tab if it was not explicitly disabled
         if (mDisableNewWindow) {
             menu.findItem(R.id.new_window_context_menu_id).setVisible(false);
         }
         // For a bookmark, provide the option to remove it from bookmarks
         if (historyItem.isBookmark()) {
             MenuItem item = menu.findItem(R.id.save_to_bookmarks_menu_id);
             item.setTitle(R.string.remove_from_bookmarks);
         }
         // decide whether to show the share link option
         PackageManager pm = parent.getPackageManager();
         Intent send = new Intent(Intent.ACTION_SEND);
         send.setType("text/plain");
         ResolveInfo ri = pm.resolveActivity(send, PackageManager.MATCH_DEFAULT_ONLY);
         menu.findItem(R.id.share_link_context_menu_id).setVisible(ri != null);

         super.onCreateContextMenu(menu, v, menuInfo);
     }

     @Override
     public boolean onContextItemSelected(MenuItem item) {
         ExpandableListContextMenuInfo i =
             (ExpandableListContextMenuInfo) item.getMenuInfo();
         HistoryItem historyItem = (HistoryItem) i.targetView;
         String url = historyItem.getUrl();
         String title = historyItem.getName();
         Activity activity = getActivity();
         switch (item.getItemId()) {
             case R.id.open_context_menu_id:
                 mCallbacks.onUrlSelected(url, false);
                 return true;
             case R.id.new_window_context_menu_id:
                 mCallbacks.onUrlSelected(url, true);
                 return true;
             case R.id.save_to_bookmarks_menu_id:
                 if (historyItem.isBookmark()) {
                     Bookmarks.removeFromBookmarks(activity, activity.getContentResolver(),
                             url, title);
                 } else {
                     Browser.saveBookmark(activity, title, url);
                 }
                 return true;
             case R.id.share_link_context_menu_id:
                 Browser.sendString(activity, url,
                         activity.getText(R.string.choosertitle_sharevia).toString());
                 return true;
             case R.id.copy_url_context_menu_id:
                 copy(url);
                 return true;
             case R.id.delete_context_menu_id:
                 Browser.deleteFromHistory(activity.getContentResolver(), url);
                 return true;
             case R.id.homepage_context_menu_id:
                 BrowserSettings.getInstance().setHomePage(activity, url);
                 Toast.makeText(activity, R.string.homepage_set, Toast.LENGTH_LONG).show();
                 return true;
             default:
                 break;
         }
         return super.onContextItemSelected(item);
     }

     @Override
     public boolean onChildClick(ExpandableListView parent, View v,
             int groupPosition, int childPosition, long id) {
         if (v instanceof BookmarkItem) {
             mCallbacks.onUrlSelected(((BookmarkItem) v).getUrl(), false);
             return true;
         }
         return false;
     }

     private class HistoryAdapter extends DateSortedExpandableListAdapter {
         HistoryAdapter(Context context) {
             super(context, HistoryQuery.INDEX_DATE_LAST_VISITED);
         }

         @Override
         public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
                 View convertView, ViewGroup parent) {
             BookmarkItem item;
             if (null == convertView || !(convertView instanceof BookmarkItem)) {
                 item = new BookmarkItem(getContext());
                 // Add padding on the left so it will be indented from the
                 // arrows on the group views.
                 item.setPadding(item.getPaddingLeft() + 10,
                         item.getPaddingTop(),
                         item.getPaddingRight(),
                         item.getPaddingBottom());
             } else {
                 item = (BookmarkItem) convertView;
             }

             // Bail early if the Cursor is closed.
             if (!moveCursorToChildPosition(groupPosition, childPosition)) {
                 return item;
             }

             item.setName(getString(HistoryQuery.INDEX_TITE));
             String url = getString(HistoryQuery.INDEX_URL);
             item.setUrl(url);
             byte[] data = getBlob(HistoryQuery.INDEX_FAVICON);
             if (data != null) {
                 item.setFavicon(BitmapFactory.decodeByteArray(data, 0,
                         data.length));
             } else {
                 item.setFavicon(CombinedBookmarkHistoryActivity
                         .getIconListenerSet().getFavicon(url));
             }
             return item;
         }
     }
 }
	/*
	* Copyright (C) 2008 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;

	import android.app.Activity;
	import android.app.Fragment;
	import android.app.LoaderManager.LoaderCallbacks;
	import android.content.ClipboardManager;
	import android.content.Context;
	import android.content.CursorLoader;
	import android.content.Intent;
	import android.content.Loader;
	import android.content.pm.PackageManager;
	import android.content.pm.ResolveInfo;
	import android.database.Cursor;
	import android.graphics.Bitmap;
	import android.graphics.BitmapFactory;
	import android.os.Bundle;
	import android.provider.Browser;
	import android.provider.BrowserContract.History;
	import android.view.ContextMenu;
	import android.view.ContextMenu.ContextMenuInfo;
	import android.view.LayoutInflater;
	import android.view.Menu;
	import android.view.MenuInflater;
	import android.view.MenuItem;
	import android.view.View;
	import android.view.ViewGroup;
	import android.webkit.WebIconDatabase.IconListener;
	import android.widget.ExpandableListView;
	import android.widget.ExpandableListView.ExpandableListContextMenuInfo;
	import android.widget.ExpandableListView.OnChildClickListener;
	import android.widget.Toast;

	/**
	* Activity for displaying the browser's history, divided into
	* days of viewing.
	*/
	public class BrowserHistoryPage extends Fragment
	implements LoaderCallbacks<Cursor>, OnChildClickListener {

	static final int LOADER_HISTORY = 1;

	BookmarksHistoryCallbacks mCallbacks;
	ExpandableListView mList;
	View mEmptyView;
	HistoryAdapter mAdapter;
	boolean mDisableNewWindow;
	HistoryItem mContextHeader;

	// Implementation of WebIconDatabase.IconListener
	class IconReceiver implements IconListener {
	@Override
	public void onReceivedIcon(String url, Bitmap icon) {
	mAdapter.notifyDataSetChanged();
	}
	}

	// Instance of IconReceiver
	final IconReceiver mIconReceiver = new IconReceiver();

	static interface HistoryQuery {
	static final String[] PROJECTION = new String[] {
	History._ID, // 0
	History.DATE_LAST_VISITED, // 1
	History.TITLE, // 2
	History.URL, // 3
	History.FAVICON, // 4
	};

	static final int INDEX_ID = 0;
	static final int INDEX_DATE_LAST_VISITED = 1;
	static final int INDEX_TITE = 2;
	static final int INDEX_URL = 3;
	static final int INDEX_FAVICON = 4;
	}

	private void copy(CharSequence text) {
	ClipboardManager cm = (ClipboardManager) getActivity().getSystemService(
	Context.CLIPBOARD_SERVICE);
	cm.setText(text);
	}

	@Override
	public Loader<Cursor> onCreateLoader(int id, Bundle args) {
	switch (id) {
	case LOADER_HISTORY: {
	CursorLoader loader = new CursorLoader(getActivity(), History.CONTENT_URI,
	HistoryQuery.PROJECTION, null, null, null);
	return loader;
	}

	default: {
	throw new IllegalArgumentException();
	}
	}
	}

	@Override
	public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
	switch (loader.getId()) {
	case LOADER_HISTORY: {
	mAdapter.changeCursor(data);

	// Add an empty view late, so it does not claim an empty
	// history before the adapter is present
	mList.setEmptyView(mEmptyView);

	// Do not post the runnable if there is nothing in the list.
	if (mList.getExpandableListAdapter().getGroupCount() > 0) {
	mList.post(new Runnable() {
	@Override
	public void run() {
	// In case the history gets cleared before this
	// event happens
	if (mList.getExpandableListAdapter().getGroupCount() > 0) {
	mList.expandGroup(0);
	}
	}
	});
	}
	break;
	}

	default: {
	throw new IllegalArgumentException();
	}
	}
	}

	@Override
	public void onCreate(Bundle icicle) {
	super.onCreate(icicle);

	setHasOptionsMenu(true);

	Bundle args = getArguments();
	mDisableNewWindow = args.getBoolean("disable_new_window", false);
	}

	@Override
	public void onAttach(Activity activity) {
	super.onAttach(activity);
	mCallbacks = (BookmarksHistoryCallbacks) activity;
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
	Bundle savedInstanceState) {
	View root = inflater.inflate(R.layout.history, container, false);
	mList = (ExpandableListView) root.findViewById(android.R.id.list);
	mList.setOnCreateContextMenuListener(this);
	mList.setOnChildClickListener(this);
	mAdapter = new HistoryAdapter(getActivity());
	mList.setAdapter(mAdapter);

	mEmptyView = root.findViewById(android.R.id.empty);

	// Start the loader
	getLoaderManager().initLoader(LOADER_HISTORY, null, this);

	// Register to receive icons in case they haven't all been loaded.
	CombinedBookmarkHistoryActivity.getIconListenerSet().addListener(mIconReceiver);

	return root;
	}

	@Override
	public void onDestroy() {
	super.onDestroy();
	CombinedBookmarkHistoryActivity.getIconListenerSet().removeListener(mIconReceiver);
	}

	@Override
	public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
	inflater.inflate(R.menu.history, menu);
	}

	@Override
	public void onPrepareOptionsMenu(Menu menu) {
	menu.findItem(R.id.clear_history_menu_id).setVisible(
	Browser.canClearHistory(getActivity().getContentResolver()));
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	switch (item.getItemId()) {
	case R.id.clear_history_menu_id:
	Browser.clearHistory(getActivity().getContentResolver());
	// BrowserHistoryPage is always a child of
	// CombinedBookmarkHistoryActivity
	mCallbacks.onRemoveParentChildRelationShips();
	return true;

	default:
	break;
	}
	return super.onOptionsItemSelected(item);
	}

	@Override
	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
	ExpandableListContextMenuInfo i = (ExpandableListContextMenuInfo) menuInfo;
	// Do not allow a context menu to come up from the group views.
	if (!(i.targetView instanceof HistoryItem)) {
	return;
	}

	// Inflate the menu
	Activity parent = getActivity();
	MenuInflater inflater = parent.getMenuInflater();
	inflater.inflate(R.menu.historycontext, menu);

	HistoryItem historyItem = (HistoryItem) i.targetView;

	// Setup the header
	if (mContextHeader == null) {
	mContextHeader = new HistoryItem(parent);
	} else if (mContextHeader.getParent() != null) {
	((ViewGroup) mContextHeader.getParent()).removeView(mContextHeader);
	}
	historyItem.copyTo(mContextHeader);
	menu.setHeaderView(mContextHeader);

	// Only show open in new tab if it was not explicitly disabled
	if (mDisableNewWindow) {
	menu.findItem(R.id.new_window_context_menu_id).setVisible(false);
	}
	// For a bookmark, provide the option to remove it from bookmarks
	if (historyItem.isBookmark()) {
	MenuItem item = menu.findItem(R.id.save_to_bookmarks_menu_id);
	item.setTitle(R.string.remove_from_bookmarks);
	}
	// decide whether to show the share link option
	PackageManager pm = parent.getPackageManager();
	Intent send = new Intent(Intent.ACTION_SEND);
	send.setType("text/plain");
	ResolveInfo ri = pm.resolveActivity(send, PackageManager.MATCH_DEFAULT_ONLY);
	menu.findItem(R.id.share_link_context_menu_id).setVisible(ri != null);

	super.onCreateContextMenu(menu, v, menuInfo);
	}

	@Override
	public boolean onContextItemSelected(MenuItem item) {
	ExpandableListContextMenuInfo i =
	(ExpandableListContextMenuInfo) item.getMenuInfo();
	HistoryItem historyItem = (HistoryItem) i.targetView;
	String url = historyItem.getUrl();
	String title = historyItem.getName();
	Activity activity = getActivity();
	switch (item.getItemId()) {
	case R.id.open_context_menu_id:
	mCallbacks.onUrlSelected(url, false);
	return true;
	case R.id.new_window_context_menu_id:
	mCallbacks.onUrlSelected(url, true);
	return true;
	case R.id.save_to_bookmarks_menu_id:
	if (historyItem.isBookmark()) {
	Bookmarks.removeFromBookmarks(activity, activity.getContentResolver(),
	url, title);
	} else {
	Browser.saveBookmark(activity, title, url);
	}
	return true;
	case R.id.share_link_context_menu_id:
	Browser.sendString(activity, url,
	activity.getText(R.string.choosertitle_sharevia).toString());
	return true;
	case R.id.copy_url_context_menu_id:
	copy(url);
	return true;
	case R.id.delete_context_menu_id:
	Browser.deleteFromHistory(activity.getContentResolver(), url);
	return true;
	case R.id.homepage_context_menu_id:
	BrowserSettings.getInstance().setHomePage(activity, url);
	Toast.makeText(activity, R.string.homepage_set, Toast.LENGTH_LONG).show();
	return true;
	default:
	break;
	}
	return super.onContextItemSelected(item);
	}

	@Override
	public boolean onChildClick(ExpandableListView parent, View v,
	int groupPosition, int childPosition, long id) {
	if (v instanceof BookmarkItem) {
	mCallbacks.onUrlSelected(((BookmarkItem) v).getUrl(), false);
	return true;
	}
	return false;
	}

	private class HistoryAdapter extends DateSortedExpandableListAdapter {
	HistoryAdapter(Context context) {
	super(context, HistoryQuery.INDEX_DATE_LAST_VISITED);
	}

	@Override
	public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
	View convertView, ViewGroup parent) {
	BookmarkItem item;
	if (null == convertView \|\| !(convertView instanceof BookmarkItem)) {
	item = new BookmarkItem(getContext());
	// Add padding on the left so it will be indented from the
	// arrows on the group views.
	item.setPadding(item.getPaddingLeft() + 10,
	item.getPaddingTop(),
	item.getPaddingRight(),
	item.getPaddingBottom());
	} else {
	item = (BookmarkItem) convertView;
	}

	// Bail early if the Cursor is closed.
	if (!moveCursorToChildPosition(groupPosition, childPosition)) {
	return item;
	}

	item.setName(getString(HistoryQuery.INDEX_TITE));
	String url = getString(HistoryQuery.INDEX_URL);
	item.setUrl(url);
	byte[] data = getBlob(HistoryQuery.INDEX_FAVICON);
	if (data != null) {
	item.setFavicon(BitmapFactory.decodeByteArray(data, 0,
	data.length));
	} else {
	item.setFavicon(CombinedBookmarkHistoryActivity
	.getIconListenerSet().getFavicon(url));
	}
	return item;
	}
	}
	}