gecko/embedding/android/Tab.java

395 lines
12 KiB
Java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Android code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009-2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Sriram Ramasubramanian <sriram@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.gecko;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.provider.Browser;
import android.util.Log;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.InputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
public class Tab {
private static final String LOG_NAME = "Tab";
private int mId;
private String mUrl;
private String mTitle;
private Drawable mFavicon;
private String mSecurityMode;
private Drawable mThumbnail;
private List<HistoryEntry> mHistory;
private int mHistoryIndex;
private boolean mLoading;
private boolean mBookmark;
private DownloadFaviconTask mFaviconDownloader;
static class HistoryEntry {
public final String mUri;
public String mTitle;
public HistoryEntry(String uri, String title) {
mUri = uri;
mTitle = title;
}
}
public Tab() {
this(-1, "");
}
public Tab(int id, String url) {
mId = id;
mUrl = url;
mTitle = new String();
mFavicon = null;
mSecurityMode = "unknown";
mThumbnail = null;
mHistory = new ArrayList<HistoryEntry>();
mHistoryIndex = -1;
mBookmark = false;
}
public int getId() {
return mId;
}
public String getURL() {
return mUrl;
}
public String getTitle() {
return mTitle;
}
public String getDisplayTitle() {
if (mTitle != null && mTitle.length() > 0) {
return mTitle;
}
return mUrl;
}
public Drawable getFavicon() {
return mFavicon;
}
public String getSecurityMode() {
return mSecurityMode;
}
public boolean isLoading() {
return mLoading;
}
public boolean isBookmark() {
return mBookmark;
}
public void updateURL(String url) {
if (url != null && url.length() > 0) {
mUrl = new String(url);
Log.i(LOG_NAME, "Updated url: " + url + " for tab with id: " + mId);
updateBookmark();
}
}
public void updateTitle(String title) {
if (title != null && title.length() > 0) {
mTitle = new String(title);
} else {
mTitle = "";
}
Log.i(LOG_NAME, "Updated title: " + mTitle + " for tab with id: " + mId);
final HistoryEntry he = getLastHistoryEntry();
if (he != null) {
he.mTitle = mTitle;
GeckoAppShell.getHandler().post(new Runnable() {
public void run() {
GlobalHistory.getInstance().update(he.mUri, he.mTitle);
}
});
} else {
Log.e(LOG_NAME, "Requested title update on empty history stack");
}
}
public void setLoading(boolean loading) {
mLoading = loading;
}
private void setBookmark(boolean bookmark) {
mBookmark = bookmark;
}
public HistoryEntry getLastHistoryEntry() {
if (mHistory.isEmpty())
return null;
return mHistory.get(mHistoryIndex);
}
public void updateFavicon(Drawable favicon) {
mFavicon = favicon;
Log.i(LOG_NAME, "Updated favicon for tab with id: " + mId);
}
public void updateSecurityMode(String mode) {
mSecurityMode = mode;
}
private void updateBookmark() {
new CheckBookmarkTask().execute();
}
public void addBookmark() {
new AddBookmarkTask().execute();
}
public void removeBookmark() {
new RemoveBookmarkTask().execute();
}
public boolean doReload() {
if (mHistory.isEmpty())
return false;
GeckoEvent e = new GeckoEvent("Session:Reload", "");
GeckoAppShell.sendEventToGecko(e);
return true;
}
public boolean doBack() {
if (mHistoryIndex < 1) {
return false;
}
GeckoEvent e = new GeckoEvent("Session:Back", "");
GeckoAppShell.sendEventToGecko(e);
return true;
}
public boolean canDoForward() {
return (mHistoryIndex + 1 < mHistory.size());
}
public boolean doForward() {
if (mHistoryIndex + 1 >= mHistory.size()) {
return false;
}
GeckoEvent e = new GeckoEvent("Session:Forward", "");
GeckoAppShell.sendEventToGecko(e);
return true;
}
void handleSessionHistoryMessage(String event, JSONObject message) throws JSONException {
if (event.equals("New")) {
final String uri = message.getString("uri");
mHistoryIndex++;
while (mHistory.size() > mHistoryIndex) {
mHistory.remove(mHistoryIndex);
}
HistoryEntry he = new HistoryEntry(uri, null);
mHistory.add(he);
GeckoAppShell.getHandler().post(new Runnable() {
public void run() {
GlobalHistory.getInstance().add(uri);
}
});
} else if (event.equals("Back")) {
if (mHistoryIndex - 1 < 0) {
Log.e(LOG_NAME, "Received unexpected back notification");
return;
}
mHistoryIndex--;
} else if (event.equals("Forward")) {
if (mHistoryIndex + 1 >= mHistory.size()) {
Log.e(LOG_NAME, "Received unexpected forward notification");
return;
}
mHistoryIndex++;
} else if (event.equals("Goto")) {
int index = message.getInt("index");
if (index < 0 || index >= mHistory.size()) {
Log.e(LOG_NAME, "Received unexpected history-goto notification");
return;
}
mHistoryIndex = index;
} else if (event.equals("Purge")) {
mHistory.clear();
mHistoryIndex = -1;
}
}
void downloadFavicon(String url) {
if (url == null) {
try {
URL urlObj = new URL(mUrl);
url = urlObj.getProtocol() + "://" + urlObj.getAuthority() + "/favicon.ico";
} catch (MalformedURLException e) {
// Optional so not a real error
return;
}
}
try {
URL urlObj = new URL(url);
// note that the above line may throw a MalformedURLException,
// in which case we abort and don't cancel the old download task.
if (mFaviconDownloader != null) {
mFaviconDownloader.cancel(false);
Log.d(LOG_NAME, "Cancelled old favicon downloader");
}
mFaviconDownloader = new DownloadFaviconTask();
mFaviconDownloader.execute(urlObj);
} catch (MalformedURLException e) {
}
}
private class DownloadFaviconTask extends AsyncTask<URL, Void, Drawable> {
protected Drawable doInBackground(URL... args) {
Drawable image = null;
try {
URL url = args[0];
InputStream is = (InputStream) url.getContent();
image = Drawable.createFromStream(is, "src");
} catch (IOException e) {
Log.d(LOG_NAME, "Error loading favicon: " + e);
}
return image;
}
protected void onPostExecute(Drawable image) {
if (image == null)
return;
updateFavicon(image);
GeckoApp.mAppContext.faviconUpdated(Tab.this);
}
}
private class CheckBookmarkTask extends AsyncTask<Void, Void, Boolean> {
@Override
protected Boolean doInBackground(Void... unused) {
ContentResolver resolver = Tabs.getInstance().getContentResolver();
Cursor cursor = resolver.query(Browser.BOOKMARKS_URI,
null,
Browser.BookmarkColumns.URL + " = ? and " + Browser.BookmarkColumns.BOOKMARK + " = ?",
new String[] { getURL(), "1" },
Browser.BookmarkColumns.URL);
if (cursor.getCount() == 1)
return true;
else
return false;
}
@Override
protected void onPostExecute(Boolean isBookmark) {
setBookmark(isBookmark.booleanValue());
}
}
private class AddBookmarkTask extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... unused) {
ContentResolver resolver = Tabs.getInstance().getContentResolver();
Cursor cursor = resolver.query(Browser.BOOKMARKS_URI,
null,
Browser.BookmarkColumns.URL + " = ?",
new String[] { getURL() },
Browser.BookmarkColumns.URL);
ContentValues values = new ContentValues();
values.put(Browser.BookmarkColumns.BOOKMARK, "1");
values.put(Browser.BookmarkColumns.TITLE, getTitle());
if (cursor.getCount() == 1) {
//entry exists, update the bookmark flag
resolver.update(Browser.BOOKMARKS_URI,
values,
Browser.BookmarkColumns.URL + " = ?",
new String[] { getURL() });
} else {
//add a new entry
values.put(Browser.BookmarkColumns.URL, mUrl);
resolver.insert(Browser.BOOKMARKS_URI,
values);
}
return null;
}
@Override
protected void onPostExecute(Void unused) {
setBookmark(true);
}
}
private class RemoveBookmarkTask extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... unused) {
ContentResolver resolver = Tabs.getInstance().getContentResolver();
ContentValues values = new ContentValues();
values.put(Browser.BookmarkColumns.BOOKMARK, "0");
resolver.update(Browser.BOOKMARKS_URI,
values,
Browser.BookmarkColumns.URL + " = ?",
new String[] { getURL() });
return null;
}
@Override
protected void onPostExecute(Void unused) {
setBookmark(false);
}
}
}