gecko/mobile/android/base/Tabs.java

220 lines
6.9 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 java.util.*;
import android.content.ContentResolver;
import android.graphics.drawable.*;
import android.util.Log;
import org.json.JSONObject;
import org.json.JSONException;
public class Tabs implements GeckoEventListener {
private static final String LOGTAG = "GeckoTabs";
private static int selectedTab = -1;
private HashMap<Integer, Tab> tabs;
private ArrayList<Tab> order;
private ContentResolver resolver;
private Tabs() {
tabs = new HashMap<Integer, Tab>();
order = new ArrayList<Tab>();
GeckoAppShell.registerGeckoEventListener("SessionHistory:New", this);
GeckoAppShell.registerGeckoEventListener("SessionHistory:Back", this);
GeckoAppShell.registerGeckoEventListener("SessionHistory:Forward", this);
GeckoAppShell.registerGeckoEventListener("SessionHistory:Goto", this);
GeckoAppShell.registerGeckoEventListener("SessionHistory:Purge", this);
}
public int getCount() {
return tabs.size();
}
public Tab addTab(JSONObject params) throws JSONException {
int id = params.getInt("tabID");
if (tabs.containsKey(id))
return tabs.get(id);
String url = params.getString("uri");
Boolean external = params.getBoolean("external");
int parentId = params.getInt("parentId");
String title = params.getString("title");
Tab tab = new Tab(id, url, external, parentId, title);
tabs.put(id, tab);
order.add(tab);
Log.i(LOGTAG, "Added a tab with id: " + id + ", url: " + url);
return tab;
}
public void removeTab(int id) {
if (tabs.containsKey(id)) {
order.remove(getTab(id));
tabs.remove(id);
Log.i(LOGTAG, "Removed a tab with id: " + id);
}
}
public Tab selectTab(int id) {
if (!tabs.containsKey(id))
return null;
selectedTab = id;
return tabs.get(id);
}
public int getIndexOf(Tab tab) {
return order.lastIndexOf(tab);
}
public Tab getTabAt(int index) {
if (index >= 0 && index < order.size())
return order.get(index);
else
return null;
}
public Tab getSelectedTab() {
return tabs.get(selectedTab);
}
public int getSelectedTabId() {
return selectedTab;
}
public boolean isSelectedTab(Tab tab) {
return (tab.getId() == selectedTab);
}
public Tab getTab(int id) {
if (getCount() == 0)
return null;
if (!tabs.containsKey(id))
return null;
return tabs.get(id);
}
/** Close tab and then select the default next tab */
public void closeTab(Tab tab) {
closeTab(tab, getNextTab(tab));
}
/** Close tab and then select nextTab */
public void closeTab(Tab tab, Tab nextTab) {
if (tab == null || nextTab == null)
return;
GeckoAppShell.sendEventToGecko(new GeckoEvent("Tab:Select", String.valueOf(nextTab.getId())));
GeckoAppShell.sendEventToGecko(new GeckoEvent("Tab:Close", String.valueOf(tab.getId())));
}
/** Return the tab that will be selected by default after this one is closed */
public Tab getNextTab(Tab tab) {
Tab selectedTab = getSelectedTab();
if (selectedTab != tab)
return selectedTab;
int index = getIndexOf(tab);
Tab nextTab = getTabAt(index + 1);
if (nextTab == null)
nextTab = getTabAt(index - 1);
Tab parent = getTab(tab.getParentId());
if (parent != null) {
// If the next tab is a sibling, switch to it. Otherwise go back to the parent.
if (nextTab != null && nextTab.getParentId() == tab.getParentId())
return nextTab;
else
return parent;
}
return nextTab;
}
public HashMap<Integer, Tab> getTabs() {
if (getCount() == 0)
return null;
return tabs;
}
public ArrayList<Tab> getTabsInOrder() {
if (getCount() == 0)
return null;
return order;
}
public void setContentResolver(ContentResolver resolver) {
this.resolver = resolver;
}
public ContentResolver getContentResolver() {
return resolver;
}
//Making Tabs a singleton class
private static class TabsInstanceHolder {
private static final Tabs INSTANCE = new Tabs();
}
public static Tabs getInstance() {
return Tabs.TabsInstanceHolder.INSTANCE;
}
// GeckoEventListener implementation
public void handleMessage(String event, JSONObject message) {
try {
if (event.startsWith("SessionHistory:")) {
Tab tab = getTab(message.getInt("tabID"));
if (tab != null) {
event = event.substring("SessionHistory:".length());
tab.handleSessionHistoryMessage(event, message);
}
}
} catch (Exception e) {
Log.i(LOGTAG, "handleMessage throws " + e + " for message: " + event);
}
}
}