gecko-dev/mobile/android/base/tabs/TabStrip.java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

package org.mozilla.gecko.tabs;

import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageButton;

import org.mozilla.gecko.R;
import org.mozilla.gecko.Tab;
import org.mozilla.gecko.Tabs;
import org.mozilla.gecko.widget.ThemedLinearLayout;

public class TabStrip extends ThemedLinearLayout {
    private static final String LOGTAG = "GeckoTabStrip";

    private static final int IMAGE_LEVEL_NORMAL = 0;
    private static final int IMAGE_LEVEL_PRIVATE = 1;

    private final TabStripView tabStripView;
    private final ImageButton addTabButton;

    private final TabsListener tabsListener;

    public TabStrip(Context context) {
        this(context, null);
    }

    public TabStrip(Context context, AttributeSet attrs) {
        super(context, attrs);
        setOrientation(HORIZONTAL);

        LayoutInflater.from(context).inflate(R.layout.tab_strip, this);
        tabStripView = (TabStripView) findViewById(R.id.tab_strip);

        addTabButton = (ImageButton) findViewById(R.id.add_tab);
        addTabButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final Tabs tabs = Tabs.getInstance();
                if (isPrivateMode()) {
                    tabs.addPrivateTab();
                } else {
                    tabs.addTab();
                }
            }
        });

        tabsListener = new TabsListener();
    }

    @Override
    public void onAttachedToWindow() {
        super.onAttachedToWindow();

        Tabs.registerOnTabsChangedListener(tabsListener);
        tabStripView.refreshTabs();
    }

    @Override
    public void onDetachedFromWindow() {
        super.onDetachedFromWindow();

        Tabs.unregisterOnTabsChangedListener(tabsListener);
        tabStripView.clearTabs();
    }

    @Override
    public void setPrivateMode(boolean isPrivate) {
        super.setPrivateMode(isPrivate);
        addTabButton.setImageLevel(isPrivate ? IMAGE_LEVEL_PRIVATE : IMAGE_LEVEL_NORMAL);
    }

    private class TabsListener implements Tabs.OnTabsChangedListener {
        @Override
        public void onTabChanged(Tab tab, Tabs.TabEvents msg, Object data) {
            switch (msg) {
                case RESTORED:
                case ADDED:
                    // Refresh the list to make sure the new tab is
                    // added in the right position.
                    tabStripView.refreshTabs();
                    break;

                case CLOSED:
                    tabStripView.removeTab(tab);
                    break;

                case SELECTED:
                    // Update the selected position, then fall through...
                    tabStripView.selectTab(tab);
                    setPrivateMode(tab.isPrivate());
                case UNSELECTED:
                    // We just need to update the style for the unselected tab...
                case TITLE:
                case FAVICON:
                case RECORDING_CHANGE:
                    tabStripView.updateTab(tab);
                    break;
            }
        }
    }
}