michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.toolbar;
michael@0: 
michael@0: import org.mozilla.gecko.PrefsHelper;
michael@0: import org.mozilla.gecko.Tab;
michael@0: import org.mozilla.gecko.Tabs;
michael@0: import org.mozilla.gecko.util.ThreadUtils;
michael@0: 
michael@0: class ToolbarTitlePrefs {
michael@0:     static final String PREF_TITLEBAR_MODE = "browser.chrome.titlebarMode";
michael@0:     static final String PREF_TRIM_URLS = "browser.urlbar.trimURLs";
michael@0: 
michael@0:     interface OnChangeListener {
michael@0:         public void onChange();
michael@0:     }
michael@0: 
michael@0:     final String[] prefs = {
michael@0:         PREF_TITLEBAR_MODE,
michael@0:         PREF_TRIM_URLS
michael@0:     };
michael@0: 
michael@0:     private boolean mShowUrl;
michael@0:     private boolean mTrimUrls;
michael@0: 
michael@0:     private Integer mPrefObserverId;
michael@0: 
michael@0:     ToolbarTitlePrefs() {
michael@0:         mShowUrl = false;
michael@0:         mTrimUrls = true;
michael@0: 
michael@0:         mPrefObserverId = PrefsHelper.getPrefs(prefs, new TitlePrefsHandler());
michael@0:     }
michael@0: 
michael@0:     boolean shouldShowUrl() {
michael@0:         return mShowUrl;
michael@0:     }
michael@0: 
michael@0:     boolean shouldTrimUrls() {
michael@0:         return mTrimUrls;
michael@0:     }
michael@0: 
michael@0:     void close() {
michael@0:         if (mPrefObserverId != null) {
michael@0:              PrefsHelper.removeObserver(mPrefObserverId);
michael@0:              mPrefObserverId = null;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     private class TitlePrefsHandler extends PrefsHelper.PrefHandlerBase {
michael@0:         @Override
michael@0:         public void prefValue(String pref, String str) {
michael@0:             // Handles PREF_TITLEBAR_MODE, which is always a string.
michael@0:             int value = Integer.parseInt(str);
michael@0:             boolean shouldShowUrl = (value == 1);
michael@0: 
michael@0:             if (shouldShowUrl == mShowUrl) {
michael@0:                 return;
michael@0:             }
michael@0:             mShowUrl = shouldShowUrl;
michael@0: 
michael@0:             triggerChangeListener();
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public void prefValue(String pref, boolean value) {
michael@0:             // Handles PREF_TRIM_URLS, which should usually be a boolean.
michael@0:             if (value == mTrimUrls) {
michael@0:                 return;
michael@0:             }
michael@0:             mTrimUrls = value;
michael@0: 
michael@0:             triggerChangeListener();
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public boolean isObserver() {
michael@0:             // We want to be notified of changes to be able to switch mode
michael@0:             // without restarting.
michael@0:             return true;
michael@0:         }
michael@0: 
michael@0:         private void triggerChangeListener() {
michael@0:             ThreadUtils.postToUiThread(new Runnable() {
michael@0:                 @Override
michael@0:                 public void run() {
michael@0:                     final Tabs tabs = Tabs.getInstance();
michael@0:                     final Tab tab = tabs.getSelectedTab();
michael@0:                     if (tab != null) {
michael@0:                         tabs.notifyListeners(tab, Tabs.TabEvents.TITLE);
michael@0:                     }
michael@0:                 }
michael@0:             });
michael@0:         }
michael@0:     }
michael@0: }