| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package org.chromium.chrome.browser; |
| |
| import android.content.Context; |
| |
| import org.chromium.chrome.browser.ActivityTabProvider.ActivityTabTabObserver; |
| import org.chromium.chrome.browser.tab.Tab; |
| import org.chromium.chrome.browser.tab.TabThemeColorHelper; |
| import org.chromium.chrome.browser.toolbar.ThemeColorProvider; |
| |
| /** A ThemeColorProvider for the current tab's theming. */ |
| public class TabThemeColorProvider extends ThemeColorProvider { |
| /** The {@link sActivityTabTabObserver} used to know when the active tab color changed. */ |
| private ActivityTabTabObserver mActivityTabTabObserver; |
| |
| public TabThemeColorProvider(Context context) { |
| super(context); |
| } |
| |
| /** |
| * @param provider A means of getting the activity's tab. |
| */ |
| public void setActivityTabProvider(ActivityTabProvider provider) { |
| mActivityTabTabObserver = new ActivityTabTabObserver(provider) { |
| @Override |
| public void onObservingDifferentTab(Tab tab, boolean hint) { |
| if (tab == null) return; |
| updatePrimaryColor(TabThemeColorHelper.getColor(tab), false); |
| } |
| |
| @Override |
| public void onDidChangeThemeColor(Tab tab, int color) { |
| updatePrimaryColor(color, true); |
| } |
| }; |
| } |
| |
| @Override |
| public void destroy() { |
| super.destroy(); |
| if (mActivityTabTabObserver != null) { |
| mActivityTabTabObserver.destroy(); |
| mActivityTabTabObserver = null; |
| } |
| } |
| } |