[Home] Show the app menu icons as a footer

chrome/android/java/src/org/chromium/chrome/browser/appmenu/AppMenuIconRowFooter.java

+// Copyright 2017 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.appmenu;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.LinearLayout;
+
+import org.chromium.base.ApiCompatibilityUtils;
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.bookmarks.BookmarkBridge;
+import org.chromium.chrome.browser.download.DownloadUtils;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.browser.widget.TintedImageButton;
+
+/**
+ * A {@link LinearLayout} that displays a horizontal row of icons for page actions.
+ */
+public class AppMenuIconRowFooter extends LinearLayout implements View.OnClickListener {
+    private ChromeActivity mActivity;
+    private AppMenu mAppMenu;
+
+    private TintedImageButton mForwardButton;
+    private TintedImageButton mBookmarkButton;
+    private TintedImageButton mDownloadButton;
+    private TintedImageButton mPageInfoButton;
+    private TintedImageButton mReloadButton;
+
+    public AppMenuIconRowFooter(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+
+        mForwardButton = (TintedImageButton) findViewById(R.id.forward_menu_id);
+        mForwardButton.setOnClickListener(this);
+
+        mBookmarkButton = (TintedImageButton) findViewById(R.id.bookmark_this_page_id);
+        mBookmarkButton.setOnClickListener(this);
+
+        mDownloadButton = (TintedImageButton) findViewById(R.id.offline_page_id);
+        mDownloadButton.setOnClickListener(this);
+
+        mPageInfoButton = (TintedImageButton) findViewById(R.id.info_menu_id);
+        mPageInfoButton.setOnClickListener(this);
+
+        mReloadButton = (TintedImageButton) findViewById(R.id.reload_menu_id);
+        mReloadButton.setOnClickListener(this);
+    }
+
+    /**
+     * Initializes the icons, setting enabled state, drawables, and content descriptions.
+     * @param activity The {@link ChromeActivity} displaying the menu.
+     * @param appMenu The {@link AppMenu} that contains the icon row.
+     * @param bookmarkBridge The {@link BookmarkBridge} used to retrieve information about
+     *                       bookmarks.
+     */
+    public void initialize(
+            ChromeActivity activity, AppMenu appMenu, BookmarkBridge bookmarkBridge) {
+        mActivity = activity;
+        mAppMenu = appMenu;
+        Tab currentTab = mActivity.getActivityTab();
+
+        mForwardButton.setEnabled(currentTab.canGoForward());
+
+        updateBookmarkMenuItem(bookmarkBridge, currentTab);
+
+        mDownloadButton.setEnabled(DownloadUtils.isAllowedToDownloadPage(currentTab));
+
+        mReloadButton.setImageResource(R.drawable.btn_reload_stop);
+        loadingStateChanged(currentTab.isLoading());
+    }
+
+    @Override
+    public void onClick(View v) {
+        mActivity.onMenuOrKeyboardAction(v.getId(), true);
+        mAppMenu.dismiss();
+    }
+
+    /**
+     * Called when the current tab's load state  has changed.
+     * @param isLoading Whether the tab is currently loading.
+     */
+    public void loadingStateChanged(boolean isLoading) {
+        mReloadButton.getDrawable().setLevel(isLoading
+                        ? AppMenuPropertiesDelegate.RELOAD_BUTTON_LEVEL_STOP_LOADING
+                        : AppMenuPropertiesDelegate.RELOAD_BUTTON_LEVEL_RELOAD);
+        mReloadButton.setContentDescription(isLoading
+                        ? mActivity.getString(R.string.accessibility_btn_stop_loading)
+                        : mActivity.getString(R.string.accessibility_btn_refresh));
+    }
+
+    private void updateBookmarkMenuItem(BookmarkBridge bookmarkBridge, Tab currentTab) {
+        mBookmarkButton.setEnabled(bookmarkBridge.isEditBookmarksEnabled());
+
+        if (currentTab.getBookmarkId() != Tab.INVALID_BOOKMARK_ID) {
+            mBookmarkButton.setImageResource(R.drawable.btn_star_filled);
+            mBookmarkButton.setContentDescription(mActivity.getString(R.string.edit_bookmark));
+            mBookmarkButton.setTint(ApiCompatibilityUtils.getColorStateList(
+                    getResources(), R.color.blue_mode_tint));
+        } else {
+            mBookmarkButton.setImageResource(R.drawable.btn_star);
+            mBookmarkButton.setContentDescription(
+                    mActivity.getString(R.string.accessibility_menu_bookmark));
+        }
+    }
+
+    TintedImageButton getForwardButtonForTests() {
+        return mForwardButton;
+    }
+
+    TintedImageButton getBookmarkButtonForTests() {
+        return mBookmarkButton;
+    }
+
+    TintedImageButton getDownloadButtonForTests() {
+        return mDownloadButton;
+    }
+
+    TintedImageButton getPageInfoButtonForTests() {
+        return mPageInfoButton;
+    }
+
+    TintedImageButton getReloadButtonForTests() {
+        return mReloadButton;
+    }
+}