Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkDrawerListView.java

+// Copyright 2015 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.enhancedbookmarks;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ListView;
+
+import org.chromium.chrome.browser.BookmarksBridge.BookmarkModelObserver;
+import org.chromium.chrome.browser.enhanced_bookmarks.EnhancedBookmarksBridge.FiltersObserver;
+import org.chromium.components.bookmarks.BookmarkId;
+
+import java.util.List;
+
+/**
+ * Main drawer list view of Enhanced Bookmark UI. It is responsible for presenting different viewing
+ * modes and let users to choose.
+ */
+@SuppressLint("Instantiatable")
+class EnhancedBookmarkDrawerListView extends ListView implements EnhancedBookmarkUIObserver {
+    private EnhancedBookmarkDelegate mDelegate;
+
+    private BookmarkModelObserver mBookmarkModelObserver = new BookmarkModelObserver() {
+        @Override
+        public void bookmarkModelChanged() {
+            mDelegate.notifyStateChange(EnhancedBookmarkDrawerListView.this);
+        }
+    };
+
+    private FiltersObserver mFiltersObserver = new FiltersObserver() {
+        @Override
+        public void onFiltersChanged() {
+            mDelegate.notifyStateChange(EnhancedBookmarkDrawerListView.this);
+        }
+    };
+
+    private final EnhancedBookmarkDrawerListViewAdapter mAdapter =
+            new EnhancedBookmarkDrawerListViewAdapter();
+
+    public EnhancedBookmarkDrawerListView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        setAdapter(mAdapter);
+        setOnItemClickListener(new OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                mDelegate.closeDrawer();
+
+                EnhancedBookmarkDrawerListViewAdapter.Item item =
+                        (EnhancedBookmarkDrawerListViewAdapter.Item) mAdapter.getItem(position);
+
+                switch (item.mType) {
+                    case EnhancedBookmarkDrawerListViewAdapter.TYPE_FOLDER:
+                        mDelegate.openFolder(item.mFolderId);
+                        break;
+                    case EnhancedBookmarkDrawerListViewAdapter.TYPE_ALL_ITEMS:
+                        mDelegate.openAllBookmarks();
+                        break;
+                    case EnhancedBookmarkDrawerListViewAdapter.TYPE_FILTER:
+                        mDelegate.openFilter(item.mFilter);
+                        break;
+                    default:
+                        assert false;
+                }
+            }
+        });
+    }
+
+    void showLoadingUi() {
+        mAdapter.clear();
+        mAdapter.notifyDataSetChanged();
+        clearChoices();
+    }
+
+    // EnhancedBookmarkUIObserver implementations.
+
+    @Override
+    public void onEnhancedBookmarkDelegateInitialized(EnhancedBookmarkDelegate delegate) {
+        mDelegate = delegate;
+        delegate.getModel().addModelObserver(mBookmarkModelObserver);
+        delegate.getModel().addFiltersObserver(mFiltersObserver);
+        mAdapter.setEnhancedBookmarkUIDelegate(delegate);
+        delegate.addUIObserver(this);
+    }
+
+    @Override
+    public void onDestroy() {
+        mDelegate.getModel().removeModelObserver(mBookmarkModelObserver);
+        mDelegate.getModel().removeFiltersObserver(mFiltersObserver);
+        mDelegate.removeUIObserver(this);
+    }
+
+    @Override
+    public void onAllBookmarksStateSet() {
+        mAdapter.updateList();
+        setItemChecked(mAdapter.getItemPosition(EnhancedBookmarkDelegate.STATE_ALL_BOOKMARKS, null),
+                true);
+    }
+
+    @Override
+    public void onFolderStateSet(BookmarkId folder) {
+        mAdapter.updateList();
+        setItemChecked(mAdapter.getItemPosition(EnhancedBookmarkDelegate.STATE_FOLDER, folder),
+                true);
+    }
+
+    @Override
+    public void onFilterStateSet(String filter) {
+        mAdapter.updateList();
+        setItemChecked(mAdapter.getItemPosition(EnhancedBookmarkDelegate.STATE_FILTER, filter),
+                true);
+    }
+
+    @Override
+    public void onSelectionStateChange(List<BookmarkId> selectedBookmarks) {
+    }
+
+    @Override
+    public void onListModeChange(boolean isListModeEnabled) {}
+}