Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/omnibox/OmniboxResultsAdapter.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.omnibox;
+
+import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+
+import org.chromium.base.VisibleForTesting;
+
+import java.util.List;
+
+/**
+ * Adapter for providing data and views to the omnibox results list.
+ */
+@VisibleForTesting
+public class OmniboxResultsAdapter extends BaseAdapter {
+
+    private final List<OmniboxResultItem> mSuggestionItems;
+    private final Context mContext;
+    private final LocationBar mLocationBar;
+    private OmniboxSuggestionDelegate mSuggestionDelegate;
+    private boolean mUseDarkColors = true;
+
+    public OmniboxResultsAdapter(
+            Context context,
+            LocationBar locationBar,
+            List<OmniboxResultItem> suggestionItems) {
+        mContext = context;
+        mLocationBar = locationBar;
+        mSuggestionItems = suggestionItems;
+    }
+
+    public void notifySuggestionsChanged() {
+        notifyDataSetChanged();
+    }
+
+    @Override
+    public int getCount() {
+        return mSuggestionItems.size();
+    }
+
+    @Override
+    public Object getItem(int position) {
+        return mSuggestionItems.get(position);
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return position;
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        SuggestionView suggestionView;
+        if (convertView != null && convertView instanceof SuggestionView) {
+            suggestionView = (SuggestionView) convertView;
+        } else {
+            suggestionView = new SuggestionView(mContext, mLocationBar);
+        }
+        suggestionView.init(
+                mSuggestionItems.get(position), mSuggestionDelegate, position, mUseDarkColors);
+        return suggestionView;
+    }
+
+    /**
+     * Set the selection delegate for suggestion entries in the adapter.
+     *
+     * @param delegate The delegate for suggestion selections.
+     */
+    public void setSuggestionDelegate(OmniboxSuggestionDelegate delegate) {
+        mSuggestionDelegate = delegate;
+    }
+
+    /**
+     * @return The selection delegate for suggestion entries in the adapter.
+     */
+    @VisibleForTesting
+    public OmniboxSuggestionDelegate getSuggestionDelegate() {
+        return mSuggestionDelegate;
+    }
+
+    /**
+     * Specifies the visual state to be used by the suggestions.
+     * @param useDarkColors Whether dark colors should be used for fonts and icons.
+     */
+    public void setUseDarkColors(boolean useDarkColors) {
+        mUseDarkColors = useDarkColors;
+    }
+
+    /**
+     * Handler for actions that happen on suggestion view.
+     */
+    @VisibleForTesting
+    public static interface OmniboxSuggestionDelegate {
+        /**
+         * Triggered when the user selects one of the omnibox suggestions to navigate to.
+         * @param suggestion The OmniboxSuggestion which was selected.
+         * @param position Position of the suggestion in the drop down view.
+         */
+        public void onSelection(OmniboxSuggestion suggestion, int position);
+
+        /**
+         * Triggered when the user selects to refine one of the omnibox suggestions.
+         * @param suggestion
+         */
+        public void onRefineSuggestion(OmniboxSuggestion suggestion);
+
+        /**
+         * Triggered when the user navigates to one of the suggestions without clicking on it.
+         * @param suggestion
+         */
+        public void onSetUrlToSuggestion(OmniboxSuggestion suggestion);
+
+        /**
+         * Triggered before we show a modal dialog triggered through suggestions UI (e.g. the
+         * delete suggestions confirmation dialog).
+         */
+        public void onShowModal();
+
+        /**
+         * Triggered during the modal dialog dismissal.
+         */
+        public void onHideModal();
+
+        /**
+         * Triggered when the user indicates they want to delete a suggestion.
+         * @param position The position of the suggestion in the drop down view.
+         */
+        public void onDeleteSuggestion(int position);
+
+        /**
+         * Triggered when the user touches the suggestion view.
+         */
+        public void onGestureDown();
+
+        /**
+         * Triggered when text width information is updated.
+         * These values should be used to calculate max text widths.
+         * @param requiredWidth a new required width.
+         * @param matchContentsWidth a new match contents width.
+         */
+        public void onTextWidthsUpdated(float requiredWidth, float matchContentsWidth);
+
+        /**
+         * @return max required width for the suggestion.
+         */
+        public float getMaxRequiredWidth();
+
+        /**
+         * @return max match contents width for the suggestion.
+         */
+        public float getMaxMatchContentsWidth();
+    }
+
+    /**
+     * Simple wrapper around the omnibox suggestions provided in the backend and the query that
+     * matched it.
+     */
+    @VisibleForTesting
+    public static class OmniboxResultItem {
+        private final OmniboxSuggestion mSuggestion;
+        private final String mMatchedQuery;
+
+        public OmniboxResultItem(OmniboxSuggestion suggestion, String matchedQuery) {
+            mSuggestion = suggestion;
+            mMatchedQuery = matchedQuery;
+        }
+
+        /**
+         * @return The omnibox suggestion for this item.
+         */
+        public OmniboxSuggestion getSuggestion() {
+            return mSuggestion;
+        }
+
+        /**
+         * @return The user query that triggered this suggestion to be shown.
+         */
+        public String getMatchedQuery() {
+            return mMatchedQuery;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (!(o instanceof OmniboxResultItem)) {
+                return false;
+            }
+
+            OmniboxResultItem item = (OmniboxResultItem) o;
+            return mMatchedQuery.equals(item.mMatchedQuery) && mSuggestion.equals(item.mSuggestion);
+        }
+
+        @Override
+        public int hashCode() {
+            return 53 * mMatchedQuery.hashCode() ^ mSuggestion.hashCode();
+        }
+    }
+}