[Contextual Search] Fetch and display thumbnails returned in resolution response

chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java
index f2d836b303e8352ca60e52cca77d0c24dfab7b4b..2f26df970521341350b8d00769ac9d2883f27f21 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanel.java
@@ -487,6 +487,9 @@ public class ContextualSearchPanel extends OverlayPanel {
      * @param searchTerm The string that represents the search term.
      */
     public void setSearchTerm(String searchTerm) {
+        mThumbnailUrl = "";
+        mThumbnailVisible = false;
+
         getSearchBarControl().setSearchTerm(searchTerm);
         mPanelMetrics.onSearchRequestStarted();
     }
@@ -497,6 +500,9 @@ public class ContextualSearchPanel extends OverlayPanel {
      * @param end The portion of the context from the selection to its end.
      */
     public void setSearchContext(String selection, String end) {
+        mThumbnailUrl = "";
+        mThumbnailVisible = false;
+
         getSearchBarControl().setSearchContext(selection, end);
         mPanelMetrics.onSearchRequestStarted();
     }
@@ -513,11 +519,13 @@ public class ContextualSearchPanel extends OverlayPanel {
     /**
      * Handles showing the resolved search term in the SearchBar.
      * @param searchTerm The string that represents the search term.
+     * @param thumbnailUrl The URL of the thumbnail to display.
      */
-    public void onSearchTermResolved(String searchTerm) {
+    public void onSearchTermResolved(String searchTerm, String thumbnailUrl) {
         mPanelMetrics.onSearchTermResolved();
         getSearchBarControl().setSearchTerm(searchTerm);
         getSearchBarControl().animateSearchTermResolution();
+        mThumbnailUrl = thumbnailUrl;
     }
 
     // ============================================================================================
@@ -674,13 +682,74 @@ public class ContextualSearchPanel extends OverlayPanel {
 
     /**
      * @param shouldAnimateIconSprite Whether the search provider icon sprite should be animated.
-     * @param isAnimationDisabledByTrial Whether animating the search provider icon is disabled by a
-     *                                   field trial.
      */
-    public void setShouldAnimateIconSprite(boolean shouldAnimateIconSprite,
-                                           boolean isAnimationDisabledByTrial) {
-        getIconSpriteControl().setShouldAnimateAppearance(shouldAnimateIconSprite,
-                isAnimationDisabledByTrial);
+    public void setShouldAnimateIconSprite(boolean shouldAnimateIconSprite) {
+        getIconSpriteControl().setShouldAnimateAppearance(shouldAnimateIconSprite);
+    }
+
+    // ============================================================================================
+    // Thumbnail
+    // ============================================================================================
+
+    // TODO(twellington): The thumbnail and icon sprite should probably be moved to
+    //                    ContextualSearchBarControl since they are displayed in the bar. This
+    //                    would also help facilitate showing the thumbnail and a caption at the
+    //                    same time.
+
+    /**
+     * The URL of the thumbnail to display.
+     */
+    private String mThumbnailUrl;
+
+    /**
+     * The height and width of the thumbnail.
+     */
+    private int mThumbnailSize;
+
+    /**
+     * Whether the thumbnail is visible.
+     */
+    private boolean mThumbnailVisible;
+
+    /**
+     * @return The URL used to fetch a thumbnail to display in the SearchBar. Will return an empty
+     *         string if no thumbnail is available.
+     */
+    public String getThumbnailUrl() {
+        return mThumbnailUrl != null ? mThumbnailUrl : "";
+    }
+
+    /**
+     * @return The height and width of the thumbnail in px.
+     */
+    public int getThumbnailSize() {
+        if (mThumbnailSize == 0) {
+            mThumbnailSize = mContext.getResources().getDimensionPixelSize(
+                    R.dimen.contextual_search_thumbnail_size);
+        }
+        return mThumbnailSize;
+    }
+
+    /**
+     * @return Whether the thumbnail is visible.
+     */
+    public boolean getThumbnailVisible() {
+        // TODO(twellington): The thumbnail and caption should become visible at the same time,
+        //                    possibly by using an observer that is notified when the caption
+        //                    snapshot is captured.
+        //                    Once the thumbnail has been captured, an animation for both
+        //                    the thumbnail and caption should be started.
+        return mThumbnailVisible;
+    }
+
+
+    /**
+     * Called when the thumbnail has finished being fetched.
+     * @param success Whether fetching the thumbnail was successful.
+     */
+    public void onThumbnailFetched(boolean success) {
+        mThumbnailVisible = success;
+        if (success) requestUpdate();
     }
 
     // ============================================================================================